Study on Precessional Target’s Dimension Estimation Based on HRRPs
基于一维像序列的进动目标尺寸估计研究

Estimating targets’ dimension using High Resolution Range Profile (HRRP) is an important means of character extraction and target recognition of ballistic missile mid-course defense radars. In this paper, a new estimation method of middle-course ballistic missiles’ dimension using multiple HRRPs under the condition of precession is presented. The function of the target’s HRRP length and the target’s real dimension and precession parameters is derived, and the measurement model of HRRP length is constructed, based on which a maximal likelihood estimation method is adopted to realize the estimation of the target’s dimension. Finally, the simulation results of dimension estimation based on both simulation data and measurement data of one real warhead are given, which validates the validity of the method.