A new method of resolving multiple targets of low resolution radar

For the active low-resolution radar, its longitudinal resolution usually is more than one hundred meters and as high as several hundreds meters. Due to the short distance between planes which fly in a group, the ordinary low resolution radar can not distinguish them in both distance and azimuth. If we use the technology of ISAR to resolve the difference among Doppler frequency of the targets and obtain a fine resolution cross-cross image, we may separate them, but a long time of coherent processing is needed, In this paper, we exploit graphics sharpness rule to estimate the motion parameter for one dimensional cross-range image of low resolution radar and compensate them translational motion, Since coherent processing must not be overlong based on the rule to estimate the motion parameter that we adopt the method of super-resolution to improve the resolution, The processing experimental results of a group targets show that the proposed approach is correct and effective.