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Efficient geometric rectification techniques for spectral analysis algorithmThe spectral analysis algorithm is a viable technique for processing synthetic aperture radar (SAR) data in near real time throughput rates by trading the image resolution. One major challenge of the spectral analysis algorithm is that the output image, often referred to as the range-Doppler image, is represented in the iso-range and iso-Doppler lines, a curved grid format. This phenomenon is known to be the fanshape effect. Therefore, resampling is required to convert the range-Doppler image into a rectangular grid format before the individual images can be overlaid together to form seamless multi-look strip imagery. An efficient algorithm for geometric rectification of the range-Doppler image is presented. The proposed algorithm, realized in two one-dimensional resampling steps, takes into consideration the fanshape phenomenon of the range-Doppler image as well as the high squint angle and updates of the cross-track and along-track Doppler parameters. No ground reference points are required.
Document ID
19950008357
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chang, C. Y.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Pang, S. S.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Curlander, J. C.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 17, 2013
Publication Date
June 1, 1992
Publication Information
Publication: Ontario Centre for Remote Sensing, Proceedings of the 15th Canadian Symposium on Remote Sensing
Subject Category
Earth Resources And Remote Sensing
Accession Number
95N14771
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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