GT Series

Yuechung International Corp. (YIC)

8

URL: www.yic.com.tw

E-mail: service@yic.com.tw

Y

YI

IC

C

GSA-GNSS DOP and Active Satellites

Table 4 contains the values of the following example:

$GPGSA , A, 3, 07, 02, 26,27, 09, 04,15, , , , , , 1.8,1.0,1.5*33.

Table 4: GSA Data Format

Name

Example

Units

Description

Message ID

$GPGSA

GSA protocol header

Mode 1

A

See Table 4-1

Mode 2

3

See Table 4-2

Satellite Used

07

Sv on Channel 1

Satellite Used

02

Sv on Channel 2

…

…

…

Satellite Used

Sv on Channel 12

PDOP

1.8

Position Dilution of Precision

HDOP

1.0

Horizontal Dilution of Precision

VDOP

1.5

Vertical Dilution of Precision

Checksum

*33

<CR><LF>

End of message termination

Table 4-1: Mode 1

Value

Description

1

Fix not available

2

2D

3

3D

Table 4-2: Mode 2

Value

Description

M

Manual-forced to operate in 2D or 3D mode

A

Automatic-allowed to automatically switch 2D/3D