Technical Parameters Of Gnss - Advantech SmartFlex SR305 User Manual

7.5 Technical parameters of GNSS

GPS specifications
Antenna
Protocols
Frequency GPS
Frequency GLONASS
Tracking Sensitivity
(Open sky)
Acquisition Sensitivity
(Open sky)
Cold Start Sensitivity
Acquisition time (TTFF)
Tracking sensitivity is the lowest GNSS 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 GNSS signal level for which the device can still detect
an in-view satellite 50 % of the time.
50 Ohms – active
NMEA 0183 v3.0
1575.42 MHz Typical
1597.551 MHz Min.; 1605.886 MHz Max.
Active antenna or LNA: -159 dBm
Passive antenna: -156 dBm
Active antenna or LNA: -149 dBm
Passive antenna: -145 dBm
-145 dBm
Warm start: 29 s Max.
Cold start: 32 s Max.
Table 33: Technical parameters of GNSS
48
SmartFlex SR305