Abstract:

The imperfection of existing spatial resolution expression of supersynthesis radiometers is analyzed， a more accuracy spatial resolution expression is presented. The minimum redundancies linear array （MRLA） is firstly used in the antenna system of supersynthesis radiometers to increase the number of small baseline and the coverage area of low spatial frequency，then sidelobes are suppressed and the imaging quality is improved. Finally，the validity of the improved supersynthesis radiometer system is demonstrated by simulator experiment from two aspects: firstly, the sidelobes of the array factor are greatly depressed; secondly, the imaging performance of point source is greatly improved.