54 lines
1.6 KiB
Plaintext
54 lines
1.6 KiB
Plaintext
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@000217047C020143;
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@0002170A69FE5D781F835AFF22;
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@0002170759188D781F832320C1B8E31C200772A4;
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@000217047C02 0143;
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当启用MLAT格式时有下面三种格式
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@ + 6字节（48位）MLAT时间戳，1 字节信号电平，2 字节 Mode-AC + ;
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@ + 6字节（48位）MLAT时间戳，1 字节信号电平，7 字节 Mode-S 短帧 + ;
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@ + 6字节（48位）MLAT时间戳，1 字节信号电平，14 字节 Mode-S 长帧 + ;
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1字节信号电平
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功率大小 以 dBm 为单位
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时间戳格式 （18位 当天的秒数 + 30位 当天的纳秒数）
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例： 时间戳 244bbb9ac9f0
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高18位 秒数 = 37166
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低30位 纳秒 = 999999984
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例如：
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@016CE3671C74 7700;
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@016CE3671C74 23FFE7AB7BFCAB;
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@016CE3671AA8 A800199A8BB80030A8000628F400;
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参考链接
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https://wiki.jetvision.de/wiki/Mode-S_Beast:Data_Output_Formats
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https://wiki.jetvision.de/wiki/Radarcape:Version_History#The_GPS_timestamp
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https://wiki.jetvision.de/wiki/Radarcape:Version_History#Signal_level_in_dBm
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1110 0000 0011 0000
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2) https://en.wikipedia.org/wiki/Binary_scaling#Binary_angles
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Status Flags:
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1xxx xxxx xxxx xxxx - GPS device detected -> Using absolute timestamp
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x1xx xxxx xxxx xxxx - GPS valid (GGA, RMC present)
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xx1x xxxx xxxx xxxx - GPS currently has a valid fix
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xxx1 xxxx xxxx xxxx - High accuracy absolute time is available via PPS
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xxxx xxxx 1xxx xxxx - TX-Queue overflow since start-up (normal if HW-handshaking is used)
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xxxx xxxx x1xx xxxx - TX-Queue overflow during last second (probably due to HW-handshaking)
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xxxx xxxx xx1x xxxx - Excessive NMEA found (other than GGA/RMC)
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1a48
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0118
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9607f81e
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e030
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000000000000000000000000000000000000
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e030
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