Data Sheet

LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
 886-2-8698-3699
www.locosystech.com
Page 6/20
© 2006 LOCOSYS Technology Inc.
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 GSA---GNSS DOP and Active Satellites
Table 5.1-5 contains the values for the following example:
$GPGSA,A,3,24,07,17,11,28,08,20,04,,,,,2.0,1.1,1.7*35
Table 5.1-5 GSA Data Format
Name Example Units Description
Message ID $GPGSA GSA protocol header
Mode 1 A See Table 5.1-6
Mode 2 3 See Table 5.1-7
ID of satellite used 24 Sv on Channel 1
ID of satellite used 07 Sv on Channel 2
…. ….
ID of satellite used Sv on Channel 12
PDOP 2.0 Position Dilution of Precision
HDOP 1.1 Horizontal Dilution of Precision
VDOP 1.7 Vertical Dilution of Precision
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Table 5.1-6 Mode 1
Value Description
M
Manual- forced to operate in 2D or 3D mode
A
Automatic-allowed to automatically switch 2D/3D
Table 5.1-7 Mode 2
Value Description
1 Fix not available
2 2D
3 3D
 GSV---GNSS Satellites in View
Table 5.1-8 contains the values for the following example:
$GPGSV,3,1,12,28,81,285,42,24,67,302,46,31,54,354,,20,51,077,46*73
$GPGSV,3,2,12,17,41,328,45,07,32,315,45,04,31,250,40,11,25,046,41*75
$GPGSV,3,3,12,08,22,214,38,27,08,190,16,19,05,092,33,23,04,127,*7B
Table 5.1-8 GSV Data Format
Name Example Units Description