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https://github.com/gnss-sdr/gnss-sdr
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76 lines
3.1 KiB
C++
76 lines
3.1 KiB
C++
/*!
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* \file Galileo_CNAV.h
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* \brief Galileo CNAV mesage constants. Data from:
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* Galileo High Accuracy Service E6-B Signal-In-Space Message Specification v1.2
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* (April 2020).
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* \author Carles Fernandez-Prades, 2020. cfernandez(at)cttc.es
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*
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*
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* -----------------------------------------------------------------------------
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*
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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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*
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* This file is part of GNSS-SDR.
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*
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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_CNAV_H
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#define GNSS_SDR_GALILEO_CNAV_H
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#include <cstdint>
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#include <utility>
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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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// Galileo CNAV message structure
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constexpr int32_t GALILEO_CNAV_SYMBOLS_PER_PAGE = 1000; //!< Total numer of symbols per HAS page including the sync pattern
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constexpr int32_t GALILEO_CNAV_PREAMBLE_PERIOD_SYMBOLS = 1000;
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constexpr int32_t GALILEO_CNAV_PAGE_MS = 1; //!< Duration in ms of a CNAV page
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constexpr int32_t GALILEO_CNAV_INTERLEAVER_ROWS = 8;
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constexpr int32_t GALILEO_CNAV_INTERLEAVER_COLS = 123;
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constexpr int32_t GALILEO_CNAV_TELEMETRY_RATE_BITS_SECOND = 1000; // bps
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constexpr int32_t GALILEO_CNAV_HAS_PAGE_DATA_BITS = 448;
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constexpr int32_t GALILEO_CNAV_PAGE_RESERVED_BITS = 14;
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constexpr int32_t GALILEO_CNAV_BITS_FOR_CRC = GALILEO_CNAV_HAS_PAGE_DATA_BITS + GALILEO_CNAV_PAGE_RESERVED_BITS; // 462
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constexpr int32_t GALILEO_CNAV_BYTES_FOR_CRC = 60;
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constexpr int32_t GALILEO_CNAV_CRC_LENGTH = 24;
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constexpr int32_t GALILEO_CNAV_MESSAGE_BITS_PER_PAGE = 424;
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constexpr int32_t GALILEO_CNAV_PAGE_HEADER_BITS = 24;
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constexpr int32_t GALILEO_CNAV_PREAMBLE_LENGTH_BITS = 16;
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constexpr int32_t GALILEO_CNAV_MAX_NUMBER_ENCODED_BLOCKS = 255;
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constexpr int32_t GALILEO_CNAV_MT1_HEADER_BITS = 32;
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constexpr char GALILEO_CNAV_PREAMBLE[17] = "1011011101110000";
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const std::pair<int32_t, int32_t> GALILEO_HAS_STATUS({1, 2});
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const std::pair<int32_t, int32_t> GALILEO_HAS_MESSAGE_TYPE({5, 2});
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const std::pair<int32_t, int32_t> GALILEO_HAS_MESSAGE_ID({7, 5});
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const std::pair<int32_t, int32_t> GALILEO_HAS_MESSAGE_SIZE({12, 5});
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const std::pair<int32_t, int32_t> GALILEO_HAS_MESSAGE_PAGE_ID({17, 8});
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const std::pair<int32_t, int32_t> GALILEO_MT1_HEADER_TOH({1, 12});
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const std::pair<int32_t, int32_t> GALILEO_MT1_HEADER_MASK_FLAG({13, 1});
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const std::pair<int32_t, int32_t> GALILEO_MT1_HEADER_ORBIT_CORRECTION_FLAG({14, 1});
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const std::pair<int32_t, int32_t> GALILEO_MT1_HEADER_CLOCK_FULLSET_FLAG({15, 1});
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const std::pair<int32_t, int32_t> GALILEO_MT1_HEADER_CLOCK_SUBSET_FLAG({16, 1});
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const std::pair<int32_t, int32_t> GALILEO_MT1_HEADER_CODE_BIAS_FLAG({17, 1});
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const std::pair<int32_t, int32_t> GALILEO_MT1_HEADER_PHASE_BIAS_FLAG({18, 1});
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const std::pair<int32_t, int32_t> GALILEO_MT1_HEADER_URA_FLAG({19, 1});
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const std::pair<int32_t, int32_t> GALILEO_MT1_HEADER_MASK_ID({23, 5});
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const std::pair<int32_t, int32_t> GALILEO_MT1_HEADER_IOD_ID({28, 5});
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/** \} */
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/** \} */
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#endif // GNSS_SDR_GALILEO_CNAV_H
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