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- W2111475428 abstract "Imaging systems such as synthetic aperture radar collect band-limited data from which an image of a target scene is rendered. The band-limited nature of the data generates sidelobes, or spilled energy, most evident in the neighborhood of bright point-like objects. It is generally considered desirable to minimize these sidelobes, even at the expense of some generally small increase in system bandwidth. This is accomplished by shaping the spectrum with window functions prior to inversion or transformation into an image. A window function that minimizes sidelobe energy can be constructed based on prolate spheroidal wave functions. A parametric design procedure allows doing so, even with constraints on allowable increases in system bandwidth. This approach is extended to accommodate spectral notches or holes, although the guaranteed minimum sidelobe energy can be quite high in this case. Interestingly, for a fixed bandwidth, the minimum mean-squared-error image rendering of a target scene is achieved with no windowing at all (rectangular or boxcar window)." @default.
- W2111475428 created "2016-06-24" @default.
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- W2111475428 date "2003-07-01" @default.
- W2111475428 modified "2023-09-25" @default.
- W2111475428 title "Window functions for imaging radar: a maximum energy approach to contiguous and notched spectrums" @default.
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- W2111475428 doi "https://doi.org/10.1117/1.1578646" @default.
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