kopia lustrzana https://github.com/Guenael/rtlsdr-wsprd
memory leak fix & float approx fix
rodzic
6b42675dd5
commit
81edbc091c
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@ -8,7 +8,7 @@
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#pragma GCC diagnostic ignored "-Wmissing-braces"
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//float symbol_scale[4]={42.6, 53.3, 72.7, 100.2};
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float metric_tables[4][256]= {
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static const float metric_tables[4][256]= {
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0.9782, 0.9695, 0.9689, 0.9669, 0.9666, 0.9653, 0.9638, 0.9618, 0.9599, 0.9601,
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0.9592, 0.9570, 0.9556, 0.9540, 0.9525, 0.9527, 0.9486, 0.9477, 0.9450, 0.9436,
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0.9424, 0.9400, 0.9381, 0.9360, 0.9340, 0.9316, 0.9301, 0.9272, 0.9254, 0.9224,
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@ -40,7 +40,7 @@
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#include <sys/time.h>
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#include <pthread.h>
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#include <curl/curl.h>
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#include <pthread.h>
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#include <rtl-sdr.h>
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#include "rtlsdr_wsprd.h"
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@ -49,7 +49,6 @@
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/* TODO
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- multi device selection option
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- multispot report in one post
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- type fix (uint32_t etc..)
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- verbose option
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*/
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@ -73,6 +72,7 @@ static rtlsdr_dev_t *rtl_device = NULL;
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/* Thread stuff for separate decoding */
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struct decoder_state {
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pthread_t thread;
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pthread_attr_t tattr;
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pthread_rwlock_t rw;
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pthread_cond_t ready_cond;
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@ -141,7 +141,7 @@ static void rtlsdr_callback(unsigned char *samples, uint32_t samples_count, void
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out_Q = in_Q * cos(x) + in_I * sin(x)
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(Weaver technique, keep the upper band, IQ inverted on RTL devices)
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*/
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int16_t tmp;
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int8_t tmp;
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for (uint32_t i=0; i<sigLenght; i+=8) {
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tmp = -sigIn[i+3];
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sigIn[i+3] = sigIn[i+2];
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@ -425,7 +425,7 @@ void usage(void) {
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"\t-Q quick mode, doesn't dig deep for weak signals\n"
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"\t-S single pass mode, no subtraction (same as original wsprd)\n"
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"Example:\n"
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"\trtlsdr_wsprd -f 144.489M -c A1XYZ -l AB12cd -g 29 -o -4080\n");
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"\trtlsdr_wsprd -f 144.489M -c A1XYZ -l AB12cd -g 29 -o -4200\n");
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exit(1);
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}
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@ -480,7 +480,7 @@ int main(int argc, char** argv) {
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case 'p':
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rx_options.ppm = atoi(optarg);
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break;
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case 'u': // Frequency
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case 'u': // Upconverter frequency
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rx_options.upconverter = (uint32_t)atofs(optarg);
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break;
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case 'H': // Decoder option, use a hastable
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@ -616,7 +616,7 @@ int main(int argc, char** argv) {
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time_t rawtime;
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time ( &rawtime );
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struct tm *gtm = gmtime(&rawtime);
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printf("\nStarting rtlsdr-wsprd (%04d-%02d-%02d, %02d:%02dz) -- Version 0.1\n",
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printf("\nStarting rtlsdr-wsprd (%04d-%02d-%02d, %02d:%02dz) -- Version 0.2\n",
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gtm->tm_year + 1900, gtm->tm_mon + 1, gtm->tm_mday, gtm->tm_hour, gtm->tm_min);
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printf(" Callsign : %s\n", dec_options.rcall);
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printf(" Locator : %s\n", dec_options.rloc);
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@ -637,6 +637,13 @@ int main(int argc, char** argv) {
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uint32_t uwait = 120000000 - usec;
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printf("Wait for time sync (start in %d sec)\n\n", uwait/1000000);
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/* Prepare a low priority param for the decoder thread */
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struct sched_param p;
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pthread_attr_init(&dec.tattr);
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pthread_attr_setschedpolicy(&dec.tattr, SCHED_RR);
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pthread_attr_getschedparam(&dec.tattr, &p);
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p.sched_priority = 40;
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pthread_attr_setschedparam(&dec.tattr, &p);
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/* Create a thread and stuff for separate decoding
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Info : https://computing.llnl.gov/tutorials/pthreads/
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@ -644,9 +651,8 @@ int main(int argc, char** argv) {
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pthread_rwlock_init(&dec.rw, NULL);
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pthread_cond_init(&dec.ready_cond, NULL);
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pthread_mutex_init(&dec.ready_mutex, NULL);
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pthread_create(&dec.thread, NULL, wsprDecoder, NULL);
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pthread_create(&dongle.thread, NULL, rtlsdr_rx, NULL);
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pthread_create(&dec.thread, &dec.tattr, wsprDecoder, NULL);
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/* Main loop : Wait, read, decode */
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while (!rx_state.exit_flag) {
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@ -669,7 +675,6 @@ int main(int argc, char** argv) {
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while( (rx_state.exit_flag == false) &&
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(rx_state.iqIndex < (SIGNAL_LENGHT * SIGNAL_SAMPLE_RATE) ) ) {
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//sleep(1);
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usleep(250000);
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}
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}
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329
wsprd.c
329
wsprd.c
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@ -11,6 +11,10 @@
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Copyright 2014-2015, Steven Franke, K9AN
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Minor modifications
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Copyright 2016, Guenael Jouchet, VA2GKA
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License: GNU GPL v3
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This program is free software: you can redistribute it and/or modify
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@ -41,19 +45,24 @@
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#include "nhash.h"
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#include "wsprd_utils.h"
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#include "wsprsim_utils.h"
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#include "metric_tables.h"
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#define DT 1.0/375.0
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#define DF 375.0/256.0
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#define TWOPIDT 2*M_PI*DT
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#define DT 1.0/375.0
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#define TWOPIDT 2 * M_PI * DT
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#define NIQ 45000
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#define NBITS 81
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#define NSYM 162
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#define NSPERSYM 256
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#define NFILT 256
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#define NSIG NSYM * NSPERSYM
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#define max(x,y) ((x) > (y) ? (x) : (y))
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// Possible PATIENCE options: FFTW_ESTIMATE, FFTW_ESTIMATE_PATIENT,
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// FFTW_MEASURE, FFTW_PATIENT, FFTW_EXHAUSTIVE
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/* Possible PATIENCE options: FFTW_ESTIMATE, FFTW_ESTIMATE_PATIENT, FFTW_MEASURE, FFTW_PATIENT, FFTW_EXHAUSTIVE */
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#define PATIENCE FFTW_ESTIMATE
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fftwf_plan PLAN1,PLAN2,PLAN3;
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unsigned char pr3[162]= {
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uint8_t pr3[NSYM]= {
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1,1,0,0,0,0,0,0,1,0,0,0,1,1,1,0,0,0,1,0,
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0,1,0,1,1,1,1,0,0,0,0,0,0,0,1,0,0,1,0,1,
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0,0,0,0,0,0,1,0,1,1,0,0,1,1,0,1,0,0,0,1,
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@ -65,16 +74,17 @@ unsigned char pr3[162]= {
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0,0
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};
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unsigned long nr;
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int printdata=0;
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fftwf_plan PLAN1,
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PLAN2,
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PLAN3;
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int32_t printdata=0;
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//***************************************************************************
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void sync_and_demodulate(float *id, float *qd, long np,
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unsigned char *symbols, float *f1, float fstep,
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int *shift1, int lagmin, int lagmax, int lagstep,
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float *drift1, int symfac, float *sync, int mode) {
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uint8_t *symbols, float *f1, float fstep,
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int32_t *shift1, int32_t lagmin, int32_t lagmax, int32_t lagstep,
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float *drift1, int32_t symfac, float *sync, int32_t mode) {
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/***********************************************************************
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* mode = 0: no frequency or drift search. find best time lag. *
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* 1: no time lag or drift search. find best frequency. *
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@ -84,18 +94,24 @@ void sync_and_demodulate(float *id, float *qd, long np,
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float fbest=0.0;
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float f0=0.0,fp,ss;
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int lag;
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int32_t lag;
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static float fplast=-10000.0;
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float i0[162],q0[162],i1[162],q1[162],i2[162],q2[162],i3[162],q3[162];
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float i0[NSYM],q0[NSYM],
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i1[NSYM],q1[NSYM],
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i2[NSYM],q2[NSYM],
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i3[NSYM],q3[NSYM];
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float p0,p1,p2,p3,cmet,totp,syncmax,fac;
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float c0[256],s0[256],c1[256],s1[256],c2[256],s2[256],c3[256],s3[256];
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float c0[NSPERSYM],s0[NSPERSYM],
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c1[NSPERSYM],s1[NSPERSYM],
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c2[NSPERSYM],s2[NSPERSYM],
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c3[NSPERSYM],s3[NSPERSYM];
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float dphi0, cdphi0, sdphi0,
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dphi1, cdphi1, sdphi1,
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dphi2, cdphi2, sdphi2,
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dphi3, cdphi3, sdphi3;
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float fsum=0.0, f2sum=0.0, fsymb[162];
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int best_shift = 0;
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int ifmin=0, ifmax=0;
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float fsum=0.0, f2sum=0.0, fsymb[NSYM];
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int32_t best_shift = 0;
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int32_t ifmin=0, ifmax=0;
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syncmax=-1e30;
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if( mode == 0 ) {
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f0=*f1;
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}
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for(int ifreq=ifmin; ifreq<=ifmax; ifreq++) {
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for(int32_t ifreq=ifmin; ifreq<=ifmax; ifreq++) {
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f0=*f1+ifreq*fstep;
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for(lag=lagmin; lag<=lagmax; lag=lag+lagstep) {
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ss=0.0;
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totp=0.0;
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for (int i=0; i<162; i++) {
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for (int32_t i=0; i<NSYM; i++) {
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fp = f0 + ((float)*drift1/2.0)*((float)i-81.0)/81.0;
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if( i==0 || (fp != fplast) ) { // only calculate sin/cos if necessary
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dphi0=TWOPIDT*(fp-1.5*DF);
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@ -152,7 +168,7 @@ void sync_and_demodulate(float *id, float *qd, long np,
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c3[0]=1;
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s3[0]=0;
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for (int j=1; j<256; j++) {
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for (int32_t j=1; j<NSPERSYM; j++) {
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c0[j]=c0[j-1]*cdphi0 - s0[j-1]*sdphi0;
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s0[j]=c0[j-1]*sdphi0 + s0[j-1]*cdphi0;
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c1[j]=c1[j-1]*cdphi1 - s1[j-1]*sdphi1;
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@ -174,8 +190,8 @@ void sync_and_demodulate(float *id, float *qd, long np,
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i3[i]=0.0;
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q3[i]=0.0;
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for (int j=0; j<256; j++) {
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int k=lag+i*256+j;
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for (int32_t j=0; j<NSPERSYM; j++) {
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int32_t k=lag+i*NSPERSYM+j;
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if( (k>0) & (k<np) ) {
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i0[i]=i0[i] + id[k]*c0[j] + qd[k]*s0[j];
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q0[i]=q0[i] - id[k]*s0[j] + qd[k]*c0[j];
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@ -226,12 +242,12 @@ void sync_and_demodulate(float *id, float *qd, long np,
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if( mode == 2 ) {
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*sync=syncmax;
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for (int i=0; i<162; i++) { //Normalize the soft symbols
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fsum=fsum+fsymb[i]/162.0;
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f2sum=f2sum+fsymb[i]*fsymb[i]/162.0;
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for (int32_t i=0; i<NSYM; i++) { //Normalize the soft symbols
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fsum=fsum+fsymb[i]/NSYM;
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f2sum=f2sum+fsymb[i]*fsymb[i]/NSYM;
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}
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fac=sqrtf(f2sum-fsum*fsum);
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for (int i=0; i<162; i++) {
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for (int32_t i=0; i<NSYM; i++) {
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fsymb[i]=symfac*fsymb[i]/fac;
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if( fsymb[i] > 127) fsymb[i]=127.0;
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if( fsymb[i] < -128 ) fsymb[i]=-128.0;
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@ -247,13 +263,13 @@ void sync_and_demodulate(float *id, float *qd, long np,
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symbol-by-symbol signal subtraction
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****************************************************************************/
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void subtract_signal(float *id, float *qd, long np,
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float f0, int shift0, float drift0, unsigned char* channel_symbols) {
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float f0, int32_t shift0, float drift0, uint8_t* channel_symbols) {
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float i0,q0;
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float c0[256],s0[256];
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float c0[NSPERSYM],s0[NSPERSYM];
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float dphi, cdphi, sdphi;
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for (int i=0; i<162; i++) {
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for (int32_t i=0; i<NSYM; i++) {
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float fp = f0 + ((float)drift0/2.0)*((float)i-81.0)/81.0;
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dphi=TWOPIDT*(fp+((float)channel_symbols[i]-1.5)*DF);
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@ -263,7 +279,7 @@ void subtract_signal(float *id, float *qd, long np,
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c0[0]=1;
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s0[0]=0;
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for (int j=1; j<256; j++) {
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for (int32_t j=1; j<NSPERSYM; j++) {
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c0[j]=c0[j-1]*cdphi - s0[j-1]*sdphi;
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s0[j]=c0[j-1]*sdphi + s0[j-1]*cdphi;
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}
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@ -271,8 +287,8 @@ void subtract_signal(float *id, float *qd, long np,
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i0=0.0;
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q0=0.0;
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for (int j=0; j<256; j++) {
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int k=shift0+i*256+j;
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for (int32_t j=0; j<NSPERSYM; j++) {
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int32_t k=shift0+i*NSPERSYM+j;
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if( (k>0) & (k<np) ) {
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i0=i0 + id[k]*c0[j] + qd[k]*s0[j];
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q0=q0 - id[k]*s0[j] + qd[k]*c0[j];
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@ -282,11 +298,11 @@ void subtract_signal(float *id, float *qd, long np,
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// subtract the signal here.
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i0=i0/256.0; //will be wrong for partial symbols at the edges...
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q0=q0/256.0;
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i0=i0/NSPERSYM; //will be wrong for partial symbols at the edges...
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q0=q0/NSPERSYM;
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for (int j=0; j<256; j++) {
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int k=shift0+i*256+j;
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for (int32_t j=0; j<NSPERSYM; j++) {
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int32_t k=shift0+i*NSPERSYM+j;
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if( (k>0) & (k<np) ) {
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id[k]=id[k]- (i0*c0[j] - q0*s0[j]);
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qd[k]=qd[k]- (q0*c0[j] + i0*s0[j]);
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@ -301,29 +317,12 @@ void subtract_signal(float *id, float *qd, long np,
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Fully coherent signal subtraction
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*******************************************************************************/
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void subtract_signal2(float *id, float *qd, long np,
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float f0, int shift0, float drift0, unsigned char* channel_symbols) {
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float f0, int32_t shift0, float drift0, uint8_t* channel_symbols) {
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float phi=0, dphi, cs;
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int nsym=162, nspersym=256, nfilt=256; //nfilt must be even number.
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int nsig=nsym*nspersym;
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int nc2=45000;
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float *refi, *refq, *ci, *cq, *cfi, *cfq;
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refi=malloc(sizeof(float)*nc2);
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refq=malloc(sizeof(float)*nc2);
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ci=malloc(sizeof(float)*nc2);
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cq=malloc(sizeof(float)*nc2);
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cfi=malloc(sizeof(float)*nc2);
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cfq=malloc(sizeof(float)*nc2);
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memset(refi,0,sizeof(float)*nc2);
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memset(refq,0,sizeof(float)*nc2);
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memset(ci,0,sizeof(float)*nc2);
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memset(cq,0,sizeof(float)*nc2);
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memset(cfi,0,sizeof(float)*nc2);
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memset(cfq,0,sizeof(float)*nc2);
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float refi[NIQ]= {0}, refq[NIQ]= {0},
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ci[NIQ]= {0}, cq[NIQ]= {0},
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cfi[NIQ]= {0}, cfq[NIQ]= {0};
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/******************************************************************************
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Measured signal: s(t)=a(t)*exp( j*theta(t) )
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@ -335,16 +334,16 @@ void subtract_signal2(float *id, float *qd, long np,
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// create reference wspr signal vector, centered on f0.
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//
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for (int i=0; i<nsym; i++) {
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for (int32_t i=0; i<NSYM; i++) {
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cs=(float)channel_symbols[i];
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dphi=TWOPIDT* ( f0 +
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((float)drift0/2.0)*((float)i-(float)nsym/2.0)/((float)nsym/2.0) +
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(cs-1.5)*DF );
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dphi=TWOPIDT * ( f0 +
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((float)drift0/2.0)*((float)i-(float)NSYM/2.0)/((float)NSYM/2.0) +
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(cs-1.5)*DF );
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for (int j=0; j<nspersym; j++ ) {
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int ii=nspersym*i+j;
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for (int32_t j=0; j<NSPERSYM; j++ ) {
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int32_t ii=NSPERSYM*i+j;
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refi[ii]=refi[ii]+cosf(phi); //cannot precompute sin/cos because dphi is changing
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refq[ii]=refq[ii]+sinf(phi);
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phi=phi+dphi;
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||||
|
@ -356,133 +355,111 @@ void subtract_signal2(float *id, float *qd, long np,
|
|||
// beginning of first symbol in received data is at shift0.
|
||||
// filter transient lasts nfilt samples
|
||||
// leave nfilt zeros as a pad at the beginning of the unfiltered reference signal
|
||||
for (int i=0; i<nsym*nspersym; i++) {
|
||||
int k=shift0+i;
|
||||
for (int32_t i=0; i<NSYM*NSPERSYM; i++) {
|
||||
int32_t k=shift0+i;
|
||||
if( (k>0) & (k<np) ) {
|
||||
ci[i+nfilt] = id[k]*refi[i] + qd[k]*refq[i];
|
||||
cq[i+nfilt] = qd[k]*refi[i] - id[k]*refq[i];
|
||||
ci[i+NFILT] = id[k]*refi[i] + qd[k]*refq[i];
|
||||
cq[i+NFILT] = qd[k]*refi[i] - id[k]*refq[i];
|
||||
}
|
||||
}
|
||||
|
||||
//quick and dirty filter - may want to do better
|
||||
float w[nfilt], norm=0, partialsum[nfilt];
|
||||
memset(partialsum,0,sizeof(float)*nfilt);
|
||||
for (int i=0; i<nfilt; i++) {
|
||||
w[i]=sinf(M_PI*(float)i/(float)(nfilt-1));
|
||||
float w[NFILT]= {0}, norm=0, partialsum[NFILT]= {0};
|
||||
for (int32_t i=0; i<NFILT; i++) {
|
||||
w[i]=sinf(M_PI*(float)i/(float)(NFILT-1));
|
||||
norm=norm+w[i];
|
||||
}
|
||||
for (int i=0; i<nfilt; i++) {
|
||||
for (int32_t i=0; i<NFILT; i++) {
|
||||
w[i]=w[i]/norm;
|
||||
}
|
||||
for (int i=1; i<nfilt; i++) {
|
||||
for (int32_t i=1; i<NFILT; i++) {
|
||||
partialsum[i]=partialsum[i-1]+w[i];
|
||||
}
|
||||
|
||||
// LPF
|
||||
for (int i=nfilt/2; i<45000-nfilt/2; i++) {
|
||||
for (int32_t i=NFILT/2; i<NIQ-NFILT/2; i++) {
|
||||
cfi[i]=0.0;
|
||||
cfq[i]=0.0;
|
||||
for (int j=0; j<nfilt; j++) {
|
||||
cfi[i]=cfi[i]+w[j]*ci[i-nfilt/2+j];
|
||||
cfq[i]=cfq[i]+w[j]*cq[i-nfilt/2+j];
|
||||
for (int32_t j=0; j<NFILT; j++) {
|
||||
cfi[i]=cfi[i]+w[j]*ci[i-NFILT/2+j];
|
||||
cfq[i]=cfq[i]+w[j]*cq[i-NFILT/2+j];
|
||||
}
|
||||
}
|
||||
|
||||
// subtract c(t)*r(t) here
|
||||
// (ci+j*cq)(refi+j*refq)=(ci*refi-cq*refq)+j(ci*refq)+cq*refi)
|
||||
// beginning of first symbol in reference signal is at i=nfilt
|
||||
// beginning of first symbol in reference signal is at i=NFILT
|
||||
// beginning of first symbol in received data is at shift0.
|
||||
for (int i=0; i<nsig; i++) {
|
||||
if( i<nfilt/2 ) { // take care of the end effect (LPF step response) here
|
||||
norm=partialsum[nfilt/2+i];
|
||||
} else if( i>(nsig-1-nfilt/2) ) {
|
||||
norm=partialsum[nfilt/2+nsig-1-i];
|
||||
for (int32_t i=0; i<NSIG; i++) {
|
||||
if( i<NFILT/2 ) { // take care of the end effect (LPF step response) here
|
||||
norm=partialsum[NFILT/2+i];
|
||||
} else if( i>(NSIG-1-NFILT/2) ) {
|
||||
norm=partialsum[NFILT/2+NSIG-1-i];
|
||||
} else {
|
||||
norm=1.0;
|
||||
}
|
||||
int k=shift0+i;
|
||||
int j=i+nfilt;
|
||||
int32_t k=shift0+i;
|
||||
int32_t j=i+NFILT;
|
||||
if( (k>0) & (k<np) ) {
|
||||
id[k]=id[k] - (cfi[j]*refi[i]-cfq[j]*refq[i])/norm;
|
||||
qd[k]=qd[k] - (cfi[j]*refq[i]+cfq[j]*refi[i])/norm;
|
||||
}
|
||||
}
|
||||
|
||||
free(refi);
|
||||
free(refq);
|
||||
free(ci);
|
||||
free(cq);
|
||||
free(cfi);
|
||||
free(cfq);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
|
||||
//***************************************************************************
|
||||
int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
||||
struct decoder_options options, struct decoder_results *decodes, int *n_results) {
|
||||
int32_t wspr_decode(float *idat, float *qdat, uint32_t npoints,
|
||||
struct decoder_options options, struct decoder_results *decodes,
|
||||
int32_t *n_results) {
|
||||
|
||||
int i,j,k;
|
||||
unsigned char *symbols, *decdata;
|
||||
signed char message[]= {-9,13,-35,123,57,-39,64,0,0,0,0};
|
||||
char *callsign, *call_loc_pow, *call, *loc, *pwr;
|
||||
char *data_dir=NULL;
|
||||
char wisdom_fname[200],all_fname[200],spots_fname[200];
|
||||
char timer_fname[200],hash_fname[200];
|
||||
int delta,verbose=0;
|
||||
int writenoise=0,wspr_type=2, ipass;
|
||||
int shift1, lagmin, lagmax, lagstep, worth_a_try, not_decoded;
|
||||
unsigned int nbits=81;
|
||||
unsigned int metric, maxcycles, cycles, maxnp;
|
||||
int32_t i,j,k;
|
||||
uint32_t metric, maxcycles, cycles, maxnp;
|
||||
uint8_t symbols[NBITS*2]= {0};
|
||||
uint8_t decdata[(NBITS+7)/8]= {0};
|
||||
int8_t message[]= {-9,13,-35,123,57,-39,64,0,0,0,0};
|
||||
|
||||
char callsign[13]= {0};
|
||||
char call_loc_pow[23]= {0};
|
||||
char call[13]= {0};
|
||||
char loc[7]= {0};
|
||||
char pwr[3]= {0};
|
||||
|
||||
int32_t delta,verbose=0;
|
||||
int32_t writenoise=0,wspr_type=2, ipass;
|
||||
int32_t shift1, lagmin, lagmax, lagstep, worth_a_try, not_decoded;
|
||||
float freq0[200],snr0[200],drift0[200],sync0[200];
|
||||
int shift0[200];
|
||||
int32_t shift0[200];
|
||||
float dt_print;
|
||||
float freq_print;
|
||||
float dialfreq= (float)options.freq / 1e6; // check
|
||||
double freq_print;
|
||||
double dialfreq= (double)options.freq / 1e6; // check
|
||||
float dialfreq_error=0.0;
|
||||
float f1, fstep, sync1=0.0, drift1;
|
||||
int noprint=0;
|
||||
int uniques=0;
|
||||
int32_t noprint=0;
|
||||
int32_t uniques=0;
|
||||
float fmin=-110.0;
|
||||
float fmax=110.0;
|
||||
char hashtab[32768*13]= {0};
|
||||
int32_t nh;
|
||||
|
||||
char *hashtab;
|
||||
hashtab=malloc(sizeof(char)*32768*13);
|
||||
memset(hashtab,0,sizeof(char)*32768*13);
|
||||
|
||||
int nh;
|
||||
symbols=malloc(sizeof(char)*nbits*2);
|
||||
decdata=malloc((nbits+7)/8);
|
||||
callsign=malloc(sizeof(char)*13);
|
||||
call_loc_pow=malloc(sizeof(char)*23);
|
||||
call=malloc(sizeof(char)*13);
|
||||
loc=malloc(sizeof(char)*7);
|
||||
pwr=malloc(sizeof(char)*3);
|
||||
|
||||
|
||||
float allfreqs[100];
|
||||
char allcalls[100][13];
|
||||
memset(allfreqs,0,sizeof(float)*100);
|
||||
memset(allcalls,0,sizeof(char)*100*13);
|
||||
|
||||
float allfreqs[100]= {0};
|
||||
char allcalls[100][13]= {0};
|
||||
|
||||
// Parameters used for performance-tuning:
|
||||
maxcycles=10000; //Fano timeout limit
|
||||
double minsync1=0.10; //First sync limit
|
||||
double minsync2=0.12; //Second sync limit
|
||||
int iifac=3; //Step size in final DT peakup
|
||||
int symfac=50; //Soft-symbol normalizing factor
|
||||
int maxdrift=4; //Maximum (+/-) drift
|
||||
int32_t iifac=3; //Step size in final DT peakup
|
||||
int32_t symfac=50; //Soft-symbol normalizing factor
|
||||
int32_t maxdrift=4; //Maximum (+/-) drift
|
||||
double minrms=52.0 * (symfac/64.0); //Final test for plausible decoding
|
||||
delta=60; //Fano threshold step
|
||||
|
||||
fftwf_complex *fftin, *fftout;
|
||||
|
||||
#include "./metric_tables.c"
|
||||
|
||||
int mettab[2][256];
|
||||
int32_t mettab[2][256];
|
||||
float bias=0.42;
|
||||
|
||||
// setup metric table
|
||||
|
@ -492,30 +469,14 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
}
|
||||
|
||||
FILE *fp_fftw_wisdom_file, *fhash;
|
||||
strcpy(wisdom_fname,".");
|
||||
strcpy(all_fname,".");
|
||||
strcpy(spots_fname,".");
|
||||
strcpy(timer_fname,".");
|
||||
strcpy(hash_fname,".");
|
||||
if(data_dir != NULL) {
|
||||
strcpy(wisdom_fname,data_dir);
|
||||
strcpy(all_fname,data_dir);
|
||||
strcpy(spots_fname,data_dir);
|
||||
strcpy(timer_fname,data_dir);
|
||||
strcpy(hash_fname,data_dir);
|
||||
}
|
||||
strncat(wisdom_fname,"/wspr_wisdom.dat",20);
|
||||
strncat(all_fname,"/ALL_WSPR.TXT",20);
|
||||
strncat(spots_fname,"/wspr_spots.txt",20);
|
||||
strncat(timer_fname,"/wspr_timer.out",20);
|
||||
strncat(hash_fname,"/hashtable.txt",20);
|
||||
if ((fp_fftw_wisdom_file = fopen(wisdom_fname, "r"))) { //Open FFTW wisdom
|
||||
|
||||
if ((fp_fftw_wisdom_file = fopen("wspr_wisdom.dat", "r"))) { //Open FFTW wisdom
|
||||
fftwf_import_wisdom_from_file(fp_fftw_wisdom_file);
|
||||
fclose(fp_fftw_wisdom_file);
|
||||
}
|
||||
|
||||
// Do windowed ffts over 2 symbols, stepped by half symbols
|
||||
int nffts=4*floor(npoints/512)-1;
|
||||
int32_t nffts=4*floor(npoints/512)-1;
|
||||
fftin=(fftwf_complex*) fftwf_malloc(sizeof(fftwf_complex)*512);
|
||||
fftout=(fftwf_complex*) fftwf_malloc(sizeof(fftwf_complex)*512);
|
||||
PLAN3 = fftwf_plan_dft_1d(512, fftin, fftout, FFTW_FORWARD, PATIENCE);
|
||||
|
@ -528,13 +489,13 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
|
||||
if( options.usehashtable ) {
|
||||
char line[80], hcall[12];
|
||||
if( (fhash=fopen(hash_fname,"r+")) ) {
|
||||
if( (fhash=fopen("hashtable.txt","r+")) ) {
|
||||
while (fgets(line, sizeof(line), fhash) != NULL) {
|
||||
sscanf(line,"%d %s",&nh,hcall);
|
||||
strcpy(hashtab+nh*13,hcall);
|
||||
}
|
||||
} else {
|
||||
fhash=fopen(hash_fname,"w+");
|
||||
fhash=fopen("hashtable.txt","w+");
|
||||
}
|
||||
fclose(fhash);
|
||||
}
|
||||
|
@ -565,7 +526,6 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
|
||||
// Compute average spectrum
|
||||
float psavg[512]= {0};
|
||||
//memset(psavg,0.0, sizeof(float)*512);
|
||||
for (i=0; i<nffts; i++) {
|
||||
for (j=0; j<512; j++) {
|
||||
psavg[j]=psavg[j]+ps[j][i];
|
||||
|
@ -573,7 +533,7 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
}
|
||||
|
||||
// Smooth with 7-point window and limit spectrum to +/-150 Hz
|
||||
int window[7]= {1,1,1,1,1,1,1};
|
||||
int32_t window[7]= {1,1,1,1,1,1,1};
|
||||
float smspec[411];
|
||||
for (i=0; i<411; i++) {
|
||||
smspec[i]=0.0;
|
||||
|
@ -620,7 +580,7 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
sync0[i]=0.0;
|
||||
}
|
||||
|
||||
int npk=0;
|
||||
int32_t npk=0;
|
||||
for(j=1; j<410; j++) {
|
||||
if((smspec[j]>smspec[j-1]) && (smspec[j]>smspec[j+1]) && (npk<200)) {
|
||||
freq0[npk]=(j-205)*(DF/2.0);
|
||||
|
@ -645,7 +605,7 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
npk=i;
|
||||
|
||||
// bubble sort on snr, bringing freq along for the ride
|
||||
int pass;
|
||||
int32_t pass;
|
||||
float tmp;
|
||||
for (pass = 1; pass <= npk - 1; pass++) {
|
||||
for (k = 0; k < npk - pass ; k++) {
|
||||
|
@ -674,18 +634,18 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
signal vector.
|
||||
*/
|
||||
|
||||
int idrift,ifr,if0,ifd,k0;
|
||||
int kindex;
|
||||
int32_t idrift,ifr,if0,ifd,k0;
|
||||
int32_t kindex;
|
||||
float smax,ss,pow,p0,p1,p2,p3;
|
||||
for(j=0; j<npk; j++) { //For each candidate...
|
||||
smax=-1e30;
|
||||
if0=freq0[j]/(DF/2.0)+256;
|
||||
if0=freq0[j]/(DF/2.0)+NSPERSYM;
|
||||
for (ifr=if0-1; ifr<=if0+1; ifr++) { //Freq search
|
||||
for( k0=-10; k0<22; k0++) { //Time search
|
||||
for (idrift=-maxdrift; idrift<=maxdrift; idrift++) { //Drift search
|
||||
ss=0.0;
|
||||
pow=0.0;
|
||||
for (k=0; k<162; k++) { //Sum over symbols
|
||||
for (k=0; k<NSYM; k++) { //Sum over symbols
|
||||
ifd=ifr+((float)k-81.0)/81.0*( (float)idrift )/DF;
|
||||
kindex=k0+2*k;
|
||||
if( kindex < nffts ) {
|
||||
|
@ -694,10 +654,10 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
p2=ps[ifd+1][kindex];
|
||||
p3=ps[ifd+3][kindex];
|
||||
|
||||
p0=sqrt(p0);
|
||||
p1=sqrt(p1);
|
||||
p2=sqrt(p2);
|
||||
p3=sqrt(p3);
|
||||
p0=sqrtf(p0);
|
||||
p1=sqrtf(p1);
|
||||
p2=sqrtf(p2);
|
||||
p3=sqrtf(p3);
|
||||
|
||||
ss=ss+(2*pr3[k]-1)*((p1+p3)-(p0+p2));
|
||||
pow=pow+p0+p1+p2+p3;
|
||||
|
@ -708,7 +668,7 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
smax=sync1;
|
||||
shift0[j]=128*(k0+1);
|
||||
drift0[j]=idrift;
|
||||
freq0[j]=(ifr-256)*(DF/2.0);
|
||||
freq0[j]=(ifr-NSPERSYM)*(DF/2.0);
|
||||
sync0[j]=sync1;
|
||||
}
|
||||
}
|
||||
|
@ -734,7 +694,7 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
*/
|
||||
|
||||
for (j=0; j<npk; j++) {
|
||||
memset(symbols,0,sizeof(char)*nbits*2);
|
||||
memset(symbols,0,sizeof(char)*NBITS*2);
|
||||
memset(callsign,0,sizeof(char)*13);
|
||||
memset(call_loc_pow,0,sizeof(char)*23);
|
||||
memset(call,0,sizeof(char)*13);
|
||||
|
@ -751,7 +711,9 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
lagmin=shift1-144;
|
||||
lagmax=shift1+144;
|
||||
lagstep=8;
|
||||
if(options.quickmode) lagstep=16;
|
||||
|
||||
if(options.quickmode)
|
||||
lagstep=16;
|
||||
|
||||
sync_and_demodulate(idat, qdat, npoints, symbols, &f1, fstep, &shift1,
|
||||
lagmin, lagmax, lagstep, &drift1, symfac, &sync1, 0);
|
||||
|
@ -767,7 +729,7 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
worth_a_try = 0;
|
||||
}
|
||||
|
||||
int idt=0, ii=0, jiggered_shift;
|
||||
int32_t idt=0, ii=0, jiggered_shift;
|
||||
double y,sq,rms;
|
||||
not_decoded=1;
|
||||
|
||||
|
@ -783,16 +745,15 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
&sync1, 2);
|
||||
|
||||
sq=0.0;
|
||||
for(i=0; i<162; i++) {
|
||||
for(i=0; i<NSYM; i++) {
|
||||
y=(double)symbols[i] - 128.0;
|
||||
sq += y*y;
|
||||
}
|
||||
rms=sqrt(sq/162.0);
|
||||
rms=sqrt(sq/NSYM);
|
||||
|
||||
if((sync1 > minsync2) && (rms > minrms)) {
|
||||
deinterleave(symbols);
|
||||
|
||||
not_decoded = fano(&metric,&cycles,&maxnp,decdata,symbols,nbits,
|
||||
not_decoded = fano(&metric,&cycles,&maxnp,decdata,symbols,NBITS,
|
||||
mettab,delta,maxcycles);
|
||||
}
|
||||
idt++;
|
||||
|
@ -814,7 +775,7 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
noprint=unpk_(message,hashtab,call_loc_pow,call,loc,pwr,callsign);
|
||||
|
||||
if( options.subtraction && (ipass == 0) && !noprint ) {
|
||||
unsigned char channel_symbols[162];
|
||||
unsigned char channel_symbols[NSYM];
|
||||
|
||||
if( get_wspr_channel_symbols(call_loc_pow, hashtab, channel_symbols) ) {
|
||||
subtract_signal2(idat, qdat, npoints, f1, shift1, drift1, channel_symbols);
|
||||
|
@ -825,7 +786,7 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
}
|
||||
|
||||
// Remove dupes (same callsign and freq within 3 Hz)
|
||||
int dupe=0;
|
||||
int32_t dupe=0;
|
||||
for (i=0; i<uniques; i++) {
|
||||
if(!strcmp(callsign,allcalls[i]) && (fabs(f1-allfreqs[i]) <3.0))
|
||||
dupe=1;
|
||||
|
@ -880,7 +841,7 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
fftwf_free(fftin);
|
||||
fftwf_free(fftout);
|
||||
|
||||
if ((fp_fftw_wisdom_file = fopen(wisdom_fname, "w"))) {
|
||||
if ((fp_fftw_wisdom_file = fopen("wspr_wisdom.dat", "w"))) {
|
||||
fftwf_export_wisdom_to_file(fp_fftw_wisdom_file);
|
||||
fclose(fp_fftw_wisdom_file);
|
||||
}
|
||||
|
@ -890,7 +851,7 @@ int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
|||
fftwf_destroy_plan(PLAN3);
|
||||
|
||||
if( options.usehashtable ) {
|
||||
fhash=fopen(hash_fname,"w");
|
||||
fhash=fopen("hashtable.txt","w");
|
||||
for (i=0; i<32768; i++) {
|
||||
if( strncmp(hashtab+i*13,"\0",1) != 0 ) {
|
||||
fprintf(fhash,"%5d %s\n",i,hashtab+i*13);
|
||||
|
|
17
wsprd.h
17
wsprd.h
|
@ -46,7 +46,7 @@ struct decoder_options {
|
|||
|
||||
|
||||
struct decoder_results {
|
||||
float freq;
|
||||
double freq;
|
||||
float sync;
|
||||
float snr;
|
||||
float dt;
|
||||
|
@ -61,12 +61,13 @@ struct decoder_results {
|
|||
|
||||
|
||||
void sync_and_demodulate(float *id, float *qd, long np,
|
||||
unsigned char *symbols, float *f1, float fstep,
|
||||
int *shift1, int lagmin, int lagmax, int lagstep,
|
||||
float *drift1, int symfac, float *sync, int mode);
|
||||
uint8_t *symbols, float *f1, float fstep,
|
||||
int32_t *shift1, int32_t lagmin, int32_t lagmax, int32_t lagstep,
|
||||
float *drift1, int32_t symfac, float *sync, int32_t mode);
|
||||
void subtract_signal(float *id, float *qd, long np,
|
||||
float f0, int shift0, float drift0, unsigned char* channel_symbols);
|
||||
float f0, int32_t shift0, float drift0, uint8_t* channel_symbols);
|
||||
void subtract_signal2(float *id, float *qd, long np,
|
||||
float f0, int shift0, float drift0, unsigned char* channel_symbols);
|
||||
int wspr_decode(float *idat, float *qdat, unsigned int npoints,
|
||||
struct decoder_options options, struct decoder_results *decodes, int *n_results);
|
||||
float f0, int32_t shift0, float drift0, uint8_t* channel_symbols);
|
||||
int32_t wspr_decode(float *idat, float *qdat, uint32_t npoints,
|
||||
struct decoder_options options, struct decoder_results *decodes,
|
||||
int32_t *n_results);
|
||||
|
|
Ładowanie…
Reference in New Issue