Radar Emitter Recognition Expert System Inference Engine Of Development And Research

With the development of science and technology, radars with new system and new use are invented and the space electromagnetism environment is becoming increasingly intensive. The electronics intelligence reconnaissance is facing severe challenges. Recognition of complex radar radiation signals with computer is a very necessary work.The paper firstly analyzes the threat that the electronics intelligence reconnaissance faces and the importance of the radar intelligence reconnaissance, and then discusses the advantages and disadvantages of the usual recognition methods and the application of expert system in the radar recognition. A model of the radar radiation reasoning expert system is set up. The characteristics and the configurations of the radar radiation recognition expert system are discussed particularly. Every part of the system is analyzes. The paper studies the theory based on the radar recognition and the relationship between the radar signals technical parameters and the recognition of the radiation.The work of the expert system is to infer. In the radar radiation recognition expert system, to infer is to recognize the system or use of radars by the radar parameters. So the reasoning engine is the kernel of the radar radiation recognition expert system. The paper mainly focuses on the design of the reasoning engine of the radar radiation recognition expert system.The design of the reasoning engine includes searching strategies, reasoning direction, conflict resolution and the way of the reasoning. In the radar radiation recognition expert system, the heuristic searching method is used to select the rules. Bidirectional reasoning method what integrates the advantages of the forward and backward reasoning method is used. The conflict solution is achieved by rank the reliability of the hypothesis. There are more uncertainties in the radar intelligence reception, so there are more uncertainties in the recognition of the radar radiation and the uncertainty reasoning is used in the paper. After compare advantages and disadvantages of the uncertainty reasoning means, the certainty theory is decided. Thus the reasoning engine of the radar radiation recognition expert system is set up.