The portable differential ground station system independently developed by Beidou Nebula company comprises ground station and airborne radio, ground station can carry out comprehensive calculation to obtain information such as position, speed, time, etc., is connected with transmitting station by built-in serial port, utilizes transmitting station to send differential data of base station to airborne radio, airborne radio and airborne satellite navigation board complete differential data transmission through serial port, utilizes the observation and measurement information that differential ground station transmits, carries out differential decomposition calculation, realizes high-precision positioning solution. It is mainly used in the take-off and landing guidance of UAVs in the field.
Indicator parameters:
| Passage | 555 Passage |
| Constellation | BDS/GPS/GLONASS/Galileo/Qzss |
| Frequency | BDS:B11/B2I/B31/B1C/B2a/B2b GPS: L1C/A/L2P(Y)/L2C/L5GLONASS: L1/L2Galileo:E1/E5a/E5b QZSS:L1/L2/L5 |
| Positioning accuracy
| Single Point Positioning (RMS) Plane: 1.5m Elevation: 2.5m DGPS(RMS) Plane: 1.5m Elevation: 2.5m RTK(RMS) Plane: 1.5m Elevation: 2.5m |
| Time accuracy（RMS） | 20ns |
| Velocity Accuracy (RMS)
| 0.03 m/s |
| Time to first fix | Cold start< 40s, Warm start< 20s |
| Radio frequency
| 450~470MHZ |
| Initialization time
| <5s（Typical) |
| Initialization reliability | >99.9% |
| Data update rate | 5Hz positioning, orientation, 5Hz original observation
|
| Differential data
| RTCM3.X |
| Data format
| NMEA-0183 |
| Physical
| |
| Dimensions
| 300mmX200mmX100mm |
| Weight
| <30kg |
| Supply Voltage
| 180~240VACA |
| Power consumption
| <150W |
| Environmental
| |
| Humidity
| 95% non-condensing
|
| Vibration
| GJB150.16A-2009，MIL-STD-810 |
| Shock | GJB150.18A-2009，MIL-STD-810 |
Operating Temperature | -40'C~+85"C |
Storage Temperature | -55℃~+90"C |
| Connector
| |
| Data interface | 17Pin |
Antenna interface | 2xTNC |
| Communication interface
| 2xR52321xRS422 1x1PPS |
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