Prediction forwarding interference method based on radar pulse sample graph
A radar pulse and forwarding jamming technology, applied in the field of radar jamming, can solve the problems of false target lag, unable to produce leading jamming, and jamming signals are easily identified and eliminated, so as to improve the jamming effect.
Pending Publication Date: 2021-02-12
NAT UNIV OF DEFENSE TECH
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[0007] The purpose of the present invention is to solve the problem that the existing intermittent sampling interference method cannot produce leading interference, the false target always lags behind the real target, and the interference signal is easy to be identified and eliminated. The predictive forwarding jamming method is based on the radar pulse sample map. On the basis of intermittent sampling, the intra-pulse parameters and inter-pulse parameters are matched with the pulse sample map. Combined with the position parameters of the required false targets, the jamming parameters are calculated, predicted and Modulation and forwarding to generate multi-false target jamming with controllable leading and lagging positions
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[0030] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0031] see Figure 1-4 As shown, based on the radar pulse sample map prediction forwarding interference method, for Doppler sensitive radar signals, such as nonlinear frequency modulation, phase coding and step frequency hopping phase coding signals, etc., the present invention proposes a radar pulse sample map based The method of predicting forwarding interference, the basic specific steps are divided into the following five steps:
[0032] The first step: intermittent sampling, the jammer uses digital radio frequency mem...
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The invention discloses a prediction forwarding interference method based on a radar pulse sample diagram, which is used for solving the problems that the existing intermittent sampling interference method cannot generate leading interference, a false target always lags behind a true target, and an interference signal is easy to identify and eliminate; and the method comprises the following stepsof: 1, performing intermittent sampling; intermittently sampling a small section of radar pulse signal with high fidelity; 2, estimating intra-pulse parameters and inter-pulse parameters, and estimating the intra-pulse parameters and the inter-pulse parameters of the radar with high precision; 3, performing matching processing, namely performing related matching processing on the estimated radar intra-pulse and inter-pulse parameters and a pulse sample graph; 4, predicting preamble interference, calculating interference signal time preamble quantity, and predicting a modulated and forwarded preamble interference signal according to the matched radar pulse sample graph; and 5, performing modulation and forwarding: calculating corresponding interference parameters, and performing modulationand forwarding on the preamble interference signal to realize preamble false target interference.
Description
technical field [0001] The invention relates to the technical field of radar jamming, in particular to a method for predicting and forwarding jamming based on a radar pulse sample map. Background technique [0002] Pulse compression radar adopts pulse compression processing technology, which has good anti-jamming characteristics. Traditional radio frequency noise jamming, random pulse jamming and other non-coherent jamming effects are poor, and the jamming method is mainly based on coherent jamming. [0003] The coherent jamming of pulse compression radar is currently mainly implemented by the sampling and forwarding jamming technology, that is, the high-fidelity interception, storage, direct forwarding or modulation forwarding of radar signals by digital radio frequency memory (DRFM), generally including full pulse sampling forwarding, short There are three working modes: pulse sampling loop forwarding and intermittent sampling forwarding. Full-pulse sampling forwarding in...
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Login to View More IPC IPC(8): G01S7/38
CPCG01S7/38
Inventor 王杰贵刘方正张鹏程韩振中骆胜阳唐希雯马晓静
Owner NAT UNIV OF DEFENSE TECH