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The JS-RK40 is a dual-band (L1, L5) high-precision GNSS module with advanced multi-band and multi-mode signal tracking. It features an anti-multipath and anti-jamming RF front-end with up to 8 interference rejection filters, improving accuracy and TTFF in complex scenarios. Built on a high-performance SoC, it ensures fast acquisition and ultra-high sensitivity. Dynamic power management supports continuous positioning with low power consumption. Designed for UAVs, it offers multi-constellation joint calculation, providing centimeter-level accuracy in challenging environments like urban canyons and indoor-outdoor transitions.
Product Features
Based on high-performance GNSS SOC chip
Navigation update rate up to 10Hz
200 tracking channels and dedicated search engine
Low power design
Smart interference detection and suppression
Supports GPS, BDS, GLONASS, Galileo, QZSS and IRNSS
Supports SBAS
Supports A-GNSS
Indoor and outdoor multipath detection and compensation
Integrated TCXO, LNA, SAW, RTC
Compact and lightweight (Bottom: Φ39.80mm Top: Φ35.00mm Height: 32.00mm),（<10.20g）
ROHS Compliant
Supports standard NMEA 0183 /RTCM3.X
Supports two working modes: Rover and Base Station
Integrated a geomagnetic sensor
Performance Indicators
| Parameter | Specification |
| Receiver type | GPS L1 L5 |
| BDS B1I B1C B2I B2B B2A | |
| Galileo E1 E5 | |
| GLONASS G1 | |
| QZSS L1 L5 | |
| IRNSS L5 | |
| Sensitivity | Tracking65 dBm |
| Reacquisition: -159 dBm | |
| Hot Start: -159 dBm | |
| Cold Start: -148 dBm | |
| Time-To-First-Fix | Cold Start: 28 s |
| AGPS: 1.5 s | |
| Hot Start: 1 s | |
| Time Accuracy | PPS: < 20 ns RMS |
| Velocity Accuracy | 0.1 m/s CEP |
| Operational Limits | Dynamics: ≤ 4 g |
| Altitude: 20 000 m | |
| Velocity: 500 m/s | |
| Baud Rate | 115200–921600 bps (default 115200 bps) |
| Max Navigation Update Rate | 10 Hz (default 1 Hz) |
Pin Parameters
| No. | Name | I/O | Description |
| 1, A | GND | - | Ground |
| 2, B | PPS | O | Pulse Per Second output |
| 3, C | NC | - | NOT USE, KEEP OPEN |
| 4, D | SDA | I/O | I2C Data (keep open if not used) |
| 5, E | SCL | I/O | I2C Clock (keep open when not used) |
| 6, F | TX1 | O | UART1 Data output |
| 7, G | RX1 | I | UART1 Data input |
| 8, H | VCC | P | Power Supply Voltage |
Product Application
UAV/Drones
Smart Transportation
Robotics
Wearable Devices
Smart Logistics Dispatching
Car Navigation and Tracking
Power Grid & Electricity
Precision Agriculture
Logistics Security
Handheld Terminals
Protocols
| Protocol | Type |
| NMEA 0183 | Input/Output, ASCII |
| RTCM3.X | Input/Output |
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