SAR correlation technique - An algorithm for processing data with large range walkThis paper presents an algorithm for synthetic aperture radar (SAR) azimuth correlation with extraneously large range migration effect which can not be accommodated by the existing frequency domain interpolation approach used in current SEASAT SAR processing. A mathematical model is first provided for the SAR point-target response in both the space (or time) and the frequency domain. A simple and efficient processing algorithm derived from the hybrid algorithm is then given. This processing algorithm enables azimuth correlation by two steps. The first step is a secondary range compression to handle the dispersion of the spectra of the azimuth response along range. The second step is the well-known frequency domain range migration correction approach for the azimuth compression. This secondary range compression can be processed simultaneously with range pulse compression. Simulation results provided here indicate that this processing algorithm yields a satisfactory compressed impulse response for SAR data with large range migration.
Document ID
19850035411
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Jin, M. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wu, C. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1983
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking
Meeting Information
Meeting: 1983 International Geoscience and Remote Sensing Symposium (IGARSS ''83)