Changes between Version 4 and Version 5 of NDF


Ignore:
Timestamp:
Jun 24, 2014, 2:10:36 PM (10 years ago)
Author:
stoecker
Comment:

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  • NDF

    v4 v5  
    33== Message header ==
    44||=Data field=||=DF NUMBER=||=DATA TYPE=||=NO. OF BITS=||=NOTES=||
    5 || Message Number || DF002 || uint12 || 12 || 4075 (proprietary number for this purpose) ||
     5|| Message Number       || DF002 || uint12 || 12 || 4075 (proprietary number for this purpose) ||
    66|| Reference Station ID || DF003 || uint12 || 12 || stream identification ||
    7 || Reserved field || || uint2 || 2 || reserved bits, maybe used to separate different type 4075 message, always 0 for NDF ||
    8 || Frame Count (FC) || || uint6 || 6 || Number of frame entries to follow ||
    9 || Frame Data || || || depends on FC and frame size || frame data according to following table ||
     7|| Reserved field       ||       || uint2  || 2 || reserved bits, maybe used to separate different type 4075 message, always 0 for NDF ||
     8|| Frame Count (FC)     ||       || uint6  || 6 || Number of frame entries to follow ||
     9|| Frame Entry          ||       ||        || depends on FC and frame size || frame data according to following table ||
    1010
    1111== Frame Entry ==
    1212
    1313||=Data field=||=DF NUMBER=||=DATA TYPE=||=NO. OF BITS=||=NOTES=||
    14 || Satellite system || || uint5 || 5 || 0 == GPS, 1 == GLONASS, 2 == Galileo, 3 = SBAS, 4 = QZSS, 5 = BDS ||
    15 || Satellite number || || uint6 || 6 || Satellite ID, specific for the satellite system always 6 bits (see table below) ||
    16 || Epoch Time       || || uint30 || 30 || Epoch time, specific for the satellite system always 30 bits (see table below) ||
    17 || Signal Type      || || uint5 || 5 || Signal type specification, index from MSM signal mask bit field (see DF395)||
    18 
     14|| Satellite system   || || uint5  ||  5 || 0 == GPS, 1 == GLONASS, 2 == Galileo, 3 = SBAS, 4 = QZSS, 5 = BDS ||
     15|| Satellite number   || || uint6  ||  6 || Satellite ID, specific for the satellite system always 6 bits (see table below) ||
     16|| Epoch Time         || || uint30 || 30 || Epoch time, specific for the satellite system always 30 bits (see table below) ||
     17|| Signal Type        || || uint5  ||  5 || Signal type specification, index from MSM signal mask bit field (see DF395)||
     18|| Frame Data Size (N)|| || uint12 || 12 || Number of bits to follow ||
     19|| Frame Data         || ||        ||  N || Bit data to be sent ||
    1920
    2021== Satellite ID (equal to MSM) ==
    … …  
    2627|| SBAS || || 120 == 1, ... ||
    2728|| QZSS || DF429 (with 6 bit) || 192 == 1, ... 202 == 10 ||
    28 || BDS ||
     29|| BDS ||  || 1 .. 37 ||
    2930
    3031== Epoch Time (accuracy in milli seconds) ==