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International Journal of Antennas and Propagation
Volume 2014, Article ID 870352, 10 pages
http://dx.doi.org/10.1155/2014/870352
Research Article

OTHR Spectrum Reconstruction of Maneuvering Target with Compressive Sensing

National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China

Received 27 January 2014; Accepted 2 April 2014; Published 27 April 2014

Academic Editor: Christoph F. Mecklenbräuker

Copyright © 2014 Yinghui Quan et al. 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.

Abstract

High-frequency (HF) over-the-horizon radar (OTHR) works in a very complicated electromagnetic environment. It usually suffers performance degradation caused by transient interference. In this paper, we study the transient interference excision and full spectrum reconstruction of maneuvering targets. The segmental subspace projection (SP) approach is applied to suppress the clutter and locate the transient interference. After interference excision, the spectrum is reconstructed from incomplete measurements via compressive sensing (CS) by using a redundant Fourier-chirp dictionary. An improved orthogonal matching pursuit (IOMP) algorithm is developed to solve the sparse decomposition optimization. Experimental results demonstrate the effectiveness of the proposed methods.