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2017-07-10

3-D Imaging of High-Speed Moving Space Target via Joint Parametric Sparse Representation

By Yuxue Sun, Meng Jiang, Ying Luo, Qun Zhang, and Chunhui Chen
Progress In Electromagnetics Research M, Vol. 58, 125-134, 2017
doi:10.2528/PIERM17041401

Abstract

The high-speed moving of space targets introduces distortion and migration to range profile, which will have a negative effect on three-dimensional (3-D) imaging of targets. In this paper, based on joint parametric sparse representation, a 3-D imaging method for high-speed moving space target is proposed. First, the impact of high speed on range profile of target is analyzed. Then, based on an L-shaped three-antenna interferometric system, a dynamic joint parametric sparse representation model of echoes from three antennas is established. The dictionary matrix is refined by iterative estimation of velocity. Moreover, an improved orthogonal matching pursuit (OMP) algorithm is proposed to recover interferometric phase information. Finally, with the phase information, interferometric processing is conducted to obtain the 3-D image of target scatterers. The simulation results verify the effectiveness of the proposed method.

Citation


Yuxue Sun, Meng Jiang, Ying Luo, Qun Zhang, and Chunhui Chen, "3-D Imaging of High-Speed Moving Space Target via Joint Parametric Sparse Representation," Progress In Electromagnetics Research M, Vol. 58, 125-134, 2017.
doi:10.2528/PIERM17041401
http://jpier.org/PIERM/pier.php?paper=17041401

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