The analysis results showed that,follower jamming will be effective only when the position of jamming equipment is in the jamming ellipse,and raising FH rate an effective method of anti-follower jamming.

At last, a method based on Kalman filter and HOJ to antagonize active RF jamming, RGPO/RGPI jamming is introduced.

We use linear Gauss filtering in the system for observing the noise with jamming signals,thus to realize anti-jamming tracking of maneuvering target when the target dispenses jamming randomly.