Research On Target Identificaion In Midcourse Of Ballistic Missile

If ballistic missiles is the sky sword, missile defense system is the invisible shield covered on top of vast landmass.Research on ballistic missile defense system is of great significance. It’s important to break the international hegemonism, safeguard national security, and maintain the peaceful of the situation.In this thesis, we set the ballistic missile defense system as the main background, focused on the target’s radar cross section (RCS), the scattering centers and target high-resolution range profile (HRRP), and analysis the main factors of the target RCS and HRRP. Some simulation results are given.Firstly, we describe the purpose and significance of the research, summarizes the research status at home and abroad. We illustrate the necessity and urgency of the ballistic missile defense system, summarize the parameters of the ballistic missile, flight phases, penetration means of the attacking side, and according to the motion characteristics of the missile, the characteristics of ballistic and the identification method of midcourse for the defending side.Secondly, given the definition of RCS and summarizes the forecasts and the method of calculation. We discuss the main factors to affect the RCS, and do simulation on the influencing factors of RCS derived from the radar frequency and perspective. We start from the concept of scattering centers, take cone target for example, study on types of scattering centers on the contribution of HRRP. Given the range profile model of the multi-scattering centers. To take the Step-Frequency Modulation as example, we discuss range ambiguity, speed sensitivity and the attitude sensitivity of HRRP, given the result of simulation experiment.