Complex spectral Fourier-domain imaging method for Synthetic Aperture Microwave Radiometer

Conventional microwave radiometer belongs to spatial-domain imaging system to detect area thermal source and it acquires radiometric signal from the object source point and point. Synthetic Aperture Microwave Radiometer belongs to staring imaging system. It applies Fourier-domain technique to obtain source´s microwave spectrum called visibility and thus make scanning process not necessary. This novel imaging method can save much consuming time and simplify the imaging process and it can accomplish high-speed imaging solution at the same time. The paper demonstrates how to get spatial distribution information of the of continuous area thermal sources from coherent signal receiving technique. But the signal processing in this fast imaging method brings cross interference components if the source is partly coherent. The paper gives a solution to eliminate such components.