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https://github.com/gnss-sdr/gnss-sdr
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Add adapter for Glonass L1 C/A tracking
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@ -33,6 +33,7 @@ set(TRACKING_ADAPTER_SOURCES
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gps_l1_ca_tcp_connector_tracking.cc
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galileo_e5a_dll_pll_tracking.cc
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gps_l2_m_dll_pll_tracking.cc
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glonass_l1_ca_dll_pll_tracking.cc
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${OPT_TRACKING_ADAPTERS}
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)
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@ -0,0 +1,111 @@
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#include "glonass_l1_ca_dll_pll_tracking.h"
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#include <glog/logging.h>
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#include "Glonass_L1_CA.h"
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#include "configuration_interface.h"
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using google::LogMessage;
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GlonassL1CaDllPllTracking::GlonassL1CaDllPllTracking(
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ConfigurationInterface* configuration, std::string role,
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unsigned int in_streams, unsigned int out_streams) :
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role_(role), in_streams_(in_streams), out_streams_(out_streams)
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{
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DLOG(INFO) << "role " << role;
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//################# CONFIGURATION PARAMETERS ########################
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int fs_in;
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int vector_length;
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int f_if;
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bool dump;
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std::string dump_filename;
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std::string item_type;
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std::string default_item_type = "gr_complex";
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float pll_bw_hz;
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float dll_bw_hz;
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float early_late_space_chips;
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item_type = configuration->property(role + ".item_type", default_item_type);
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fs_in = configuration->property("GNSS-SDR.internal_fs_hz", 2048000);
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f_if = configuration->property(role + ".if", 0);
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dump = configuration->property(role + ".dump", false);
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pll_bw_hz = configuration->property(role + ".pll_bw_hz", 50.0);
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dll_bw_hz = configuration->property(role + ".dll_bw_hz", 2.0);
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early_late_space_chips = configuration->property(role + ".early_late_space_chips", 0.5);
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std::string default_dump_filename = "./track_ch";
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dump_filename = configuration->property(role + ".dump_filename", default_dump_filename); //unused!
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vector_length = std::round(fs_in / (GLONASS_L1_CA_CODE_RATE_HZ / GLONASS_L1_CA_CODE_LENGTH_CHIPS));
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//################# MAKE TRACKING GNURadio object ###################
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if (item_type.compare("gr_complex") == 0)
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{
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item_size_ = sizeof(gr_complex);
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tracking_ = glonass_l1_ca_dll_pll_make_tracking_cc(
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f_if,
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fs_in,
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vector_length,
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dump,
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dump_filename,
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pll_bw_hz,
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dll_bw_hz,
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early_late_space_chips);
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}
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else
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{
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item_size_ = sizeof(gr_complex);
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LOG(WARNING) << item_type << " unknown tracking item type.";
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}
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channel_ = 0;
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DLOG(INFO) << "tracking(" << tracking_->unique_id() << ")";
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}
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GlonassL1CaDllPllTracking::~GlonassL1CaDllPllTracking()
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{}
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void GlonassL1CaDllPllTracking::start_tracking()
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{
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tracking_->start_tracking();
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}
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/*
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* Set tracking channel unique ID
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*/
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void GlonassL1CaDllPllTracking::set_channel(unsigned int channel)
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{
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channel_ = channel;
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tracking_->set_channel(channel);
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}
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void GlonassL1CaDllPllTracking::set_gnss_synchro(Gnss_Synchro* p_gnss_synchro)
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{
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tracking_->set_gnss_synchro(p_gnss_synchro);
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}
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void GlonassL1CaDllPllTracking::connect(gr::top_block_sptr top_block)
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{
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if(top_block) { /* top_block is not null */};
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//nothing to connect, now the tracking uses gr_sync_decimator
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}
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void GlonassL1CaDllPllTracking::disconnect(gr::top_block_sptr top_block)
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{
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if(top_block) { /* top_block is not null */};
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//nothing to disconnect, now the tracking uses gr_sync_decimator
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}
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gr::basic_block_sptr GlonassL1CaDllPllTracking::get_left_block()
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{
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return tracking_;
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}
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gr::basic_block_sptr GlonassL1CaDllPllTracking::get_right_block()
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{
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return tracking_;
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}
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@ -0,0 +1,67 @@
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#ifndef GNSS_SDR_GLONASS_L1_CA_DLL_PLL_TRACKING_H_
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#define GNSS_SDR_GLONASS_L1_CA_DLL_PLL_TRACKING_H_
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#include <string>
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#include "tracking_interface.h"
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#include "glonass_l1_ca_dll_pll_tracking_cc.h"
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class ConfigurationInterface;
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/*!
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* \brief This class implements a code DLL + carrier PLL tracking loop
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*/
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class GlonassL1CaDllPllTracking : public TrackingInterface
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{
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public:
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GlonassL1CaDllPllTracking(ConfigurationInterface* configuration,
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std::string role,
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unsigned int in_streams,
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unsigned int out_streams);
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virtual ~GlonassL1CaDllPllTracking();
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std::string role()
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{
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return role_;
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}
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//! Returns "GLONASS_L1_CA_DLL_PLL_Tracking"
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std::string implementation()
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{
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return "GLONASS_L1_CA_DLL_PLL_Tracking";
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}
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size_t item_size()
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{
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return item_size_;
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}
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void connect(gr::top_block_sptr top_block);
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void disconnect(gr::top_block_sptr top_block);
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gr::basic_block_sptr get_left_block();
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gr::basic_block_sptr get_right_block();
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/*!
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* \brief Set tracking channel unique ID
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*/
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void set_channel(unsigned int channel);
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/*!
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* \brief Set acquisition/tracking common Gnss_Synchro object pointer
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* to efficiently exchange synchronization data between acquisition and tracking blocks
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*/
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void set_gnss_synchro(Gnss_Synchro* p_gnss_synchro);
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void start_tracking();
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private:
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glonass_l1_ca_dll_pll_tracking_cc_sptr tracking_;
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size_t item_size_;
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unsigned int channel_;
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std::string role_;
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unsigned int in_streams_;
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unsigned int out_streams_;
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};
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#endif // GNSS_SDR_GLONASS_L1_CA_DLL_PLL_TRACKING_H_
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