mirror of https://github.com/gnss-sdr/gnss-sdr
55 lines
2.4 KiB
C++
55 lines
2.4 KiB
C++
/*!
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* \file Beidou_B3I.h
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* \brief Defines system parameters for BeiDou B3I signal and DNAV data
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* \author Damian Miralles, 2019. 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_BEIDOU_B3I_H
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#define GNSS_SDR_BEIDOU_B3I_H
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#include "gnss_frequencies.h"
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#include <cstdint>
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/** \addtogroup Core
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* \{ */
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/** \addtogroup System_Parameters
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* \{ */
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// carrier and code frequencies
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constexpr double BEIDOU_B3I_FREQ_HZ = FREQ3_BDS; //!< BeiDou B3I [Hz]
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constexpr double BEIDOU_B3I_CODE_RATE_CPS = 10.23e6; //!< BeiDou B3I code rate [chips/s]
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constexpr double BEIDOU_B3I_CODE_LENGTH_CHIPS = 10230.0; //!< BeiDou B3I code length [chips]
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constexpr double BEIDOU_B3I_CODE_PERIOD_S = 0.001; //!< BeiDou B3I code period [seconds]
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constexpr double BEIDOU_B3I_PREAMBLE_DURATION_S = 0.220;
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constexpr uint32_t BEIDOU_B3I_CODE_PERIOD_MS = 1; //!< BeiDou B3I code period [ms]
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constexpr uint32_t BEIDOU_B3I_PREAMBLE_LENGTH_BITS = 11;
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constexpr uint32_t BEIDOU_B3I_PREAMBLE_LENGTH_SYMBOLS = 220; // **************
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constexpr int32_t BEIDOU_B3I_SECONDARY_CODE_LENGTH = 20;
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constexpr int32_t BEIDOU_B3I_GEO_PREAMBLE_LENGTH_SYMBOLS = 22;
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constexpr int32_t BEIDOU_B3I_PREAMBLE_DURATION_MS = 220;
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constexpr int32_t BEIDOU_B3I_TELEMETRY_RATE_BITS_SECOND = 50; //!< D1 NAV message bit rate [bits/s]
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constexpr int32_t BEIDOU_B3I_TELEMETRY_SYMBOLS_PER_BIT = 20;
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constexpr int32_t BEIDOU_B3I_GEO_TELEMETRY_SYMBOLS_PER_BIT = 2; // *************
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constexpr int32_t BEIDOU_B3I_TELEMETRY_SYMBOL_PERIOD_MS = static_cast<int32_t>(static_cast<uint32_t>(BEIDOU_B3I_TELEMETRY_SYMBOLS_PER_BIT) * BEIDOU_B3I_CODE_PERIOD_MS);
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constexpr int32_t BEIDOU_B3I_TELEMETRY_RATE_SYMBOLS_SECOND = BEIDOU_B3I_TELEMETRY_RATE_BITS_SECOND * BEIDOU_B3I_TELEMETRY_SYMBOLS_PER_BIT;
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constexpr char BEIDOU_B3I_SECONDARY_CODE_STR[21] = "00000100110101001110";
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constexpr char BEIDOU_B3I_GEO_PREAMBLE_SYMBOLS_STR[23] = "1111110000001100001100";
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constexpr char BEIDOU_B3I_D2_SECONDARY_CODE_STR[3] = "00";
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/** \} */
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/** \} */
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#endif // GNSS_SDR_BEIDOU_B3I_H
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