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Bidirectional evolution-based multiphase code design method applied to spread spectrum radar

A design method and technology of polyphase code, applied in the field of polyphase code design, can solve problems such as population diversity variation

Pending Publication Date: 2020-12-15
HUAIAN COLLEGE OF INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the number of algorithm iterations increases, the population individuals tend to be more and more homogeneous, resulting in poor population diversity.

Method used

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  • Bidirectional evolution-based multiphase code design method applied to spread spectrum radar
  • Bidirectional evolution-based multiphase code design method applied to spread spectrum radar
  • Bidirectional evolution-based multiphase code design method applied to spread spectrum radar

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Embodiment Construction

[0051] Taking the minimization problem in the optimization problem as an example, the technical solution of the present invention will be described in detail below with reference to the drawings and embodiments, but it should not be construed as a limitation on the technical solution. In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, some technical features known in the art are not described in order to avoid confusion with the present invention.

[0052] As a global optimization method, the method of the present invention takes the polyphase code design of the spread spectrum radar as the embodiment object, and improves the solution efficiency of the polyphase code design problem of the spread spectrum radar through the optimizatio...

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Abstract

The invention discloses a bidirectional evolution-based multiphase code design method applied to a spread spectrum radar, and the method comprises the steps: dividing a whole population into two sub-groups, i.e., an elite sub-group and a common sub-group, replacing elite individuals of an existing algorithm with the elite sub-group, and enabling the elite sub-group to only execute forward evolution, enabling the common subgroups to alternately execute bidirectional evolution of forward evolution and reverse evolution, completing disturbance in the elite subgroup optimization process through the common subgroups. The problem that population diversity becomes poor due to the fact that population individuals tend to be homogenized increasingly is solved.

Description

technical field [0001] The invention relates to a bidirectional evolution-based polyphase code design method applied to spread spectrum radar. Background technique [0002] The characteristic of low intercept probability is an important development direction of modern radar. When designing a radar using pulse compression techniques, one of the key issues is selecting the proper waveform. A type of radar pulse shape known as a polyphase code has received much attention. Since multi-code signals have phase jumps and time-frequency characteristics similar to FM signals, it is difficult to detect and intercept such signals. In addition, the compressed signal of polyphase code has the advantages of low sidelobe and easier digital processing, so it has become a research hotspot in recent years. The problem of polyphase code design for spread spectrum radar can be modeled as a function optimization problem. The swarm intelligence algorithm has the characteristics of self-adapta...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F30/27G06N3/00
CPCG06N3/006G06F30/20G06F30/27
Inventor 程乐常绿汪海波宋艳红卞震周跃郜继红汪燕黄丽萍
Owner HUAIAN COLLEGE OF INFORMATION TECH