Data Fusion Methods And System Design In Multi-sensor Network

With the development of sensor technology and network technology,more and more sensors are being developed into a system to detect the network.Multi sensor network,to build a comprehensive,three-dimensional,multi-level detection system,can significantly improve the detection system of the detection range,detection dimensions,credibility and survival ability.However,because of including multiple sensors or information source,with the increase of the number of the sensors,there will be information redundancy,division,cause the system detection information is not accurate,so that the observer can not know detection system,the system efficiency.Therefore,to study how the different sensors and information source information are combined,and the related organization assessment,method to obtain accurate final results(data fusion method),has theoretical and practical significance on the development of multi sensor network system to solve multi sensor and information source system in the final information redundancy problems.This thesis is established on the reality demanding of the general aviation,which need multi sensor to detect low altitude targets.And the research results of this thesis are initially demonstrated in the general aviation application platform.In this thesis,the general aviation surveillance radar network integration management platform as a framework,from radar network technology and multi radar data fusion technology with in-depth analysis of key technology of radar network design,puts forward the design principle of radar network simulation,data fusion and evaluation,gives a preliminary design of radar network,the formation of a complete study analysis,simulation and design link,provide reference and support for the radar network under various scenarios.The main contents of this paper include:(1)The concept of radar network is introduced,and the definition of radar network is expounded.The key technologies involved in the design of radar network are discussed.(2)The study of data fusion technology of radar network,expounds the concept of radar network data fusion,data fusion level,model,data fusion structure and data fusion algorithm of data fusion from the radar network data fusion,technology research.(3)The radar network data fusion algorithm,mainly using the weighted average method,the probabilistic data fusion method,fuzzy clustering method and the neural network compensation method,and the algorithm of information fusion evaluation platform are designed,the platform design principle,system structure and communication mechanism,work flow,and the evaluation process the performance index and so on.(4)The design of radar network system are studied,analyzes the network technical characteristics and difficulties in the design of radar,establishes the radar network design principle,analyzes the technology of radar network,the design of general aviation integration management platform,the main indicators of the system are analyzed.