AO53-2 is a full-system, full-frequency high-precision positioning and orientation module supporting BDS, GPS, GLONASS, Galileo, and QZSS. Built on a next-gen GNSS SoC with dual-core CPU, RTK co-processor, and 1408 channels, it delivers powerful processing, fast acquisition, and reliable accuracy. With multi-frequency anti-interference technology, it ensures robust RTK performance even in complex environments, making it ideal for UAVs, precision agriculture, surveying, mapping, and intelligent driving.
Product Features
Supports full-system, full-frequency high-precision RTK positioning and dual-antenna directional solution
Supports BDS B1I/B2I/B3I + GPS L1/L2/L5 + GLONASS L1/L2+ Galileo E1/E5a/E5b + QZSS L1/L2/L5 + SBAS
Supports AGPS
Dual-RTK dual RTK engine technology
Differential input with adaptive RTCM format recognition
Dual antenna inputs with antenna signal detection capability
Compact dimensions (54.3mm × 35.0mm × 10.7mm ± 0.5mm) suitable for space-constrained applications
Performance
| Parameters | Technical Parameters |
| Constellation frequency point | Main antenna： BDS B1I、B2I、B3I GPS L1C/A、L2P(Y)、L2C、L5 Galileo E1、E5a、E5b GLONASS L1、L2 QZSS L1、L2、L5 |
| From the antenna： BDS B1I、B2I、B3I GPS L1C/A、L2C Galileo E1、E5b GLONASS L1、L2 QZSS L1、L2 | |
| Time of first fix | Cold start ＜30s |
| Time accuracy (RMS) | 20ns |
| Speed Accuracy(RMS) | 0.03m/s |
| initialization time | <5s (typical value) |
| Baud Rate | 115200- 230400bps (Default 115200bps) |
| Max navigation update rate | 20Hz (Default 1Hz) |
Pin Parameters
| No. | Name | I/O | Description |
| 1 | NC | - | No Connection |
| 2 | VCC | P | Main Power Supply |
| 3 | NC | - | No Connection |
| 4 | NC | - | No Connection |
| 5 | RESET | I | System Reset (Active Low, level must be held for at least 5 ms) |
| 6 | NC | - | No Connection |
| 7 | NC | - | No Connection |
| 8 | EVENT1 | I | Event Trigger |
| 9 | NC | - | No Connection |
| 10 | GND | G | Ground |
| 11 | TXD3 | O | UART 3 Transmit Data |
| 12 | RXD3 | I | UART 3 Receive Data |
| 13 | GND | G | Ground |
| 14 | TXD2 | O | UART 2 Transmit Data |
| 15 | RXD2 | I | UART 2 Receive Data (For RTCM message input) |
| 16 | GND | G | Ground |
| 17 | TXD1 | O | UART 1 Transmit Data |
| 18 | GND | G | Ground |
| 19 | PPS | O | Pulse Per Second Output |
| 20 | RXD1 | I | UART 1 Receive Data |
| 21 | ANT_B | I | GNSS Antenna Signal Input (Main Antenna) |
| 22 | ANT_H | I | GNSS Antenna Signal Input (Secondary/Auxiliary Antenna) |
Product Application
Unmanned Aerial Vehicles
Automotive Applications
Precision Agriculture
Maritime Navigation
Intelligent Driving Examinations
Surveying and Mapping
Intelligent Robotics
Smart Ports
Power Grids and Electricity
Intelligent Transportation
Smart ports
Protocols
| Parameter | Protocol |
| Data Format | NMEA 0183，Unicore |
| Differential data | RTCM3.X |
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