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Optimizing GPS L1 CA bit transitiion detection by using a bit transition slope pattern

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This commit is contained in:
Javier Arribas
2021-09-27 16:11:17 +02:00
parent e9f7a36663
commit d6ed2698e6
2 changed files with 5 additions and 3 deletions
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src/core/system_parameters/GPS_L1_CA.h
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@@ -71,6 +71,8 @@ constexpr int32_t GPS_SUBFRAME_MS = 6000;
constexpr int32_t GPS_WORD_BITS = 30; //!< Number of bits per word in the NAV message [bits]
constexpr char GPS_CA_PREAMBLE[9] = "10001011";
constexpr char GPS_CA_PREAMBLE_SYMBOLS_STR[161] = "1111111111111111111100000000000000000000000000000000000000000000000000000000000011111111111111111111000000000000000000001111111111111111111111111111111111111111";
constexpr int32_t GPS_CA_BIT_TRANSITION_SYMBOLS_LENGTH_SYMBOLS = 40;
constexpr char GPS_CA_BIT_TRANSITION_SYMBOLS_STR[41] = "1111111111111111111100000000000000000000";
// GPS NAVIGATION MESSAGE STRUCTURE
// NAVIGATION MESSAGE FIELDS POSITIONS (from IS-GPS-200M Appendix II)