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The JS-ARP28-2 is a dual-band (L1+L5) GNSS positioning module designed for high precision with compact size and low power consumption. It features advanced multi-band tracking, anti-multipath, and interference mitigation with up to 8 interference filters. The module ensures high sensitivity, fast acquisition, and reliable performance even in challenging environments like urban canyons and indoor-outdoor transitions. Ideal for wearable devices, IoT, drones, and automotive navigation.
Product Features
Base on high performance GNSS SOC chip
Up to 10Hz update rate
200 tracking channels & a dedicated search engine
Low power design
Support GPS、BDS、GLONASS、Galileo、QZSS and IRNSS
Support SBAS.Support A-GNSS
Indoor & outdoor multipath detections and compensations
Integrate TCXO、LNA、SAW、RTC
Compact size(28.0mm x28.0mm x8.0mm±0.3mm)，lightweight(<12.0g)
Compliance ROHS standard
The module can be equipped with a geomagnetic sensor
Specifications
| Parameter | Description |
| Constellation & frequency | GPS: L1 L5 BDS: B1I B1C B2I B2B B2A Galileo: E1 E5 GLONASS: G1 QZSS: L1 L5 IRNSS: L5 |
| Sensitivity | Tracking & navigation: -165 dBm |
| Reacquisition: -159 dBm | |
| Warm start: -159 dBm | |
| Cold start: -148 dBm | |
| Time to first fix | Cold start: 28 s |
| AGPS: 1.5 s | |
| Warm start: 1 s | |
| GNSS Position accuracy | Single position<br>horizontal: 1.0 m CEP<br>vertical: 2.0 m CEP |
| Time Accuracy | PPS: < 20 ns RMS |
| Velocity | 0.1 m/s CEP |
| Operational constraint | dynamic: ≤ 4 g |
| altitude: 20000 m | |
| velocity: 500 m/s | |
| Baud rate | 9600–2M bps (default 115200 bps) |
| Max update rate | 10 Hz (default 1 Hz) |
| NO. | Name | I/O | Description |
| 1, A | SCL | I/O | I2C clock (keep it on when not in use) |
| 2, B | SDA | I/O | I2C data (keep it on when not in use) |
| 3, C | TXD | O | Serial port 1 data output |
| 4, D | RXD | I | Serial port 1 data input |
| 5, E | GND | - | Ground |
| 6, F | VCC | P | Power supply voltage |
Production Application
Drones/UAV
Automotive application
Smart robotics Wearable devices
Intelligent logistics scheduling
Vehicle navigation& tracking
Personal travel & wilderness adventure
AVL & service base location
Personal protection
Handhold receiver application
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