Novatel OM-20000041 用户手册

D

Logs summary

MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1

165

Number of SVs in view, 

PRN

 numbers, elevation, azimuth and 

SNR

 value. Four satellites maximum per message.

When required, additional satellite data sent in second or third message. Total number of messages being
transmitted and the current message being transmitted are indicated in the first two fields.

NOTE 1: Satellite information may require the transmission of multiple messages. The first field specifies the

total number of messages, minimum value 1. The second field identifies the order of this message
(message number), minimum value 1.

NOTE 2: A variable number of ’

PRN

-Elevation-Azimuth-

SNR

’ sets are allowed up to a maximum of four sets per

message. Null fields are not required for unused sets when less than four sets are transmitted. 

GPGSV

 logs will not output until time of first fix.

$GPGSV,3,1,09,03,51,140,42,16,02,056,40,17,78,080,42,21,25,234,00*72[CR][LF]
$GPGSV,3,2,09,22,19,260,00,23,59,226,00,26,45,084,39,27,07,017,39*78[CR][LF]
$GPGSV,3,3,09,28,29,311,44*42[CR][LF]

$GPGSV

# msg

msg #

# sats

prn

elev

azimuth

SNR

:

prn

elev

azimuth

SNR

*xx

[CR][LF]

1

$GPGSV

Log header

$GPGSV

2

# msg

Total number of messages, 1 to 3

x

3

3

msg #

Message number, 1 to 3

x

1

4

# sats

Total number of satellites in view

xx

09

5

prn

Satellite PRN number

xx

03

6

elev

Elevation, degrees, 90¡ maximum

xx

51

7

azimuth

Azimuth, degrees True, 000 to 359

xxx

140

8

SNR

SNR (C/N0) 00-99 dB, null when not tracking

xx

42

...
...
...

...
...
...

Next satellite PRN number, elev, azimuth, SNR,
...
Last satellite PRN number, elev, azimuth, SNr,

variable

*xx

Checksum

*hh

*72

variable

[CR][LF]

Sentence terminator

[CR][LF]