Generation and assessment of turntable SAR data for the support of ATR development

Marvin N. Cohen; Gregory A. Showman; K. James Sangston; Vincent B. Sylvester; Lamar Gostin; C. Ruby Scheer

doi:10.1117/12.326759

14 October 1998 Generation and assessment of turntable SAR data for the support of ATR development

Marvin N. Cohen, Gregory A. Showman, K. James Sangston, Vincent B. Sylvester, Lamar Gostin, C. Ruby Scheer

Proceedings Volume 3462, Radar Processing, Technology, and Applications III; (1998) https://doi.org/10.1117/12.326759
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Inverse synthetic aperture radar (ISAR) imaging on a turntable-tower test range permits convenient generation of high resolution two-dimensional images of radar targets under controlled conditions for testing SAR image processing and for supporting automatic target recognition (ATR) algorithm development. However, turntable ISAR images are often obtained under near-field geometries and hence may suffer geometric distortions not present in airborne SAR images. In this paper, turntable data collected at Georgia Tech's Electromagnetic Test Facility are used to begin to assess the utility of two- dimensional ISAR imaging algorithms in forming images to support ATR development. The imaging algorithms considered include a simple 2D discrete Fourier transform (DFT), a 2-D DFT with geometric correction based on image domain resampling, and a computationally-intensive geometric matched filter solution. Images formed with the various algorithms are used to develop ATR templates, which are then compared with an eye toward utilization in an ATR algorithm.

Citation Download Citation

Marvin N. Cohen, Gregory A. Showman, K. James Sangston, Vincent B. Sylvester, Lamar Gostin, and C. Ruby Scheer "Generation and assessment of turntable SAR data for the support of ATR development", Proc. SPIE 3462, Radar Processing, Technology, and Applications III, (14 October 1998); https://doi.org/10.1117/12.326759

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