NavCom LAND-PAK Rev.N - Manual (Page 185)

Technical Reference Manual Rev. N
Blk = All; Blu = IOP w/Internal Radio ; Red = IOP & LBM ; Grn = Engine only
183
$PNCTMDE
This output message via the NMEA port is a NavCom proprietary NMEA type message. It
conforms to the header, checksum, and electrical characteristics of a standard NMEA string, but
is not recognized by the NMEA governing body as an officially sanctioned message.
$PNCTMDE is available only for software version 5.1.3 and later.
Output Format: $PNCTMDE,time,prn,meastype,wteststat,miner,posMDE*checksum
Field# Field Name Description
F1 time Current UTC Time
F2 prn GPS Satellite ID Number 1
F3 meastype Range from 0-6
2
F4 wteststat The Test Statistic Computed in Eq. 20
F5 minerr MDE for a Given Type I and Type II Errors in Meters
3
F6,F7,F8 posMDE One-sigma Estimated Error in Meter (Lat, Lon, Height)
F9 Checksum
Example: $PNCTMDE,202650.00,15,0,0.006,11.226,-3.819,-1.054,5.514*44
1 Refers to Satellite ID numbers. To avoid possible confusion caused by repetition
of satellite ID numbers when using multiple satellite systems, the following
convention has been adopted:
GPS satellites are identified by their PRN numbers, which range from 1 to 32.
The WAAS system has reserved numbers 33 – 64 to identify its satellites.
2 Refer to measurement type.
0: CA pseudo range
1: P1 pseudo range
2: L1 carrier-phase
3: P2 pseudo range
4: L2 carrier-phase
5: P1/P2 refraction corrected code
6: L1/ L2 refraction corrected carrier-phase
3
Refer to type I error (5% by default) and type II error (20%, i.e. power of test
80%)