Tallysman TW5210, Руководство пользователя

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TW5210 User Manual rev 1_2
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©2011 Tallysman Wireless, Inc. Confidential
8.1.3 GSA
The GSA message provides overall satellite data
$GPGSA,a,x,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx.x,xx.x,xx.x*hh
GSA = GPS receiver operating mode, SVs used for navigation, and DOP values.
$GPGSA,A,1,,,,,,,,,,,,,99.0,99.0,99.0*00
The following fields are listed in the order shown in the comma-separated sentence.
1 = Mode:
M=Manual, forced to operate in 2D or 3D
A=Automatic, 3D/2D
2 = Mode:
1=Fix not available
2=2D
3=3D
3-14 = Ids of SVs used in position fix (null for unused fields)
15 = PDOP
16 = HDOP
17 = VDOP
18 = Checksum
8.1.4 GSV
The GSV message provides detailed satellite data.
$GPGSV,x,x,xx,xx,xx,xxx,xx,…………….xx,xx,xxx,xx*hh
GS = Number of SVs in view, PRN numbers, elevation, azimuth & SNR values.
$GPGSV,3,1,11,03,12,174,,06,20,159,,13,14,315,,14,02,139,*7C
1 = Total number of messages of this type in this cycle
2 = Message number
3 = Total number of SVs in view
4 = SV PRN number