Novatel OM-20000041 用户手册

D

Logs summary

MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1

167

Time, date, position, track made good and speed data provided by the 

GPS

 navigation receiver.  

RMC

 and 

RMB

 are

the recommended minimum navigation data to be provided by a 

GPS

 receiver. This log will output all null data

fields until the GPSCard has achieved first fix.

$GPRMC,220216.50,A,5106.7187663,N,11402.3581636,W,0.3886308,130.632,150792,
0.000,E*4B[CR][LF]

1

Easterly variation (E) subtracts from True course

 Westerly variation (W) adds to True course

2

 N

ote that this field is the actual magnetic variation East or West and is the inverse sign of the value entered into

the 

 command.  See 

 in Appendix C, Page 106 for more information.

$GPRMC

utc

pos status

lat

lat dir

lon

lon dir

speed Kn

track true

date

mag var

var dir

*xx

[CR][LF]

1

$GPRMC

Log header

$GPRMC

2

utc

UTC of position

hhmmss.ss

220216.50

3

pos status

Position status: A = data valid

V = data invalid

A

A

4

lat

Latitude (DDmm.mm)

llll.ll

5106.7187663

5

lat dir

Latitude direction (N = North, S = South)

a

N

6

lon

Longitude (DDDmm.mm)

yyyyy.yy

11402.3581636

7

lon dir

Longitude direction (E = East, W = West)

a

W

8

speed Kn

Speed over ground, knots

x.x

0.3886308

9

track true

Track made good, degrees True

x.x

130.632

10

date

Date: dd/mm/yy

xxxxxx

150792

11

mag var

Magnetic variation, degrees

 

2

x.x

0.000

12

var dir

Magnetic variation direction E/W

1

a

E

13

*xx

Checksum

*hh

*4B

14

[CR][LF]

Sentence terminator

[CR][LF]