Title :
Doppler aliasing artifact filtering in SAR imagery using randomised stepped-frequency waveforms
Author :
Luminati, J.E. ; Hale, T.B. ; Temple, M.A. ; Havrilla, M.J. ; Oxley, M.E.
Author_Institution :
Air Force Inst. of Technol., Wright-Patterson AFB, OH, USA
Abstract :
A new technique for mitigating Doppler aliasing artifacts in synthetic aperture radar (SAR) imagery is demonstrated. The technique uses continuous-wave (CW) transmission of randomised stepped-frequency waveforms. Subsequent processing places Doppler aliasing artifacts in Doppler filter s, effectively removing them from the imagery. Simulated 2-D SAR images illustrate the effectiveness of the technique.
Keywords :
CW radar; Doppler radar; antialiasing; filtering theory; radar imaging; synthetic aperture radar; Doppler aliasing artifact filtering; Doppler aliasing artifacts mitigation; Doppler filter s; SAR imagery; continuous-wave transmission; randomised stepped-frequency waveforms; synthetic aperture radar;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20046440
