An Attitude Data Measurement System Based on Dual-Band Antenna Direction Finding

An attitude data measurement system based on a dual-band antenna direction finding is proposed in this paper. The system aims at the interference from complex magnetic environments in azimuth data measurement for unmanned vehicles. The principle of the dual-band antenna direction finding is introduced first. An attitude data measurement system based on the high-performance microcontroller is designed, which incorporates the extended Kalman filter algorithm for data fusion based on raw data of GNSS and inertial navigation unit in software design. Finally, a comparison of attitude estimation is made between the proposed system with the one based on a geomagnetic sensor by taking flights in the same environment, validating the advantages of a proposed system based on the dual-band antenna direction finding.