ashtech DG14, Reference Manual

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204 DG14 and DG16 Board & Sensor Reference Manual
$PASHR,MIS,<struct>
The response is in the format $PASHR,MIS,<struct>*hh. The output varies
depending on the RTCM message type. Table 7.11 outlines the $PASHR,MIS
response structure for RTCM Type 1 message.
Table 7.10. $PASHR,MIS Response Format for Message Type 1
Field
Length
(bytes)
Content
long RcvTime 4 Signal received time in milliseconds of week of GPS system time
or in milliseconds of week/day of GLONASS system time. This is
the time tag for all measurements and position data and is the
same as RcvTime in the PBN binary response message.
unsigned short
RcvTimeFrac 2 Fraction of RcvTime field in $PASHR,PBN message in
microseconds, ranging from 0 to 999us.
Receive Time (us) = RcvTime(ms) * 1000 + RcvTimeFrac
unsigned short
NumGpsSatsUsed 1 Number of GPS satellites used in position computation.
unsigned short
NumGloSatsUsed 1 Number of GLONASS satellites used in position computation.
Always 0.
unsigned short
NumGpsSatsTrkd 1 Number of GPS satellites tracked.
unsigned short
NumGloSatsTrkd 1 Number of GLONASS satellites tracked. Always 0.
unsigned short
PositionMode 2 Mode status for position fix computation:
Bit 15 Bit 14 (MSBit is 15, LSBit is 0)
• 0 0 — Altitude not held fixed.
• 0 1 —Last computed altitude held fixed.
• 1 0 —Externally supplied altitude held fixed.
Bit 13 Bit 12
• 0 0 —GLONASS time shift not held fixed.
• 0 1 —Last computed GLONASS time shift held fixed.
• 1 0 —Externally supplied GLONASS time shift held fixed.
Bit 11 Bit 10
• 0 0 —Position not computed.
• 0 1 —Raw; position not differentially corrected, ephemeris
data used to compute position fix.
• 1 0 —Differential Corrections applied.
• 1 1 —Almanac (not ephemeris) used to compute position fix.
Bits 9-0 reserved.
signed short
GeoidalSeparation 2 Geoidal separation in meters multiplied by 100.
unsigned short
HDOP 2 HDOP multiplied by 100.