mirror of
https://github.com/gnss-sdr/gnss-sdr
synced 2024-06-30 00:43:15 +00:00
7308745f05
Re-license CMake scripts with BSD-3-Clause
238 lines
6.3 KiB
C++
238 lines
6.3 KiB
C++
/*!
|
|
* \file beidou_b1i_pcps_acquisition.cc
|
|
* \brief Adapts a PCPS acquisition block to an AcquisitionInterface for
|
|
* BeiDou B1I signals
|
|
* \authors <ul>
|
|
* <li> Sergi Segura, 2018. sergi.segura.munoz(at)gmail.com
|
|
* </ul>
|
|
*
|
|
* -----------------------------------------------------------------------------
|
|
*
|
|
* GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
|
|
* This file is part of GNSS-SDR.
|
|
*
|
|
* Copyright (C) 2010-2020 (see AUTHORS file for a list of contributors)
|
|
* SPDX-License-Identifier: GPL-3.0-or-later
|
|
*
|
|
* -----------------------------------------------------------------------------
|
|
*/
|
|
|
|
#include "beidou_b1i_pcps_acquisition.h"
|
|
#include "Beidou_B1I.h"
|
|
#include "acq_conf.h"
|
|
#include "beidou_b1i_signal_replica.h"
|
|
#include "configuration_interface.h"
|
|
#include "gnss_sdr_flags.h"
|
|
#include <glog/logging.h>
|
|
#include <algorithm>
|
|
#include <memory>
|
|
|
|
#if HAS_STD_SPAN
|
|
#include <span>
|
|
namespace own = std;
|
|
#else
|
|
#include <gsl/gsl>
|
|
namespace own = gsl;
|
|
#endif
|
|
|
|
|
|
BeidouB1iPcpsAcquisition::BeidouB1iPcpsAcquisition(
|
|
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)
|
|
{
|
|
acq_parameters_.ms_per_code = 1;
|
|
acq_parameters_.SetFromConfiguration(configuration, role, BEIDOU_B1I_CODE_RATE_CPS, 10e6);
|
|
|
|
LOG(INFO) << "role " << role;
|
|
|
|
if (FLAGS_doppler_max != 0)
|
|
{
|
|
acq_parameters_.doppler_max = FLAGS_doppler_max;
|
|
}
|
|
doppler_max_ = acq_parameters_.doppler_max;
|
|
doppler_step_ = static_cast<unsigned int>(acq_parameters_.doppler_step);
|
|
fs_in_ = acq_parameters_.fs_in;
|
|
item_type_ = acq_parameters_.item_type;
|
|
item_size_ = acq_parameters_.it_size;
|
|
|
|
num_codes_ = acq_parameters_.sampled_ms;
|
|
code_length_ = static_cast<unsigned int>(std::floor(static_cast<double>(fs_in_) / (BEIDOU_B1I_CODE_RATE_CPS / BEIDOU_B1I_CODE_LENGTH_CHIPS)));
|
|
vector_length_ = static_cast<unsigned int>(std::floor(acq_parameters_.sampled_ms * acq_parameters_.samples_per_ms) * (acq_parameters_.bit_transition_flag ? 2.0 : 1.0));
|
|
code_ = std::vector<std::complex<float>>(vector_length_);
|
|
|
|
acquisition_ = pcps_make_acquisition(acq_parameters_);
|
|
DLOG(INFO) << "acquisition(" << acquisition_->unique_id() << ")";
|
|
|
|
if (item_type_ == "cbyte")
|
|
{
|
|
cbyte_to_float_x2_ = make_complex_byte_to_float_x2();
|
|
float_to_complex_ = gr::blocks::float_to_complex::make();
|
|
}
|
|
|
|
channel_ = 0;
|
|
threshold_ = 0.0;
|
|
gnss_synchro_ = nullptr;
|
|
|
|
if (in_streams_ > 1)
|
|
{
|
|
LOG(ERROR) << "This implementation only supports one input stream";
|
|
}
|
|
if (out_streams_ > 0)
|
|
{
|
|
LOG(ERROR) << "This implementation does not provide an output stream";
|
|
}
|
|
}
|
|
|
|
|
|
void BeidouB1iPcpsAcquisition::stop_acquisition()
|
|
{
|
|
acquisition_->set_active(false);
|
|
}
|
|
|
|
|
|
void BeidouB1iPcpsAcquisition::set_threshold(float threshold)
|
|
{
|
|
threshold_ = threshold;
|
|
|
|
acquisition_->set_threshold(threshold_);
|
|
}
|
|
|
|
|
|
void BeidouB1iPcpsAcquisition::set_doppler_max(uint32_t doppler_max)
|
|
{
|
|
doppler_max_ = doppler_max;
|
|
|
|
acquisition_->set_doppler_max(doppler_max_);
|
|
}
|
|
|
|
|
|
void BeidouB1iPcpsAcquisition::set_doppler_step(uint32_t doppler_step)
|
|
{
|
|
doppler_step_ = doppler_step;
|
|
|
|
acquisition_->set_doppler_step(doppler_step_);
|
|
}
|
|
|
|
|
|
void BeidouB1iPcpsAcquisition::set_gnss_synchro(Gnss_Synchro* gnss_synchro)
|
|
{
|
|
gnss_synchro_ = gnss_synchro;
|
|
|
|
acquisition_->set_gnss_synchro(gnss_synchro_);
|
|
}
|
|
|
|
|
|
signed int BeidouB1iPcpsAcquisition::mag()
|
|
{
|
|
return acquisition_->mag();
|
|
}
|
|
|
|
|
|
void BeidouB1iPcpsAcquisition::init()
|
|
{
|
|
acquisition_->init();
|
|
set_local_code();
|
|
}
|
|
|
|
|
|
void BeidouB1iPcpsAcquisition::set_local_code()
|
|
{
|
|
std::vector<std::complex<float>> code(code_length_);
|
|
|
|
beidou_b1i_code_gen_complex_sampled(code, gnss_synchro_->PRN, fs_in_, 0);
|
|
|
|
own::span<gr_complex> code_span(code_.data(), vector_length_);
|
|
for (unsigned int i = 0; i < num_codes_; i++)
|
|
{
|
|
std::copy_n(code.data(), code_length_, code_span.subspan(i * code_length_, code_length_).data());
|
|
}
|
|
|
|
acquisition_->set_local_code(code_.data());
|
|
}
|
|
|
|
|
|
void BeidouB1iPcpsAcquisition::reset()
|
|
{
|
|
acquisition_->set_active(true);
|
|
}
|
|
|
|
|
|
void BeidouB1iPcpsAcquisition::set_state(int state)
|
|
{
|
|
acquisition_->set_state(state);
|
|
}
|
|
|
|
|
|
void BeidouB1iPcpsAcquisition::connect(gr::top_block_sptr top_block)
|
|
{
|
|
if (item_type_ == "gr_complex" || item_type_ == "cshort")
|
|
{
|
|
// nothing to connect
|
|
}
|
|
else if (item_type_ == "cbyte")
|
|
{
|
|
// Since a byte-based acq implementation is not available,
|
|
// we just convert cshorts to gr_complex
|
|
top_block->connect(cbyte_to_float_x2_, 0, float_to_complex_, 0);
|
|
top_block->connect(cbyte_to_float_x2_, 1, float_to_complex_, 1);
|
|
top_block->connect(float_to_complex_, 0, acquisition_, 0);
|
|
}
|
|
else
|
|
{
|
|
LOG(WARNING) << item_type_ << " unknown acquisition item type";
|
|
}
|
|
}
|
|
|
|
|
|
void BeidouB1iPcpsAcquisition::disconnect(gr::top_block_sptr top_block)
|
|
{
|
|
if (item_type_ == "gr_complex" || item_type_ == "cshort")
|
|
{
|
|
// nothing to disconnect
|
|
}
|
|
else if (item_type_ == "cbyte")
|
|
{
|
|
top_block->disconnect(cbyte_to_float_x2_, 0, float_to_complex_, 0);
|
|
top_block->disconnect(cbyte_to_float_x2_, 1, float_to_complex_, 1);
|
|
top_block->disconnect(float_to_complex_, 0, acquisition_, 0);
|
|
}
|
|
else
|
|
{
|
|
LOG(WARNING) << item_type_ << " unknown acquisition item type";
|
|
}
|
|
}
|
|
|
|
|
|
gr::basic_block_sptr BeidouB1iPcpsAcquisition::get_left_block()
|
|
{
|
|
if (item_type_ == "gr_complex" || item_type_ == "cshort")
|
|
{
|
|
return acquisition_;
|
|
}
|
|
if (item_type_ == "cbyte")
|
|
{
|
|
return cbyte_to_float_x2_;
|
|
}
|
|
else
|
|
{
|
|
LOG(WARNING) << item_type_ << " unknown acquisition item type";
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
|
|
gr::basic_block_sptr BeidouB1iPcpsAcquisition::get_right_block()
|
|
{
|
|
return acquisition_;
|
|
}
|
|
|
|
|
|
void BeidouB1iPcpsAcquisition::set_resampler_latency(uint32_t latency_samples)
|
|
{
|
|
acquisition_->set_resampler_latency(latency_samples);
|
|
}
|