SkyTraq PX1120S - Page 13

13
SkyTraq Technology, Inc. Preliminary Draft www.skytraq.com.tw
GLL – Latitude/Longitude
Latitude and longitude of current position, time, and status.
Structure:
$GNGLL,ddmm.mmmmm,a,dddmm.mmmmm,a,hhmmss.sss,A,a*hh<CR><LF>
1 2 3 4 5 6 7 8
Example:
$GNGLL,2447.09094,N, 12100.52369,E, 052315.000,A,D*4A<CR><LF>
Field
Name
Example
Description
1
Latitude
2447.09094
Latitude in ddmm.mmmmm format
Leading zeros transmitted
2
N/S Indicator
N
Latitude hemisphere indicator
‘N’ = North
‘S’ = South
3
Longitude
12100.52369
Longitude in dddmm.mmmmm format
Leading zeros transmitted
4
E/W Indicator
E
Longitude hemisphere indicator
‘E’ = East
‘W’ = West
5
UTC Time
052315.000
UTC time in hhmmss.sss format (000000.000 ~ 235959.999)
6
Status
A
Status, ‘A’ = Data valid, ‘V’ = Data not valid
7
Mode Indicator
D
Mode indicator
‘A’ = Autonomous mode
‘D’ = Differential mode
‘E’ = Estimated (dead reckoning) mode
‘M’ = Manual input mode
‘S’ = Simulator mode
‘N’ = Data not valid
8
Checksum
4A