ISAR Imaging of Maneuvering Targets Based on the Modified Discrete Polynomial-Phase Transform

Yong Wang; Ali Cherif Abdelkader; Bin Zhao; Jinxiang Wang

doi:10.3390/s150922401

ISAR Imaging of Maneuvering Targets Based on the Modified Discrete Polynomial-Phase Transform

Sensors (Basel). 2015 Sep 3;15(9):22401-18. doi: 10.3390/s150922401.

Authors

Yong Wang¹, Ali Cherif Abdelkader², Bin Zhao³, Jinxiang Wang⁴

Affiliations

¹ Research Institute of Electronic Engineering Technology, Harbin Institute of Technology, Harbin 150001, China. wangyong6012@hit.edu.cn.
² Research Institute of Electronic Engineering Technology, Harbin Institute of Technology, Harbin 150001, China. Abdelkader123@163.com.
³ Research Institute of Electronic Engineering Technology, Harbin Institute of Technology, Harbin 150001, China. zhaobinhit1988@hit.edu.cn.
⁴ Research Institute of Electronic Engineering Technology, Harbin Institute of Technology, Harbin 150001, China. jxwang@hit.edu.cn.

Abstract

Inverse synthetic aperture radar (ISAR) imaging of a maneuvering target is a challenging task in the field of radar signal processing. The azimuth echo can be characterized as a multi-component polynomial phase signal (PPS) after the translational compensation, and the high quality ISAR images can be obtained by the parameters estimation of it combined with the Range-Instantaneous-Doppler (RID) technique. In this paper, a novel parameters estimation algorithm of the multi-component PPS with order three (cubic phase signal-CPS) based on the modified discrete polynomial-phase transform (MDPT) is proposed, and the corresponding new ISAR imaging algorithm is presented consequently. This algorithm is efficient and accurate to generate a focused ISAR image, and the results of real data demonstrate the effectiveness of it.

Keywords: DPT; ISAR; PPS; maneuvering target.