• Easting – Refers to the eastward-measured distance expressed in meters.
• Northing – Refers to the northward-measured distance expressed in meters.
NOTE:
Skipping each digit of easting and northing coordinates decreases the accuracy by the
factor of 10.
2.18.2
GPS Accuracy
The GPS Location Service accuracy depends on the GPS coverage and the selected accuracy mode.
In good GPS coverage (at least -137 dBm or in open sky), the location accuracy presents as follows:
• In high accuracy mode, the accuracy is:
- 5 m for 50% of location reports.
- 10 m for 95% of location reports.
• In power optimized or normal mode, the accuracy is:
- 20 m for 50% of location reports.
- 50 m for 95% of location reports.
NOTE:
The presented values depend on variety of factors, for example the view on the sky. To
optimize the GPS performance the radio should have the clearest possible view of the open
sky.
The use of the high capacity battery is recommended, especially when high accuracy mode is
used.
2.18.3
Location Report Backlog
The radio can record location track when it is out of service, when in DMO, or when in TXI mode.
The location reports generated during this time is stored, and all location report backlog recordings are
uploaded once the radio is back in service. Your radio can save up to maximum 180 location reports.
The location report backlog function differently when in different mode:
Location Backlog Recording in Trunked Mode Operation (TMO)
The radio starts recording location reports when radio is out of service in TMO Mode.
The radio resumes latest location reporting when TMO coverage is regained.
Location Backlog Recording in Direct Mode Operation (DMO)
The radio starts recording location reports in DMO Mode.
The radio resumes latest location reporting when it switches back to TMO mode.
NOTE:
This feature is only available when enabled by your service provider.
Location Backlog Recording in Transmit Inhibit Mode (TXI)
When the radio is in TXI mode, location reports are generated and recorded but not sent out.
Once the radio exits TXI mode and is within TMO coverage, the location reports are uploaded to
the server.
MN003465A01-AF
Chapter 2 : Services and Features
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