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Phased array radar anti-interference method and device and storage medium

A phased array radar and data storage technology, applied in the field of phased array radar, can solve the problems of complex and variable combination of active interference, difficult to achieve good results, etc., to expand the detection of low-speed targets, avoid loss, and suppress the effect of interference

Active Publication Date: 2022-02-25
AIR FORCE EARLY WARNING ACADEMY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the above analysis, it can be seen that active interference is complex and changeable, and has various combinations. It is difficult and impossible to achieve good results through self-adaptation.

Method used

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  • Phased array radar anti-interference method and device and storage medium
  • Phased array radar anti-interference method and device and storage medium
  • Phased array radar anti-interference method and device and storage medium

Examples

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Embodiment 1

[0043] An embodiment of the present invention provides a phased array radar anti-jamming method, such as figure 1 shown, including the following steps:

[0044] Step 1: Use the receiving channel of the phased array radar to sample and store data;

[0045] Step 2: Use airspace compression technology to perform beamforming on the data sampled by the phased array radar, and form two data matrices of different beams at the same azimuth angle and data matrix ;in, For conventional beamforming, is adaptive beamforming;

[0046] Step 3: Use time-domain compression techniques to and Extract and sum the distance dimension to get and two data matrices;

[0047] Step 4: Use pulse compression techniques to and Perform time-domain filtering in the impulse dimension to obtain and two data matrices;

[0048] Step 5: Use frequency domain compression techniques to Perform processing to obtain data matrices of different scales , , , and ; Using frequency dom...

Embodiment 2

[0067] The present invention also provides a phased array radar anti-jamming device, such as figure 2 As shown, it includes: a receiving channel module, a space domain compression module, a time domain compression module, a pulse compression module, a frequency domain compression module, a Doppler processing module and a detection fusion module.

[0068] The receiving channel module is used to acquire multi-channel data of the phased array radar.

[0069] The space compression module is used to form two different beam data matrices of the same azimuth.

[0070] The time domain compression module is used to perform distance dimension extraction and summation on the beam data matrix.

[0071] The pulse compression module is used to perform pulse dimension time domain filtering on the extracted and compressed data matrix.

[0072] The frequency domain compression module is used to obtain data matrices of different scales through frequency domain compression, and realize groupi...

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Abstract

The invention relates to the field of phased array radars, and provides a phased array radar anti-interference method and device and a storage medium, and the method comprises the steps: sampling and storing data through a receiving channel; performing beam forming by using an airspace compression technology, and forming data matrixes of two different beams at the same azimuth angle; carrying out distance dimension extraction and summation on the data matrixes of the two different beams by adopting a time domain compression technology; performing time domain filtering of a pulse dimension by using a pulse compression technology; obtaining data matrixes of different scales by using a frequency domain compression technology; performing doppler processing on the data matrixes of different scales to obtain Doppler filtering results of different scales; respectively detecting and fusing Doppler filtering results of different scales to obtain a final detection result. According to the phased array radar anti-interference method provided by the invention, the phased array radar has the capability of simultaneously inhibiting sidelobe interference, main lobe interference and main and sidelobe mixed interference, and has the advantage of simultaneously detecting high-speed and low-speed targets.

Description

technical field [0001] The present invention relates to the field of phased array radars, and more specifically, to an anti-jamming method, device and storage medium for phased array radars. Background technique [0002] As an important equipment, radar has been widely used in various fields of national economy. Among them, the large-scale phased array radar is the country's most important weapon. Compared with the traditional small-scale phased-array radar, the large-scale phased-array radar has a larger array, more array elements, and more reconfigurable units. Under the same circumstances, it is easier to realize Multi-beam, multi-function, flexible reorganization of sub-arrays, etc., so it plays an irreplaceable role in the field of national early warning and surveillance. [0003] The traditional sky-wave over-the-horizon radar (OTHR) mainly considers the influence of passive interference such as ionospheric disturbance, lightning, and meteors. However, with the widesp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/36
CPCG01S7/36
Inventor 陈辉李槟槟刘维建张昭建周必雷倪萌钰王晓戈
Owner AIR FORCE EARLY WARNING ACADEMY
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