1,645
edits
Changes
Iridium Edge Communication Protocol (view source)
Revision as of 12:40, 25 April 2023
, 12:40, 25 April 2023→SDB record structure
'''''Latitude''''' - Is calculated in the same way as longitude but since latitude maximum value is two times smaller than longitude it can produce a bit more accurate data. The coefficient for latitude is 93206,75. This coefficient is got in the following way: 16777215(maximum 3 bytes value) divided by 180 (maximum latitude value then 90 is added). This calculation is used to fit negative and positive values to 3 bytes width variable.
'''''Latitude''''' - Is calculated in the same way as longitude but since latitude maximum value is two times smaller than longitude it can produce a bit more accurate data. The coefficient for latitude is 93206,75. This coefficient is got in the following way: 16777215(maximum 3 bytes value) divided by 180 (maximum latitude value then 90 is added). This calculation is used to fit negative and positive values to 3 bytes width variable.
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'''''SBD AVL ID and flags''''' – Custom ID that will indicate what caused the record to be generated (final ID will (as only periodic records are generated, ID is not used)).
'''Din/Dout info''' - Displays configured IO elements in parameter id 99422 (only din/dout). If IO is not set, it will send be replaced by 0.
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'''Reserved''' - Not used anywhere.
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'''Speed''' – Indicates the speed (from GNSS) of the vehicle if configured. If not (or in case of no gps) – will display 255.
'''''SBD AVL ID and flags''''' – Custom ID that will indicate what caused the record to be generated
This byte is divided in two parts of four bits, as shown in table below:
This byte is divided in two parts of four bits, as shown in table below:
