Pulse Compression Radar Jamming Technology

Radar-jamming technology and anti-jamming technology are conflicting with each other. Most of modern radars have introduced the matching reception and related processing technology, making the traditional way to interfere the radar becomes more and more difficult.The hot research of the interference is focusing on introducing Digital Radio Frequency Memory (DRFM)for Smart noise jamming technology.Digital Radio Frequency Memory (DRFM) is widely used to store the radar signal and forward the signal.The jamming signal can be produced by it in a flexible and changeable way ,and it can both have suppressing effect and deceiving effect.This article is tracking the current research fronts, and it has a deep study about the interference pattern design based on DRFM. Then analyse the pattern result when the interference parameter is different.The work of this article includes:First, the introduction of modern radar signal processing techniques, including pulse compression, CFAR techniques, moving target indication and detection technology. Specially introduce two kinds of typical signal:LFM signal and Phase coded signal.Focusing on analyzing the anti-interference performance of two kinds of pulse compression signal: the LFM signal and the phase-coded signalSecond, have a deep study of the interference on the LFM radar. It introduces three kinds of interference patterns:the convolution noise interference, the delay forwarding interference and the frequency-shift forwarding.Then it analyses the interference effect based on power guidelines. From the simulation result we can deduce whice parameter is the most important parameter for the interference effect.Again, have the research on the space sampling forwarding jamming for the phase-coded radar. Through theoretical analysis and simulation,we can have the conclusion that this kind of interference pattern has a better jamming effect to phase-coded radar.And the duty is a important parameter when we use this kind of jamming pattern.Finally we have the valuable conclusion: if we use the noise to interfere the pulse compression radar,it's really hard to have a good jamming effect.And we can produce the jamming signal based on the DRFM,then the jamming effect will be better.So we should make sure the interference parameter is suitable to have a good interference effect.