Holybro H-RTK Unicore UM982 Dual Antenna GPS Module for UAV Autopilots

Introduction

The Holybro H-RTK Unicore UM982 is a high-precision dual-antenna RTK GPS module designed to deliver extremely accurate positioning and heading data for advanced UAV autopilots. It offers a solution for obtaining compass-less yaw information, commonly known as GPS Heading or Moving Baseline Yaw, which is crucial for stable flight control in complex environments. This module is perfect for drone professionals and serious hobbyists seeking unparalleled navigation accuracy.

Key Advantages

• Centimeter-level RTK positioning accuracy for precise navigation.
• Dual-antenna design provides reliable magnetic-free heading (Yaw) information.
• Mitigates magnetic interference from motors, electronics, and environmental factors.
• Supports multiple GNSS constellations: GPS, GLONASS, Beidou, Galileo, and QZSS.
• Functions as a vehicle GPS with RTK correction or as a base station for RTK data transmission.
• Includes an integrated magnetometer, LED, and safety switch for enhanced functionality.
• High update rate of 20Hz for both positioning and heading data ensures real-time responsiveness.
• Robust design suitable for demanding FPV and UAV applications.

Technical Specifications

• Brand: Holybro
• Model: H-RTK Unicore UM982
• Application: Rover, Moving Base, Base Station
• Compass: IST8310
• GNSS: BDS B1I/B2I/B3I; GPS L1C/A/L2P(Y)/L2C/L5; GLONASS L1/L2; Galileo E1/E5a/E5b; QZSS L1/L2/L5
• RTK Accuracy (RMS): Horizontal: 0.8 cm + 1 ppm; Vertical: 1.5 cm + 1 ppm
• DGPS Accuracy (RMS): Horizontal: 0.4 m; Vertical: 0.8 m
• Single Point Positioning Accuracy (RMS): Horizontal: 1.5 m; Vertical: 2.5 m
• Heading Accuracy: 0.1°/1m baseline
• Velocity Accuracy: 0.03 m/s
• Antenna Peak Gain (MAX): 2dBi
• LNA Gain (Typical): 33±2dB
• Time to First Fix: Cold Start: ≤ 30s; Hot Start: ≤ 5s
• RTK-SurveyIn-Time: ≤ 5 minutes @ 2.0mCEP
• Data & Update Rate: 20 Hz Positioning & Heading; 20 Hz Raw Observation Data
• Ports: Port 1: GH1.25 10-pin; Port 2: USB Type-C; Port 3: UART 2 (GH1.25 6-pin)
• Cable Length: Board: SMA Female; Antenna: SMA Male
• Baud Rate: 230400 (adjustable), 5Hz default
• Operating Voltage: 4.75V~5.25V
• Current Consumption: ~350mA
• Dimensions (Board): 34.8*58.9*14.4mm
• Antenna Diameter: 27.5 mm
• Antenna Height: 59mm
• Weight: 37.9g (without antennas)
• Package Includes: 1x H-RTK UM982, 2x Precision helical antennas, 2x Antenna mounts, 2x SMA Cables (40cm), 2x 10pin to 10pin JST-GH Cable, 1x 10pin to 6pin JST-GH Cable, 1x 6-pin to 6-pin JST-GH Cable
• LED Status Driver: Supported in PX4 1.14, ArduPilot 4.4.0 and newer.

Applications

This versatile GPS module is ideal for Rover applications, moving base setups, and as a base station for RTK positioning. It's perfectly suited for advanced FPV drones, professional UAVs used in surveying, mapping, inspection, agricultural applications, and any scenario requiring highly precise and reliable navigation data, especially where magnetic interference is a concern.

Compatibility

The module operates on a voltage range of 4.75V to 5.25V and features multiple interfaces including GH1.25 10-pin, USB Type-C, and UART 2 (GH1.25 6-pin). The LED status driver is supported in PX4 1.14, ArduPilot 4.4.0 and newer, ensuring compatibility with popular autopilot systems.

FAQ

What makes the Holybro H-RTK Unicore UM982 ideal for drone navigation?

The H-RTK UM982 offers centimeter-level RTK positioning accuracy and provides reliable heading information without a compass. This dual-antenna design eliminates magnetic interference, ensuring stable and precise flight control for UAVs.

Can this Holybro GPS module be used without an RTK correction source?

Yes, the module functions as a standard GPS with DGPS or single-point positioning accuracy even without RTK data. It can also serve as a base station to broadcast RTCM data for other receivers.

What are the key technical specifications of the UM982 module?

It supports multiple GNSS constellations (GPS, GLONASS, Beidou, Galileo, QZSS), offers 20Hz update rates for positioning and heading, and has a horizontal RTK accuracy of 0.8 cm + 1 ppm. It operates on 4.75V~5.25V and consumes ~350mA.

Where can I buy the Holybro H-RTK Unicore UM982 in Europe?

You can order the Holybro H-RTK Unicore UM982 GPS module from HTDRONE. We offer fast shipping within Poland and reliable delivery to Ukraine via Nova Poshta, as well as worldwide shipping via DHL.

Is the Holybro UM982 compatible with popular autopilot software?

Yes, the module is designed for autopilot integration. The LED status driver is supported in PX4 1.14, ArduPilot 4.4.0, and newer versions, ensuring smooth integration with popular flight control systems.