Analyzing Probability Of Anti-radiation Missile Hitting Source Of Noise On The Ground

With the development of radar and performance of air defense weapon, the air defensesystem making up of radar , air defense missile and antiaircraft artillery has been seriouslythreatened the aircraft which carries out task in the air and the survival of missile whichattacks land. However, radar is an important part of the air defense system. As long as theradar is destroyed, the whole system will fall into the paralysis conditions.The anti-radiation missile is used for countering air defense system, which is also ablanketing weapon for hard killing ground-based radar .It uses electromagnetic wave receivedby passive monopulse seeker to guide the missile fly to the target attacked automatically.Therefore, whether the radar has capacity of countering anti-radiation missile has been theimportant proof of guaranteeing battle effectiveness and survival abilities.Noise jamming is an effective way of countering, which makes the wide band jammingsignals enter the receiver. At the same time, it makes used of differences of high frequencybranches transmission and inconsistent of performance of magnitude and phase ofintermediate frequency branches to cause angle tracking error of passive monopulse seekerincrease and tracking accuracy drop.In this paper we will first simulate the process of tracking radar signals. Throughcalculating hitting probability, we known that asymmetry in receiving branches will affectprocessing radar signals and obtaining information of angle. But the differences are inpermission scope, which will not make serious effect on attacking the radar. Then we simulatethe processing of tracking source of noise. From curve of error we can easily see the trend oftracking error increasing. The calculation result of hitting probability is consistent with thecurve of error distribution. Namely the error of angle increases, the hitting probability willreduce.