Data Processing Design And Implementation Based On High And Low Speed Mixed Target

Recent years,miniaturized UAVs appear more and more frequently in war conflicts as micro weapons.It is very important to use the tracking information of missiles and such UAVs by radar to guide missiles to hit targets in combat defense.Therefore,the research on highspeed and low-speed hybrid targets’ tracking is of great significance.Based on the phased array radar in UAV defense system,this thesis designs a radar data processing software based on high-speed and low-speed hybrid targets and realizes the tracking of missiles and UAVs.The main work of this thesis includes the following contents:Firstly,this thesis introduces the theoretical algorithms of radar data processing.It includes several algorithms of track initiation and data association.Then the corresponding simulation analysis of each algorithm are carried out.In order to solve the problem of poor tracking performance of high-speed and high maneuvering targets,some parameter adaptive optimization methods are proposed for the target motion model and filter model in target tracking,mainly for CT and CS models in the maneuvering model and Kalman filter in the filter model.Interacting Multiple Model algorithm is designed to adapt to more motion states.All these are to realize the tracking of high-speed projectile targets and low-speed UAV targets at the same time,and improve the tracking accuracy and stability.Through the radar data processing algorithm and the optimized target tracking algorithm,the data processing software of high-speed and low-speed hybrid targets is designed.Based on the system of phased array radar,two modes of TWS and TAS are designed for the scheduling of radar resources.Then,the speed ambiguity resolution,pitch angle measurement,point condensation,clutter suppression and azimuth smoothing in the data processing flow of the two modes are designed.All of them are all to realize the tracking of high-speed and low-speed hybrid targets.Then,the data processing software of the high-speed and low-speed hybrid targets is realized based on the design.Finally,through experiments,it is proved that the software can track the high-speed and low-speed hybrid targets,and the accuracy meets the system’s requirements.