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Technical Program

Paper Detail

Paper:	SPTM-L8.5
Session:	Time-Frequency Distributions and Radar
Time:	Friday, May 19, 11:20 - 11:40
Presentation:	Lecture
Topic:	Signal Processing Theory and Methods: Non-stationary Signals and Time-Frequency Analysis
Title:	Computationally Efficient Time-Varying ISAR Imaging
Authors:	Stephen Alty, King's College London, United Kingdom; Andreas Jakobsson, Karlstad University, Sweden
Abstract:	By exploiting the relative motion between the target and the radar, high-resolution images of moving targets can be produced using inverse synthetic aperture radar (ISAR). Recent studies have shown that accurate ISAR images can be obtained using the non-parametric high-resolution Capon and APES spectral estimators. In this paper, we propose a computationally efficient time-updating of the two-dimensional (2-D) Capon and APES spectral estimators using their inherent time-varying displacement structures. Numerical simulations indicate that the proposed implementation offers a significant reduction in computational complexity as compared to other recent implementations.