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Journal of Sensors
Volume 2016, Article ID 7674259, 12 pages
Research Article

Rotation Estimation for Wide-Angle Inverse Synthetic Aperture Radar Imaging

1Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
2Beijing Institute of Radio Measurement, Beijing 100854, China
3Xi’an Research Institute of Hi-Technology, Xi’an 710025, China

Received 19 July 2015; Revised 11 September 2015; Accepted 21 September 2015

Academic Editor: Sher Bahadar Khan

Copyright © 2016 Wei Zhou 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.


To present focused ISAR imaging results in the homogenous range and cross-range domain, an integrated scheme is proposed to estimate both the targets equivalent rotational velocity (RV) and rotational center (RC). The RV estimation is improved by radial projection combined with keystone processing, and then the RC is estimated through image entropy minimization. Finally, delicate imaging results may be obtained for wide-angle scenarios. Experiment results are provided to demonstrate the effectiveness of the proposed method.