Evaluation of time-frequency filtering for SAR/ISAR motion compensation via instantaneous frequency estimators

Gabriel Thomas; Ke Liu; Sergio D. Cabrera; Benjamin C. Flores

doi:10.1117/12.257218

5 November 1996 Evaluation of time-frequency filtering for SAR/ISAR motion compensation via instantaneous frequency estimators

Gabriel Thomas, Ke Liu, Sergio D. Cabrera, Benjamin C. Flores

Author Affiliations +

Proceedings Volume 2845, Radar Processing, Technology, and Applications; (1996) https://doi.org/10.1117/12.257218
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

In previous work, the authors have proposed the compensation of translational motion of an object via time-frequency filtering in a way that separation of scatterers can be done and compensation can be achieved selectively. In this paper, the effect of filtering in the time-frequency domain is studied focusing on the effects that this processing introduces to the phase of the scatterer response. The instantaneous frequency associated with one scatterer in the image is estimated and compared to the estimated frequency obtained for the case where only that scatterer is present by itself. Deviations caused by these two computations are presumed to affect the final compensation of an image regardless of which compensation technique is used.

Citation Download Citation

Gabriel Thomas, Ke Liu, Sergio D. Cabrera, and Benjamin C. Flores "Evaluation of time-frequency filtering for SAR/ISAR motion compensation via instantaneous frequency estimators", Proc. SPIE 2845, Radar Processing, Technology, and Applications, (5 November 1996); https://doi.org/10.1117/12.257218

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