NavCom Sapphire Rev.J - Manual (Page 334)

Sapphire Technical Reference Manual Rev. J
334
2.77 NMEAPNCTGST (ASCII)
SF-3050 Sapphire SF-3040
Supported Output Rate: OFF ONCE OnChange OnTime
OnChange = when slow nav is completed (1Hz)
OnTime = minimum 1Hz
This message satisfies the UKOOA compliance requirements by starting with the standard
NMEA GST message and scaling all error statistics by 1.96, and by adding a value for fisher
test.
Table 167: PNCTGST Message Output Format
Output Format: $PNCTGST,time,rms,majoraxis,minoraxis,orientation,laterr,lonerr,alterr,fisher*checksum
Field# Field Name Description
F1 time
UTC time of the GGA or GNS fix associated with this sentence,
represented as hours, minutes, seconds (hhmmss.ss) (000000.00 to
235959.99)
F2 rms
RMS value of the standard deviation of the range inputs to the
navigation process. Range inputs include pseudoranges and DGNSS
corrections.
F3 Majoraxis* Standard deviation of semi-major axis of error ellipse in meters
F4 Minoraxis* Standard deviation of semi-minor axis of error ellipse in meters
F5 Orientation Orientation of semi-major axis of error ellipse in degrees from true north
F6 Laterr* Standard deviation of latitude error in meters
F7 Lonerr* Standard deviation of longitude error in meters
F8 Alterr* Standard deviation of altitude error in meters
F9 Fisher Fisher Test Result
F10 *CRC Checksum

* Indicates the result is scaled by 1.96 This output stream reports pseudo-range noise
statistic information, and is in compliance with NMEA 0183 Standards version 3.0.
Examples: $GNGST,192518.00,0.3762,0.1054,0.0953,074.8583,0.0960,0.1048,0.2168*7A
$PNCTGST,193028.00,0.2993,0.1722,0.1448,084.7181,0.1451,0.1720,0.3391,1*65