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New feature: GNSS-SDR now reads the IFEN NSR 2bit sample file format. The GNSS-SDR receiver can now be used with the SX-NSR scientific navigation front-end receiver using its native .stream binary captures.

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More information of this high-end front-end can be found here:  http://www.ifen.com/products/sx-scientific-gnss-solutions/nsr-software-receiver.html


git-svn-id: https://svn.code.sf.net/p/gnss-sdr/code/trunk@421 64b25241-fba3-4117-9849-534c7e92360d
This commit is contained in:
Javier Arribas
2013-10-14 16:51:47 +00:00
parent 025a24bb20
commit ee43872704
13 changed files with 1086 additions and 16 deletions
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392
conf/gnss-sdr_nsr_file.conf Normal file
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@@ -0,0 +1,392 @@
; Sample configuration file for IFEN SX-NSR software receiver front-end
; http://www.ifen.com/products/sx-scientific-gnss-solutions/nsr-software-receiver.html
; This sample configuration is able to process directly .sream binary files
; You can define your own receiver and invoke it by doing
; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf
;
[GNSS-SDR]
;######### GLOBAL OPTIONS ##################
;internal_fs_hz: Internal signal sampling frequency after the signal conditioning stage [Hz].
GNSS-SDR.internal_fs_hz=2560000
;######### CONTROL_THREAD CONFIG ############
ControlThread.wait_for_flowgraph=false
;######### SUPL RRLP GPS assistance configuration #####
GNSS-SDR.SUPL_gps_enabled=false
GNSS-SDR.SUPL_read_gps_assistance_xml=false
GNSS-SDR.SUPL_gps_ephemeris_server=supl.nokia.com
GNSS-SDR.SUPL_gps_ephemeris_port=7275
GNSS-SDR.SUPL_gps_acquisition_server=supl.google.com
GNSS-SDR.SUPL_gps_acquisition_port=7275
GNSS-SDR.SUPL_MCC=244
GNSS-SDR.SUPL_MNS=5
GNSS-SDR.SUPL_LAC=0x59e2
GNSS-SDR.SUPL_CI=0x31b0
;######### SIGNAL_SOURCE CONFIG ############
;#implementation: Use [File_Signal_Source] [Nsr_File_Signal_Source] or [UHD_Signal_Source] or [GN3S_Signal_Source] (experimental)
SignalSource.implementation=Nsr_File_Signal_Source
;#filename: path to file with the captured GNSS signal samples to be processed
SignalSource.filename=/media/DATALOGGER_/signals/ION GNSS 2013/E1L1_FE0_Band0.stream
;#item_type: Type and resolution for each of the signal samples. Use only gr_complex in this version.
SignalSource.item_type=byte
;#sampling_frequency: Original Signal sampling frequency in [Hz]
SignalSource.sampling_frequency=20480000
;#freq: RF front-end center frequency in [Hz]
SignalSource.freq=1575420000
;#subdevice: UHD subdevice specification (for USRP1 use A:0 or B:0)
SignalSource.subdevice=B:0
;#samples: Number of samples to be processed. Notice that 0 indicates the entire file.
SignalSource.samples=0
;#repeat: Repeat the processing file. Disable this option in this version
SignalSource.repeat=false
;#dump: Dump the Signal source data to a file. Disable this option in this version
SignalSource.dump=false
SignalSource.dump_filename=../data/signal_source.dat
;#enable_throttle_control: Enabling this option tells the signal source to keep the delay between samples in post processing.
; it helps to not overload the CPU, but the processing time will be longer.
SignalSource.enable_throttle_control=false
;######### SIGNAL_CONDITIONER CONFIG ############
;## It holds blocks to change data type, filter and resample input data.
;#implementation: Use [Pass_Through] or [Signal_Conditioner]
;#[Pass_Through] disables this block and the [DataTypeAdapter], [InputFilter] and [Resampler] blocks
;#[Signal_Conditioner] enables this block. Then you have to configure [DataTypeAdapter], [InputFilter] and [Resampler] blocks
SignalConditioner.implementation=Signal_Conditioner
;######### DATA_TYPE_ADAPTER CONFIG ############
;## Changes the type of input data.
;#implementation: [Pass_Through] disables this block
DataTypeAdapter.implementation=Pass_Through
DataTypeAdapter.item_type=float
;######### INPUT_FILTER CONFIG ############
;## Filter the input data. Can be combined with frequency translation for IF signals
;#implementation: Use [Pass_Through] or [Fir_Filter] or [Freq_Xlating_Fir_Filter]
;#[Freq_Xlating_Fir_Filter] enables FIR filter and a composite frequency translation
;# that shifts IF down to zero Hz.
InputFilter.implementation=Freq_Xlating_Fir_Filter
;#dump: Dump the filtered data to a file.
InputFilter.dump=false
;#dump_filename: Log path and filename.
InputFilter.dump_filename=../data/input_filter.dat
;#The following options are used in the filter design of Fir_Filter and Freq_Xlating_Fir_Filter implementation.
;#These options are based on parameters of gnuradio's function: gr_remez.
;#These function calculates the optimal (in the Chebyshev/minimax sense) FIR filter inpulse
;#reponse given a set of band edges, the desired reponse on those bands,
;#and the weight given to the error in those bands.
;#input_item_type: Type and resolution for input signal samples. Use only gr_complex in this version.
InputFilter.input_item_type=float
;#outut_item_type: Type and resolution for output filtered signal samples. Use only gr_complex in this version.
InputFilter.output_item_type=gr_complex
;#taps_item_type: Type and resolution for the taps of the filter. Use only float in this version.
InputFilter.taps_item_type=float
;#number_of_taps: Number of taps in the filter. Increasing this parameter increases the processing time
InputFilter.number_of_taps=5
;#number_of _bands: Number of frequency bands in the filter.
InputFilter.number_of_bands=2
;#bands: frequency at the band edges [ b1 e1 b2 e2 b3 e3 ...].
;#Frequency is in the range [0, 1], with 1 being the Nyquist frequency (Fs/2)
;#The number of band_begin and band_end elements must match the number of bands
InputFilter.band1_begin=0.0
InputFilter.band1_end=0.45
InputFilter.band2_begin=0.55
InputFilter.band2_end=1.0
;#ampl: desired amplitude at the band edges [ a(b1) a(e1) a(b2) a(e2) ...].
;#The number of ampl_begin and ampl_end elements must match the number of bands
InputFilter.ampl1_begin=1.0
InputFilter.ampl1_end=1.0
InputFilter.ampl2_begin=0.0
InputFilter.ampl2_end=0.0
;#band_error: weighting applied to each band (usually 1).
;#The number of band_error elements must match the number of bands
InputFilter.band1_error=1.0
InputFilter.band2_error=1.0
;#filter_type: one of "bandpass", "hilbert" or "differentiator"
InputFilter.filter_type=bandpass
;#grid_density: determines how accurately the filter will be constructed.
;The minimum value is 16; higher values are slower to compute the filter.
InputFilter.grid_density=16
;# Original sampling frequency stored in the signal file
InputFilter.sampling_frequency=20480000
;#The following options are used only in Freq_Xlating_Fir_Filter implementation.
;#InputFilter.IF is the intermediate frequency (in Hz) shifted down to zero Hz
InputFilter.IF=5499998.47412109
;# Decimation factor after the frequency tranaslating block
InputFilter.decimation_factor=8
;######### RESAMPLER CONFIG ############
;## Resamples the input data.
;#implementation: Use [Pass_Through] or [Direct_Resampler]
;#[Pass_Through] disables this block
;#[Direct_Resampler] enables a resampler that implements a nearest neigbourhood interpolation
;Resampler.implementation=Direct_Resampler
Resampler.implementation=Pass_Through
;#dump: Dump the resamplered data to a file.
Resampler.dump=false
;#dump_filename: Log path and filename.
Resampler.dump_filename=../data/resampler.dat
;#item_type: Type and resolution for each of the signal samples. Use only gr_complex in this version.
Resampler.item_type=gr_complex
;#sample_freq_in: the sample frequency of the input signal
Resampler.sample_freq_in=8000000
;#sample_freq_out: the desired sample frequency of the output signal
Resampler.sample_freq_out=2048000
;######### CHANNELS GLOBAL CONFIG ############
;#count: Number of available satellite channels.
Channels.count=8
;#in_acquisition: Number of channels simultaneously acquiring
Channels.in_acquisition=1
;#system: GPS, GLONASS, Galileo, SBAS or Compass
;#if the option is disabled by default is assigned GPS
Channel.system=GPS
;#signal:
;# "1C" GPS L1 C/A
;# "1P" GPS L1 P
;# "1W" GPS L1 Z-tracking and similar (AS on)
;# "1Y" GPS L1 Y
;# "1M" GPS L1 M
;# "1N" GPS L1 codeless
;# "2C" GPS L2 C/A
;# "2D" GPS L2 L1(C/A)+(P2-P1) semi-codeless
;# "2S" GPS L2 L2C (M)
;# "2L" GPS L2 L2C (L)
;# "2X" GPS L2 L2C (M+L)
;# "2P" GPS L2 P
;# "2W" GPS L2 Z-tracking and similar (AS on)
;# "2Y" GPS L2 Y
;# "2M" GPS GPS L2 M
;# "2N" GPS L2 codeless
;# "5I" GPS L5 I
;# "5Q" GPS L5 Q
;# "5X" GPS L5 I+Q
;# "1C" GLONASS G1 C/A
;# "1P" GLONASS G1 P
;# "2C" GLONASS G2 C/A (Glonass M)
;# "2P" GLONASS G2 P
;# "1A" GALILEO E1 A (PRS)
;# "1B" GALILEO E1 B (I/NAV OS/CS/SoL)
;# "1C" GALILEO E1 C (no data)
;# "1X" GALILEO E1 B+C
;# "1Z" GALILEO E1 A+B+C
;# "5I" GALILEO E5a I (F/NAV OS)
;# "5Q" GALILEO E5a Q (no data)
;# "5X" GALILEO E5a I+Q
;# "7I" GALILEO E5b I
;# "7Q" GALILEO E5b Q
;# "7X" GALILEO E5b I+Q
;# "8I" GALILEO E5 I
;# "8Q" GALILEO E5 Q
;# "8X" GALILEO E5 I+Q
;# "6A" GALILEO E6 A
;# "6B" GALILEO E6 B
;# "6C" GALILEO E6 C
;# "6X" GALILEO E6 B+C
;# "6Z" GALILEO E6 A+B+C
;# "1C" SBAS L1 C/A
;# "5I" SBAS L5 I
;# "5Q" SBAS L5 Q
;# "5X" SBAS L5 I+Q
;# "2I" COMPASS E2 I
;# "2Q" COMPASS E2 Q
;# "2X" COMPASS E2 IQ
;# "7I" COMPASS E5b I
;# "7Q" COMPASS E5b Q
;# "7X" COMPASS E5b IQ
;# "6I" COMPASS E6 I
;# "6Q" COMPASS E6 Q
;# "6X" COMPASS E6 IQ
;#if the option is disabled by default is assigned "1C" GPS L1 C/A
Channel.signal=1C
;######### SPECIFIC CHANNELS CONFIG ######
;#The following options are specific to each channel and overwrite the generic options
;######### CHANNEL 0 CONFIG ############
Channel0.system=GPS
Channel0.signal=1C
;#satellite: Satellite PRN ID for this channel. Disable this option to random search
Channel0.satellite=11
;######### CHANNEL 1 CONFIG ############
Channel1.system=GPS
Channel1.signal=1C
Channel1.satellite=18
;######### ACQUISITION GLOBAL CONFIG ############
;#dump: Enable or disable the acquisition internal data file logging [true] or [false]
Acquisition.dump=false
;#filename: Log path and filename
Acquisition.dump_filename=./acq_dump.dat
;#item_type: Type and resolution for each of the signal samples. Use only gr_complex in this version.
Acquisition.item_type=gr_complex
;#if: Signal intermediate frequency in [Hz]
Acquisition.if=0
;#sampled_ms: Signal block duration for the acquisition signal detection [ms]
Acquisition.sampled_ms=1
;#implementation: Acquisition algorithm selection for this channel: [GPS_L1_CA_PCPS_Acquisition] or [Galileo_E1_PCPS_Ambiguous_Acquisition]
Acquisition.implementation=GPS_L1_CA_PCPS_Acquisition_Fine_Doppler
;#threshold: Acquisition threshold
Acquisition.threshold=0.010
;#pfa: Acquisition false alarm probability. This option overrides the threshold option. Only use with implementations: [GPS_L1_CA_PCPS_Acquisition] or [Galileo_E1_PCPS_Ambiguous_Acquisition]
;Acquisition.pfa=0.0001
;#doppler_max: Maximum expected Doppler shift [Hz]
Acquisition.doppler_max=10000
Acquisition.doppler_min=-10000
;#doppler_max: Doppler step in the grid search [Hz]
Acquisition.doppler_step=500
;#maximum dwells
Acquisition.max_dwells=15
;######### ACQUISITION CHANNELS CONFIG ######
;#The following options are specific to each channel and overwrite the generic options
;######### ACQUISITION CH 0 CONFIG ############
;Acquisition0.implementation=GPS_L1_CA_PCPS_Acquisition
;Acquisition0.threshold=0.005
;Acquisition0.pfa=0.001
;Acquisition0.doppler_max=10000
;Acquisition0.doppler_step=250
;#repeat_satellite: Use only jointly with the satellite PRN ID option. The default value is false
;Acquisition0.repeat_satellite = false
;######### TRACKING GLOBAL CONFIG ############
;#implementation: Selected tracking algorithm: [GPS_L1_CA_DLL_PLL_Tracking] or [GPS_L1_CA_DLL_FLL_PLL_Tracking] [GPS_L1_CA_DLL_PLL_Optim_Tracking]
Tracking.implementation=GPS_L1_CA_DLL_PLL_Optim_Tracking
;#item_type: Type and resolution for each of the signal samples. Use only [gr_complex] in this version.
Tracking.item_type=gr_complex
;#sampling_frequency: Signal Intermediate Frequency in [Hz]
Tracking.if=0
;#dump: Enable or disable the Tracking internal binary data file logging [true] or [false]
Tracking.dump=false
;#dump_filename: Log path and filename. Notice that the tracking channel will add "x.dat" where x is the channel number.
Tracking.dump_filename=./tracking_ch_
;#pll_bw_hz: PLL loop filter bandwidth [Hz]
Tracking.pll_bw_hz=50.0;
;#dll_bw_hz: DLL loop filter bandwidth [Hz]
Tracking.dll_bw_hz=2.0;
;#fll_bw_hz: FLL loop filter bandwidth [Hz]
Tracking.fll_bw_hz=10.0;
;#order: PLL/DLL loop filter order [2] or [3]
Tracking.order=3;
;#early_late_space_chips: correlator early-late space [chips]. Use [0.5]
Tracking.early_late_space_chips=0.5;
;######### TELEMETRY DECODER CONFIG ############
;#implementation: Use [GPS_L1_CA_Telemetry_Decoder] for GPS L1 C/A.
TelemetryDecoder.implementation=GPS_L1_CA_Telemetry_Decoder
TelemetryDecoder.dump=false
;######### OBSERVABLES CONFIG ############
;#implementation: Use [GPS_L1_CA_Observables] for GPS L1 C/A.
Observables.implementation=GPS_L1_CA_Observables
;#dump: Enable or disable the Observables internal binary data file logging [true] or [false]
Observables.dump=false
;#dump_filename: Log path and filename.
Observables.dump_filename=./observables.dat
;######### PVT CONFIG ############
;#implementation: Position Velocity and Time (PVT) implementation algorithm: Use [GPS_L1_CA_PVT] in this version.
PVT.implementation=GPS_L1_CA_PVT
;#averaging_depth: Number of PVT observations in the moving average algorithm
PVT.averaging_depth=100
;#flag_average: Enables the PVT averaging between output intervals (arithmetic mean) [true] or [false]
PVT.flag_averaging=true
;#output_rate_ms: Period between two PVT outputs. Notice that the minimum period is equal to the tracking integration time (for GPS CA L1 is 1ms) [ms]
PVT.output_rate_ms=100
;#display_rate_ms: Position console print (std::out) interval [ms]. Notice that output_rate_ms<=display_rate_ms.
PVT.display_rate_ms=500
;# RINEX, KML, and NMEA output configuration
;#dump_filename: Log path and filename without extension. Notice that PVT will add ".dat" to the binary dump and ".kml" to GoogleEarth dump.
PVT.dump_filename=./PVT
;#nmea_dump_filename: NMEA log path and filename
PVT.nmea_dump_filename=./gnss_sdr_pvt.nmea;
;#flag_nmea_tty_port: Enable or disable the NMEA log to a serial TTY port (Can be used with real hardware or virtual one)
PVT.flag_nmea_tty_port=false;
;#nmea_dump_devname: serial device descriptor for NMEA logging
PVT.nmea_dump_devname=/dev/pts/4
;#dump: Enable or disable the PVT internal binary data file logging [true] or [false]
PVT.dump=false
;######### OUTPUT_FILTER CONFIG ############
;# Receiver output filter: Leave this block disabled in this version
OutputFilter.implementation=Null_Sink_Output_Filter
OutputFilter.filename=data/gnss-sdr.dat
OutputFilter.item_type=gr_complex

42
src/algorithms/input_filter/adapters/freq_xlating_fir_filter.cc
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@@ -32,7 +32,6 @@
#include "configuration_interface.h"
#include <string>
#include <boost/lexical_cast.hpp>
//#include <gnuradio/io_signature.h>
#include <gnuradio/blocks/file_sink.h>
#include <gnuradio/filter/pm_remez.h>
#include <glog/log_severity.h>
@@ -55,14 +54,24 @@ FreqXlatingFirFilter::FreqXlatingFirFilter(ConfigurationInterface* configuration
if ((taps_item_type_.compare("float") == 0) && (input_item_type_.compare("gr_complex") == 0)
&& (output_item_type_.compare("gr_complex") == 0))
{
item_size = sizeof(gr_complex);
item_size = sizeof(gr_complex); //output
input_size_=sizeof(gr_complex); //input
freq_xlating_fir_filter_ccf_ = gr::filter::freq_xlating_fir_filter_ccf::make(decimation_factor, taps_, intermediate_freq_, sampling_freq_);
DLOG(INFO) << "input_filter(" << freq_xlating_fir_filter_ccf_->unique_id() << ")";
}
else if((taps_item_type_.compare("float") == 0) && (input_item_type_.compare("float") == 0)
&& (output_item_type_.compare("gr_complex") == 0))
{
item_size = sizeof(gr_complex);
input_size_=sizeof(float); //input
freq_xlating_fir_filter_fcf_ = gr::filter::freq_xlating_fir_filter_fcf::make(decimation_factor, taps_, intermediate_freq_, sampling_freq_);
DLOG(INFO) << "input_filter(" << freq_xlating_fir_filter_fcf_->unique_id() << ")";
}
else
{
LOG_AT_LEVEL(ERROR) << taps_item_type_ << " unknown input filter item type";
}
if (dump_)
{
DLOG(INFO) << "Dumping output into file " << dump_filename_;
@@ -82,7 +91,12 @@ void FreqXlatingFirFilter::connect(gr::top_block_sptr top_block)
{
if (dump_)
{
top_block->connect(freq_xlating_fir_filter_ccf_, 0, file_sink_, 0);
if (input_size_==sizeof(float))
{
top_block->connect(freq_xlating_fir_filter_fcf_, 0, file_sink_, 0);
}else{
top_block->connect(freq_xlating_fir_filter_ccf_, 0, file_sink_, 0);
}
}
else
{
@@ -96,7 +110,12 @@ void FreqXlatingFirFilter::disconnect(gr::top_block_sptr top_block)
{
if (dump_)
{
top_block->connect(freq_xlating_fir_filter_ccf_, 0, file_sink_, 0);
if (input_size_==sizeof(float))
{
top_block->disconnect(freq_xlating_fir_filter_fcf_, 0, file_sink_, 0);
}else{
top_block->disconnect(freq_xlating_fir_filter_ccf_, 0, file_sink_, 0);
}
}
}
@@ -104,13 +123,24 @@ void FreqXlatingFirFilter::disconnect(gr::top_block_sptr top_block)
gr::basic_block_sptr FreqXlatingFirFilter::get_left_block()
{
return freq_xlating_fir_filter_ccf_;
if (input_size_==sizeof(float))
{
return freq_xlating_fir_filter_fcf_;
}else{
return freq_xlating_fir_filter_ccf_;
}
}
gr::basic_block_sptr FreqXlatingFirFilter::get_right_block()
{
return freq_xlating_fir_filter_ccf_;
if (input_size_==sizeof(float))
{
return freq_xlating_fir_filter_fcf_;
}else{
return freq_xlating_fir_filter_ccf_;
}
}

3
src/algorithms/input_filter/adapters/freq_xlating_fir_filter.h
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@@ -36,6 +36,7 @@
#include "gnss_synchro.h"
#include "gnss_block_interface.h"
#include <gnuradio/filter/freq_xlating_fir_filter_ccf.h>
#include <gnuradio/filter/freq_xlating_fir_filter_fcf.h>
#include <gnuradio/blocks/file_sink.h>
#include <gnuradio/msg_queue.h>
@@ -82,10 +83,12 @@ public:
private:
gr::filter::freq_xlating_fir_filter_ccf::sptr freq_xlating_fir_filter_ccf_;
gr::filter::freq_xlating_fir_filter_fcf::sptr freq_xlating_fir_filter_fcf_;
ConfigurationInterface* config_;
bool dump_;
std::string dump_filename_;
std::string input_item_type_;
size_t input_size_;
std::string output_item_type_;
std::string taps_item_type_;
std::vector <float> taps_;

2
src/algorithms/signal_source/CMakeLists.txt
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@@ -17,4 +17,4 @@
#
add_subdirectory(adapters)
#add_subdirectory(gnuradio_blocks)
add_subdirectory(gnuradio_blocks)

5
src/algorithms/signal_source/adapters/CMakeLists.txt
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@@ -74,7 +74,7 @@ if(RTLSDR_DRIVER)
set(OPT_DRIVER_INCLUDE_DIRS ${OPT_DRIVER_INCLUDE_DIRS} ${RTL_DRIVER_INCLUDE_DIRS})
endif(RTLSDR_DRIVER)
set(SIGNAL_SOURCE_ADAPTER_SOURCES file_signal_source.cc gen_signal_source.cc uhd_signal_source.cc ${OPT_DRIVER_SOURCES})
set(SIGNAL_SOURCE_ADAPTER_SOURCES file_signal_source.cc gen_signal_source.cc uhd_signal_source.cc nsr_file_signal_source.cc ${OPT_DRIVER_SOURCES})
include_directories(
@@ -83,6 +83,7 @@ include_directories(
${CMAKE_SOURCE_DIR}/src/core/system_parameters
${CMAKE_SOURCE_DIR}/src/core/interfaces
${CMAKE_SOURCE_DIR}/src/algorithms/libs
${CMAKE_SOURCE_DIR}/src/algorithms/signal_source/gnuradio_blocks
${UHD_INCLUDE_DIRS}
${GLOG_INCLUDE_DIRS}
${GFlags_INCLUDE_DIRS}
@@ -90,4 +91,4 @@ include_directories(
)
add_library(signal_source_adapters ${SIGNAL_SOURCE_ADAPTER_SOURCES})
target_link_libraries(signal_source_adapters ${Boost_LIBRARIES} ${GNURADIO_PMT_LIBRARIES} ${GNURADIO_BLOCKS_LIBRARIES} ${UHD_LIBRARIES} ${GNURADIO_UHD_LIBRARIES} ${OPT_LIBRARIES} gnss_sp_libs)
target_link_libraries(signal_source_adapters signal_source_gr_blocks ${Boost_LIBRARIES} ${GNURADIO_PMT_LIBRARIES} ${GNURADIO_BLOCKS_LIBRARIES} ${UHD_LIBRARIES} ${GNURADIO_UHD_LIBRARIES} ${OPT_LIBRARIES} gnss_sp_libs)

8
src/algorithms/signal_source/adapters/file_signal_source.h
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@@ -36,11 +36,8 @@
#define GNSS_SDR_FILE_SIGNAL_SOURCE_H_
#include "gnss_block_interface.h"
//#include <gnuradio/gr_file_source.h>
#include <gnuradio/blocks/file_source.h>
//#include <gnuradio/gr_file_sink.h>
#include <gnuradio/blocks/file_sink.h>
//#include <gnuradio/gr_throttle.h>
#include <gnuradio/blocks/throttle.h>
#include <gnuradio/hier_block2.h>
#include <gnuradio/msg_queue.h>
@@ -101,7 +98,7 @@ public:
}
private:
long samples_;
unsigned long long samples_;
long sampling_frequency_;
std::string filename_;
std::string item_type_;
@@ -111,12 +108,9 @@ private:
std::string role_;
unsigned int in_streams_;
unsigned int out_streams_;
// gr_file_source_sptr file_source_;
gr::blocks::file_source::sptr file_source_;
//gr_block_sptr valve_;
boost::shared_ptr<gr::block> valve_;
gr::blocks::file_sink::sptr sink_;
// gr_block_sptr throttle_;
gr::blocks::throttle::sptr throttle_;
boost::shared_ptr<gr::msg_queue> queue_;
size_t item_size_;

333
src/algorithms/signal_source/adapters/nsr_file_signal_source.cc Normal file
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@@ -0,0 +1,333 @@
/*!
* \file nsr_file_signal_source.cc
* \brief Implementation of a class that reads signals samples from a NSR 2 bits sampler front-end file
* and adapts it to a SignalSourceInterface. More information about the front-end here
* http://www.ifen.com/products/sx-scientific-gnss-solutions/nsr-software-receiver.html
* \author Javier Arribas, 2013 jarribas(at)cttc.es
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2013 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
*
* This file is part of GNSS-SDR.
*
* GNSS-SDR is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* at your option) any later version.
*
* GNSS-SDR is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/
#include "nsr_file_signal_source.h"
#include "gnss_sdr_valve.h"
#include "configuration_interface.h"
#include <string>
#include <iostream>
#include <fstream>
#include <iomanip>
#include <exception>
#include <gflags/gflags.h>
#include <glog/log_severity.h>
#include <glog/logging.h>
using google::LogMessage;
DEFINE_string(nsr_signal_source, "-",
"If defined, path to the file containing the NSR (byte to 2-bit packed) signal samples (overrides the configuration file)");
NsrFileSignalSource::NsrFileSignalSource(ConfigurationInterface* configuration,
std::string role, unsigned int in_streams, unsigned int out_streams,
boost::shared_ptr<gr::msg_queue> queue) :
role_(role), in_streams_(in_streams), out_streams_(out_streams), queue_(queue)
{
std::string default_filename = "../data/my_capture.dat";
std::string default_item_type = "byte";
std::string default_dump_filename = "../data/my_capture_dump.dat";
samples_ = configuration->property(role + ".samples", 0);
sampling_frequency_ = configuration->property(role + ".sampling_frequency", 0);
filename_ = configuration->property(role + ".filename", default_filename);
// override value with commandline flag, if present
if (FLAGS_nsr_signal_source.compare("-") != 0) filename_= FLAGS_nsr_signal_source;
item_type_ = configuration->property(role + ".item_type", default_item_type);
repeat_ = configuration->property(role + ".repeat", false);
dump_ = configuration->property(role + ".dump", false);
dump_filename_ = configuration->property(role + ".dump_filename", default_dump_filename);
enable_throttle_control_ = configuration->property(role + ".enable_throttle_control", false);
if (item_type_.compare("byte") == 0)
{
item_size_ = sizeof(char);
}
else
{
LOG_AT_LEVEL(WARNING) << item_type_
<< " unrecognized item type. Using byte.";
item_size_ = sizeof(char);
}
try
{
file_source_ = gr::blocks::file_source::make(item_size_, filename_.c_str(), repeat_);
unpack_byte_ = make_unpack_byte_2bit_samples();
}
catch (const std::exception &e)
{
std::cerr
<< "The receiver was configured to work with a file signal source "
<< std::endl
<< "but the specified file is unreachable by GNSS-SDR."
<< std::endl
<< "Please modify the configuration at "
<< "conf/gnss-sdr.conf (the default configuration file)"
<< std::endl
<< "and point SignalSource.filename to a valid file,"
<< std::endl
<< "or specify your own receiver and source with the flag"
<< std::endl
<<"gnss-sdr --config_file=my_GNSS_SDR_configuration.conf"
<< std::endl;
LOG_AT_LEVEL(INFO) << "file_signal_source: Unable to open the samples file "
<< filename_.c_str() << ", exiting the program.";
throw(e);
}
DLOG(INFO) << "file_source(" << file_source_->unique_id() << ")";
if (samples_ == 0) // read all file
{
/*!
* BUG workaround: The GNU Radio file source does not stop the receiver after reaching the End of File.
* A possible solution is to compute the file length in samples using file size, excluding the last 100 milliseconds, and enable always the
* valve block
*/
std::ifstream file (filename_.c_str(), std::ios::in | std::ios::binary | std::ios::ate);
std::ifstream::pos_type size;
if (file.is_open())
{
size = file.tellg();
DLOG(INFO) << "Total samples in the file= " << floor((double)size / (double)item_size());
}
else
{
std::cout << "file_signal_source: Unable to open the samples file " << filename_.c_str() << std::endl;
LOG_AT_LEVEL(ERROR) << "file_signal_source: Unable to open the samples file " << filename_.c_str();
}
std::cout << std::setprecision(16);
std::cout << "Processing file " << filename_ << ", which contains " << (double)size << " [bytes]" << std::endl;
if (size > 0)
{
int sample_packet_factor=4; // 1 byte -> 4 samples
samples_ = floor((double)size / (double)item_size())*sample_packet_factor;
samples_=samples_- ceil(0.002 * (double)sampling_frequency_); //process all the samples available in the file excluding the last 2 ms
}
}
CHECK(samples_ > 0) << "File does not contain enough samples to process.";
double signal_duration_s;
signal_duration_s = (double)samples_ * ( 1 /(double)sampling_frequency_);
DLOG(INFO) << "Total number samples to be processed= " << samples_ << " GNSS signal duration= " << signal_duration_s << " [s]";
std::cout << "GNSS signal recorded time to be processed: " << signal_duration_s << " [s]" << std::endl;
valve_ = gnss_sdr_make_valve(sizeof(float), samples_, queue_);
DLOG(INFO) << "valve(" << valve_->unique_id() << ")";
if (dump_)
{
//sink_ = gr_make_file_sink(item_size_, dump_filename_.c_str());
sink_ = gr::blocks::file_sink::make(sizeof(float), dump_filename_.c_str());
DLOG(INFO) << "file_sink(" << sink_->unique_id() << ")";
}
if (enable_throttle_control_)
{
throttle_ = gr::blocks::throttle::make(sizeof(float), sampling_frequency_);
}
DLOG(INFO) << "File source filename " << filename_;
DLOG(INFO) << "Samples " << samples_;
DLOG(INFO) << "Sampling frequency " << sampling_frequency_;
DLOG(INFO) << "Item type " << item_type_;
DLOG(INFO) << "Item size " << item_size_;
DLOG(INFO) << "Repeat " << repeat_;
DLOG(INFO) << "Dump " << dump_;
DLOG(INFO) << "Dump filename " << dump_filename_;
}
NsrFileSignalSource::~NsrFileSignalSource()
{}
void NsrFileSignalSource::connect(gr::top_block_sptr top_block)
{
if (samples_ > 0)
{
if (enable_throttle_control_ == true)
{
top_block->connect(file_source_, 0, unpack_byte_, 0);
top_block->connect(unpack_byte_, 0,throttle_,0);
DLOG(INFO) << "connected file source to throttle";
top_block->connect(throttle_, 0, valve_, 0);
DLOG(INFO) << "connected throttle to valve";
if (dump_)
{
top_block->connect(valve_, 0, sink_, 0);
DLOG(INFO) << "connected valve to file sink";
}
}
else
{
top_block->connect(file_source_, 0, unpack_byte_, 0);
top_block->connect(unpack_byte_, 0,valve_,0);
DLOG(INFO) << "connected file source to valve";
if (dump_)
{
top_block->connect(valve_, 0, sink_, 0);
DLOG(INFO) << "connected valve to file sink";
}
}
}
else
{
if (enable_throttle_control_ == true)
{
top_block->connect(file_source_, 0, unpack_byte_, 0);
top_block->connect(unpack_byte_, 0,throttle_,0);
DLOG(INFO) << "connected file source to throttle";
if (dump_)
{
top_block->connect(throttle_, 0, sink_, 0);
DLOG(INFO) << "connected file source to sink";
}
}
else
{
if (dump_)
{
top_block->connect(file_source_, 0, unpack_byte_, 0);
top_block->connect(unpack_byte_, 0, sink_, 0);
DLOG(INFO) << "connected file source to sink";
}
}
}
}
void NsrFileSignalSource::disconnect(gr::top_block_sptr top_block)
{
if (samples_ > 0)
{
if (enable_throttle_control_ == true)
{
top_block->disconnect(file_source_, 0, unpack_byte_, 0);
DLOG(INFO) << "disconnected file source to unpack_byte_";
top_block->connect(unpack_byte_, 0,throttle_,0);
DLOG(INFO) << "disconnected unpack_byte_ to throttle_";
top_block->disconnect(throttle_, 0, valve_, 0);
DLOG(INFO) << "disconnected throttle to valve";
if (dump_)
{
top_block->disconnect(valve_, 0, sink_, 0);
DLOG(INFO) << "disconnected valve to file sink";
}
}
else
{
top_block->disconnect(file_source_, 0, unpack_byte_, 0);
DLOG(INFO) << "disconnected file source to unpack_byte_";
top_block->disconnect(unpack_byte_, 0, valve_, 0);
DLOG(INFO) << "disconnected unpack_byte_ to valve";
if (dump_)
{
top_block->disconnect(valve_, 0, sink_, 0);
DLOG(INFO) << "disconnected valve to file sink";
}
}
}
else
{
if (enable_throttle_control_ == true)
{
top_block->disconnect(file_source_, 0, unpack_byte_, 0);
DLOG(INFO) << "disconnected file source to unpack_byte_";
top_block->disconnect(unpack_byte_, 0, throttle_, 0);
DLOG(INFO) << "disconnected unpack_byte_ to throttle";
if (dump_)
{
top_block->disconnect(unpack_byte_, 0, sink_, 0);
DLOG(INFO) << "disconnected funpack_byte_ to sink";
}
}
else
{
if (dump_)
{
top_block->disconnect(file_source_, 0, unpack_byte_, 0);
DLOG(INFO) << "disconnected file source to unpack_byte_";
top_block->disconnect(unpack_byte_, 0, sink_, 0);
DLOG(INFO) << "disconnected unpack_byte_ to sink";
}
}
}
}
gr::basic_block_sptr NsrFileSignalSource::get_left_block()
{
LOG_AT_LEVEL(WARNING) << "Left block of a signal source should not be retrieved";
//return gr_block_sptr();
return gr::blocks::file_source::sptr();
}
gr::basic_block_sptr NsrFileSignalSource::get_right_block()
{
if (samples_ > 0)
{
return valve_;
}
else
{
if (enable_throttle_control_ == true)
{
return throttle_;
}
else
{
return unpack_byte_;
}
}
}

123
src/algorithms/signal_source/adapters/nsr_file_signal_source.h Normal file
View File

@@ -0,0 +1,123 @@
/*!
* \file nsr_file_signal_source.h
* \brief Implementation of a class that reads signals samples from a NSR 2 bits sampler front-end file
* and adapts it to a SignalSourceInterface. More information about the front-end here
* http://www.ifen.com/products/sx-scientific-gnss-solutions/nsr-software-receiver.html
* \author Javier Arribas, 2013 jarribas(at)cttc.es
*
* This class represents a file signal source.
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2012 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
*
* This file is part of GNSS-SDR.
*
* GNSS-SDR is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* at your option) any later version.
*
* GNSS-SDR is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/
#ifndef GNSS_SDR_NSR_FILE_SIGNAL_SOURCE_H_
#define GNSS_SDR_NSR_FILE_SIGNAL_SOURCE_H_
#include "gnss_block_interface.h"
#include <gnuradio/blocks/file_source.h>
#include "unpack_byte_2bit_samples.h"
#include <gnuradio/blocks/file_sink.h>
#include <gnuradio/blocks/throttle.h>
#include <gnuradio/hier_block2.h>
#include <gnuradio/msg_queue.h>
class ConfigurationInterface;
/*!
* \brief Class that reads signals samples from a file
* and adapts it to a SignalSourceInterface
*/
class NsrFileSignalSource: public GNSSBlockInterface
{
public:
NsrFileSignalSource(ConfigurationInterface* configuration, std::string role,
unsigned int in_streams, unsigned int out_streams,
boost::shared_ptr<gr::msg_queue> queue);
virtual ~NsrFileSignalSource();
std::string role()
{
return role_;
}
/*!
* \brief Returns "Nsr_File_Signal_Source".
*/
std::string implementation()
{
return "Nsr_File_Signal_Source";
}
size_t item_size()
{
return item_size_;
}
void connect(gr::top_block_sptr top_block);
void disconnect(gr::top_block_sptr top_block);
gr::basic_block_sptr get_left_block();
gr::basic_block_sptr get_right_block();
std::string filename()
{
return filename_;
}
std::string item_type()
{
return item_type_;
}
bool repeat()
{
return repeat_;
}
long sampling_frequency()
{
return sampling_frequency_;
}
long samples()
{
return samples_;
}
private:
unsigned long long samples_;
long sampling_frequency_;
std::string filename_;
std::string item_type_;
bool repeat_;
bool dump_;
std::string dump_filename_;
std::string role_;
unsigned int in_streams_;
unsigned int out_streams_;
gr::blocks::file_source::sptr file_source_;
unpack_byte_2bit_samples_sptr unpack_byte_;
boost::shared_ptr<gr::block> valve_;
gr::blocks::file_sink::sptr sink_;
gr::blocks::throttle::sptr throttle_;
boost::shared_ptr<gr::msg_queue> queue_;
size_t item_size_;
// Throttle control
bool enable_throttle_control_;
};
#endif /*GNSS_SDR_NSR_FILE_SIGNAL_SOURCE_H_*/

32
src/algorithms/signal_source/gnuradio_blocks/CMakeLists.txt Normal file
View File

@@ -0,0 +1,32 @@
# Copyright (C) 2012-2013 (see AUTHORS file for a list of contributors)
#
# This file is part of GNSS-SDR.
#
# GNSS-SDR is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# at your option) any later version.
#
# GNSS-SDR is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
#
set(SIGNAL_SOURCE_GR_BLOCKS_SOURCES
unpack_byte_2bit_samples.cc
)
include_directories(
$(CMAKE_CURRENT_SOURCE_DIR)
${GLOG_INCLUDE_DIRS}
${GFlags_INCLUDE_DIRS}
${GNURADIO_RUNTIME_INCLUDE_DIRS}
)
add_library(signal_source_gr_blocks ${SIGNAL_SOURCE_GR_BLOCKS_SOURCES})
target_link_libraries(signal_source_gr_blocks ${GNURADIO_RUNTIME_LIBRARIES})

87
src/algorithms/signal_source/gnuradio_blocks/unpack_byte_2bit_samples.cc Normal file
View File

@@ -0,0 +1,87 @@
/*!
* \file unpack_byte_2bit_samples.cc
*
* \brief Unpacks byte samples to NSR 2 bits samples
* \author Javier Arribas jarribas (at) cttc.es
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2012 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
*
* This file is part of GNSS-SDR.
*
* GNSS-SDR is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* at your option) any later version.
*
* GNSS-SDR is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/
#include "unpack_byte_2bit_samples.h"
#include <iostream>
#include <gnuradio/io_signature.h>
struct byte_2bit_struct
{
signed two_bit_sample:2; // <- 2 bits wide only
};
unpack_byte_2bit_samples_sptr make_unpack_byte_2bit_samples()
{
return unpack_byte_2bit_samples_sptr(new unpack_byte_2bit_samples());
}
unpack_byte_2bit_samples::unpack_byte_2bit_samples()
: sync_interpolator("unpack_byte_2bit_samples",
gr::io_signature::make(1, 1,sizeof(signed char)),
gr::io_signature::make(1, 1,sizeof(float)),
4)
{
}
unpack_byte_2bit_samples::~unpack_byte_2bit_samples()
{
}
int unpack_byte_2bit_samples::work(int noutput_items,gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
const signed char *in = (const signed char *)input_items[0];
float *out = (float*)output_items[0];
byte_2bit_struct sample;
int n=0;
for(int i = 0; i < noutput_items/4; i++) {
// Read packed input sample (1 byte = 4 samples)
signed char c = in[i];
sample.two_bit_sample=c & 3;
out[n++]=(float)sample.two_bit_sample;
sample.two_bit_sample=(c>>2) & 3;
out[n++]=(float)sample.two_bit_sample;
sample.two_bit_sample=(c>>4) & 3;
out[n++]=(float)sample.two_bit_sample;
sample.two_bit_sample=(c>>6) & 3;
out[n++]=(float)sample.two_bit_sample;
}
return noutput_items;
}

58
src/algorithms/signal_source/gnuradio_blocks/unpack_byte_2bit_samples.h Normal file
View File

@@ -0,0 +1,58 @@
/*!
* \file unpack_byte_2bit_samples.h
*
* \brief Unpacks byte samples to NSR 2 bits samples
* \author Javier Arribas jarribas (at) cttc.es
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2012 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
*
* This file is part of GNSS-SDR.
*
* GNSS-SDR is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* at your option) any later version.
*
* GNSS-SDR is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/
#ifndef GNSS_SDR_unpack_byte_2bit_samples_H
#define GNSS_SDR_unpack_byte_2bit_samples_H
#include <gnuradio/sync_interpolator.h>
class unpack_byte_2bit_samples;
typedef boost::shared_ptr<unpack_byte_2bit_samples> unpack_byte_2bit_samples_sptr;
unpack_byte_2bit_samples_sptr make_unpack_byte_2bit_samples();
/*!
* \brief This class implements conversion between byte packet samples to 2bit samples
* 1 byte = 4 2bit samples
*/
class unpack_byte_2bit_samples: public gr::sync_interpolator
{
private:
friend unpack_byte_2bit_samples_sptr
make_unpack_byte_2bit_samples_sptr();
public:
unpack_byte_2bit_samples();
~unpack_byte_2bit_samples();
int work (int noutput_items,gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
};
#endif

1
src/core/receiver/CMakeLists.txt
View File

@@ -34,6 +34,7 @@ include_directories(
${CMAKE_SOURCE_DIR}/src/core/libs/supl/asn-supl
${CMAKE_SOURCE_DIR}/src/algorithms/libs
${CMAKE_SOURCE_DIR}/src/algorithms/signal_source/adapters
${CMAKE_SOURCE_DIR}/src/algorithms/signal_source/gnuradio_blocks
${CMAKE_SOURCE_DIR}/src/algorithms/output_filter/adapters
${CMAKE_SOURCE_DIR}/src/algorithms/channel/adapters
${CMAKE_SOURCE_DIR}/src/algorithms/channel/libs

16
src/core/receiver/gnss_block_factory.cc
View File

@@ -44,6 +44,7 @@
#include "gnss_block_interface.h"
#include "pass_through.h"
#include "file_signal_source.h"
#include "nsr_file_signal_source.h"
#include "null_sink_output_filter.h"
#include "file_output_filter.h"
#include "channel.h"
@@ -286,6 +287,21 @@ GNSSBlockInterface* GNSSBlockFactory::GetBlock(
exit(1);
}
}
else if (implementation.compare("Nsr_File_Signal_Source") == 0)
{
try
{
block = new NsrFileSignalSource(configuration, role, in_streams,
out_streams, queue);
}
catch (const std::exception &e)
{
std::cout << "GNSS-SDR program ended." << std::endl;
LOG_AT_LEVEL(INFO) << implementation
<< ": Source file not found";
exit(1);
}
}
else if (implementation.compare("UHD_Signal_Source") == 0)
{
block = new UhdSignalSource(configuration, role, in_streams,