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A Multi-domain Joint Anti-jamming Method Based on Subarray Dimensionality Reduction and Constraints

A sub-array and dimensionality reduction technology, applied in the field of multi-domain joint anti-jamming based on sub-array dimensionality reduction band constraints, can solve problems such as limited algorithm application

Active Publication Date: 2020-11-17
CHENGDUSCEON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even when only pure airspace is used for anti-interference processing, the application of the algorithm will be limited as the number of array elements increases

Method used

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  • A Multi-domain Joint Anti-jamming Method Based on Subarray Dimensionality Reduction and Constraints
  • A Multi-domain Joint Anti-jamming Method Based on Subarray Dimensionality Reduction and Constraints
  • A Multi-domain Joint Anti-jamming Method Based on Subarray Dimensionality Reduction and Constraints

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Embodiment 1

[0067] Example 1, see Figure 1-Figure 4 :

[0068] The concrete implementation flowchart of method among the present invention, see figure 1 shown.

[0069] from figure 1 It can be seen from the flow chart of the technical solution that due to the use of sub-array dimensionality reduction processing, it is also necessary to compensate for phase and amplitude differences between array elements. Phase compensation is realized through signal preprocessing, and the phase compensation is to obtain the precise pointing of the sub-array, so that a higher gain of the sub-array can be obtained. Therefore, in the design, it is necessary to accurately compensate the phase difference between the channels, so that the phase difference between the sub-arrays after the array elements are synthesized can be reduced, thereby reducing the beam pointing error. Amplitude compensation is obtained by finding the gain of the antenna pattern, so it is necessary to calculate the angle between t...

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Abstract

The invention discloses a multi-domain joint anti-interference method based on subarray dimension reduction band constraints. The method comprises the steps of generating a subarray synthesis direction vector according to a target signal direction; preprocessing the received array element signals; generating a sub-array signal based on the preprocessed array element signal and the direction vectorsynthesized by the sub-arrays; and adopting an anti-interference algorithm to perform operation on the sub-array signals, so that an anti-interference weight with constraint pointing can be generated. According to the method, dimension reduction processing is carried out in the airspace, and array element level is adopted to carry out subarray synthesis, so that the purpose of carrying out dimension reduction processing on the spatial dimension is achieved; the space-time joint processing matrix dimension is further reduced; the difficulty of algorithm engineering application is reduced; andthe design of the algorithm based on the FPGA can be applied.

Description

technical field [0001] The invention relates to the field of communication signal processing, in particular to a multi-domain joint anti-jamming method based on subarray dimension reduction and constraints. Background technique [0002] With the rapid development of my country's navigation industry, my country is also vigorously researching adaptive array anti-jamming technology in recent years. Faced with a complex electromagnetic environment, any single anti-jamming technology is already insufficient. Time-domain and frequency-domain filtering cannot resist broadband interference. Although air-domain filtering has a good ability to suppress broadband signals, due to the limited number of array antennas, The number of interferences that can be suppressed is limited. For this reason, the anti-interference technology of multi-domain joint processing is adopted to give full play to the advantages of various methods and improve the anti-interference performance of the equipmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/06H04B7/08
CPCH04B7/0854H04B7/0891H04L1/06H04L1/0631
Inventor 佟力王晓洪谢伟唐明张涛李富生钟勇余湋吴仡
Owner CHENGDUSCEON TECH