Moving Target Detection Method Based on Range? Doppler Domain Compensation and Cancellation for UAV-Mounted Radar

TL;DR

This paper introduces a novel range-Doppler domain compensation and cancellation technique for UAV-mounted radar to improve moving target detection amidst clutter in complex environments.

Contribution

It proposes a new method combining phase compensation, clutter cancellation, and mismatch imaging specifically for UAV-mounted dual channel radar systems.

Findings

Effective clutter suppression demonstrated in simulations

Improved moving target detection accuracy in UAV experiments

Method enhances detection in complex building scenes

Abstract

Combining unmanned aerial vehicle (UAV) with through-the-wall radar can realize moving targets detection in complex building scenes. However, clutters generated by obstacles and static objects are always stronger and non-stationary, which results in heavy impacts on moving targets detection. To address this issue, this paper proposes a moving target detection method based on Range-Doppler domain compensation and cancellation for UAV mounted dual channel radar. In the proposed method, phase compensation is performed on the dual channel in range-Doppler domain and then cancellation is utilized to achieve roughly clutters suppression. Next, a filter is constructed based on the cancellation result and the raw echoes, which is used to suppress stationary clutter furthermore. Finally, mismatch imaging is used to focus moving target for detection. Both simulation and UAV-based experiment results are analyzed to verify the efficacy and practicability of the proposed method.