Single Frequency High Precision Direction Finding And Positioning Board
It is a cost-effective single-frequency GNSS direction finding and positioning card. It adopts dual antenna port design, supports BDS B1, GPS L1, GLONASS G1, Galileo E1 signal reception, onboard high-precision gyroscope and tilt sensor can output heading, pitch and roll data. In addition, the product also supports DGNSS, RTK positioning and “China Precision”. A single machine can achieve decimeter-level positioning accuracy, which can meet the positioning requirements of different accuracy.
Features
Support BDS B1, GPS L1, GLONASS G1, Galileo E1
Support RTK positioning
Support “Chinese precision”, single machine to achieve decimeter level positioning
Fast RTK convergence and recapture time, excellent carrier smoothing performance
0.3m available relief precision, strong multipath effects and interference suppression technology
The unique onboard high precision gyro provides continuous course accuracy of <1° in 3 minutes when GNSS satellite loses lock
Tilt sensor can provide both pitch and roll data
Specifications
| GNSS Performance Index | |||
| Receiving satellite signals | BDS B1, GPS L1, GLONASS G1, Galileo E1, L-Band | ||
| Pass Number | 424 | ||
| SBAS Tracking | 2 channels, parallel tracing | ||
| Data updating rate | 10Hz Standard，50Hz authorizable |
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| Positioning accuracy | horizontal(RMS) | elevation(RMS) | |
| RTK | 10mm+1ppm | 20mm+2ppm | |
| SBAS | 0.3m | 0.6m | |
| single-point | 1.2m | 2.5m | |
| China precision | 0.25m | / | |
| Direction finding precision | 0.30°(rms,@ 0.5 m the antenna spacing) 0.15°(rms,@ 1.0 m the antenna spacing) 0.08°(rms,@ 2.0 m the antenna spacing) 0.04°(rms,@ 5.0 m the antenna spacing) |
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| Pitch accuracy | 0.3°(rms,@ 1.0 m The antenna spacing) | ||
| Roll accuracy | 1°(rms) | ||
| Fluctuation accuracy | 30cm(DGPS), 5cm(RTK) | ||
| Timing accuracy(1PPS) | 20ns | ||
| Cold start | 60s（typical value） | ||
| Warm start | 5s（typical value） | ||
| Heading to lock | 10s（typical value） | ||
| L-Band performance | |
| Pass Number | unipath |
| Frequency range | 1525 to 1560MHz |
| Communication indicators | |
| Data interface | serial port：4pcs Full duplex serial port（3.3V CMOS），3pcs main serial ports，1pc beacon special differential serial port， USB：1pc USB Device，1pc USB Host |
| Baud rate | 4800 – 460800 bps |
| Difference scheme | RTCM SC-104, RTCM v2(DGPS), RTCM3.0, RTCM3 v3(RTK), CMR, CMR+ |
| Data format | NMEA0183, Crescent binary |
| Timing output | 1PPS, COMS, Active-high ,Rising edge synchronization, 10kΩ, 10pF load |
| Event ID input | COMS, Active-low，Falling edge synchronization,, 10kΩ, 10pF load |
| Electrical Specifications | |
| Working voltage | 3.3VDC ±5% |
| Power consumption | <2.1W rated (double frequency GPS+ GLONASS ) |
| Working current | <0.63A Rated (double frequency GPS+ GLONASS ) |
| Antenna power supply | 15VDC max |
| Environmental index | |
| Working Temperature | -40°C~+85°C |
| Storage Temperature | -40°C~+85°C |
| Mechanical indicators | |
| Size | 10.9L x 7.1W x 5H(cm) |
| Weight | 50g |
| Power/data connector | 34pin, 1.27mm spacing |
| Antenna connector | MCX female head, straight |
| Accessory equipment | |
| Gyroscope | It provides heading smoothing and fast directional recapture. When GNSS signals are lost, it provides an auxiliary heading of up to 3 minutes with an accuracy better than 1°/min |
| Tilt angle sensor | Provide tilt and roll data to assist fast directional and directional recapture |
Application Techniques
1.Some Questions about GNSS Antenna
2.The Difference and Connection between GPS and GNSS
3.High-precision GNSS receiver design
4.Scientific Farming, With The Help of GNSS
5.The Working Principle of GNSS
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