Data 89 (GSV)

The information of GSV (GNSS Satellites in View).

Each SV occupies 6 bytes, including ‘GNSS ID’, ‘SV ID’, ‘Signal Strength’, ‘Elevation’ and ‘Azimuth’.

The frame format of the Data 89 unit is as follows:

For example (Total 21 bytes):
59 13 03 03 02 24 11 00 37 03 05 30 45 01 02 03 06 28 18 00 9A

Parts

Fields

Length (Byte)

Range/Format

Default

ID

Data ID

1

59H (89)

59H (89)

Length

Data Length

1 or 2

00H or 01H-7FH or 8085H-8181H

Content

Number

1

00H-15H or 16H-40H

The first SV

GNSS ID

1

00H-06H

SV ID

1

00H-FFH

Signal Strength

1

00H-63H (dBHz)

Elevation

1

00H-5AH (degrees)

Azimuth

2

00000H-0167H (degrees)

…

  • Number

    Indicates how many satellites the following data comes from. If the value of this field is 00H, no other data is included (such as ‘GNSS ID’, ‘SV ID’, ‘Signal Strength’, ‘Elevation’, ‘Azimuth’, etc.).

  • GNSS ID

    GNSS ID indicates the GNSS type.

    • 00H - GPS.

    • 01H - SBAS.

    • 02H - Galileo.

    • 03H - BeiDou.

    • 05H - QZSS.

    • 06H - GLONASS.

  • SV ID

    Satellite Vehicle ID.

  • Signal Strength

    Signal strength (C/N0). In particular, FFH means invalid value.

  • Elevation

    Elevation. In particular, FFH means invalid value.

  • Azimuth

    Azimuth. In particular, FFFFH means invalid value.