ashtech DG14, Reference Manual

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222 DG14 and DG16 Board & Sensor Reference Manual
Table 4.22 outlines the response message.
Table 4.22. XYZ Data String
Field Bytes Content
long
[RcvTime] 4 Time at which the signal was received in milliseconds of the
week referenced to GPS system time, or milliseconds of the
day referenced to GLONASS system time. This time tag is
used as a reference for all time and position measurements.
short
[Total Satellites] 2 The total number of satellites appearing in the message.
short
[sv_1] 2 The PRN number of the satellite (1 - 56) being tracked on
channel 1 of the DG16.
double
[satx_1] 8 The x coordinate of the satellite being tracking on channel 1 of
the DG16; referenced to WGS-84.
double
[saty_1] 8 The y coordinate of the satellite being tracking on channel 1 of
the DG16; referenced to WGS-84.
double
[satz_1] 8 The z coordinate of the satellite being tracking on channel 1 of
the DG16; referenced to WGS-84.
double
[range_1] 8 The corrected pseudo-range of the satellite referenced in
[sv_1].
(These rows are repeated for each channel that is tracking a satellite. That is, if the DG16 is
tracking seven satellites, these rows are repeated seven times; if the DG16 is tracking twelve
satellites, these rows are repeated twelve times.)
short
[sv_n] 2 The PRN number of the satellite (1 - 56) being tracked on
channel
n of the DG16.
double
[satx_n] 8 The x coordinate of the satellite being tracking on channel n of
the DG16; referenced to WGS-84.
double
[saty_n] 8 The y coordinate of the satellite being tracking on channel n of
the DG16; referenced to WGS-84.
double
[satz_n] 8 The z coordinate of the satellite being tracking on channel n of
the DG16; referenced to WGS-84.
double
[range_n] 8 The corrected pseudo-range of the satellite referenced in
[sv_n].
checksum 2 The checksum is computed by breaking the structure into
unsigned shorts, adding them together, and taking the least
significant 16 bits of the result.
Total bytes: minimum = 42; maximum = 416