A Method for Constructing Electromagnetic Spectrum Map
A construction method and map construction technology, applied in the field of electromagnetic spectrum map construction, to achieve the effects of improving efficiency, optimizing construction accuracy, and high construction efficiency
Active Publication Date: 2021-06-25
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 interpolation based on neighbor propagation clustering, so as to solve the technical problems existing in the above-mentioned existing technologies
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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 various ways defined and covered by the claims.
[0056] A method for constructing an electromagnetic spectrum map, comprising the following steps:
[0057] In the first step, 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 attractiveness matrix R and the belongingness matrix A through an iterative process to determine the center of the sensor class; the element r(i,j) of the attractiveness matrix R is used to quantify s j Is it suitable as s i The degree of the center, the element a(i,j) of the attribution matrix is used to represent s i pick s j The degree of suitability as its center; where, s i and s j represent the positions of sensors i and j, respectiv...
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The invention provides a method for constructing an electromagnetic spectrum map, which includes the following steps: first define the spatial similarity between any two sensors with a negative square distance, and then update the attraction matrix and the belonging matrix through an iterative process to determine The center of sensor clustering; kriging estimation groups of different unknown points are formed by the sensor class, the experimental variogram is calculated for different kriging estimation groups, and the theoretical variograms in different kriging estimation groups are calculated Perform fitting, calculate the ordinary kriging weights of the measured values of each sensing point in the kriging estimation group, and then calculate the ordinary kriging estimated value; repeat the above estimation for many times to obtain the observed value at any position where no sensor is deployed in the area, In this way, the distribution of observed values in the whole region can be obtained, that is, the construction of electromagnetic spectrum map can be realized. The method of the invention applies the neighbor propagation clustering to the randomly arranged sensor clustering, thereby greatly improving the construction accuracy and construction efficiency of the electromagnetic spectrum map.
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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IPC IPC(8): H04B17/391H04B17/382H04B17/327
CPCH04B17/327H04B17/382H04B17/391H04B17/3911
Inventor查淞夏海洋黄纪军刘继斌
OwnerNAT UNIV OF DEFENSE TECH