Scanning Polarimetric Imaging Radiometer: Microwave Imaging System and Image Merging with IR and Optical Data

摘要

A passive radiometer can be turned to an active imaging system by adding active source elements to it. We conducted several observations, both active and passive, of human environments, landscapes and military equipments using coherent and incoherent sources with various polarizations. The measurements were conducted in order to emphasis the capabilities of a dual polarimetric imaging system to reveal specific details of a scene, hard to obtain with other techniques such IR. Moreover, in surveillance and security applications, radiometers can play a key role, especially in environmental analysis and object identification. In IAP institute we are interested to compare radiometric techniques for surveillance with other methods. In particular, optical, MW and IR images contain complementary and redundant information about an observed scene. Merging these images can potentially lead to a system that is effective under all conditions (day/night, fog, rain, etc.) and able to identify a wide range of objects.