Time-varying filters for ISAR motion compensation

Gabriel Thomas; Benjamin C. Flores

doi:10.1117/12.326744

14 October 1998 Time-varying filters for ISAR motion compensation

Gabriel Thomas, Benjamin C. Flores

Proceedings Volume 3462, Radar Processing, Technology, and Applications III; (1998) https://doi.org/10.1117/12.326744
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

An approach is presented for the design of time-varying filters that separate selected ISAR target signatures with a constant false alarm rate. Here, the time-frequency representation of each signature is utilized to define a binary filter which is enhanced and labeled using computer vision techniques. Upon filtering, the signatures of the targets are synthesized from their Short Time Fourier Transform representations. In order to obtain a focused radar image for each target, its filtered signature must be motion compensated in the frequency domain. Therefore, radar images can be generated for scenarios in which multiple moving targets can not be imaged otherwise. As an instance, the response of a stepped frequency radar system is simulated to demonstrate that combined signatures of aircraft are effectively separated, compensated and processed into individual images.

Citation Download Citation

Gabriel Thomas and Benjamin C. Flores "Time-varying filters for ISAR motion compensation", Proc. SPIE 3462, Radar Processing, Technology, and Applications III, (14 October 1998); https://doi.org/10.1117/12.326744

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