Title
Radon transforms and time-frequency representations for ISAR motion compensation and imaging
Author
Steeghs, P.
Kester, L.
Gelsema, S.
Contributor
Szu, H.H. (editor)
Buss, J.R. (editor)
Publication year
2002
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.
Subject
Physics & Electronics
RT - Radar Technology
ISAR
Motion compensation
Radon transformation
Time-frequency analysis
Doppler effect
Focusing
Inverse synthetic aperture radar
Mathematical models
Motion compensation
Probability distributions
Radar imaging
Velocity measurement
Coherent processing interval
Time frequency representations
Wigner-Radon power spectrum
Fourier transforms
To reference this document use:
http://resolver.tudelft.nl/uuid:d5b8d408-b04d-4230-9c00-515964635a77
TNO identifier
236424
ISSN
0277-786X
Source
Wavelet and Independent Component Analysis Applications IX, 3 April 2002 through 5 April 2002, Orlando, FL, Conference code: 60208, 4738, 252-263
Series
Proceedings of SPIE - The International Society for Optical Engineering
Bibliographical note
Correspondence Address: Steeghs, P.; TNO Physics, Electronics Laboratory, Radar Systems and Info. Extraction, Oude Waalsdorperweg 63, 2509 JG, The Hague, Netherlands; email: steeghs@fel.tno.nl Sponsors: SPIE
Document type
conference paper