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Proceedings Paper

Radon transforms and time-frequency representations for ISAR motion compensation and imaging
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Paper Abstract

The use of the Radon transform and the Wigner-Radon power spectrum for ISAR motion compensation is described. It is shown that the local Radon power spectrum is closely related to the Cohen's class of quadratic time-frequency representations in a similar way as the Radon and Fourier transform are related. The peak of the local Radon transform is used as a measure for the velocity towards the radar of a moving target. The velocity estimate can be used to align the range profiles and perform target radial motion correction. Another application of the Radon transformation is the correction for time-variation of Doppler frequency of the signal during the Coherent Processing Interval. The Radon transform of the cross-range time-frequency representation of the signal is used for focusing an ISAR image that has been blurred due to non-uniform target rotation.

Paper Details

Date Published: 8 March 2002
PDF: 12 pages
Proc. SPIE 4738, Wavelet and Independent Component Analysis Applications IX, (8 March 2002); doi: 10.1117/12.458738
Show Author Affiliations
Phillippe Steeghs, TNO Physics and Electronics Lab. (Netherlands)
Leon Kester, TNO Physics and Electronics Lab. (Netherlands)
Sjoerd Gelsema, TNO Physics and Electronics Lab. (Netherlands)


Published in SPIE Proceedings Vol. 4738:
Wavelet and Independent Component Analysis Applications IX
Harold H. Szu; James R. Buss, Editor(s)

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