ashtech DG14, Reference Manual

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266 DG14 and DG16 Board & Sensor Reference Manual
If there is no valid position, POS provides: number of satellites, time, DOPs,
firmware version ID. All other fields are null.
If there are not enough satellites to compute DOP, then the DOP field is null.
Typical Response:
$PASHR,POS,0,06,183805:00,3722.36221,N, 12159.82742, W,
+00016.06,????,179.22,021.21,+003.96+34,06.1,04.2,03.2,01.4,GA0
0*cc
Table 8.40 outlines a typical POS response message.
f2 Site ID 4 character string
f3 True track/true course over ground in degrees (000.00
to 359.99 degrees) 0 to 359.9
f4 Speed over ground in knots 0 to 999.9
f5 Vertical velocity in meters per second ± 999.9
f6 PDOP—position dilution of precision 0 to 99.9
f7 HDOP—horizontal dilution of precision 0 to 99.9
f8 VDOP—vertical dilution of precision 0 to 99.9
f9 TDOP—time dilution of precision 0 to 99.9
s1 Firmware version ID 4 character string
*hh checksum 2-character hex
Table 8.40. Typical POS Response Message
Item Description
$PASHR,POS Header
0 Position is autonomous
06 Number of satellites used in position computation
183805.00 Time of position computation
3722.36221 Latitude
N North
12159.82742 Longitude
W West
+00016.06 Altitude in meters
Table 8.39. POS Response Structure (Continued)
Field Description Range