The JS-AUP28-1 is a cost-effective, low-power, multi-mode GNSS positioning module supporting BDS, GPS, GLONASS, Galileo, QZSS, and SBAS. Designed to meet the needs of a wide range of applications and end products, it is powered by a high-performance SoC positioning engine. The module delivers exceptional sensitivity, fast acquisition, and robust interference suppression, ensuring reliable and accurate positioning even in challenging signal environments.
Product Features
SOC high performance GNSS Chips
Over 2 million effective correlators
72 acquisition-channel / 32 tracking
Cold start acquisition sensitivity of -148dBm and -166dBm tracking sensitivity
Up to 10 Hz navigation update rate
Supports BDS, GPS, QZSS, SBAS,GLONASS, Galileo
Supports AGPS
Integrated TCXO, LNA, SAW, RTC
Compact size (28.0mmx28.0mmx8.6mm±0.3mm) suitable for space-sensitive application
Support standard NMEA 0183, version 4.0 and 4.1, UBX
Performance
| Parameter | Specification |
| Constellation Frequency | GPS/QZSS L1C/A SBAS EGNOS, GAGAN, MSAS and WAAS GLONASS L1OF BDS B1I Galileo E1B/C |
| Sensitivity | Tracking & Navigation -166dBm |
| Reacquisition -160dBm | |
| Cold Start -148dBm | |
| Time-To-First-Fix¹ | Cold Start 29 s |
| Hot Start 1 s | |
| Horizontal Position accuracy² | Autonomous 2.0 m CEP |
| Accuracy of time pulse signal | RMS 30 ns |
| 99% 60 ns | |
| Velocity accuracy³ | 0.05 m/s |
| Operational limits4 | Dynamics ≤ 4 g |
| Altitude 80000 m | |
| Velocity 500 m/s | |
| Frequency of time pulse signal | 1Hz |
| Baud Rate | 9,600 -- 460800 bps （Default 38400 bps） |
| Max navigation update rate | 10 Hz （Default 1Hz, configurable） |
Pin Parameters
| PIN | Name | I/O | Description |
| 0 | 1PPS | O | 1PPS |
| 1 | GND/SCL | G | Ground/I2C Clock |
| 2 | GND | G | Ground |
| 3 | TX | O | TTL Output |
| 4 | RX | I | TTL Input |
| 5 | VCC | P | Main Supply |
| 6 | VBAT/SDA | P | Backup voltage supply/I2C Data |
Product Application
UAV
Automotive application
Marine navigation, fleet management
Handheld GPS receiver application
Intelligent logistics scheduling
Personnel protective
Car navigation and tracking
Intelligent robot
Protocols
| Protocol | Type |
| NMEA 0183 v4.0 and 4.1 | Input/output, ASCII |
| UBX | Input/output, binary, u-blox proprietary |
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