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GPS
Product series
Table 4-9 contains the values for the following example:
$GPRMC,161229.487,A,3723.2475,N,12158.3416,W,0.13,309.62,120598, ,*10
Table 4-9 RMC Data Format
Name
Message ID
UTC Time
Status
Latitude
N/S Indicator
Longitude
E/W Indicator
Speed Over Ground
Course Over Ground
Date
Magnetic Variation
(1)
Checksum
<CR> <LF>
(1). SiRF Technology Inc. does not support magnetic declination. All "course over ground" data are geodetic WGS84 directions.
4.1.6 Course Over Ground and Ground Speed (VTG)
Table 4-10 contains the values for the following example:
$GPVTG,309.62,T, ,M,0.13,N,0.2,K*6E
Table 4-10 VTG Data Format
Name
Message ID
Course
Reference
Course
Reference
Speed
Units
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: 886-3-6687000 FAX:886-3-6687111 E-mail:info@holux.com.tw Website:www.holux.com.tw
Example
Units
$GPRMC
161229.487
A
3723.2475
N
12158.3416
W
0.13
knots
309.62
degrees True
120598
degrees E=east or W=west
*10
Example
Units
$GPVTG
309.62
degrees Measured heading
T
degrees Measured heading
M
0.13
knots
N
With HOLUX, You never lose the way!
Description
RMC protocol header
hhmmss.sss
A=data valid or V=data not valid
ddmm.mmmm
N=north or S=south
dddmm.mmmm
E=east or W=west
ddmmyy
End of message termination
Description
VTG protocol header
True
Magnetic
(1)
Measured horizontal speed
Knots
11
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