Feature extraction using high range resolution profiles for estimating the number of target

This paper proposes a new feature extraction method for automatically estimating the number of target using high range resolution profile (HRRP). Feature of one-dimensional range profile is expected to be limited or missing due to lack of information according to the time. The proposed method considers the dynamic movements of targets depending on the radial velocity. The observed HRRP sequence is used to construct a time-range distribution matrix, then assuming diverse radial velocities reflect the number of target, the proposed method utilizes the characteristic of the gradient distribution on the time-range distribution matrix which is validated by electromagnetic computation data and dynamic simulation.