AQ-300 Operating Manual
AQ Max
Technology Inc.
6F-2, No.90, Sec.1, Chung-Hwa East Rd, Tainan, Taiwan
Fax: ++886 6 2380861 E-Mail:
Web:
www.aqmax.com
14
GNSS Satellites in View (GSV)
Table A-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 A-8 GSV Data Format
Name
Example Units
Description
Message ID
$GPGSV
GSV protocol header
Number of Messages
2
Range 1 to 3
Message Number
1
Range 1 to 3
Satellites in View
07
Range 1 to 12
Satellite ID
07
Channel 1 (Range 1 to 32)
Elevation
79
degrees Channel 1 (Maximum 90)
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 (Maximum 90)
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
<CR> <LF>
End of message termination
NOTE:
Items <4>,<5>,<6> and <7> repeat for each satellite in view to a maximum of
four (4) satellites per sentence. Additional satellites in view information must be sent
in subsequent sentences. These fields will be null if unused.
Recommended Minimum Specific GNSS Data (RMC)
Table A-9 contains the values for the following example:
$GPRMC,161229.487,A,3723.2475,N,12158.3416,W,0.13,309.62,120598, ,*10
Table A-9 RMC Data Format
Name
Example
Units
Description
Message ID
$GPRMC
RMC protocol header
UTC Time
161229.487
hhmmss.sss
Status
A
A=data valid or V=data not valid
Latitude
3723.2475
ddmm.mmmm
N/S Indicator
N
N=north or S=south
Longitude
12158.3416
dddmm.mmmm
E/W Indicator
W
E=east or W=west
Speed Over Ground
0.13
Knots
Course Over Ground
309.62
Degrees True
Date
120598
ddmmyy
Magnetic Variation (1)
Degrees E=east or W=west
Checksum
*10
<CR> <LF>
End of message termination
(1) SiRF Technology Inc. does not support magnetic declination. All “course over
ground” data are geodetic WGS84 directions.