mirror of https://github.com/gnss-sdr/gnss-sdr
164 lines
4.8 KiB
C++
164 lines
4.8 KiB
C++
/*!
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* \file galileo_e5a_noncoherent_iq_acquisition_caf.h
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* \brief Adapts a PCPS acquisition block to an AcquisitionInterface for
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* Galileo E5a data and pilot Signals
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* \author Marc Sales, 2014. marcsales92(at)gmail.com
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* \based on work from:
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* <ul>
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* <li> Javier Arribas, 2011. jarribas(at)cttc.es
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* <li> Luis Esteve, 2012. luis(at)epsilon-formacion.com
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* <li> Marc Molina, 2013. marc.molina.pena@gmail.com
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* </ul>
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
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*
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* GNSS-SDR is a software defined Global Navigation
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* Satellite Systems receiver
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*
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* This file is part of GNSS-SDR.
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*
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* GNSS-SDR is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GNSS-SDR is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
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*
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* -------------------------------------------------------------------------
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*/
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#ifndef GALILEO_E5A_NONCOHERENT_IQ_ACQUISITION_CAF_H_
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#define GALILEO_E5A_NONCOHERENT_IQ_ACQUISITION_CAF_H_
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#include <string>
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#include "gnss_synchro.h"
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#include "acquisition_interface.h"
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#include "galileo_e5a_noncoherent_iq_acquisition_caf_cc.h"
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class ConfigurationInterface;
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class GalileoE5aNoncoherentIQAcquisitionCaf : public AcquisitionInterface
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{
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public:
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GalileoE5aNoncoherentIQAcquisitionCaf(ConfigurationInterface* configuration,
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std::string role, unsigned int in_streams,
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unsigned int out_streams);
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virtual ~GalileoE5aNoncoherentIQAcquisitionCaf();
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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_E5a_Noncoherent_IQ_Acquisition_CAF"
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*/
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inline std::string implementation() override
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{
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return "Galileo_E5a_Noncoherent_IQ_Acquisition_CAF";
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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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void set_channel(unsigned int channel) override;
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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 Galileo E5a code for 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 set to 1, ensures that acquisition starts at the
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* first available sample.
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* \param state - int=1 forces start of acquisition
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*/
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void set_state(int state);
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private:
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ConfigurationInterface* configuration_;
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galileo_e5a_noncoherentIQ_acquisition_caf_cc_sptr acquisition_cc_;
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size_t item_size_;
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std::string item_type_;
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unsigned int vector_length_;
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unsigned int code_length_;
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bool bit_transition_flag_;
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unsigned int channel_;
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float threshold_;
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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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long fs_in_;
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long if_;
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bool dump_;
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std::string dump_filename_;
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int Zero_padding;
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int CAF_window_hz_;
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std::complex<float>* codeI_;
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std::complex<float>* codeQ_;
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bool both_signal_components;
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Gnss_Synchro* gnss_synchro_;
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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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float calculate_threshold(float pfa);
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};
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#endif /* GALILEO_E5A_NONCOHERENT_IQ_ACQUISITION_CAF_H_ */
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