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A Time Diversity Deception Interference Suppression Method Based on Pulse Coding

A technology of deceptive jamming and time diversity, applied in the field of pulse code-based time diversity deceptive jamming suppression, can solve the problems of high-distance sidelobe, no solution, lower radar output signal-to-interference ratio and interference suppression performance, etc.

Active Publication Date: 2022-07-22
XIDIAN UNIV
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  • Summary
  • 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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  • A Time Diversity Deception Interference Suppression Method Based on Pulse Coding
  • A Time Diversity Deception Interference Suppression Method Based on Pulse Coding
  • A Time Diversity Deception Interference Suppression Method Based on Pulse Coding

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Embodiment

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

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

[0041] It should be noted that each 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 to the transmitted signal between adjacent array elements , then the transmitted signal of the mth array element is expressed as:

[0044] ;

[0045] in, represents the reference signal emitted by each array element, represents the delay difference betwee...

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Abstract

The invention discloses a time diversity deception interference suppression method based on pulse coding, which includes: determining the coupling characteristics between the space domain and the frequency domain of a time diversity array signal model; The pulse coding-based time diversity array signal model determines the transmit signal; according to the coupling characteristic, the target matched filter and the frequency band corresponding to the target signal are determined; based on the frequency band corresponding to the target signal, the target bandpass filter is determined; The target band-pass filter filters the interference signal in the echo signal, so as to realize interference suppression. The invention can distinguish each pulse signal, so as to efficiently distinguish true and false targets, and can also filter out the interference signal, so as to realize the main lobe deceptive interference suppression.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(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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