BW-6222-High-Precision-MEMS-Intergrated Navigation System

Overview​

The ​BW-6222 is a compact, high-precision MEMS modular navigation system.. It integrates a ​self-developed high-precision MEMS IMU(Inertial Measurement Unit) and a dual-antenna GNSS module, utilizing ​multi-source Kalman filter fusion algorithms​ to deliver continuous, reliable high-accuracy positioning and navigation data in complex environments. Applications include satellite communications, drones, surveying and mapping, and stabilization platforms.

Key Features​

Multi-Constellation Support: Compatible with ​BDS, GPS, GLONASS, Galileo, and QZSS​ systems, including ​BeiDou-3 satellites​

Factory-Calibrated IMU:

Temperature and dynamic calibration for all IMU components.

Adaptive Alignment:

Static/dynamic alignment optimization for motion or stationary states.

Error Compensation:

System-level calibration for installation misalignment and wheel speed ratio errors.

Positioning Accuracy:

Horizontal position error ≤0.2% × D (distance traveled) during GNSS signal loss

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Interfaces:

RS-232/422, CAN/CAN-FD, PPS, and EVENT protocols for flexible integration.

​Power Supply:

​9–36 V DC​ wide-range input for industrial compatibility.

​Functional Specifications​

​Core Functions​

The system combines ​high-precision GNSS modules​ (centimeter-level positioning) with factory-calibrated MEMS IMU data (optionally augmented with odometer and steering inputs). Advanced algorithms (multi-source Kalman filtering, data source validation, and error compensation) ensure sustained accuracy in challenging environments (e.g., urban canyons, tunnels).

Key Performance Metrics​

Data Update Rates

- GNSS Solution 20 Hz -

- Navigation Solution 200 Hz -

- Raw GNSS Data 10 Hz -

- Raw IMU Data 200 Hz -

​Technical Advantages​

​Miniaturized Design: Compact dimensions optimized for UAVs, robotics, and portable systems

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​Dual GNSS Antenna Support: Enhanced positioning reliability with real-time kinematic (RTK) corrections.

​Military-Grade Robustness: Operates in ​​-40°C to +85°C​ and withstands shock/vibration (tested per GJB standards)

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​Applications​

​Satellite Communications: Stabilized platforms for ground terminals.

​Autonomous Vehicles: Sub-meter positioning in GNSS-denied zones.

​Surveying & Mapping: High-precision trajectory tracking.

​Industrial Machinery: Motion control for heavy equipment.