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Dilution type chaff interference identification method based on polarization scattering transformation

A technology of chaff interference and recognition method, which is applied in the field of radar electronic warfare, can solve the problem of complex and variable chaff orientation distribution, and achieve the effects of small orientation distribution dependence, good recognition effect and strong application prospects

Inactive Publication Date: 2018-06-15
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

At present, the polarization identification methods for chaff interference in the public literature mainly include the use of polarization ratio, polarization angle, and polarization RCS (Radar Cross section, radar cross-section) ratio. Sensitive, mostly for some specific types of chaff distribution, and due to the influence of factors such as gravity and air turbulence, and the way the chaff is launched, the orientation distribution of the chaff is complex and variable

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  • Dilution type chaff interference identification method based on polarization scattering transformation
  • Dilution type chaff interference identification method based on polarization scattering transformation
  • Dilution type chaff interference identification method based on polarization scattering transformation

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Embodiment Construction

[0039] The invention is applicable to the identification of chaff dilution interference. figure 1 It is a brief flow chart of the present invention, and the method proposed in the present invention will be further explained below in conjunction with the accompanying drawings. Concrete steps of the present invention and effect are as follows:

[0040] Step 1: Obtain the polarization scattering matrix of the target and the chaff;

[0041] Here, the full polarization scattering simulation data is used to obtain the polarization scattering matrix data of the target and the chaff. On the one hand, the full polarization scattering matrix data of radar targets (ships and aircraft) is generated by CST STUDIO SUITE electromagnetic calculation software. The models of radar targets are shown in Fig. 3(a) and Fig. 3(b), where, e r is the unit vector of the polarization direction. fixed angle gamma s = 60°, e r Horizontal azimuth φ projected on the xoy plane sStepping in the interval...

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Abstract

The invention provides a dilution type chaff interference identification method based on polarization scattering transformation. The method includes step 1 acquiring a polarization scattering matrixof a target and a chaff; step 2 calculating the polarization scattering parameters (as shown in the description) of the target and the chaff; step 3 calculating the absolute value (as shown in the description) of the correlation between the co-polarization and the cross-polarized channel of the target and chaff; and step 4 utilizing an SVM method to realize classification and recognition of the chaff dilution type interference. The method disclosed by the invention has the advantages that the problem of diluted type chaff interference identification is researched, the chaff polarization interference is revealed from the physical scattering layer, and the method is more stable compared with a traditional chaff diluted type interference identification method, and the identification effect isbetter; the two polarization identification quantities (as shown in the description) has small orientation distribution dependence on the chaff, and the method has a very strong application prospect,and can be applied to recognition of chaff diluted type interference in actual combat such as air defense, anti-warships and reverse guide.

Description

【Technical field】 [0001] The present invention is a method for identification of diluted chaff interference based on polarization scattering transformation, which specifically relates to the identification technology of chaff interference in application scenarios such as air defense, anti-ship, and anti-missile, and furthermore, it is aimed at chaff-diluted Jamming proposes a chaff identification method based on polarization scattering transformation, which belongs to the field of radar electronic warfare. 【Background technique】 [0002] The role of precision-guided weapons in modern warfare is becoming increasingly important. It can accurately and effectively attack and destroy important military targets on the water or in the air, such as ships and aircraft. Especially in recent local wars, precision-guided weapons It has become the key to determining the victory or defeat of the war. In order to improve the survivability and combat effectiveness of important surface or a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/02G01S7/40
CPCG01S13/02G01S7/4052
Inventor 李永祯刘业民邢世其王雪松肖顺平孙豆崔刚
Owner NAT UNIV OF DEFENSE TECH
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