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28 July 1997 Time-frequency-based ISAR image formation technique
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Abstract
Conventional radar range-Doppler imaging uses the Fourier transform to retrieve Doppler information. Due to a target's complex motion, the Doppler frequency shifts are actually time-varying. By using the Fourier transform, the Doppler spectrum becomes smeared and the image becomes blurred. In this paper, we propose a time-frequency based ISAR image formation technique to replace the Fourier based ISAR image formation for resolving image blurring problem without resorting to sophisticated motion compensation algorithms. Some high resolution time-frequency transforms are discussed and examples of applying the time-frequency based image formation to simulated ISAR data are given.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Victor C. Chen "Time-frequency-based ISAR image formation technique", Proc. SPIE 3070, Algorithms for Synthetic Aperture Radar Imagery IV, (28 July 1997); https://doi.org/10.1117/12.281581
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