A new technique for eliminating Doppler aliasing artifacts in synthetic aperture radar (SAR) imagery is presented. The technique uses continuous transmission of stepped-frequency (SF) waveforms to generate a simple, but effective, approximation of a two-dimensional |sinc|2 ambiguity function. This approach ensures aliasing artifacts are placed at nulls in a Doppler filter, effectively removing them from the imagery. Various methods of generating SF waveforms are introduced and their performance is quantified. Finally, simulated SAR imagery shows elimination of more than 99% of the aliased energy
Doppler aliasing reduction in SAR imagery using stepped-frequency waveforms
IEEE Transactions on Aerospace and Electronic Systems ; 43 , 1 ; 163-175
01.01.2007
1571500 byte
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Doppler Aliasing Reduction in SAR Imagery using Stepped-Frequency Waveforms
Online Contents | 2007
|CORRESPONDENCE - Thinned Spectrum Ultrawideband Waveforms Using Stepped-Frequency Polyphase Codes
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