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MIMO radar orthogonal waveform design algorithm based on ecological niche genetic algorithm

A technology of orthogonal waveform and genetic algorithm, applied in the field of MIMO radar orthogonal waveform design algorithm, can solve problems such as low efficiency, poor search ability, and difficult optimal preservation strategy

Active Publication Date: 2020-10-27
QUANZHOU INST OF INFORMATION ENG
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Problems solved by technology

[0004] For overcoming above-mentioned deficiency, the purpose of the present invention is to provide a kind of MIMO radar orthogonal waveform design algorithm based on Niche Genetic Algorithm to this field, makes it solve that existing algorithm is difficult to realize optimal preservation strategy, overall search ability is not good enough, Premature convergence and low efficiency technical problems

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  • MIMO radar orthogonal waveform design algorithm based on ecological niche genetic algorithm
  • MIMO radar orthogonal waveform design algorithm based on ecological niche genetic algorithm
  • MIMO radar orthogonal waveform design algorithm based on ecological niche genetic algorithm

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Embodiment Construction

[0081] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0082] Realize the concrete steps of the MIMO radar quadrature waveform design algorithm based on niche genetic algorithm of the present invention:

[0083] 1. Orthogonal waveform design:

[0084] Frequency encoding and phase encoding are two encoding methods for MIMO radar quadrature waveforms. The present invention focuses on quadrature phase encoded signals. Among them, waveform design can be divided into partial correlation waveform design and orthogonal waveform design according to signal correlation. Quadrature waveform design is phase encoding in design. Design the phase code by M sequences S with code length N 1 (t),S 2 (t),S 3 (t),S 4 (t),S 5 (t)...S M-1 (t),S M (t) composition, can be expressed as:

[0085]

[0086] Where: φ is the phase matrix of S, m is the number of phases, and the MIMO radar quadrature signal S l Th...

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Abstract

The invention belongs to the field of MIMO radar waveform optimization design, and relates to an MIMO radar orthogonal waveform design algorithm based on an ecological niche genetic algorithm. According to the invention, autocorrelation sidelobe power and cross-correlation peak power are used as performance indexes; a signal design optimization function is established; the optimization algorithm based on the niche genetic algorithm is provided and applied to MIMO radar orthogonal waveform phase encoding design, the algorithm makes full use of the overall search ability of the genetic algorithmand the ability of the niche genetic algorithm to solve multiple optimal solutions, and the convergence rate of the algorithm is increased. Simulation experiments show that compared with a traditional genetic algorithm and a simulated annealing algorithm, the algorithm has better optimization search capacity, is suitable for optimization design calculation of phase encoding problems, and is goodin experiment effect and high in efficiency.

Description

technical field [0001] The invention belongs to the field of MIMO radar waveform optimization design, and is a MIMO radar orthogonal waveform design algorithm based on a niche genetic algorithm. Background technique [0002] The MIMO radar integrates a larger amount of input information while distinguishing a larger amount of output information, thereby improving user transmission quality. The radar can transmit two mutually orthogonal signals, and the space coverage capability is strong. [0003] Whether or not the good orthogonal performance of the transmitted signal can be maintained will affect the processing of the MIMO radar echo signal. Therefore, the optimal design of the transmitted signal of the MIMO radar should be carried out. The optimal design of the transmitted waveform is an important aspect of MIMO radar research. The existing MIMO radar quadrature waveform design algorithm still has the disadvantages of difficulty in realizing the optimal preservation stra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/27G06N3/12G01S7/28
CPCG06F30/27G06N3/126G01S7/28G01S7/2813
Inventor 裴炳南张豪生裴腾达
Owner QUANZHOU INST OF INFORMATION ENG
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