| In recent years,computer technology develops rapidly,meanwhile the application of sensor technology is becoming more and more widely,especially in the modern battlefield.A wide range of sensor application makes requirements of the processing for integrated information increasingly intensely,in order to be able to deal with the obtained information from the various types of sensors timely and accurately,multiple sensor information fusion system emerges.Situation assessment is an important research direction in the field of information fusion,it is a combination of the data fusion method,knowledge representation and intelligent algorithm,is a multi-level view of the battlefield.With the development of science and technology,situation assessment techniques can not only be applied to military battlefield,but also in the network,transportation and other fields widely.On the battlefield,the accurate and timely reflection of the battlefield situation,was a key factor to decide the success of combat.Not only can situation assessment technology response the battlefield situation real-time,but also reduce the numbers of targets the commander will focus in a certain extent,and be convenient for commander to make decisions timely.Therefore,the study of situation assessment technique has become a hot research topic.The amounts of information in a battlefield is vast,these factors,such as the enemy electronic interference,the enemy cheating and sensor performance,makes the battlefield information be full of uncertainty and complexity.And situation assessment technique needs consider many factors,such as social background,deployment,environmental factors,etc.,thus makes the situation assessment technology has become a difficulty.In this paper,according to the function of situation assessment model,the research dose in the situation assessment of the targets under certain circumstances,on the basis of the target group and the expert system on situation reasoning,designs a kind of situation assessment system,concrete research content is as follows:(1)The development in recent years of situation assessment is analyzed,and explains in detail the situation assessment three levels model: situation detection,situation understanding and situation forecast,and the problem of target groups in situation assessment.(2)The situation assessment of the commonly used technologies in recent years are analyzed,and the Bayesian Network technique,expert system and D-S evidence theory are analyzed,and explains the way they are used in situation by some examples.(3)The situation assessment system was designed and implemented on Qt,and the five modules the system of are introduced: master module,initialization module,data management module,the situation assessment module and display module.Among them,in the situation assessment module,the target grouping algorithm used in the system was introduced,the target grouping algorithm is based on target attribute similarity,and then according to the expert system,knowledge rules on production rules structure.Finally,a set of examples to verify this system of three situations is done,and achieved the desired results of situation assessment. |
