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Proceedings Paper

Clutter mitigation for space based radar by appropriate choices of array aspect ratio and radar PRF
Author(s): Zenghui Zhang; Lihua Liu; Weidong Hu; Wenxian Yu
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Paper Abstract

Different from the airborne scenario, space time adaptive processing (STAP) for space based radar (SBR) is a full system design task whose performance is significantly determined by radar system parameters such as array aspect ratio and PRF. To mitigate clutter, the two parameters should be appropriately designed. The suppression of mainbeam clutter is discussed while taking the earth's rotation and high range foldovers into consideration. Clutter rank is derived by modeling it as an equivalent two-dimensional spatially band-limited process and it is shown to be a function of array aspect ratio and radar PRF. Relationships between clutter rank and the two parameters are analyzed. Optimal array aspect ratio and radar PRF are obtained by minimizing clutter rank with the tradeoff of minimum discernable velocity (MDV). A high fidelity modeling of SBR is given to illustrate the effectiveness of the method.

Paper Details

Date Published: 10 November 2007
PDF: 5 pages
Proc. SPIE 6795, Second International Conference on Space Information Technology, 67954G (10 November 2007); doi: 10.1117/12.774578
Show Author Affiliations
Zenghui Zhang, National Univ. of Defense Technology (China)
Lihua Liu, National Univ. of Defense Technology (China)
Weidong Hu, National Univ. of Defense Technology (China)
Wenxian Yu, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 6795:
Second International Conference on Space Information Technology

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