Research On The Anti-interference Performance Evaluation Criterion And Method Of Infrared Guidance System

The Infrared guidance system has become the dominating weapon in air war, within the highguidance accuracy and all-weather adapting ability，it plays an irreplaceable role in the current warand has greater threat to aircrafts. Because of the increasingly complex fighting environment, theanti-interference capability should be higher. Therefore, how to evaluate the anti-interferencecapability of Infrared guidance system precisely, objectively and quickly, has become an urgent issueat current. In this paper, the key technology of evaluation index system and methods for theanti-interference capability is studied.Firstly, the working principle of infrared guidance system is introduced, including infrared pointsource system and infrared imaging system, the infrared interference technology, and infrared decoyparticularly.Then, the evaluation index system is established, which used to evaluate the anti-interferencecapability of infrared guidance system. According to anti-interference principle and working process,the infrared guidance system can be divided into three respects: detection ability, anti-interferenceability and interception ability. The influence factor is analyzed particularly, thereinto, the detectionability depends on both of optical system performance and the background radiation characteristics oftargets, anti-interference capability relys on the recognition algorithm ability and anti-interferenceability of tracking, and the interception ability is dependent on the searching system performance andthe missile-target position information. Finally, fifteen targets will be obtained to be evaluation indexsystem of anti-interference performance in infrared guidance system.Next, the simulation evaluation is given by employing Analytic Hierarchy Process(AHP),supporting vector regression machine and ADC method. Considering the evaluation index systemestablished, the data from3-D simulation can be gathered. Then, the evaluation for the8groups datais provided by using3evaluation method respectively. According to the simulation,the evaluationresult is corresponding with the actual situation,which can illustrate the feasibility of the index systemand evaluation method have been chosen.Finally, the evaluation software system for anti-interference performance in Infrared guidancesystem is studied. In VC++6.0environment, the evaluation software system is developed by modulardesign method and on basis of MFC dialog mode. The software system has got practical application inAir-Air Missiles Institute.