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Synthetic aperture radar interference method based on frequency-controlled array antenna

A technology of synthetic aperture radar and frequency control array, which is applied in the direction of radio wave reflection/reradiation, radio wave measurement system, instrument, etc., and can solve the problem of high transmission power of jammers

Inactive Publication Date: 2019-06-21
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

Suppressive interference mainly uses Gaussian white noise to generate interference, and the signal is easy to obtain, but requires a relatively large transmission power of the jammer

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  • Synthetic aperture radar interference method based on frequency-controlled array antenna
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  • Synthetic aperture radar interference method based on frequency-controlled array antenna

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Embodiment Construction

[0056] It should be noted that, in the case of no conflict, the specific implementation methods, examples and features in the present application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and in conjunction with the following contents.

[0057] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the specific embodiments of the present invention and the examples will be clearly and completely described below in conjunction with the accompanying drawings in the specific embodiments of the present invention and the examples. , the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the specific implementation modes and examples in the present invention, all other implementation modes and examples obtained by persons of ordinary skill in the art without mak...

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Abstract

The invention relates to a radar interference confrontation technology, and especially relates to a synthetic aperture radar interference technology. The invention discloses a synthetic aperture radarinterference method based on frequency-controlled array antenna. The method includes the following main steps: a. a frequency-controlled array antenna model and a synthetic aperture radar interference model are established; an antenna model of a frequency-controlled array is a linear array; b. intermediate frequency sampling and storage are performed on a frequency-controlled array signal received by a synthetic aperture radar; and c. distance Doppler processing is performed on a received frequency-controlled interference signal to obtain a position of the frequency-controlled array antenna.Beneficial effects of the method are that: interference can be generated to a synthetic aperture radar imaging system using a distance Doppler (RD) imaging algorithm and a chirp scaling (CS) imaging algorithm, and multiple false targets are generated; and the distance between the false targets and the number of the false targets are related to frequency offset and the number of array elements between frequency-controlled array antenna elements. The method is very suitable for interference in an airborne synthetic aperture radar imaging system.

Description

technical field [0001] The present invention relates to radar jamming countermeasure technology, in particular to synthetic aperture radar jamming technology, in particular to the technology of using frequency control array antenna to jam synthetic aperture radar imaging system, so that multiple false targets or false scenes appear. Background technique [0002] Synthetic Aperture Radar (SAR) is playing an increasingly important role in the military field because of its advantages of all-weather, all-time, long-distance, wide observation band and high resolution. [0003] Airborne SAR is a radar device that uses aircraft or satellites as vehicles. At present, the electronic jamming and anti-jamming of airborne SAR has become a research hotspot in the field of SAR and electronic countermeasures. [0004] There are two main types of jamming to airborne SAR: suppression and deception. Suppressive interference mainly uses Gaussian white noise to generate interference, and the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/90G01S7/38
Inventor 张顺生汪辉王文钦林洋黄榜
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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