Research On Track-Fusion Method Of Radar Networking And Development Of Simulation Platform

Radar networking system structure has received the attention from the researchers because of the defect of single radar system in such aspects as the reliability. Track fusion in radar networking system can comprehensively analyse tracking information from the source, reducing the uncertainty, to obtain more reliable target information than the single radar, in this way, the detectivity of the system could be improved. In this paper, the distributed radar networking fusion system is mainly in research. For each link in track fusion technology, the data pretreatment, track association and track fusion method have been carried in the theoretical study. This paper in researched provides theoretical basis for the simula t io n platform of track fusion. The main content of this thesis are as follows:(1) The thesis summarizes the basic idea of information fusion technology such as application, development, principle, function model and architecture. After introducing the advantages of radar networking system compared with single radar system, the form and design principle of it are studied.(2) Track association and track fusion in distributed radar networking system are further researched in this paper. For the phenomenon that moving targets are dense, cross, bifurcation, and other errors related to track, a double threshold based on velocity information correlation algorithm is proposed. Firstly, according to the distance informat io n, the tracks are related roughly, eliminating the remote tracks and reducing the number of the correlation and the amount of calculation. At the same time, the algorithm thinks about speed and distance information, so it can effectively deal with the special track with multiple targets. Otherwise, the method of track fusion in radar networking system is also been studied. After introducing the simple convex combination algorithm and Bar-Shalom-Cam Po algorit hm, the weighted fusion algorithm with dynamic al ocation weights is the key part, the weight distribution is a process of dynamic change, can reduce the impact of the performance degradation due to a radar, which can effectively improve the accuracy of multiple radar track fusion.(3) The paper designed the radar network simulation system, using computer technology to realize a control platform and multiple radar simulation platform, which is used to simulate the actual target. The fusion simulation platform is designed to simulate the target data fusion process and to evaluate the results in order to realize the multiple target tracking and mult itarget track fusion. The data fusion simulation platform is mainly composed by five modules, they are interface loading module, data communication module, association and fusion module, situation display module and view action module. And then test the practicabilit y and versatility of the platform designed using multiple crossed target track. And this provides a basic application platform for the future study.