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 demonstra...