Construction method of electromagnetic spectrum map

A construction method and spectrum technology, applied in electrical components, transmission monitoring, transmission systems, etc., to achieve the effect of optimal construction accuracy, low sensor quantity and deployment requirements, and improved accuracy

Active Publication Date: 2019-11-12
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for constructing an electromagnetic spectrum map based on ordinary kriging in

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  • Construction method of electromagnetic spectrum map
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  • Construction method of electromagnetic spectrum map

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[0055] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in a variety of different ways defined and covered by the claims.

[0056] A method for constructing an electromagnetic spectrum map includes the following steps:

[0057] The first step is to select any two sensors i and j in the space, and use the negative square distance to define the spatial similarity between any two sensors i and j;

[0058] The second step is to update the attraction matrix R and the attribution matrix A through an iterative process to determine the center of the sensor class; the element r(i, j) of the attraction matrix R is used to quantify s j Suitability as s i The degree of the center of, the element a(i,j) of the attribute matrix is ​​used to represent s i Pick s j As its center suitability; where s i And s j Respectively indicate the positions of sensors i and j;

[0059] The third step...

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Abstract

The invention provides a method for constructing an electromagnetic spectrum map, which comprises the following steps of defining the spatial similarity between any two sensors by using a negative square distance, and updating an attraction degree matrix and an affiliation degree matrix through an iterative process so as to determine the clustering center of the sensors; kriging estimation groupsof different unknown points are established through classes of sensors; calculating an experimental variation function for different Kriging estimation groups, fitting theoretical variation functionsin the different Kriging estimation groups, calculating common Kriging weights of measured values of all sensing points in the Kriging estimation groups, and further calculating common Kriging estimated values; repeating the above steps for many times to estimate the observation value of any position where no sensor is arranged in the area, thereby obtaining the distribution condition of the observation value in the whole area, and achieving the construction of an electromagnetic spectrum map. According to the method, affinity propagation clustering is applied to randomly arranged sensor clustering, so that the electromagnetic spectrum map construction precision and construction efficiency are greatly improved.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular, to a method for constructing an electromagnetic spectrum map. Background technique [0002] The electromagnetic spectrum map represents the spatial distribution of electromagnetic spectrum information, including signal power, field strength, and channel gain. Taking into account the differences in the spatial distribution of electromagnetic spectrum resources, compared with traditional spectrum sensing methods, electromagnetic spectrum maps are more conducive to improving the utilization of limited spectrum resources. Therefore, in cognitive radio, electromagnetic spectrum management, signal coverage prediction and smart city and other fields have broad application prospects. [0003] Due to the influence of various factors such as cost, number of sensors, and deployment locations, only local and scattered electromagnetic spectrum monitoring data can be obtained at t...

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Application Information

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IPC IPC(8): H04B17/391H04B17/382H04B17/327
CPCH04B17/327H04B17/382H04B17/391H04B17/3911
Inventor 查淞夏海洋黄纪军刘继斌
Owner NAT UNIV OF DEFENSE TECH
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