mirrors/gnss-sdr
1
0
Fork 0
mirror of https://github.com/gnss-sdr/gnss-sdr synced 2025-11-08 03:03:02 +00:00
Code Issues Releases Wiki Activity

optimization in GPS L1 TLM decoder

Browse Source
This commit is contained in:
Javier Arribas
2019-04-16 10:08:22 +02:00
parent f8146e5a3f
commit 5e5c85ef99
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/algorithms/telemetry_decoder/gnuradio_blocks/gps_l1_ca_telemetry_decoder_gs.cc
View File

@@ -351,9 +351,6 @@ void gps_l1_ca_telemetry_decoder_gs::reset()
int gps_l1_ca_telemetry_decoder_gs::general_work(int noutput_items __attribute__((unused)), gr_vector_int &ninput_items __attribute__((unused)), int gps_l1_ca_telemetry_decoder_gs::general_work(int noutput_items __attribute__((unused)), gr_vector_int &ninput_items __attribute__((unused)),
gr_vector_const_void_star &input_items, gr_vector_void_star &output_items) gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
{ {
int32_t corr_value = 0;
int32_t preamble_diff = 0;
auto **out = reinterpret_cast<Gnss_Synchro **>(&output_items[0]); // Get the output buffer pointer auto **out = reinterpret_cast<Gnss_Synchro **>(&output_items[0]); // Get the output buffer pointer
const auto **in = reinterpret_cast<const Gnss_Synchro **>(&input_items[0]); // Get the input buffer pointer const auto **in = reinterpret_cast<const Gnss_Synchro **>(&input_items[0]); // Get the input buffer pointer
@@ -381,6 +378,7 @@ int gps_l1_ca_telemetry_decoder_gs::general_work(int noutput_items __attribute__
case 0: // no preamble information case 0: // no preamble information
{ {
//correlate with preamble //correlate with preamble
int32_t corr_value = 0;
if (d_symbol_history.size() >= GPS_CA_PREAMBLE_LENGTH_SYMBOLS) if (d_symbol_history.size() >= GPS_CA_PREAMBLE_LENGTH_SYMBOLS)
{ {
// ******* preamble correlation ******** // ******* preamble correlation ********
@@ -407,6 +405,8 @@ int gps_l1_ca_telemetry_decoder_gs::general_work(int noutput_items __attribute__
case 1: // possible preamble lock case 1: // possible preamble lock
{ {
//correlate with preamble //correlate with preamble
int32_t corr_value = 0;
int32_t preamble_diff = 0;
if (d_symbol_history.size() >= GPS_CA_PREAMBLE_LENGTH_SYMBOLS) if (d_symbol_history.size() >= GPS_CA_PREAMBLE_LENGTH_SYMBOLS)
{ {
// ******* preamble correlation ******** // ******* preamble correlation ********