mirror of
https://github.com/gnss-sdr/gnss-sdr
synced 2024-09-20 19:29:48 +00:00
225 lines
6.9 KiB
C++
225 lines
6.9 KiB
C++
/*!
|
|
* \file glonass_l1_ca_dll_pll_c_aid_tracking.cc
|
|
* \brief Interface of an adapter of a DLL+PLL tracking loop block
|
|
* for Glonass L1 C/A to a TrackingInterface
|
|
* \author Gabriel Araujo, 2017. gabriel.araujo.5000(at)gmail.com
|
|
* \author Luis Esteve, 2017. luis(at)epsilon-formacion.com
|
|
* \author Damian Miralles, 2017. dmiralles2009(at)gmail.com
|
|
*
|
|
*
|
|
* Code DLL + carrier PLL according to the algorithms described in:
|
|
* K.Borre, D.M.Akos, N.Bertelsen, P.Rinder, and S.H.Jensen,
|
|
* A Software-Defined GPS and Galileo Receiver. A Single-Frequency
|
|
* Approach, Birkha user, 2007
|
|
*
|
|
* -----------------------------------------------------------------------------
|
|
*
|
|
* Copyright (C) 2010-2020 (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.
|
|
*
|
|
* SPDX-License-Identifier: GPL-3.0-or-later
|
|
*
|
|
* -----------------------------------------------------------------------------
|
|
*/
|
|
|
|
#include "glonass_l1_ca_dll_pll_c_aid_tracking.h"
|
|
#include "GLONASS_L1_L2_CA.h"
|
|
#include "configuration_interface.h"
|
|
#include "gnss_sdr_flags.h"
|
|
#include <glog/logging.h>
|
|
|
|
|
|
GlonassL1CaDllPllCAidTracking::GlonassL1CaDllPllCAidTracking(
|
|
const ConfigurationInterface* configuration, const 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 ########################
|
|
const std::string default_item_type("gr_complex");
|
|
item_type_ = configuration->property(role + ".item_type", default_item_type);
|
|
int fs_in_deprecated = configuration->property("GNSS-SDR.internal_fs_hz", 2048000);
|
|
int fs_in = configuration->property("GNSS-SDR.internal_fs_sps", fs_in_deprecated);
|
|
bool dump = configuration->property(role + ".dump", false);
|
|
float pll_bw_hz = configuration->property(role + ".pll_bw_hz", static_cast<float>(50.0));
|
|
if (FLAGS_pll_bw_hz != 0.0)
|
|
{
|
|
pll_bw_hz = static_cast<float>(FLAGS_pll_bw_hz);
|
|
}
|
|
float dll_bw_hz = configuration->property(role + ".dll_bw_hz", static_cast<float>(2.0));
|
|
if (FLAGS_dll_bw_hz != 0.0)
|
|
{
|
|
dll_bw_hz = static_cast<float>(FLAGS_dll_bw_hz);
|
|
}
|
|
float pll_bw_narrow_hz = configuration->property(role + ".pll_bw_narrow_hz", static_cast<float>(20.0));
|
|
float dll_bw_narrow_hz = configuration->property(role + ".dll_bw_narrow_hz", static_cast<float>(2.0));
|
|
int extend_correlation_ms = configuration->property(role + ".extend_correlation_ms", 1);
|
|
|
|
float early_late_space_chips = configuration->property(role + ".early_late_space_chips", static_cast<float>(0.5));
|
|
const std::string default_dump_filename("./track_ch");
|
|
std::string dump_filename = configuration->property(role + ".dump_filename", default_dump_filename);
|
|
const auto vector_length = static_cast<int>(std::round(fs_in / (GLONASS_L1_CA_CODE_RATE_CPS / GLONASS_L1_CA_CODE_LENGTH_CHIPS)));
|
|
|
|
// ################# MAKE TRACKING GNURadio object ###################
|
|
if (item_type_ == "gr_complex")
|
|
{
|
|
item_size_ = sizeof(gr_complex);
|
|
tracking_cc = glonass_l1_ca_dll_pll_c_aid_make_tracking_cc(
|
|
fs_in,
|
|
vector_length,
|
|
dump,
|
|
dump_filename,
|
|
pll_bw_hz,
|
|
dll_bw_hz,
|
|
pll_bw_narrow_hz,
|
|
dll_bw_narrow_hz,
|
|
extend_correlation_ms,
|
|
early_late_space_chips);
|
|
DLOG(INFO) << "tracking(" << tracking_cc->unique_id() << ")";
|
|
}
|
|
else if (item_type_ == "cshort")
|
|
{
|
|
item_size_ = sizeof(lv_16sc_t);
|
|
tracking_sc = glonass_l1_ca_dll_pll_c_aid_make_tracking_sc(
|
|
fs_in,
|
|
vector_length,
|
|
dump,
|
|
dump_filename,
|
|
pll_bw_hz,
|
|
dll_bw_hz,
|
|
pll_bw_narrow_hz,
|
|
dll_bw_narrow_hz,
|
|
extend_correlation_ms,
|
|
early_late_space_chips);
|
|
DLOG(INFO) << "tracking(" << tracking_sc->unique_id() << ")";
|
|
}
|
|
else
|
|
{
|
|
item_size_ = sizeof(gr_complex);
|
|
LOG(WARNING) << item_type_ << " unknown tracking item type.";
|
|
}
|
|
channel_ = 0;
|
|
if (in_streams_ > 1)
|
|
{
|
|
LOG(ERROR) << "This implementation only supports one input stream";
|
|
}
|
|
if (out_streams_ > 1)
|
|
{
|
|
LOG(ERROR) << "This implementation only supports one output stream";
|
|
}
|
|
}
|
|
|
|
|
|
void GlonassL1CaDllPllCAidTracking::stop_tracking()
|
|
{
|
|
}
|
|
|
|
|
|
void GlonassL1CaDllPllCAidTracking::start_tracking()
|
|
{
|
|
if (item_type_ == "gr_complex")
|
|
{
|
|
tracking_cc->start_tracking();
|
|
}
|
|
else if (item_type_ == "cshort")
|
|
{
|
|
tracking_sc->start_tracking();
|
|
}
|
|
else
|
|
{
|
|
LOG(WARNING) << item_type_ << " unknown tracking item type";
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Set tracking channel unique ID
|
|
*/
|
|
void GlonassL1CaDllPllCAidTracking::set_channel(unsigned int channel)
|
|
{
|
|
channel_ = channel;
|
|
|
|
if (item_type_ == "gr_complex")
|
|
{
|
|
tracking_cc->set_channel(channel);
|
|
}
|
|
else if (item_type_ == "cshort")
|
|
{
|
|
tracking_sc->set_channel(channel);
|
|
}
|
|
else
|
|
{
|
|
LOG(WARNING) << item_type_ << " unknown tracking item type";
|
|
}
|
|
}
|
|
|
|
|
|
void GlonassL1CaDllPllCAidTracking::set_gnss_synchro(Gnss_Synchro* p_gnss_synchro)
|
|
{
|
|
if (item_type_ == "gr_complex")
|
|
{
|
|
tracking_cc->set_gnss_synchro(p_gnss_synchro);
|
|
}
|
|
else if (item_type_ == "cshort")
|
|
{
|
|
tracking_sc->set_gnss_synchro(p_gnss_synchro);
|
|
}
|
|
else
|
|
{
|
|
LOG(WARNING) << item_type_ << " unknown tracking item type";
|
|
}
|
|
}
|
|
|
|
|
|
void GlonassL1CaDllPllCAidTracking::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 GlonassL1CaDllPllCAidTracking::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 GlonassL1CaDllPllCAidTracking::get_left_block()
|
|
{
|
|
if (item_type_ == "gr_complex")
|
|
{
|
|
return tracking_cc;
|
|
}
|
|
if (item_type_ == "cshort")
|
|
{
|
|
return tracking_sc;
|
|
}
|
|
LOG(WARNING) << item_type_ << " unknown tracking item type";
|
|
return nullptr;
|
|
}
|
|
|
|
|
|
gr::basic_block_sptr GlonassL1CaDllPllCAidTracking::get_right_block()
|
|
{
|
|
if (item_type_ == "gr_complex")
|
|
{
|
|
return tracking_cc;
|
|
}
|
|
if (item_type_ == "cshort")
|
|
{
|
|
return tracking_sc;
|
|
}
|
|
|
|
|
|
LOG(WARNING) << item_type_ << " unknown tracking item type";
|
|
return nullptr;
|
|
}
|