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AG-STAR User Manual Rev 2 42
Appendix A Technical Specifications
A.1 AG-STAR Receiver Performance
PERFORMANCE
Channel Configuration
14 GPS L1
12 GPS L1 + 2 SBAS
a
10 GPS L1 + 4 GLONASS L1
8 GPS L1 + 6 GLONASS L1
8 GPS L1 + 4 GLONASS L1 + 2 SBAS
a
10 GPS L1 + 2 GLONASS L1 + 2 SBAS
a
7 GPS L1 + 7 GLONASS L1
14 GLO L1
a. Satellite Based Augmentation Systems (SBAS) include WAAS (North America), EGNOS (Europe) and MSAS (Japan).
Horizontal Position Accuracy (RMS)
b
b. Typical values. Performance specifications subject to GPS system characteristics, US DOD operational
degradation, ionospheric and tropospheric conditions, satellite geometry, baseline length, multipath effects and the
presence of intentional or unintentional interference sources.
Export licensing restricts operation to a maximum velocity of 515 metres per second.
Absolute
Autonomous 1.5 m
SBAS
a
0.9 m
DGPS 0.5 m
Measurement Precision (RMS)
GPS GLONASS
L1 C/A Code 5 cm 35 cm
L1 Carrier Phase 0.6 mm 1.5 mm
Maximum Data Rate
Measurements 10 Hz
Position 10 Hz
Time to First Fix
Cold Start
c
85 s
Hot Start
d
55 s
c. Typical value. No almanac or ephemerides and no approximate position or time.
d. Typical value. Almanac and recent ephemerides saved and approximate time entered. For more information, refer to
the “SETAPPROXTIME” command in the OEMStar Firmware Reference Manual
.
Signal Reacquisition
L1 <1.0 s (typical)
Time Accuracy (RMS)
GPS GLONASS
20 ns 40 ns
Velocity Accuracy
b
(RMS)
0.05 m/s