A method to enlarge the FOV for 8 mm band synthetic aperture radiometer
一种扩大8 mm波段综合孔径辐射计成像视场的方法

The field of view (FOV) of 8 mm band synthetic aperture radiometer with regular Y-shaped array is small due to the relative large electronic scale of the RF front. To overcome this disadvantage, a kind of star-shaped array is presented firstly. In the star-shaped array, the distance between the visibilities is only half of that of the antennas, so it doubles the imaging FOV. Then to deal with the missing visibilities of the star-shaped array, an image restoration method based on back-dropping and projecting onto convex set (POCS) is presented, and imaging simulations are carried out. The simulations validate the effectivity of the presented method.