Gps Performance - Enfora Enabler LPP G Integration Manual

8. GPS Performance

Specification
Maximum Update Rate
Accuracy
Acquisition Times
-130 dBm, 25 C
Sensitivity

CEP (50%):

CEP (95%):

TTFF (Time To First Fix (seconds)):

Cold Start:

Assisted Cold Start:

Reacquisition:
LPP0108IG001
Parameter/Conditions
-130 dBm, Autonomous CEP (50%)
-140 dBm, Autonomous CEP (50%)
-150 dBm, Autonomous CEP (50%)
-155 dBm, Autonomous CEP (50%)
-130 dBm, Autonomous CEP (95%)
-140 dBm, Autonomous CEP (95%)
-150 dBm, Autonomous CEP (95%)
-155 dBm, Autonomous CEP (95%)
Cold Start TTFF
Reacquisition
Tracking
Reacquisition
Cold Start
56
Min Typ
1.5
2.5
27
- 157.5
-157
-144
The radius of a horizontal circle centered at
the antenna's true position that contains
50% of the fixes.
The radius of a horizontal circle centered at
the antenna's true position that contains
95% of the fixes.
The number of seconds to provide a
position fix (latitude & longitude).
The GPS receiver does not have valid
almanac or time data.
The modem supplies the GPS receiver any
valid time, ephemeris, almanac, and
position data, that the modem might have
stored.
The GPS receiver has valid ephemeris,
almanac and time data.
Version - Preliminary – 06/20/08
Max Units
1 Hz
1 3 m
5 m
7 10 m
18 25 m
5 m
3 7 m
15 25 m
40 50 m
35 49 S
3 5 S
-160 dBm
dBm
dBm