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The JS-BCK43H-3 is a high-precision, multi-frequency, multi-constellation GNSS board with integrated inertial navigation. It provides robust auxiliary positioning even in weak satellite signal conditions. The dual-antenna setup and interferometric technology enhance heading accuracy, while the integrated navigation algorithm ensures fast positioning in complex environments. Ideal for UAVs, autonomous vehicles, robotics, and precision agriculture.
Product Features
Utilises high-performance chips
Features integrated inertial navigation and dual-antenna inputs
Supports full-system multi-frequency on-chip positioning
Default 10Hz navigation update rate, IMU maximum 100Hz navigation update rate
Maintains stable satellite signal tracking during high-frequency vibrations and rapid motion
Supports multi-frequency satellite tracking across all constellations
Flexible deployment and straightforward integration
Best-in-class SWaP (Size, Weight, and Power)
Supports standard NMEA 0183 protocol, CMR, RTCM 2.X, 3.X
Suppresses potential narrowband and monophonic radio interference signals within the GNSS signal band, achieving a signal-to-noise ratio of up to 60dB
Directional accuracy: 0.2° @ 1m baseline
RTK positioning accuracy achievable at the millimetre level
Performance
| Parameter | Specification |
| Satellites Supported | GPS: L1 C/A, L2P, L2C, L5, L1C |
| BDS: -2 B11, B2I, B3I | |
| GLONASS: G1, G2, G3 | |
| Galileo: E1, E5a, E5b, E5 ALTBoC, E6c | |
| L-Band | |
| SBAS: L1 C/A, L5 | |
| BDS: -3 B11, B1C, B2a, B2b, B3I | |
| QZSS: L1 C/A, L2C, L5, L1C | |
| Navic: L5 | |
| Positioning | GPS: L1 C/A, L5 |
| Galileo: E1, E5a | |
| BDS: -3 B2a, B11 | |
| Tracking Performance (C/N Threshold) | Signal Tracking Sensitivity: -160 dBm |
| Signal Reacquisition Sensitivity: -145 dBm | |
| Time To First Fix | Cold Start: 20 s |
| Hot Start (using RTCM): 10 s | |
| Fast Reacquisition: 1 s | |
| Measurement Accuracy | Positioning Accuracy: 10 cm |
| Carrier Phase Accuracy: 1 mm | |
| Precision | PPS (RMS) Timing Accuracy: 20 ns |
| SPP Standard Single-Point Positioning Accuracy | |
| Horizontal: 1.5 m | |
| Vertical: 3 m | |
| Velocity Accuracy: 0.02 m/s | |
| Heading Accuracy: 0.2° @ 1 m base line | |
| Assisted Dead Reckoning (Error): 3% d | |
| PPP | PPP Convergence Time: 20 min |
| PPP Accuracy | |
| Horizontal: 0.1 m | |
| Vertical: 0.2 m | |
| RTK | RTK Initialization Time: 5 s (d < 10 km) |
| Initialization Confidence: 99.9% | |
| RTK Accuracy | |
| Horizontal: 8 mm + 1 ppm | |
| Vertical: 15 mm + 1 ppm | |
| Parameter | Specification |
| Data Update Rate | Default: 10 Hz |
| Max Update Rate | Single Point: 50 Hz |
| RTK: 50 Hz | |
| IMU: 100 Hz | |
| Baud Rate | 9600–921600 bps (default 115200 bps) |
| Anti-jamming | Built-in GNSS signal band internal potential narrowband and single-point radio interference suppression; jamming resistance up to 60 dB |
Pin Parameters
| Pin No. | Name | I/O | Description |
| 1, K | GND | - | Ground |
| 2 | VCC_IN | Input | GNSS Power Supply 3.5–12.0 V, typical 5 V |
| 3, G | RX1 | Input | UART1 GNSS Receive Data |
| 4, F | TX1 | Output | UART1 GNSS Transmit Data |
| 5 | GND | - | Ground |
| 6, H | 3.3V_OUT | Output | 3.3 V — for other devices power supply |
| 7, L | RX2 | Input | UART2 GNSS Receive Data |
| 8, M | TX2 | Output | UART2 GNSS Transmit Data |
| 9 | USB | Input/Output | TYPE-C Power + Data Transfer |
| 10 | RF1 | Input | GNSS Main Antenna Interface, for positioning; supply voltage 3.0–5.5 V |
| 11 | RF2 | Input | GNSS Auxiliary Antenna Interface, for heading; supply voltage 3.0–5.5 V |
| A | CS | Input/Output | Chip Select |
| B | MOSI | Output | GNSS Transmit Data |
| C | CLK | Output | Synchronous Timing |
| D | MISO | Input | GNSS Receive Data |
| E | SDRY | Input | Indicate current status, trigger host read |
| I | RESET | Output | Reset |
| J | EVENT | Output | External interrupt trigger |
| N | PPS | Output | Pulse Per Second |
Product Application
Drone Applications
Low-speed drones
Intelligent logistics dispatch
Driving examinations
Intelligent lawnmowers
Heading output
Surveying and mapping
Vehicle-mounted equipment applications
Precision agriculture and positioning services
Precision control
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