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https://github.com/gnss-sdr/gnss-sdr
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Updated Signal Generator File
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@ -5,7 +5,7 @@
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2019 (see AUTHORS file for a list of contributors)
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* Copyright (C) 2010-2020 (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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@ -22,6 +22,7 @@
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#include "GPS_L1_CA.h"
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#include "Galileo_E1.h"
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#include "Galileo_E5a.h"
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#include "Galileo_E5b.h"
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#include "galileo_e1_signal_processing.h"
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#include "galileo_e5_signal_processing.h"
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#include "glonass_l1_signal_processing.h"
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@ -124,6 +125,14 @@ void signal_generator_c::init()
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data_bit_duration_ms_.push_back(1e3 / GALILEO_E5A_SYMBOL_RATE_BPS);
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}
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else if (signal_[sat].at(0) == '7')
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{
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int codelen = static_cast<int>(GALILEO_E5B_CODE_LENGTH_CHIPS);
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samples_per_code_.push_back(round(static_cast<float>(fs_in_) / (GALILEO_E5B_CODE_CHIP_RATE_CPS / codelen)));
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num_of_codes_per_vector_.push_back(1);
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data_bit_duration_ms_.push_back(1e3 / GALILEO_E5B_SYMBOL_RATE_BPS);
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}
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else
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{
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samples_per_code_.push_back(round(static_cast<float>(fs_in_) / (GALILEO_E1_CODE_CHIP_RATE_CPS / GALILEO_E1_B_CODE_LENGTH_CHIPS)));
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@ -206,6 +215,21 @@ void signal_generator_c::generate_codes()
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}
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}
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}
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else if (signal_[sat].at(0) == '7')
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{
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std::array<char, 3> signal = {{'7', 'X', '\0'}};
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galileo_e5_b_code_gen_complex_sampled(sampled_code_data_[sat], PRN_[sat], signal, fs_in_,
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static_cast<int>(GALILEO_E5B_CODE_LENGTH_CHIPS) - delay_chips_[sat]);
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// noise
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if (noise_flag_)
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{
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for (unsigned int i = 0; i < vector_length_; i++)
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{
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sampled_code_data_[sat][i] *= sqrt(pow(10, CN0_dB_[sat] / 10) / BW_BB_ / 2);
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}
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}
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}
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else
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{
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// Generate one code-period of E1B signal
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@ -370,6 +394,37 @@ int signal_generator_c::general_work(int noutput_items __attribute__((unused)),
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ms_counter_[sat] = ms_counter_[sat] + static_cast<int>(round(1e3 * GALILEO_E5A_CODE_PERIOD_S));
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for (k = delay_samples; k < samples_per_code_[sat]; k++)
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{
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out[out_idx] += (gr_complex(sampled_code_data_[sat][out_idx].real() * data_modulation_[sat],
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sampled_code_data_[sat][out_idx].imag() * pilot_modulation_[sat])) *
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complex_phase_[out_idx];
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out_idx++;
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}
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}
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if (signal_[sat].at(0) == '7')
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{
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// EACH WORK outputs 1 modulated primary code
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int codelen = static_cast<int>(GALILEO_E5B_CODE_LENGTH_CHIPS);
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unsigned int delay_samples = (delay_chips_[sat] % codelen) * samples_per_code_[sat] / codelen;
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for (k = 0; k < delay_samples; k++)
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{
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out[out_idx] += (gr_complex(sampled_code_data_[sat][out_idx].real() * data_modulation_[sat],
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sampled_code_data_[sat][out_idx].imag() * pilot_modulation_[sat])) *
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complex_phase_[out_idx];
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out_idx++;
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}
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if (ms_counter_[sat] % data_bit_duration_ms_[sat] == 0 && data_flag_)
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{
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// New random data bit
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current_data_bit_int_[sat] = (uniform_dist(e1) % 2) == 0 ? 1 : -1;
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}
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data_modulation_[sat] = current_data_bit_int_[sat] * (GALILEO_E5B_I_SECONDARY_CODE.at((ms_counter_[sat] + delay_sec_[sat]) % 20) == '0' ? 1 : -1);
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pilot_modulation_[sat] = (GALILEO_E5B_Q_SECONDARY_CODE[PRN_[sat] - 1].at((ms_counter_[sat] + delay_sec_[sat]) % 100) == '0' ? 1 : -1);
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ms_counter_[sat] = ms_counter_[sat] + static_cast<int>(round(1e3 * GALILEO_E5B_CODE_PERIOD_S));
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for (k = delay_samples; k < samples_per_code_[sat]; k++)
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{
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out[out_idx] += (gr_complex(sampled_code_data_[sat][out_idx].real() * data_modulation_[sat],
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@ -5,7 +5,7 @@
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2019 (see AUTHORS file for a list of contributors)
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* Copyright (C) 2010-2020 (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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