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Method for achieving radar noise interference based on multi-order inverse Fourier convolution transform

A Fourier transform and inverse Fourier technology, which is applied in the field of radar noise interference based on multi-order inverse Fourier convolution transform, can solve the problems of inability to produce interval less than pulse width, difficult radar effective interference, etc. Randomness, the effect of improving interference efficiency

Inactive Publication Date: 2018-02-02
ARMY ENG UNIV OF PLA
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Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a method for realizing radar noise jamming based on multi-order inverse Fourier convolution transform. The high-density intra-pulse coherent false targets with intervals smaller than the pulse width are difficult to form effective interference to radars with linear frequency modulation and phase-coded intra-pulse modulation characteristics.

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  • Method for achieving radar noise interference based on multi-order inverse Fourier convolution transform
  • Method for achieving radar noise interference based on multi-order inverse Fourier convolution transform
  • Method for achieving radar noise interference based on multi-order inverse Fourier convolution transform

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[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0027] Such as image 3 As shown, the present invention realizes the method for radar noise interference based on multi-order inverse Fourier convolution transform and comprises the following steps:

[0028] (1) Obtain the Doppler radar transmission signal from the radar, which is a chirp signal s(t), such as figure 1 As shown in the previous figure, its expression is:

[0029]

[0030] wh...

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Abstract

The invention discloses a method for achieving the radar noise interference based on multi-order inverse Fourier convolution transform, and the method is characterized in that firstly, the method canachieve the covering of a target echo and also can resist side-lobe blanking for a high-density false target; secondly, it must be a pulse signal for resisting sidelobe cancellation; thirdly, the interference has the in-pulse modulation features the same as a target echo. The method gives consideration to the technical characteristics of noise interference and deception jamming, and the interference waveform generated by the method is better in coherence. The method enables an interference pulse signal to pass a detection processing system of a radar easily, also makes the most of the energy of an interference machine, and can achieve the purpose of effective interference.

Description

technical field [0001] The invention belongs to the technical field of radar electronic countermeasures, and more specifically relates to a method for realizing radar noise interference based on multi-order inverse Fourier convolution transform. Background technique [0002] Electronic countermeasures and anti-countermeasures in missile penetration will intensify with the application of new electronic technologies. Traditional jamming methods can no longer meet the needs of effective jamming of the current new system radar, and coherent jamming technology is a new idea to solve current problems. The emergence of smart noise provides a new method for coherent interference in this field. It can reproduce the radar signal, select the jamming method according to the characteristics of the radar signal to carry out smart jamming, and has a good jamming effect on the current new system radar, and it is effective against sidelobe blanking (SLB) technology and sidelobe cancellation...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/38
CPCG01S7/38
Inventor 陈运涛王义周永亮张华黄寒砚傅翰
Owner ARMY ENG UNIV OF PLA
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