Overview
The Beitian BT-B201E is a precision GNSS+INS integrated navigation module designed for centimeter-level positioning and high-reliability navigation output in demanding environments. It integrates a multi-GNSS receiver and an IMU, combining multi-band RTK and integrated navigation technology for applications such as ground robotics, smart driving, crowd-sourced maps, smart lawn mowers, precision agriculture, machine control, and unmanned vehicles (UAV).
Key Features
- Multi-GNSS support: BDS, GPS, GALILEO, GLONASS, QZSS
- RTK combination algorithm
- RTK fast initialization, typically better than 5 s
- Supports NTRIP RTCM3.x foundation enhancement data
- Long-term baseline RTK solution technology (40 km+)
- Small size, good I/O compatibility, low power consumption
- 54-pin LGA package; module size: 17 mm * 22 mm
Specifications
GNSS performance
| Tracking frequency |
GPS/QZSS: L1, L5; BEIDOU: B1I, B2a; GALILEO: E1, E5a; GLONASS: G1 |
| Horizontal accuracy |
≤ 8 mm + 1 ppm |
| Start time |
Cold start ≤ 27 s; Hot start 2 s |
| Fixed solution convergence time |
≤ 10 s |
| Path-to-path precision |
Sub-level |
| Antenna |
Single antenna |
| Baseline length |
40 km fixed solution |
| Capture sensitivity |
-148 dBm |
| Tracking sensitivity |
-165 dBm |
| Carrier phase observation accuracy |
< 0.01 cycle |
| Navigation output frequency |
Up to 10 Hz |
IMU performance
| Gyro range |
± 1000 deg/s |
| Gyro bias stability |
± 4.5 deg/h |
| Gyro random walk of length |
0.75 deg/√h |
| Accelerometer range |
± 16 g |
| Accelerometer bias stability |
± 0.25 mg |
| Accelerometer speed random walk |
0.3 m/s/√h |
| Roll and pitch accuracy |
≤ 0.02° (1σ) |
| Heading accuracy |
≤ 0.2° (1σ) |
| Inertial estimation accuracy |
≤ 1% * D (1σ, load) |
| Data sampling rate |
50 Hz |
Interfaces, protocol, and package
| Hardware interface |
2 UART; 1 PPS |
| Protocol |
NMEA-0183; FMI; RTCM |
| Package |
LGA |
| Pin count |
54-pin |
| Module size |
17 mm * 22 mm |
Power supply and operating environment
| Working voltage |
3.3 v |
| Antenna voltage |
3.3 v |
| PPS |
1.8 V (rising edge) |
| Power consumption |
0.5 W |
| Working environment |
-40°C to 85°C |
| Storage temperature |
-40°C to 90°C |
| Humidity |
95% non-condensing |
Applications
- Ground robotics
- Smart driving
- Crowd-sourced maps
- Smart lawn mowers
- Precision agriculture
- Machine control
- Unmanned vehicles (UAV)
For integration guidance and pre-sales compatibility questions, contact support at https://rcdrone.top/ or email support@rcdrone.top.
Details


Key specifications at a glance, including multi-band GNSS tracking, RTK accuracy, IMU performance, interfaces, and 17 × 22 mm LGA package details.