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The JS-BSK43H-AH is a compact anti-jamming GNSS board (39.8×30.0×8.2 mm) supporting GPS, BDS, Galileo, QZSS, NavIC, and GLONASS. It provides 0.6 cm+0.5 ppm horizontal RTK accuracy with <10 ms latency, and integrates AIM+, LOCK+, IONO+, and APME+ protection. Dual-antenna heading accuracy is 0.03° at 5 m spacing.
Product Features
High-performance chip
All-view point satellite tracking, multi-constellation, multi-frequency
789 hardware channels enabling simultaneous operation
Up to 20Hz navigation update rate
Ultra-low latency less than 10 milliseconds
Supports GPS, GLONASS, BDS, Galileo, QZSS, NavIC, SBAS satellites
Integrated TCXO, LNA, and a TF card slot up to 32GB
Compact size (39.8*30.0*8.2mm ±0.3mm), weight only 9g
Supports standard NMEA 0183, SBF, RINEX, RTCM, CMR/CMR+
AIM+ with advanced features for interference and spoofing detection and automatic mitigation
LOCK+ with robust tracking capability, excellent resistance to mechanical shock and vibration
IONO+ with advanced anti-ionospheric interference protection
APME+ multipath mitigation to separate direct signals and those reflected by nearby structures
Provides complete raw measurement data
Interference indicator, interference mitigation, and spectrum measurement functions
Supports ultra-short baseline heading output
Supports GNSS navigation
Supports Galileo OSNMA
Performance
| Parameter | Specification |
| Receivable Satellites | GPS: L1C/A, L1C, L2C, L2PY, L5 |
| BDS: B1I, B1C, B2A, B2I, B2B, B3I | |
| GLONASS: L1CA, L2CA, L2P, L2C, L3 CDMA | |
| Galileo: E1, E5a, E5b, E6 | |
| QZSS: L1C/A, L1C/B, L2C, L5, L6 | |
| Tracking Performance (C/N Threshold) | Tracking and Navigation Sensitivity: 20 dB-Hz |
| Acquisition Sensitivity: 30 dB-Hz | |
| Time To First Fix | Cold Start: < 35 s |
| Warm Start: < 10 s | |
| Reacquisition: 1 s | |
| RTK Status | Horizontal Accuracy: 0.6 cm + 0.5 ppm* |
| Vertical Accuracy: 1 cm + 1 ppm* | |
| Initialization Time: 7 s | |
| Other Positioning Status | Standalone<br>Horizontal: 1.2 m<br>Vertical: 1.9 m |
| DGNSS<br>Horizontal: 0.4 m<br>Vertical: 0.7 m | |
| Timing Accuracy | xPPS output: 1.4 ns |
| Event accuracy: < 3 ns | |
| Latency | < 10 ms |
| Velocity Accuracy | 0.03 m/s |
| Heading Accuracy (Dual Antenna) | 1 m Antenna Spacing: 0.15° (Heading), 0.25° (Pitch/Roll) |
| 5 m Antenna Spacing: 0.03° (Heading), 0.05° (Pitch/Roll) | |
| Baud Rate | 4800–4M bps (default 115200 bps) |
| Maximum Data Update Rate | 20 Hz |
Pin Parameters
| No. | Name | Input/Output | Description |
| 1 | RTK | O | RTK Positioning Indicator, active high level. LED Flashes for Float solution, LED stays steady ON for RTK Fixed solution. Outputs low level (LED off) for other positioning states or no positioning. (Green LED) |
| 2 | GPIO1 | - | Reserved |
| 3 | GPIO2 | - | Reserved |
| 4 | PPS | O | Pulse per second (Green LED) |
Product Application
UAV/Drones
Precision Agriculture
Base Station (plan to support in 2026)
Geological Hazard Monitoring
Intelligent Logistics Dispatch
Heading Output
Intelligent Robots
Vehicle-mounted Equipment
Geodetic Surveying & Mapping
Precision Control
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