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    High-resolution Spaceborne SAR Processing Using the Decomposed Transfer Function

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    1463709.pdf (439.3Kb)
    Date
    2017
    Author
    Eldhuset, Knut
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    Abstract
    In this paper a new analytic decomposed transfer function (DTF) for spaceborne SAR (Synthetic Aperture Radar) processing is calculated using the stationary phase approximation and Taylor’s series expansion. The DTF copes with large Doppler centroid variations and executes range cell migration correction, secondary range compression, azimuth compression and higher order effects. A fourth-order (DTF4) and a fifth-order (DTF5) algorithm have been implemented using segmented block processing. It is shown that the DTF4 yields high quality 3-look target responses at azimuth resolution 0.3 m and range resolution 0.5 m at low squint (yaw=0.3º) for X-band. At higher squint (yaw=7.5º) the DTF5 has to be used to obtain adequate image quality.
    URI
    http://hdl.handle.net/20.500.12242/621
    https://ffi-publikasjoner.archive.knowledgearc.net/handle/20.500.12242/621
    DOI
    10.1109/TAES.2017.2687199
    Description
    Eldhuset, Knut. High-resolution Spaceborne SAR Processing Using the Decomposed Transfer Function. IEEE Transactions on Aerospace and Electronic Systems 2017
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