Makerfire UTMSYS USR20-A&G RTK Ground Base Station&Sky Side

USR20 RTK Positioning Kit for UAVs – Sky Side + Ground Base Station The USR20 RTK Positioning Kit is a complete high-precision GNSS positioning solution designed for UAVs, drones, autonomous platforms, surveying, inspection, and research applications. This kit includes both the USR20-A Positioning/Orientation RTK Module Sky Side and the USR20-G RTK Ground Base Station, providing centimeter-level positioning accuracy, real-time heading calculation, and reliable differential correction support for professional UAV operations. The USR20-A Sky Side module is installed on the UAV to provide high-precision positioning and orientation data, while the USR20-G Ground Base Station works as a GNSS reference station to receive satellite signals and provide correction data.

Together, they help reduce common GNSS errors caused by ionospheric delay, tropospheric delay, satellite orbit deviation, and clock errors, improving positioning accuracy from meter-level to centimeter-level. With multi-frequency GNSS support, a 20Hz data update rate, fast initialization, and strong resistance to electromagnetic interference, the USR20 RTK Kit is ideal for UAV missions that require stable navigation, precise hovering, accurate route tracking, and reliable autonomous flight control. Key Features Complete UAV RTK Solution: Includes both sky-side positioning module and ground-side RTK base station.

Centimeter-Level Positioning: Provides high-precision GNSS RTK positioning for demanding UAV applications. Real-Time Heading Calculation: The sky-side module uses dual antennas to support accurate positioning and orientation data. Multi-Constellation GNSS Support: Compatible with GPS, BDS, GLONASS, Galileo, and QZSS systems.

High Update Rate: 20Hz data update rate for real-time navigation and flight control feedback. Fast Initialization: Cool start ≤ 30s and hot start ≤ 5s for rapid deployment. Strong Anti-Interference Performance: The sky-side electronic compass helps reduce the impact of electromagnetic interference.

Compact Airborne Design: The USR20-A weighs only 30g, making it suitable for UAV integration. Durable Ground Station: The USR20-G base station features a compact integrated design with antenna and enclosure. Typical Applications UAV surveying and mapping Precision inspection missions Autonomous UAV navigation High-precision hovering and route tracking Agriculture, construction, and infrastructure monitoring Security, patrol, and research UAV systems Autonomous vehicles and robotic platforms Package Includes 1 × USR20-A Positioning/Orientation RTK Module Sky Side 1 × USR20-G RTK Ground Base Station System Specifications Positioning Accuracy Centimeter-level RTK positioning GNSS Systems BDS / GPS / GLONASS / Galileo / QZSS Data Update Rate 20Hz Cool Start ≤ 30s Hot Start ≤ 5s Operating Temperature -20°C to 60°C Supported GNSS Frequency Bands BDS B1I / B2I / B3I GPS L1C/A / L2P(Y) / L2C / L5 GLONASS L1 / L2 Galileo E1 / E5a / E5b QZSS L1 / L2 / L5 USR20-A Sky Side Specifications Working Voltage 12V Working Current 350mA Electronic Compass 3-axis Antenna Gain 2.5 dBi LAN Gain 33±2dB RTK Measurement Time ≤ 5 minutes @ 2.0m CEP Data Update Rate 20Hz Size 52 × 34.8 × 14.5mm Weight 30g Operating Temperature -20°C to 60°C USR20-A

Sky Side Interfaces CONFIG: Type-C configuration interface RTCM IN: GH1.25-6P differential signal input interface RTK OUT: GH1.25-10P flight controller GPS1 interface MASTER: MMCX main antenna interface for positioning SLAVE: MMCX secondary antenna interface for direction finding SW: Safety button LED: Colored indicator lights SYS: Flight control indicator lights PWR: RTK power LED ERR: RTK error LED 3D: RTK 3D positioning mode indicator RTK: RTK FIX mode indicator USR20-G Ground Base Station Specifications Working Voltage 12–25V Working Current 350mA IMU 3-axis accelerometer + 3-axis gyroscope Antenna Gain 5 dBi Data Update Rate 20Hz Size with Antenna 200 × 160 × 160mm Weight 650g Bluetooth Protocol BLE 5.0 / SPP2.1 Antenna Interface SMA internal hole and external thread Operating Temperature -20°C to 60°C Why Choose the USR20 RTK Kit? The USR20 RTK Kit combines an airborne RTK positioning and orientation module with a dedicated ground base station, creating a reliable high-precision navigation system for UAV platforms. It is especially suitable for applications where standard GNSS accuracy is not enough, such as aerial surveying, inspection, autonomous flight, precision landing, and route-following missions.