iXBlue GAPS - Page 225

GAPS - User Guide
Raw Transponder Position
This datagram contains the result of position computation made in real time.
Description Format Unit Observation
Header
Synchronization
Total Size
Datagram ID
Datagram release number
byte
byte
byte
byte
'$'
56
$87
$01
Transponder ID short
Age of position ulong µs Since emission
Time Emission
Seconds
Micro seconds
ulong
ulong
s
µs
Base 01/01/1970 (time_t)
Transponder
Position
Latitude
Longitude
Immersion
long
long
float meter
[-231..+231] ≡ [-180..+180]
[-231..+231] ≡ [-180..+180]
Not tide corrected
Covariance position
North / North
North /East
North / Depth
East / East
East / Depth
Depth / Depth
float
float
float
float
float
float
meter2
meter2
meter2
meter2
meter2
meter2
Checksum ushort
MU-GAPS-AN-005-H - November 2019 225