Version 1
: Received: 2 August 2024 / Approved: 13 August 2024 / Online: 14 August 2024 (03:03:43 CEST)
How to cite:
Lu, R.; Wu, Y.; Zhang, L.; Chen, Z. Cascade Clutter Suppression Method for Airborne FDA Radar Based on Elevation Oblique Subspace Projection and Azimuth-Doppler STAP. Preprints2024, 2024080949. https://doi.org/10.20944/preprints202408.0949.v1
Lu, R.; Wu, Y.; Zhang, L.; Chen, Z. Cascade Clutter Suppression Method for Airborne FDA Radar Based on Elevation Oblique Subspace Projection and Azimuth-Doppler STAP. Preprints 2024, 2024080949. https://doi.org/10.20944/preprints202408.0949.v1
Lu, R.; Wu, Y.; Zhang, L.; Chen, Z. Cascade Clutter Suppression Method for Airborne FDA Radar Based on Elevation Oblique Subspace Projection and Azimuth-Doppler STAP. Preprints2024, 2024080949. https://doi.org/10.20944/preprints202408.0949.v1
APA Style
Lu, R., Wu, Y., Zhang, L., & Chen, Z. (2024). Cascade Clutter Suppression Method for Airborne FDA Radar Based on Elevation Oblique Subspace Projection and Azimuth-Doppler STAP. Preprints. https://doi.org/10.20944/preprints202408.0949.v1
Chicago/Turabian Style
Lu, R., Lei Zhang and Ziyi Chen. 2024 "Cascade Clutter Suppression Method for Airborne FDA Radar Based on Elevation Oblique Subspace Projection and Azimuth-Doppler STAP" Preprints. https://doi.org/10.20944/preprints202408.0949.v1
Abstract
Airborne Frequency Diversity Array (FDA) radar operating at a high pulse repetition frequency encounters severe range-ambiguous clutter. The slight frequency increments introduced by the FDA result in angle and range coupling. Under these conditions, conventional space-time adaptive processing (STAP) often exhibits diminished performance or fails, complicating target detection. This paper proposes a method combining elevation oblique subspace projection with azimuth-Doppler STAP to suppress range-ambiguous clutter. By analyzing the relationship between elevation frequency and range, the proposed method compensates for quadratic range dependence. Through the construction of an elevation oblique subspace projection technique, an elevation adaptive filter is used to separate clutter from ambiguous regions. Residual clutter suppression is achieved through azimuth-Doppler STAP, enhancing target detection performance. Simulation results demonstrate that the proposed method effectively addresses range dependence and ambiguity issues, improving target detection performance in complex airborne FDA radar environments.
Keywords
frequency diverse array (FDA); clutter suppression; space-time adaptive processing (STAP); moving targets detection (MTI)
Subject
Engineering, Electrical and Electronic Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
