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Improved multilevel physical optics algorithm for fast computation of monostatic radar cross section

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3 Author(s)
Yuyuan An ; Dept. of Commun. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China ; Daoxiang Wang ; Rushan Chen

This paper proposes an acceleration technique to fast evaluate the monostatic radar cross section (RCS) with the multilevel physical optics (MLPO) algorithm. The proposed method combines the adaptive cross approximation (ACA) algorithm with the MLPO to fast evaluate two-dimensional monostatic RCS (two-dimensional monostatic RCS over a range of elevation angles θ and azimuths angles φ at a fixed frequency f, or a range of frequencies f and azimuths angles φ at a fixed elevation angle θ) responses. Owing to the phase compensation in the MLPO, the matrix corresponding to the compensated back-scattered field of each group is highly rank-deficient, which is compressed with ACA in a multilevel fashion therefore a lot of central processing unit time will be saved. The rank-deficiency, accuracy and computational complexity of the proposed method have been studied through a couple of numerical examples, which illustrate the effectiveness of the proposed approach.

Published in:

Microwaves, Antennas & Propagation, IET  (Volume:8 ,  Issue: 2 )