Vector Sensor Reference Manual 82
6.6.5 GSV Data Message
The GSV message contains GPS satellite information. Null fields occur where data is not available
due to the number of satellites tracked. Table 6-10 breaks down the GSV data message into its
components. This message has the following format.
$GPGSV,t,m,n,ii,ee,aaa,ss,…ii,ee,aaa,ss,*cc<CR><LF>
Table 6-10 GSV Data Message Defined
Field Description
t Total number of messages
m Message number, m = 1 to 3
n Total number of satellites in view
ii Satellite number
ee Elevation in degrees, ee = 0 to 90
aaa Azimuth (true) in degrees, aaa = 0 to 359
ss SNR (dB) + 30, ss = 0 to 99
*cc Checksum
<CR><LF> Carriage return and line feed
6.6.6 RMC Data Message
The RMC message contains recommended minimum specific GPS data. Table 6-11 breaks down
the RMC data message into its components. This message has the following format.
$GPRMC,hhmmss.ss,a,ddmm.mmm,n,dddmm.mmm,w,z.z,y.y,ddmmyy,d.d,v
*cc<CR><LF>
Table 6-11 RMC Data Message Defined
Field Description
hhmmss.ss UTC time in hours, minutes, seconds of the GPS position
a Status is valid if a = A, status is invalid if a = V
ddmm.mmmmm Latitude in degrees, minutes, and decimal minutes
n S = N or s = S, for North or South latitude
dddmm.mmmmm Longitude in degrees, minutes, and decimal minutes
w S = E or s = W, for East or West longitude
z.z Ground speed in knots
y.y Track made good, referenced to true north
ddmmyy UTC date of position fix in day, month, year
d.d Magnetic Variation in degrees
v Variation sense v = E = East, v = W = West
*cc Checksum
<CR><LF> Carriage return and line feed
To Next Page
Loading...
Need help?
General
