The X28 Positioning & Heading Receivers is a next-gen high-precision GNSS positioning board supporting dual-mode operation for both mobile and base stations. Integrated with GPRS, Bluetooth/WIFI, LORA, CAN, and multiple serial ports, it offers centimeter-level positioning with AGPS and RTK differential enhancement. Its modular design supports customizable functions, dual power management (external power and battery), temperature monitoring, remote upgrades, and blind spot data recovery. Ideal for applications in autonomous driving, robotics, and UAVs, providing stable and scalable positioning and communication solutions.
Product Features
4G Cat.1
Full-band RTK positioning
Bluetooth communication Wi-Fi communication
CAN communication
Remote upgrade
IMU navigation
Attitude data
Built-in TF card slot
Mobile station/base station seamless switching
Performance
| Category | Attribute | Specification |
| Host Characteristics | 4G Operating Bands | LTE FDD B1/3/5/8 |
| LTE TDD B34/38/39/40/41 | ||
| Supported Carriers | Mobile, China Telecom, China Unicom, China Broadnet | |
| Communication Protocol | TCP, UDP | |
| Bluetooth | Supports BLE 5.2 | |
| Bluetooth Transmission Range | 30 meters | |
| Radio Station | Data Transmission | |
| Electrical Characteristics | Radio Station Transmission Range | 1000 meters |
| Wi-Fi | Customized per customer requirement | |
| Wi-Fi Transmission Range | Customized per customer requirement | |
| Operating Voltage | 9 V – 36 V | |
| Operating Current | ≤200 mA @ DC12V | |
| Built-in Battery | 250 mAh @ 3.7 V | |
| Environmental Characteristics | Operating Temperature | -20°C ~ +75°C |
| Storage Temperature | -40°C ~ +75°C | |
| Operating Humidity | 10% – 85% RH, non-condensing | |
| Mechanical Characteristics | Waterproof Rating | IP67 |
| Host Dimensions | 143 × 143 × 48 mm | |
| Host Weight | 350 g | |
| Material | ASA | |
| IMU Characteristics | Gyroscope | Range: ±125°/s |
| Zero Bias Repeatability: 0.5°/s | ||
| Accelerometer | Range: ±2 g | |
| Zero Bias Repeatability: 20 mg | ||
| Zero Bias Stability: 50 µg | ||
| Velocity Random Walk: 0.07 m/s/√(h) | ||
| GNSS Characteristics | Supported Constellations & Frequencies | GPS: L1C/A, L2P, L2C, L5, L1C |
| BDS: -2 B1I, B2I, B3I | ||
| BDS: -3 B1I, B1C, B2a, B2b, B3I | ||
| Galileo: E1, E5b, E5a, E5, AltBoC, E6c | ||
| QZSS: L1C/A, L2C, L5, L1C | ||
| SBAS: L1C/A, L5 | ||
| IRNSS*: L5 | ||
| Single Point Accuracy | ≤1.5 m | |
| RTK Positioning Accuracy | 2.5 cm ± 1 ppm | |
| Velocity Accuracy | ≤0.02 m/s | |
| Heading Accuracy | 0.2°/1 m baseline | |
| Assistance for Dead Reckoning (Error) | 3% d (d = distance traveled) | |
| Cold Start Time | ≤30 s | |
| Hot Start Time | ≤10 s | |
| Update Rate | 1 – 10 Hz (default 1 Hz) | |
| Baud Rate | 115200–460800 bps (default 115200 bps) | |
| Data Format | NMEA 0183 | |
| Differential Data Format | RTCM 3.3/3.2/3.1/3.0 | |
| Others | Anti-jamming Certification | Compatible with customer anti-jamming certification |
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