GLOBALSTAR PROPRIETARY AND CONFIDENTIAL INFORMATION
Use or disclosure of data contained on this sheet is subject to the restrictions in the Distribution Statements on the title page of this
document.
06/18/20
Subject to Change without Notice
P a g e | 38
Where:
•
Period :
0x000A (10 minute intervals)
•
Payload Byte 0:
0xAA
•
Payload Byte 7:
0xBB
•
Payload Byte 8:
0xCC
Initiate proprietary track response
Byte
Bits
Parameter
Description
0
0 - 7
Leader
Always a value of 0xAA.
1
0 - 7
Length
0x5
2
0 - 7
Command Code.
0x30 = ACK or 0xFF = NAK
3 -4
0 - 15
CRC
Example Response:
AA 05 30 5A F5
Example Payload:
0xAA
2B4856
BFF032
BBCC
Where:
2B4856
is the 24-bit latitude
30.433051586151 (North)
BFF032
is the 24-bit longitude -90.086817741394 (West)
See section 4.6: “24 bit location format” for documentation of the
encoding/decoding of Globalstar on-air location data.
4.2.2.15
“Proprietary Motion Activated Dock Mode Track” command
This command is essentially the same as the “Proprietary Motion Activated Track” command above, except that in “Dock
Mode”, the movement detected
by the accelerometer is confirmed by motion or lack of motion being indicated by
sequential GPS fixes. The idea is that this mode prevents a “boat at dock” from falsely entering a state of motion and
resuming track due to the boat bobbing in the waves while docked.