Active anti-interference method based on frequency control array phase center

Abstract

The invention discloses an active anti-interference method based on a frequency control array phase center. The method is specifically implemented according to the following steps of step 1, constructing a frequency control array radar system; step 2, deriving a phase center of the FDA radiation signal; step 3, controlling the phase center deviation by adjusting the frequency increment; and step 4, searching for the optimal frequency offset through an immune particle swarm optimization algorithm to maximize the phase center deviation. According to the method, the phase center deviation is maximum, the parameters are controllable, angle deception of an enemy jammer is achieved while the detection precision of the method is improved, and therefore active anti-interference based on the frequency control array phase center is achieved, a new thought is provided for radar countermeasure in electronic warfare, and compared with a traditional passive anti-interference method, the method has the advantages that positive defense of dominant confrontation is achieved, parameters are controllable, and the situation that interference changes and is limited to coping with is avoided.

Description

technical field [0001] The invention relates to radar signal processing technology, in particular to an active anti-jamming method based on frequency control array phase center. Background technique [0002] With the development of electronic countermeasure systems, especially the emergence and development of active jammers that can generate multi-dimensional and flexibly modulated deceptive jamming signals, they pose a serious threat to radar systems. Therefore, it is urgent to develop new radar anti-jamming technology. Due to the range-angle dependence of the beam in far-field conditions, the FDA is used to identify false targets at range. However, most of the existing technologies are passive anti-jamming to the generated false targets for a specific scene, and the passive anti-jamming is prone to passive situations that are affected by interference changes and are difficult to deal with. Contents of the invention [0003] The invention provides an active anti-jamming...

AI Technical Summary

Problems solved by technology

[0003] The invention provides an active anti-jamming method based on the phase center of the frequency control array, which solves the problem in the prior art that passive anti-jamming is performed on false targets, which is susceptible to interference changes and is difficult to deal with

Images