CUAV C-RTK 2 HP GNSS Heading Module

The CUAV C-RTK 2 HP is a dual-antenna GNSS module that delivers centimetre-level RTK positioning and true GPS heading for industrial, agricultural and heavy-lift drones. By calculating yaw from the phase difference between its two antennas instead of a magnetic compass, it stays immune to interference from high-current power cables, large motors or metal payloads — a real advantage for ArduPilot builds flying in electromagnetically noisy environments.

Key features

• Dual-antenna heading calculation provides true yaw data independent of local magnetic fields, eliminating compass drift.
• RTK positioning accurate to 0.8cm + 1ppm horizontally and 1.5cm + 1ppm vertically once a fixed solution is achieved.
• Full-constellation, multi-frequency GNSS reception for fast locks and robust signal retention.
• DroneCAN and UART interfaces cover both CAN-based and legacy serial integrations with Pixhawk and Cube flight controllers.

Specifications

• Positioning accuracy (RTK): 0.8cm + 1ppm horizontal, 1.5cm + 1ppm vertical
• Heading accuracy: 0.2 degrees at 1 m antenna separation
• Sensors: RM3100 compass, ICM42688 IMU
• Interfaces: DroneCAN, UART, USB
• Input voltage: 4.7V-5.2V
• Data update rate: 5 Hz default, up to 20 Hz
• Cold start: under 30 s
• Data format: RTCM 3.x in; DroneCAN or NMEA out
• Size: 50 x 37 x 17 mm
• Weight: 40 g

Ideal for complex X-Class, cinelifter, and VTOL builds where compass interference has caused heading drift, the C-RTK 2 HP supports ArduPilot 4.4 and later firmware for an interference-proof navigational foundation.