An Asynchronous Blinking Angle Deception Jamming Method Based on Phase Modulation Surface
A technology of phase modulation and spoofing jamming, which is applied in the field of radar jamming, can solve problems such as inflexibility and controllability, and achieve the effects of easy comprehensive control, easy processing and mass production, and real-time jamming
Active Publication Date: 2019-08-16
NAT UNIV OF DEFENSE TECH
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The disadvantage of traditional passive devices is that they are not flexible and controllable. Once the production and processing are completed, it is difficult to change and adjust according to different test scenarios and generation requirements. This brings great limitations to its application, so there is currently no relevant The device can realize passive flicker interference
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[0052] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0053] The applicable object of the present invention is a radar adopting a monopulse angle tracking system. The method and device proposed by the present invention will be further explained below in conjunction with the accompanying drawings, taking the X-band radar system as an example.
[0054] Assume that the transmitted signal of the radar to be jammed has a center frequency of f c =10GHz (λ=3.0cm) chirp signal; bandwidth BW=10MHz; pulse width T p =10us, PRI is 250us; the 3dB beam width of the antenna is 1.2°; the radar conducts an angle measurement every 1s, and each measurement accumulates 32 pulses; the vertical distance between the target and the receiver is R=5000m, the pitch angle α=30°, At this time, the objects within 363m on the ground are all in the same radar beam, assuming that the target is exactly in the c...
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The invention relates to a phase modulation surface-based asynchronous flicker angle deception jamming method. The method comprises the following steps of 1, determining relevant hard parameters related to phase modulation surfaces according to the frequency, the bandwidth and other parameters of a to-be-confronted radar; 2, determining relevant soft parameters related to the phase modulation surfaces according to the frequency, the bandwidth and other parameters of the to-be-confronted radar; 3, designing the relevant parameters of the phase modulation surfaces according to asynchronous anglescintillation signals. The method is simple in structure, and can be realized by two phase modulation surfaces. Meanwhile, the method has the advantages of easy processing and manufacturing, easy batch production, good expandability, fast reaction speed, no signal delay of active signal generators, good interference instantaneity, no exposure, and the like. Due to the fact that passive devices are adopted, signals are not radiated themselves. Therefore, the signals cannot be reconnoitered by the opposite side. The control is convenient, and the spectral characteristics of echo signals can beeffectively regulated and controlled through the control of phase modulation surfaces. Therefore, the comprehensive control is facilitated. The time relation generated by flicker signals does not needto be strictly controlled, and the system is simple in structure.
Description
technical field [0001] The invention belongs to the field of radar jamming, and in particular relates to radar passive angle deception jamming technology. Furthermore, for the monopulse radar angle measurement and tracking system, an asynchronous scintillation angle deception jamming method based on phase modulation surface is proposed, which is used to divert the radar's angle measurement system to the target and protect important military targets. Background technique [0002] Monopulse technology is to set four biased feed horns on the top, bottom, left and right of the antenna axis, and extract the pitch and azimuth angle information from one pulse at the same time. This angle measurement method is not only naturally resistant to single-point source angle spoofing Jamming ability, and the angle measurement accuracy of point targets (no corner flicker phenomenon) is as high as 0.02 mil. With the rapid development of precision guided weapons, monopulse detection technolog...
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IPC IPC(8): G01S7/38
CPCG01S7/38
Inventor 冯德军张然徐乐涛王俊杰顾照宇潘小义解东
Owner NAT UNIV OF DEFENSE TECH