A digital aperture synthesized radiometer for synthesizing the imaging an image scene. A plurality of antenna arrays receive radiation emitted or reflected from an scene, and an analog to digital coverter converts received radiation into digitized signals. A digital beamformer synthesizes the digitized...http://www.google.com/patents/US5016018?utm_source=gb-gplus-sharePatent US5016018 - Aperture synthesized radiometer using digital beamforming techniques
