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USGlobalsat ER-506 User Manual

Page 9

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ER-506
High Performance GPS Module

- 10 -

GSV - GNSS Satellites in View

Table B-8 contains the values for the following example:

$GPGSV,2,1,07,07,79,048,42,02,51,062,43,26,36,256,42,27,27,138,42*71

$GPGSV,2,2,07,09,23,313,42,04,19,159,41,15,12,041,42*41
Table B-8 GSV Data Format

Name

Example

Units

Description

Message ID

$GPGSV

GSV protocol header

Number of Messages

1

2

Range 1 to 3

Message Number

1

1

Range 1 to 3

Satellites in View

1

07

Satellite ID

07

Channel 1(Range 1 to 32)

Elevation

79

degrees Channel 1(Maximum90)

Azimuth

048

degrees Channel 1(True, Range 0 to 359)

SNR(C/No)

42

dBHz

Range 0 to 99,null when not tracking

…….

…….

Satellite ID

27

Channel 4 (Range 1 to 32)

Elevation

27

Degrees Channel 4(Maximum90)

Azimuth

138

Degrees Channel 4(True, Range 0 to 359)

SNR(C/No)

42

dBHz

Range 0 to 99,null when not tracking

Checksum

*71

End of message termination

1. Depending on the number of satellites tracked, multiple messages of GSV data may be

required. In some software versions, the maximum number of satellites reported as visible is

limited to 12, even though more may be visible.