DS-41BTM-1 Feb ’06

©2006 RF Solutions Ltd, www.rfsolutions.co.uk

Page 5

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GPS Receiver Module

GPS-41BTM

GSV - GPS SATELLITE IN VIEW

Number of satellites in view, PRN number, elevation angle, azimuth angle, and C/No. Only up to four satellite

details are transmitted per message. Additional satellite in view information is sent in subsequent GSV

messages.

Format:

$GPGSV,<1>,<2>,<3>,<4>,<5>,<6>,<7>,…,<4>,<5>,<6>,<7> *<8><CR><LF>

Example:

$GPGSV,2,1,08,26,50,016,40,09,50,173,39,21,43,316,38,17,41,144,42*7C<CR><LF>

$GPGSV,2,2,08,29,38,029,37,10,27,082,32,18,22,309,24,24,09,145,*7B<CR><LF>

Field

Example

Description

1

2

Total number of GSV messages to be transmitted

2

1

Number of current GSV message

3

08

Total number of satellites in view, 00 ~ 12

4

26

Satellite PRN number, GPS: 01 ~ 32, SBAS: 33 ~ 64 (33 = PRN120)

5

50

Satellite elevation number, 00 ~ 90 degrees

6

016

Satellite azimuth angle, 000 ~ 359 degrees

7

40

C/No, 00 ~ 99 dB

Null when not tracking

8

7C

Checksum

RMC - RECOMMANDED MINIMUM SPECIFIC GPS/TRANSIT DATA

Time, date, position, course and speed data.

Format:

$GPRMC,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,<10>,<11>,<12>*<13><CR><LF>

Example:

$GPRMC,104549.04,A,2447.2038,N,12100.4990,E,016.0,221.0,250304,003.3,W,A*22<CR><LF>

Field

Example

Description

1

104549.04

UTC time in hhmmss.ss format, 000000.00 ~ 235959.99

2

A

Status, ‘V’ = navigation receiver warning, ‘A’ = valid position

3

2447.2038

Latitude in dddmm.mmmm format

Leading zeros transmitted

4

N

Latitude hemisphere indicator, ‘N’ = North, ‘S’ = South

5

12100.4990

Longitude in dddmm.mmmm format

Leading zeros transmitted

6

E

Longitude hemisphere indicator, 'E' = East, 'W' = West

7

016.0

Speed over ground, 000.0 ~ 999.9 knots

8

221.0

Course over ground, 000.0 ~ 359.9 degrees

9

250304

UTC date of position fix, ddmmyy format

10

003.3

Magnetic variation, 000.0 ~ 180.0 degrees

11

W

Magnetic variation direction, ‘E’ = East, ‘W’ = West

12

A

Mode indicator

‘N’ = Data invalid

‘A’ = Autonomous

‘D’ = Differential

‘E’ = Estimated

13

22

Checksum