The Research Of Target Path-finding Algorithm For Defense Radar Simulation System

Coastal radar is an important equipment that coastal forces reconnaissance and obtain coastal intelligence,it plays an important role in coastal mission and combat.However,there are some shortcomings in using of actual radars.On one hand the late start of the research on simulation system of the coastal radar,on the other hand And our country in the field of radar simulation than foreign countries have a certain gap.So it is necessary to develop a simulation system of the coastal radar replace the radar in order to better training.The main purpose of the coastal radar is to detect and monitor the movement targets on the sea and identify the target.Among them,the data of radar target simulation track is the premise for various radar data processing research.Therefore,the design of the target path planning is the key to the simulation system of the coastal radar.The efficient and high-quality path planning algorithm is of great significance for reconnaissance and tracking of the target.This paper takes the path-finding algorithm as the core.The first step of the path-finding is to set up an appropriate environment model.Then three common path planning algorithms,dijkstra,A*and JPS+ algorithm are compared.Experiments show that the JPS+ algorithm has better pathfinding effect.Secondly,for JPS+ itself and in radar environment,we propose two improvements based on JPS+.One is to increase the weight of the heuristic function in the evaluation function,the other is to delete the redundant invalid main node.In order to make the trajectory generated by the improved JPS + algorithm closer to the actual navigational route of the ship,two methods of smoothing the trajectory of delete serrations and turning strategies are proposed.Finally,the implementation of the radar system and target path planning are introduced.The result of path planning proves that the path planning algorithm studied in this paper searches fast and can accomplish the target path finding efficiently.Finally,a smooth and efficient target path is close to the actual path of the ship.Provided a powerful help to the detection and surveillance of moving targets in the simulation system of the coastal radar and realized the high-quality training.