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Implementation of a missing output decimation for the Galileo E1

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telemetry
decoder block
This commit is contained in:
Javier 2015-06-22 16:08:28 +02:00
parent a31542cbf6
commit d61b3847e5
3 changed files with 36 additions and 3 deletions
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5
src/algorithms/telemetry_decoder/adapters/galileo_e1b_telemetry_decoder.cc
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@ -76,6 +76,11 @@ GalileoE1BTelemetryDecoder::GalileoE1BTelemetryDecoder(ConfigurationInterface* c
telemetry_decoder_->set_iono_queue(&global_galileo_iono_queue);
telemetry_decoder_->set_almanac_queue(&global_galileo_almanac_queue);
telemetry_decoder_->set_utc_model_queue(&global_galileo_utc_model_queue);
//decimation factor
int decimation_factor = configuration->property(role + ".decimation_factor", 1);
telemetry_decoder_->set_decimation(decimation_factor);
channel_ = 0;
}

24
src/algorithms/telemetry_decoder/gnuradio_blocks/galileo_e1b_telemetry_decoder_cc.cc
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@ -180,6 +180,8 @@ galileo_e1b_telemetry_decoder_cc::galileo_e1b_telemetry_decoder_cc(
d_channel = 0;
Prn_timestamp_at_preamble_ms = 0.0;
flag_TOW_set = false;
d_average_count = 0;
d_decimation_output_factor = 1;
}
@ -495,13 +497,29 @@ int galileo_e1b_telemetry_decoder_cc::general_work (int noutput_items, gr_vector
LOG(WARNING) << "Exception writing observables dump file " << e.what();
}
}
//3. Make the output (copy the object contents to the GNURadio reserved memory)
*out[0] = current_synchro_data;
//todo: implement averaging
d_average_count++;
if (d_average_count == d_decimation_output_factor)
{
d_average_count = 0;
//3. Make the output (copy the object contents to the GNURadio reserved memory)
*out[0] = current_synchro_data;
//std::cout<<"GPS L1 TLM output on CH="<<this->d_channel << " SAMPLE STAMP="<<d_sample_counter/d_decimation_output_factor<<std::endl;
return 1;
}
else
{
return 0;
}
return 1;
}
void galileo_e1b_telemetry_decoder_cc::set_decimation(int decimation)
{
d_decimation_output_factor = decimation;
}
void galileo_e1b_telemetry_decoder_cc::set_satellite(Gnss_Satellite satellite)
{
d_satellite = Gnss_Satellite(satellite.get_system(), satellite.get_PRN());

10
src/algorithms/telemetry_decoder/gnuradio_blocks/galileo_e1b_telemetry_decoder_cc.h
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@ -72,6 +72,12 @@ public:
void set_iono_queue(concurrent_queue<Galileo_Iono> *iono_queue); //!< Set the iono data queue
void set_almanac_queue(concurrent_queue<Galileo_Almanac> *almanac_queue); //!< Set the almanac data queue
void set_utc_model_queue(concurrent_queue<Galileo_Utc_Model> *utc_model_queue); //!< Set the UTC model queue
/*!
* \brief Set decimation factor to average the GPS synchronization estimation output from the tracking module.
*/
void set_decimation(int decimation);
/*!
* \brief This is where all signal processing takes place
*/
@ -132,6 +138,10 @@ private:
Gnss_Satellite d_satellite;
int d_channel;
// output averaging and decimation
int d_average_count;
int d_decimation_output_factor;
double d_preamble_time_seconds;
double d_TOW_at_Preamble;