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Extended chirp scaling algorithm for air- and spaceborne SAR data processing in stripmap and ScanSAR imaging modes

Presents a generalized formulation of the extended chirp scaling (ECS) approach for high precision processing of air- and spaceborne SAR data. Based on the original chirp scaling function, the ECS algorithm incorporates a new azimuth scaling function and a subaperture approach, which allow an effect...

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Published in:	IEEE transactions on geoscience and remote sensing 1996-09, Vol.34 (5), p.1123-1136
Main Authors:	Moreira, A., Mittermayer, J., Scheiber, R.
Format:	Article
Language:	English
Subjects:	Azimuth Chirp Data processing Earth sciences Earth, ocean, space Exact sciences and technology Frequency modulation Image coding Image sampling Interpolation Pulse compression methods Pulse modulation Signal resolution Soils Surficial geology
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container_title	IEEE transactions on geoscience and remote sensing
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creator	Moreira, A. Mittermayer, J. Scheiber, R.
description	Presents a generalized formulation of the extended chirp scaling (ECS) approach for high precision processing of air- and spaceborne SAR data. Based on the original chirp scaling function, the ECS algorithm incorporates a new azimuth scaling function and a subaperture approach, which allow an effective phase-preserving processing of ScanSAR data without interpolation for azimuth geometric correction. The azimuth scaling can also be used for automatic azimuth coregistration of interferometric image pairs which are acquired with different sampling distances. Additionally, a novel range scaling formulation is proposed for automatic range coregistration of interferometric image pairs or for improved robustness for the processing of highly squinted data. Several simulation and processing results of air- and spaceborne SAR data are presented to demonstrate the validity of the proposed algorithms.
doi_str_mv	10.1109/36.536528
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source	IEEE Electronic Library (IEL) Journals
subjects	Azimuth Chirp Data processing Earth sciences Earth, ocean, space Exact sciences and technology Frequency modulation Image coding Image sampling Interpolation Pulse compression methods Pulse modulation Signal resolution Soils Surficial geology
title	Extended chirp scaling algorithm for air- and spaceborne SAR data processing in stripmap and ScanSAR imaging modes
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