mirror of https://github.com/gnss-sdr/gnss-sdr
179 lines
4.8 KiB
C++
179 lines
4.8 KiB
C++
/*!
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* \file galileo_e1_pcps_quicksync_ambiguous_acquisition.h
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* \brief Adapts a PCPS acquisition block to an AcquisitionInterface for Galileo E1 Signals
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* \date June, 2014
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* \author Damian Miralles Sanchez. dmiralles2009@gmail.com
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*
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* -----------------------------------------------------------------------------
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*
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* GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
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* This file is part of GNSS-SDR.
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*
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* Copyright (C) 2010-2020 (see AUTHORS file for a list of contributors)
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* SPDX-License-Identifier: GPL-3.0-or-later
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*
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* -----------------------------------------------------------------------------
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*/
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#ifndef GNSS_SDR_GALILEO_E1_PCPS_QUICKSYNC_AMBIGUOUS_ACQUISITION_H
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#define GNSS_SDR_GALILEO_E1_PCPS_QUICKSYNC_AMBIGUOUS_ACQUISITION_H
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#include "channel_fsm.h"
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#include "gnss_synchro.h"
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#include "pcps_quicksync_acquisition_cc.h"
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#include <gnuradio/blocks/stream_to_vector.h>
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#include <memory>
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#include <string>
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#include <vector>
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/** \addtogroup Acquisition
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* \{ */
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/** \addtogroup Acq_adapters
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* \{ */
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class ConfigurationInterface;
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/*!
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* \brief This class adapts a PCPS acquisition block to an
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* AcquisitionInterface for Galileo E1 Signals
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*/
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class GalileoE1PcpsQuickSyncAmbiguousAcquisition : public AcquisitionInterface
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{
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public:
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GalileoE1PcpsQuickSyncAmbiguousAcquisition(
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const ConfigurationInterface* configuration,
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const std::string& role,
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unsigned int in_streams,
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unsigned int out_streams);
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~GalileoE1PcpsQuickSyncAmbiguousAcquisition() = default;
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inline std::string role() override
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{
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return role_;
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}
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/*!
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* \brief Returns "Galileo_E1_PCPS_Ambiguous_Acquisition"
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*/
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inline std::string implementation() override
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{
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return "Galileo_E1_PCPS_QuickSync_Ambiguous_Acquisition";
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}
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inline size_t item_size() override
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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) override;
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void disconnect(gr::top_block_sptr top_block) override;
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gr::basic_block_sptr get_left_block() override;
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gr::basic_block_sptr get_right_block() override;
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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
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* tracking blocks
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*/
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void set_gnss_synchro(Gnss_Synchro* p_gnss_synchro) override;
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/*!
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* \brief Set acquisition channel unique ID
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*/
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inline void set_channel(unsigned int channel) override
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{
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channel_ = channel;
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acquisition_cc_->set_channel(channel_);
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}
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/*!
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* \brief Set channel fsm associated to this acquisition instance
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*/
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inline void set_channel_fsm(std::weak_ptr<ChannelFsm> channel_fsm) override
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{
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channel_fsm_ = channel_fsm;
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acquisition_cc_->set_channel_fsm(channel_fsm);
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}
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/*!
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* \brief Set statistics threshold of PCPS algorithm
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*/
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void set_threshold(float threshold) override;
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/*!
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* \brief Set maximum Doppler off grid search
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*/
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void set_doppler_max(unsigned int doppler_max) override;
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/*!
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* \brief Set Doppler steps for the grid search
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*/
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void set_doppler_step(unsigned int doppler_step) override;
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/*!
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* \brief Initializes acquisition algorithm.
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*/
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void init() override;
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/*!
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* \brief Sets local code for Galileo E1 PCPS acquisition algorithm.
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*/
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void set_local_code() override;
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/*!
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* \brief Returns the maximum peak of grid search
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*/
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signed int mag() override;
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/*!
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* \brief Restart acquisition algorithm
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*/
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void reset() override;
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/*!
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* \brief If state = 1, it forces the block to start acquiring from the first sample
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*/
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void set_state(int state) override;
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/*!
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* \brief Stop running acquisition
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*/
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void stop_acquisition() override;
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void set_resampler_latency(uint32_t latency_samples __attribute__((unused))) override{};
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private:
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float calculate_threshold(float pfa);
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const ConfigurationInterface* configuration_;
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pcps_quicksync_acquisition_cc_sptr acquisition_cc_;
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gr::blocks::stream_to_vector::sptr stream_to_vector_;
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std::weak_ptr<ChannelFsm> channel_fsm_;
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std::vector<std::complex<float>> code_;
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std::string item_type_;
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std::string role_;
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std::string dump_filename_;
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Gnss_Synchro* gnss_synchro_;
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int64_t fs_in_;
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size_t item_size_;
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float threshold_;
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unsigned int vector_length_;
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unsigned int code_length_;
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unsigned int channel_;
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unsigned int doppler_max_;
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unsigned int doppler_step_;
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unsigned int sampled_ms_;
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unsigned int max_dwells_;
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unsigned int folding_factor_;
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unsigned int in_streams_;
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unsigned int out_streams_;
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bool bit_transition_flag_;
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bool dump_;
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};
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/** \} */
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/** \} */
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#endif // GNSS_SDR_GALILEO_E1_PCPS_QUICKSYNC_AMBIGUOUS_ACQUISITION_H
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