Cederquist J N, Eismann M T, Tai A M
Appl Opt. 1989 Oct 1;28(19):4182-9. doi: 10.1364/AO.28.004182.
A two holographic optical element (HOE) system for polar formatting of spotlight mode synthetic aperture radar (SAR) data was designed, fabricated, and successfully tested. With the addition of a spatial light modulator, a third phase-compensating HOE, and a Fourier transform lens, the real-time polar formatting of SAR data and SAR image formation was experimentally demonstrated.