Bivias v2
7.4
Technical parameters of GPS
GPS specifications
Antenna
SMA 50
Ω
– active
Protocols
NMEA 0183 v3.0
Frequency
1575.42 MHz
Sensitivity
Tracking: -161 dBm
∗
Acquisition (Assisted): -158 dBm
∗∗
Acquisition (Standalone): -145 dBm
∗∗
Acquisition time
Hot start: 1 s
Warm start: 29 s
Cold start: 32 s
Accuracy
Horizontal: < 2m (50 %); < 5 m (90 %)
Altitude: < 4 m (50 %); < 8 m (90 %)
Velocity: < 0.2 mps
Table 18: Technical parameters of GPS
∗
Tracking sensitivity is the lowest GPS signal level for which the device can still detect an
in-view satellite 98 % of the time when in sequential tracking mode.
∗∗
Acquisition sensitivity is the lowest GPS signal level for which the device can still detect an
in-view satellite 50 % of the time.
7.5
Other Technical Parameters
Other technical parameters
CPU
32b ARM microprocessor
0.25 DMIPS per MHz
Flash memory
16 MB DDR SDRAM
RAM
64 MB
M-RAM
128 kB
Table 19: Other technical parameters
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