Rikaline GPS-22 User Manual page 10

Name
Message ID
Number of Messages
Message Number
Satellites in View
Satellite ID
Elevation
Azimuth
SNR (C/No)
....
Satellite ID
Elevation
Azimuth
SNR (C/No)
Checksum
<CR> <LF>
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.
4.1.5 Recommended Minimum Specific GNSS Data (RMC)
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
Checksum
<CR> <LF>
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
Speed
Units
Rikaline International Corp.
Tel: ++886 2 8973-1899 Fax: ++886 2 8973-1896 E-Mail: info@rikaline.com.tw web: www.rikaline.com.tw
GPS-22 Operating Manual
Example Units
$GPGSV
2
1
07
07
79 degrees Channel 1 (Maximum 90)
048 degrees Channel 1 (True, Range 0 to 359)
42 dBHz
....
27
27 degrees Channel 4 (Maximum 90)
138 degrees Channel 4 (True, Range 0 to 359)
42 dBHz
*71
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
0.2 Km/hr
K
14F
, 171, ChengGong Rd., Sanchong City, Taipei 241, Taiwan, R. O.C
Description
GSV protocol header
Range 1 to 3
Range 1 to 3
Range 1 to 12
Channel 1 (Range 1 to 32)
Range 0 to 99, null when not tracking
Channel 4 (Range 1 to 32)
Range 0 to 99, null when not tracking
End of message termination
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
Measured horizontal speed
Kilometers per hour
Specifications subject to change without prior notice
Rikaline