Teejet RX 400p Manual do Utilizador descarregar pdf (Página 127)

RX 400p

6-5 98-05044

Table 6-4 GLL Data Message Defined

Field Description

ddmm.mmmmm Latitude in degrees, minutes, and decimal minutes

s s = N or s = S, for North or South latitude

dddmm.mmmmm Longitude in degrees, minutes, and decimal minutes

s s = E or s = W, for East or West longitude

hhmmss.ss UTC time in hours, minutes, and seconds of GPS position

s Status, s = A = valid, s = V = invalid

*cc Checksum

<CR><LF> Carriage return and line feed

6.5.3 GSA Data Message

The GSA message contains GPS DOP and active satellite information. Only

satellites used in the position computation are present in this message. Null fields are

present when data is unavailable due to the number of satellites tracked. Table 6-5,

breaks down the GSA message into its components. This message has the following

format:

$GPGSA,a,b,cc,dd,ee,ff,gg,hh,ii,jj,kk,mm,nn,oo,p.p,q.q,r.r *cc<CR><LF>

Table 6-5 GSA Data Message Defined

Field Description

a Satellite acquisition mode M = manually forced to 2D or 3D, A = automatic swap

between 2D and 3D

b Position mode, 1 = fix not available, 2 = 2D fix, 3 = 3D fix

cc to oo Satellites used in the position solution, a null field occurs if a channel is unused

p.p Position Dilution of Precision (PDOP) = 1.0 to 9.9

q.q Horizontal Dilution of Precision (HDOP) = 1.0 to 9.9

r.r Vertical Dilution of Precision (VDOP) = 1.0 to 9.9

*cc Checksum

<CR><LF> Carriage return and line feed

1 2 ... 122 123 124 125 126 127 128 129 130 131 132 ... 150 151

Sem comentários

Teejet RX 400p Manual do Utilizador Página 127