Experimental results of synthetic aperture microwave radiometer

Introduces briefly the principles of the interferometric synthetic aperture, a system design of a C-band microwave interferometric synthetic aperture radiometer and its experimental results. This system has a 6-element thinned array with 11 analog complex correlators to obtain the 11 visibility functions, which result in 22 digitally synthesized spatial resolution cells. The synthetic aperture radiometer has a spatial resolution as high as 1/22 of that corresponding to a one-antenna element. The synthetic radiometer has a real aperture resolution cell in the along-track direction and has 22 synthetic aperture resolution cells in the cross-track direction. Finally, the results of imaging experiments are given.