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Time diversity deception jamming suppression method based on pulse coding

A technology of time diversity and pulse coding, applied in radio wave measurement systems, instruments, etc., can solve problems such as high-distance side lobes, lower radar output signal-to-interference ratio and interference suppression performance, and no solution

Active Publication Date: 2022-03-15
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] For active deceptive jamming, in the prior art, the anti-jamming task of the radar system is usually carried out through the method of waveform agility, but this method will lead to higher range side lobes, thereby reducing the radar output signal-to-interference ratio and interference. Inhibition performance
In addition, in practice, it is difficult for traditional radars to counteract main lobe deceptive jamming, and there is no related solution in the prior art

Method used

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  • Time diversity deception jamming suppression method based on pulse coding
  • Time diversity deception jamming suppression method based on pulse coding
  • Time diversity deception jamming suppression method based on pulse coding

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Embodiment

[0039] See figure 1 , figure 1 It is a schematic flowchart of a time-diversity spoofed interference suppression method based on pulse coding provided by an embodiment of the present invention, which is applied to a uniform linear array (Uniform Linear Array, ULA), and the linear array includes M transmitting array elements, and the Methods include:

[0040] Step 1: Determine the coupling characteristics between the space domain and the frequency domain of the time diversity array signal model.

[0041] It should be noted that each array element in the array transmits the same waveform.

[0042] Optionally, the step 1 includes:

[0043] Step 1-1: Based on the time-diversity array signal model, introduce a delay difference between the transmitted signals between adjacent array elements , then the transmitted signal of the mth array element is expressed as:

[0044] ;

[0045] in, Indicates the reference signal emitted by each array element, Indicates the delay diffe...

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Abstract

The invention discloses a time diversity deception jamming suppression method based on pulse coding. The method comprises the following steps: determining coupling characteristics between a space domain and a frequency domain of a time diversity array signal model; acquiring a time diversity array signal model based on pulse coding, and determining a transmitting signal according to the time diversity array signal model based on pulse coding; determining a target matched filter and a frequency band corresponding to the target signal according to the coupling characteristic; determining a target band-pass filter based on a frequency band corresponding to the target signal; and filtering an interference signal in an echo signal based on the target band-pass filter to realize interference suppression. According to the invention, each pulse signal can be distinguished, so that true and false targets can be distinguished efficiently, interference signals can be filtered out, and main lobe deception interference suppression is realized.

Description

technical field [0001] The invention belongs to the technical field of radar signal processing, and in particular relates to a time-diversity deceptive interference suppression method based on pulse coding. Background technique [0002] For active deceptive jamming, in the prior art, the anti-jamming task of the radar system is usually carried out through the method of waveform agility, but this method will lead to higher range side lobes, thereby reducing the radar output signal-to-interference ratio and interference. inhibit performance. In addition, in practice, it is difficult for traditional radars to counteract main lobe deceptive jamming, and there is no related solution in the prior art. Contents of the invention [0003] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a time-diversity deceptive interference suppression method based on pulse coding. The technical problem to be solved in the present inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/292
CPCG01S7/2923G01S7/36
Inventor 王华柯曾国强全英汇朱圣棋高宇翔耿强
Owner XIDIAN UNIV
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