The purpose of this study is to improve rescue radar system with array antennas so that it can quickly identify far-off survivors under rubble. Authors focused on time-variable elements from the respiration of a survivor awaiting rescue in order to remove clutter components, such as the rubble. Authors propose the method which identifies the location of the survivor in three dimension by using the two dimensional array antennas. The experimental results of measurement for subjects location by the proposed method agreed with the actual location of the subjects.