The JS-A56U9D is a high-performance concurrent GNSS receiver capable of tracking multiple systems simultaneously. With its advanced multi-band RF front-end, it supports GPS, QZSS, SBAS, Galileo, GLONASS, and BDS. By processing all visible satellites with correction data, it delivers precise RTK navigation. Powered by the JS-A56U9D engine, it offers exceptional sensitivity, fast acquisition, and robust interference suppression, ensuring reliable positioning even in challenging environments.
Product Features
Build on high performance GNSS single chip
192 search channels and 60 trace channels
Cold start acquisition sensitivity of -148dBm and -167dBm tracking sensitivity
Default 1Hz navigation update rate
Supports GPS,BDS, GLONASS, Galileo and QZSS,SBAS
Integrated TCXO, LNA, SAW, RTC
Configurable peripheral IO pins
Integrated high gain antenna
Low power consumption and it has intelligent power control mechanism
Single supply with wide voltage range
Compact size (56.0*56.0*17.2mm±0.3mm) suitable for space-sensitive application
Rich hardware interface to support multiple configurations. UART, I2C, RS232, USB
This module can be equipped with VCM5883 (IST8310) Address(8-bit)=1EH
Performance
| Parameter | Specification | |
| Receiver type | Multi-band GNSS high precision receiver | |
| Accuracy of time pulse signal | RMS | 30 ns |
| 99% | 60 ns | |
| Frequency of time pulse signal | 0.25 Hz to 10 MHz(configurable) | |
| Operational limits | Dynamics | ≤ 4 g |
| Altitude | 80,000 m | |
| Velocity | 500 m/s | |
| Velocity accuracy | 0.05 m/s | |
| Dynamic heading accuracy | 0.3 deg | |
Pin Parameters
| No. | Name | I/O | Description | |
| A | 1 | RX2 | I | Serial Port(UART 2: dedicated for RTCM3 corrections and NMEA. No UBX protocol is supported) |
| B | 2 | TX2 | O | Serial Port(UART 2: dedicated for RTCM3 corrections and NMEA. No UBX protocol is supported) |
| C | 3 | GND | G | Ground |
| D | 4 | G-ST | O | Geofence status, user defined |
| E | -- | RX | I | GPS RX Test |
| F | -- | TX | O | GPS TX Test |
| G | 5 | SCL | I/O | I2C Clock（keep open if not used） |
| H | 6 | RX/P | I | Serial Port(UART 1:primary host communications) |
| I | 7 | TX/M | O | Serial Port(UART 1:primary host communications) |
| J | 8 | GND | G | Ground |
| K | 9 | VCC | P | Main Supply |
| L | 10 | SDA | I/O | I2C Data（keep open if not used） |
Product Application
UAV
Automotive application
Precision agriculture
AVL and Location-Based Services
Marine Navigation, Fleet Management
Intelligent logistics scheduling
Measurement of surveying and mapping
Personnel protective
Driving test
Car navigation and tracking
Geographic Surveying
Intelligent robot
Protocols
| Protocol | Type |
| NMEA 0183 V4.11/ V4.0/V4.1 | Input/output, ASCII |
| RTCM 3.3 | Input/output, binary |
| UBX | Input/output, binary, u-blox proprietary |
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