Patent ID: 8742982

Claim:
Indirect radar holography apparatus for scanning a scene and generating a high-density signal pattern representing said scene, said apparatus comprising: an illumination means for illuminating said scene with radiation according to an illumination signal, a reference signal generation means for generating a reference signal from said illumination signal, a radiation detection means for detecting radiation emitted in a predetermined spectral range from a spot of said scene and for generating a radiation signal per spot from said detected radiation, a control means for controlling said illumination means and/or said radiation detection means so that radiation is detected at a number of spots distributed over the scene, wherein said number is lower than the number of intensity signals of said high-density signal pattern, a signal combination means for combining said radiation signals generated from the radiation detected at said number of spots and said reference signals to obtain a low-density signal pattern of intensity signals, and a processing means for processing the intensity signals of said low-density signal pattern and for generating said high-density signal pattern by applying compressive sensing to said low-density signal pattern.