A MUSIC spectrum peak search method based on a gravitation search algorithm

A gravitational search algorithm and spectral peak search technology, which is applied in the field of MUSIC spectral peak search based on the gravitational search algorithm, can solve the problems of large calculation amount, long time, complex peak search of MUSIC algorithm, etc., and achieve reduced calculation amount and good estimation effect of effect

Active Publication Date: 2018-09-11
HUBEI UNIV OF TECH
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Problems solved by technology

In the traditional MUSIC algorithm, the uniform traversal method is usually used to calculate the spectral function, that is, the traversal search is performed on the entire search space. The estimation accuracy depends on the step size between the interval points. Although this method can search all directions, when the accuracy When the requirements are high, the amount of calculation will also increase accordingly, especially for multi-dimensional and multi-objective parameter estimation, the spectral peak search of the MUSIC algorithm is more complicated and takes more time
Due to the high computational complexity of its spectral peak search part, the application of this algorithm is limited in occasions with high real-time requirements

Method used

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  • A MUSIC spectrum peak search method based on a gravitation search algorithm
  • A MUSIC spectrum peak search method based on a gravitation search algorithm
  • A MUSIC spectrum peak search method based on a gravitation search algorithm

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Embodiment Construction

[0074] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the examples. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0075] MUSIC peak search steps based on gravity search algorithm:

[0076] When the GSA algorithm is used for the spectral peak search problem of the MUSIC algorithm, the position of the particle in the population represents the solution of the estimated azimuth angle in each iteration process. The specific description of the method is as follows:

[0077] Step 1: Randomly initialize the particles in the population, each particle has its own initial position, and the position X of each particle i The expression is:

[0078]

[0079] in, and D respectively represent the posit...

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Abstract

The invention provides a MUSIC spectrum peak search method based on a gravitation search algorithm (GSA). The GSA algorithm and a MUSIC algorithm are combined by the method, the specific method is that a spatial spectrum function of the MUSIC algorithm is set as a fitness function of the GSA algorithm, excellent global searching optimization capabilities of the GSA algorithm are utilized, extremepoints of the spatial spectrum function can be rapidly found, and the spatial search for the spectrum function is finished. The simulation shows, the better estimation effect is achieved by the method, under the same experiment condition, compared with the common uniform traversal method of the MUSIC algorithm, the computational complexity is greatly reduced by the method.

Description

technical field [0001] The invention relates to the technical field of electronic communication, in particular to a MUSIC spectrum peak search method based on a gravitational search algorithm. Background technique [0002] Array signal processing is one of the key directions in the field of electronic communication. It has been widely used in radar, sonar and voice signal processing related fields. It has attracted a lot of attention recently. Its development focuses on beamforming and DOA estimation. superior. Array signal processing refers to multiple sensors at different positions forming a sensor array according to specific rules, using the sensor array to estimate the direction of arrival of the signal and processing the received signal through beamforming, with the high-resolution spectrum estimation technology With the development of DOA estimation, more and more attention has been paid to the problem of DOA estimation. [0003] Among the classical DOA estimation me...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06F2218/14
Inventor 张正文陈卓舒治宇韦琳张祺
Owner HUBEI UNIV OF TECH
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