readme.fileformat

The OpenGPSRec receiver software runs on the real time operating system RTAI-Linux. It compiles with

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                      Correlation data

Filename : cor-WWWW-SSSSSS.dat
Version  : 6
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Header:
  0   INT16      file format version 
  2   INT16      header size [bytes]
  4   INT16      data record size [bytes]
  6   INT16      GPS week
  8   INT32      tow
 12   INT32      tic_count starting at beginning of week
 16   INT16      PRN of leading channel
 18   INT16      dithermode
 20   12*INT16   code phaseoffset 
 44   12*INT16   carrier phase offset 
 68   INT16      leading channel
 70   INT16      early / late
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Data:
  0   INT32      TIC counter
  4   INT32      I_prompt (20 ms avg.)
  8   INT32      I_dither (20 ms avg.)
 12   INT32      Q_prompt (20 ms avg.)
 16   INT32      Q_dither (20 ms avg.)
 20   INT16      channel number
 22   INT16      carrier cycles (low word)
 24   INT16      carrier cycles (high word)
 26   INT16      carrier fract. phase
 28   INT16      code phase (1/2 chips)
 30   INT16      code fract. phase (1/2048 chips)
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