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Radar jamming method and device as well as frequency phased array jammer

A technology of frequency control array and jammer, which is applied in the field of radar jamming, can solve the problems of unobtainable gain, unused jamming energy, and unsatisfactory radar jamming effect, etc., and achieve the effect of solving the effect of operating distance and distance resolution

Inactive Publication Date: 2017-08-11
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

Traditional suppressive jamming is to use jamming transmitters to launch high-power jamming signals, overloading the enemy's radar receiver or covering useful signals with jamming, but this kind of jamming is not very effective for the new radar system. It cannot obtain the gain of matching reception, resulting in most of the interference energy not being used. In addition, its exposed interference characteristics are easily detected by enemy radars

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  • Radar jamming method and device as well as frequency phased array jammer
  • Radar jamming method and device as well as frequency phased array jammer
  • Radar jamming method and device as well as frequency phased array jammer

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Embodiment 1

[0074] In this embodiment, the enemy radar is modeled as a pulse Doppler radar, which is designed based on the fact that the target and the interfering object have different radial velocities relative to the radar, and echo signals also have different Doppler frequencies. Its main feature is that it has strong anti-spoofing interference and anti-noise capabilities. Generally, the interference to pulse Doppler radar can be divided into suppressive interference, distance deception interference and speed deception interference. Simultaneously achieve the effects of the above three interference forms, making it more effective for pulse Doppler radar interference.

[0075] Such as image 3 Shown is the overall flow chart of the present invention. The radar signal that the present invention adopts is a chirp signal, and the time domain expression of the chirp signal is s(t)=exp{j(2πf 0 t+πk r t 2 )}, where f 0 is the carrier frequency, k r is the tuning frequency. Let the pul...

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Abstract

The invention relates to a radar jamming method and device as well as a frequency phased array jammer. In the frequency phased array jammer, a digital radio frequency memory is used as a front-end basic component to store the received enemy detection signals, forwarding jamming or smart jamming is used flexibly, and finally, an frequency phased array antenna generates jamming signals to produce false targets more than conventional jamming ones, so that detection and tracking of an enemy radar on a moving target are effectively destroyed. The method has the innovation that the novel frequency phased array is applied, the frequency phased array antenna transits jamming signals, and the jamming signals transmitted between the array elements are different in frequency, so that on the one hand, the power of the jamming signals is strengthened in an array form, and on the other hand, the transmitted jamming signals are different in frequency and thus seriously puzzle the detection of the target of the enemy radar in frequency.

Description

technical field [0001] The invention belongs to the technical field of radar jamming in electronic countermeasures, and in particular relates to a method and device for jamming radar and a frequency-controlled array jammer. Background technique [0002] Radar jamming is an important part of electronic countermeasures and an essential part of modern electronic warfare. With the increasingly complex electromagnetic environment in the battlefield space, countries all over the world are looking for the optimal solution to effectively control the electromagnetic space. With the continuous enrichment and improvement of radar theory, advanced electronic technology has been widely used in radar systems, and many new technologies such as pulse Doppler radar, pulse compression radar, phased array radar and synthetic aperture radar have appeared. institutional radar. These new system radars comprehensively use various anti-jamming technologies, which significantly reduce the effect o...

Claims

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Application Information

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IPC IPC(8): G01S7/36G01S7/38
CPCG01S7/36G01S7/38
Inventor 王文钦明靖鸥潘晔陈慧邵怀宗胡全
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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