mirror of https://github.com/gnss-sdr/gnss-sdr
118 lines
5.2 KiB
C++
118 lines
5.2 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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* 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_GALILEO_CNAV_H
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#define GNSS_SDR_GALILEO_CNAV_H
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#include <cstddef>
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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 = 58;
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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_SYMBOLS_ENCODED_BLOCK = 255;
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constexpr int32_t GALILEO_CNAV_MT1_HEADER_BITS = 32;
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constexpr int32_t GALILEO_CNAV_OCTETS_IN_SUBPAGE = 53;
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constexpr int32_t GALILEO_CNAV_INFORMATION_VECTOR_LENGTH = 32;
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constexpr char GALILEO_CNAV_PREAMBLE[17] = "1011011101110000";
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// Galileo HAS message field lengths
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constexpr size_t HAS_MSG_NSYS_LENGTH = 4;
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constexpr size_t HAS_MSG_ID_MASK_LENGTH = 4;
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constexpr size_t HAS_MSG_SATELLITE_MASK_LENGTH = 40;
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constexpr size_t HAS_MSG_SIGNAL_MASK_LENGTH = 16;
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constexpr size_t HAS_MSG_NAV_MESSAGE_LENGTH = 3;
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constexpr size_t HAS_MSG_MASK_RESERVED_LENGTH = 6;
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constexpr size_t HAS_MSG_VALIDITY_INDEX_LENGTH = 4;
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constexpr size_t HAS_MSG_IOD_GPS_LENGTH = 8;
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constexpr size_t HAS_MSG_IOD_GAL_LENGTH = 10;
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constexpr size_t HAS_MSG_DELTA_RADIAL_LENGTH = 14;
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constexpr size_t HAS_MSG_DELTA_ALONG_TRACK_LENGTH = 12;
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constexpr size_t HAS_MSG_DELTA_CROSS_TRACK_LENGTH = 12;
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constexpr size_t HAS_MSG_DELTA_CLOCK_C0_MULTIPLIER_LENGTH = 2;
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constexpr size_t HAS_MSG_DELTA_CLOCK_C0_LENGTH = 14;
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constexpr size_t HAS_MSG_NSYSPRIME_LENGTH = 4;
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constexpr size_t HAS_MSG_ID_CLOCK_SUBSET_LENGTH = 4;
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constexpr size_t HAS_MSG_DELTA_CLOCK_MULTIPLIER_SUBSET_LENGTH = 2;
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constexpr size_t HAS_MSG_DELTA_CLOCK_C0_SUBSET_LENGTH = 13;
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constexpr size_t HAS_MSG_CODE_BIAS_LENGTH = 11;
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constexpr size_t HAS_MSG_PHASE_BIAS_LENGTH = 11;
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constexpr size_t HAS_MSG_PHASE_DISCONTINUITY_INDICATOR_LENGTH = 2;
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constexpr size_t HAS_MSG_URA_LENGTH = 2;
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constexpr int32_t HAS_MSG_NUMBER_MASK_IDS = 32;
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constexpr int32_t HAS_MSG_NUMBER_GNSS_IDS = 16;
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constexpr int32_t HAS_MSG_NUMBER_MESSAGE_IDS = 32;
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constexpr int32_t HAS_MSG_NUMBER_SATELLITE_IDS = 40;
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constexpr int32_t HAS_MSG_NUMBER_SIGNAL_MASKS = 16;
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constexpr float HAS_MSG_DELTA_RADIAL_SCALE_FACTOR = 0.0025;
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constexpr float HAS_MSG_DELTA_ALONG_TRACK_SCALE_FACTOR = 0.008;
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constexpr float HAS_MSG_DELTA_CROSS_TRACK_SCALE_FACTOR = 0.008;
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constexpr float HAS_MSG_DELTA_CLOCK_SCALE_FACTOR = 0.0025;
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constexpr float HAS_MSG_CODE_BIAS_SCALE_FACTOR = 0.02;
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constexpr float HAS_MSG_PHASE_BIAS_SCALE_FACTOR = 0.01;
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constexpr uint16_t HAS_MSG_NUMBER_MAX_TOH = 3599;
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constexpr uint8_t HAS_MSG_GPS_SYSTEM = 0; // Table 8 ICD v1.2
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constexpr uint8_t HAS_MSG_GALILEO_SYSTEM = 2; // Table 8 ICD v1.2
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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_RESERVED({3, 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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