mirror of https://github.com/gnss-sdr/gnss-sdr
242 lines
6.7 KiB
C++
242 lines
6.7 KiB
C++
/*!
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* \file gps_l1_ca_gps_sdr_acquisition.cc
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* \brief Implementation of an adapter of an acquisition module based
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* on the method in Gregory Heckler's GPS-SDR (see http://github.com/gps-sdr/gps-sdr)
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* to an AcquisitionInterface
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* \author Carlos Aviles, 2010. carlos.avilesr(at)googlemail.com
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* Luis Esteve, 2011. luis(at)epsilon-formacion.com
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2011 (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 <http://www.gnu.org/licenses/>.
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*
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* -------------------------------------------------------------------------
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*/
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#include "gps_l1_ca_gps_sdr_acquisition.h"
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#include "GPS_L1_CA.h"
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#include "configuration_interface.h"
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#include <gnuradio/gr_io_signature.h>
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#include <gnuradio/gr_stream_to_vector.h>
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#include <gnuradio/gr_vector_to_stream.h>
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#include <gnuradio/gr_complex_to_interleaved_short.h>
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#include <gnuradio/gr_interleaved_short_to_complex.h>
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#include <glog/log_severity.h>
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#include <glog/logging.h>
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using google::LogMessage;
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// Constructor
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GpsL1CaGpsSdrAcquisition::GpsL1CaGpsSdrAcquisition(
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ConfigurationInterface* configuration, std::string role,
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unsigned int in_streams, unsigned int out_streams,
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gr_msg_queue_sptr queue) :
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role_(role), in_streams_(in_streams), out_streams_(out_streams), queue_(
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queue)
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{
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std::string default_item_type = "gr_complex";
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std::string default_dump_filename = "./data/acquisition_";
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DLOG(INFO) << "role " << role;
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item_type_ = configuration->property(role + ".item_type",
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default_item_type);
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//vector_length_ = configuration->property(role + ".vector_length", 2048);
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gnss_satellite_ = Gnss_Satellite();
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fs_in_ = configuration->property("GNSS-SDR.internal_fs_hz", 2048000);
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if_ = configuration->property(role + ".ifreq", 0);
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dump_ = configuration->property(role + ".dump", false);
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doppler_max_ = 0;
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acquisition_ms_ = configuration->property(role + ".sampled_ms", 1);
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dump_filename_ = configuration->property(role + ".dump_filename",
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default_dump_filename);
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//vector_length_=ceil((float)fs_in_*((float)acquisition_ms_/1000));
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//--- Find number of samples per spreading code ----------------------------
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vector_length_ = round(fs_in_ / (GPS_L1_CA_CODE_RATE_HZ / GPS_L1_CA_CODE_LENGTH_CHIPS));
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printf("vector_length_ %i\n\r", vector_length_);
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if (item_type_.compare("gr_complex") == 0)
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{
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item_size_ = sizeof(gr_complex);
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acquisition_cc_ = gps_l1_ca_gps_sdr_make_acquisition_cc(
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acquisition_ms_, if_, fs_in_, vector_length_, queue_, dump_,
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dump_filename_);
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stream_to_vector_ = gr_make_stream_to_vector(item_size_,
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vector_length_);
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}
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else
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{
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LOG_AT_LEVEL(WARNING) << item_type_ << " unknown item type.";
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}
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DLOG(INFO) << "stream_to_vector(" << stream_to_vector_->unique_id()
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<< ")";
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}
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// Destructor
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GpsL1CaGpsSdrAcquisition::~GpsL1CaGpsSdrAcquisition()
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{}
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// Set satellite
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void GpsL1CaGpsSdrAcquisition::set_satellite(Gnss_Satellite satellite)
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{
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gnss_satellite_ = Gnss_Satellite(satellite.get_system(), satellite.get_PRN());
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if (item_type_.compare("gr_complex") == 0)
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{
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acquisition_cc_->set_satellite(gnss_satellite_);
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}
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}
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// Set channel
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void GpsL1CaGpsSdrAcquisition::set_channel(unsigned int channel)
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{
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channel_ = channel;
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if (item_type_.compare("gr_complex") == 0)
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{
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acquisition_cc_->set_channel(channel_);
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}
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}
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// Set acquisition threshold
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void GpsL1CaGpsSdrAcquisition::set_threshold(float threshold)
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{
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threshold_ = threshold;
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if (item_type_.compare("gr_complex") == 0)
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{
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acquisition_cc_->set_threshold(threshold_);
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}
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}
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// Set maximum Doppler shift
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void GpsL1CaGpsSdrAcquisition::set_doppler_max(unsigned int doppler_max)
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{
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doppler_max_ = doppler_max;
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if (item_type_.compare("gr_complex") == 0)
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{
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acquisition_cc_->set_doppler_max(doppler_max_);
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}
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}
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// Set Channel Queue
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void GpsL1CaGpsSdrAcquisition::set_channel_queue(
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concurrent_queue<int> *channel_internal_queue)
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{
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channel_internal_queue_ = channel_internal_queue;
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if (item_type_.compare("gr_complex") == 0)
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{
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acquisition_cc_->set_channel_queue(channel_internal_queue_);
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}
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}
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signed int GpsL1CaGpsSdrAcquisition::prn_code_phase()
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{
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if (item_type_.compare("gr_complex") == 0)
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{
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return acquisition_cc_->prn_code_phase();
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}
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}
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float GpsL1CaGpsSdrAcquisition::doppler_freq_shift()
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{
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if (item_type_.compare("gr_complex") == 0)
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{
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return acquisition_cc_->doppler_freq_phase();
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}
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}
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signed int GpsL1CaGpsSdrAcquisition::mag()
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{
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if (item_type_.compare("gr_complex") == 0)
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{
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return acquisition_cc_->mag();
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}
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}
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void GpsL1CaGpsSdrAcquisition::reset()
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{
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if (item_type_.compare("gr_complex") == 0)
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{
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acquisition_cc_->set_active(true);
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}
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}
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unsigned long int GpsL1CaGpsSdrAcquisition::get_sample_stamp()
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{
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if (item_type_.compare("gr_complex") == 0)
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{
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return acquisition_cc_->get_sample_stamp();
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}
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}
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void GpsL1CaGpsSdrAcquisition::connect(gr_top_block_sptr top_block)
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{
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if (item_type_.compare("gr_complex") == 0)
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{
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//top_block->connect(stream_to_vector_, 0, vector_to_stream_,0);
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top_block->connect(stream_to_vector_, 0, acquisition_cc_, 0);
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//top_block->connect(acquisition_cc_, 0, vector_to_stream_, 0);
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}
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}
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void GpsL1CaGpsSdrAcquisition::disconnect(gr_top_block_sptr top_block)
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{
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if (item_type_.compare("gr_complex") == 0)
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{
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top_block->disconnect(stream_to_vector_, 0, acquisition_cc_, 0);
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//top_block->disconnect(acquisition_cc_, 0, vector_to_stream_, 0);
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}
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}
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gr_basic_block_sptr GpsL1CaGpsSdrAcquisition::get_left_block()
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{
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return stream_to_vector_;
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}
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gr_basic_block_sptr GpsL1CaGpsSdrAcquisition::get_right_block()
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{
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if (item_type_.compare("gr_complex") == 0)
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{
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return acquisition_cc_;
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}
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}
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