From b7c3221ca54e27302dda9011024eae3aa1333a26 Mon Sep 17 00:00:00 2001 From: Gastd Date: Sun, 23 Jul 2017 22:47:00 -0300 Subject: [PATCH] Add adapter for Glonass L1 C/A tracking --- .../tracking/adapters/CMakeLists.txt | 1 + .../glonass_l1_ca_dll_pll_tracking.cc | 111 ++++++++++++++++++ .../adapters/glonass_l1_ca_dll_pll_tracking.h | 67 +++++++++++ 3 files changed, 179 insertions(+) create mode 100644 src/algorithms/tracking/adapters/glonass_l1_ca_dll_pll_tracking.cc create mode 100644 src/algorithms/tracking/adapters/glonass_l1_ca_dll_pll_tracking.h diff --git a/src/algorithms/tracking/adapters/CMakeLists.txt b/src/algorithms/tracking/adapters/CMakeLists.txt index da2051114..7e1f93924 100644 --- a/src/algorithms/tracking/adapters/CMakeLists.txt +++ b/src/algorithms/tracking/adapters/CMakeLists.txt @@ -33,6 +33,7 @@ set(TRACKING_ADAPTER_SOURCES gps_l1_ca_tcp_connector_tracking.cc galileo_e5a_dll_pll_tracking.cc gps_l2_m_dll_pll_tracking.cc + glonass_l1_ca_dll_pll_tracking.cc ${OPT_TRACKING_ADAPTERS} ) diff --git a/src/algorithms/tracking/adapters/glonass_l1_ca_dll_pll_tracking.cc b/src/algorithms/tracking/adapters/glonass_l1_ca_dll_pll_tracking.cc new file mode 100644 index 000000000..6209f9299 --- /dev/null +++ b/src/algorithms/tracking/adapters/glonass_l1_ca_dll_pll_tracking.cc @@ -0,0 +1,111 @@ +#include "glonass_l1_ca_dll_pll_tracking.h" +#include +#include "Glonass_L1_CA.h" +#include "configuration_interface.h" + + +using google::LogMessage; + +GlonassL1CaDllPllTracking::GlonassL1CaDllPllTracking( + ConfigurationInterface* configuration, std::string role, + unsigned int in_streams, unsigned int out_streams) : + role_(role), in_streams_(in_streams), out_streams_(out_streams) +{ + DLOG(INFO) << "role " << role; + //################# CONFIGURATION PARAMETERS ######################## + int fs_in; + int vector_length; + int f_if; + bool dump; + std::string dump_filename; + std::string item_type; + std::string default_item_type = "gr_complex"; + float pll_bw_hz; + float dll_bw_hz; + float early_late_space_chips; + item_type = configuration->property(role + ".item_type", default_item_type); + fs_in = configuration->property("GNSS-SDR.internal_fs_hz", 2048000); + f_if = configuration->property(role + ".if", 0); + dump = configuration->property(role + ".dump", false); + pll_bw_hz = configuration->property(role + ".pll_bw_hz", 50.0); + dll_bw_hz = configuration->property(role + ".dll_bw_hz", 2.0); + early_late_space_chips = configuration->property(role + ".early_late_space_chips", 0.5); + std::string default_dump_filename = "./track_ch"; + dump_filename = configuration->property(role + ".dump_filename", default_dump_filename); //unused! + vector_length = std::round(fs_in / (GLONASS_L1_CA_CODE_RATE_HZ / GLONASS_L1_CA_CODE_LENGTH_CHIPS)); + + //################# MAKE TRACKING GNURadio object ################### + if (item_type.compare("gr_complex") == 0) + { + item_size_ = sizeof(gr_complex); + tracking_ = glonass_l1_ca_dll_pll_make_tracking_cc( + f_if, + fs_in, + vector_length, + dump, + dump_filename, + pll_bw_hz, + dll_bw_hz, + early_late_space_chips); + } + else + { + item_size_ = sizeof(gr_complex); + LOG(WARNING) << item_type << " unknown tracking item type."; + } + channel_ = 0; + DLOG(INFO) << "tracking(" << tracking_->unique_id() << ")"; +} + + +GlonassL1CaDllPllTracking::~GlonassL1CaDllPllTracking() +{} + + +void GlonassL1CaDllPllTracking::start_tracking() +{ + tracking_->start_tracking(); +} + + +/* + * Set tracking channel unique ID + */ +void GlonassL1CaDllPllTracking::set_channel(unsigned int channel) +{ + channel_ = channel; + tracking_->set_channel(channel); +} + + +void GlonassL1CaDllPllTracking::set_gnss_synchro(Gnss_Synchro* p_gnss_synchro) +{ + tracking_->set_gnss_synchro(p_gnss_synchro); +} + + +void GlonassL1CaDllPllTracking::connect(gr::top_block_sptr top_block) +{ + if(top_block) { /* top_block is not null */}; + //nothing to connect, now the tracking uses gr_sync_decimator +} + + +void GlonassL1CaDllPllTracking::disconnect(gr::top_block_sptr top_block) +{ + if(top_block) { /* top_block is not null */}; + //nothing to disconnect, now the tracking uses gr_sync_decimator +} + + +gr::basic_block_sptr GlonassL1CaDllPllTracking::get_left_block() +{ + return tracking_; +} + + +gr::basic_block_sptr GlonassL1CaDllPllTracking::get_right_block() +{ + return tracking_; +} + diff --git a/src/algorithms/tracking/adapters/glonass_l1_ca_dll_pll_tracking.h b/src/algorithms/tracking/adapters/glonass_l1_ca_dll_pll_tracking.h new file mode 100644 index 000000000..b9d39cbef --- /dev/null +++ b/src/algorithms/tracking/adapters/glonass_l1_ca_dll_pll_tracking.h @@ -0,0 +1,67 @@ +#ifndef GNSS_SDR_GLONASS_L1_CA_DLL_PLL_TRACKING_H_ +#define GNSS_SDR_GLONASS_L1_CA_DLL_PLL_TRACKING_H_ + +#include +#include "tracking_interface.h" +#include "glonass_l1_ca_dll_pll_tracking_cc.h" + + +class ConfigurationInterface; + +/*! + * \brief This class implements a code DLL + carrier PLL tracking loop + */ +class GlonassL1CaDllPllTracking : public TrackingInterface +{ +public: + GlonassL1CaDllPllTracking(ConfigurationInterface* configuration, + std::string role, + unsigned int in_streams, + unsigned int out_streams); + + virtual ~GlonassL1CaDllPllTracking(); + + std::string role() + { + return role_; + } + + //! Returns "GLONASS_L1_CA_DLL_PLL_Tracking" + std::string implementation() + { + return "GLONASS_L1_CA_DLL_PLL_Tracking"; + } + + 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(); + + /*! + * \brief Set tracking channel unique ID + */ + void set_channel(unsigned int channel); + + /*! + * \brief Set acquisition/tracking common Gnss_Synchro object pointer + * to efficiently exchange synchronization data between acquisition and tracking blocks + */ + void set_gnss_synchro(Gnss_Synchro* p_gnss_synchro); + + void start_tracking(); + +private: + glonass_l1_ca_dll_pll_tracking_cc_sptr tracking_; + size_t item_size_; + unsigned int channel_; + std::string role_; + unsigned int in_streams_; + unsigned int out_streams_; +}; + +#endif // GNSS_SDR_GLONASS_L1_CA_DLL_PLL_TRACKING_H_