CN108391282B - Method for estimating high-intensity electromagnetic radiation incidence of base station - Google Patents

Method for estimating high-intensity electromagnetic radiation incidence of base station Download PDF

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CN108391282B
CN108391282B CN201810158691.6A CN201810158691A CN108391282B CN 108391282 B CN108391282 B CN 108391282B CN 201810158691 A CN201810158691 A CN 201810158691A CN 108391282 B CN108391282 B CN 108391282B
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electromagnetic radiation
intensity electromagnetic
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base station
intensity
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CN108391282A (en
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杨万春
张雪
邓书华
卢泽斌
张园
彭艳芬
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Xiangtan University
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
    • G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
    • G01R29/0857—Dosimetry, i.e. measuring the time integral of radiation intensity; Level warning devices for personal safety use
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

The invention discloses a method for estimating the occurrence rate of high-intensity electromagnetic radiation of a base station, which comprises the steps of establishing a time sequence of occurrence of the high-intensity electromagnetic radiation, then carrying out statistical analysis on the time sequence, firstly analyzing the minimum occurrence times of the high-intensity radiation value within a time period of 1 second, then analyzing the occurrence times of the high-intensity radiation value within a time period of 3 seconds and 10 seconds, carrying out statistical analysis on the variance of the occurrence times of the high-intensity radiation value within the time period of 3 seconds and 10 seconds, calculating the shape parameter of the occurrence probability distribution of the high-intensity electromagnetic radiation of the base station within 1 second according to the variance, and then obtaining the occurrence probability distribution of the high-intensity electromagnetic radiation within 1 second. The method can clearly analyze the probability of the occurrence times of the high-intensity electromagnetic radiation of the base station in one second, and provides an effective method for evaluating the electromagnetic radiation of the base station.

Description

Method for estimating high-intensity electromagnetic radiation incidence of base station
Technical Field
The patent relates to a method for estimating the incidence of high-intensity electromagnetic radiation of a base station.
Background
The number of mobile communication base stations is increasing and the mobile communication base stations are closer to residential areas, and the electromagnetic radiation of the communication base stations becomes an important factor influencing social environment. In the electromagnetic radiation test of the base station, people often find that the electromagnetic radiation of the base station changes constantly, and a scientific evaluation method is very needed to measure the electromagnetic radiation characteristic of the base station. In the evaluation of electromagnetic radiation of a base station, the evaluation of high-intensity electromagnetic radiation value is particularly important, and especially the estimation of the incidence rate of the high-intensity electromagnetic radiation is an important aspect for measuring the electromagnetic radiation of the base station, but no good method for solving the problem exists in the published documents and patents at present.
Disclosure of Invention
In order to solve the above technical problem, the present invention provides a method for estimating the occurrence rate of high-intensity electromagnetic radiation of a base station.
The technical scheme for solving the technical problems comprises the following steps:
1) setting the sweep frequency bandwidth of a spectrum analyzer to be zero, setting the center frequency of the spectrum analyzer to be the emission center frequency of a communication base station to be detected, setting sweep time to be 6 seconds, storing the measurement result of each scanning, measuring for one hour, firstly finding out the maximum value in the measurement value within one hour, defining 80% of the maximum value as e, then extracting the rest measurement values larger than e, defining the values larger than e as high-intensity electromagnetic radiation values, establishing a time sequence x (t) of the high-intensity electromagnetic radiation values, wherein t is a time axis, when the high-intensity electromagnetic radiation values appear at a certain time t, x (t) is equal to 1, otherwise, equal to 0;
2) carrying out statistical analysis on the x (t) time sequence obtained in the step 1), and firstly obtaining the minimum number n of times of the occurrence of the high-intensity electromagnetic radiation value in a 1-second time periodmin(ii) a Establishing a time period of 3 seconds to obtain the occurrence frequency of the high-intensity electromagnetic radiation value in every 3 second time period on a time axis
Figure GDA0002885019170000011
k is 1,2,3, …,1200, k representing the k-th 3-second period on the time axis; then establishing a time period of 10 seconds to obtain the occurrence times of the high-intensity electromagnetic radiation value in each 10 second time period on the time axis
Figure GDA0002885019170000012
k is 1,2,3, …,360, k representing the k-th 10-second period on the time axis;
3) in the statistical step 2)
Figure GDA0002885019170000013
Variance σ of3And
Figure GDA0002885019170000014
variance σ of10；
4) Calculating the shape parameter H of the occurrence probability distribution of the high-intensity electromagnetic radiation of the base station within 1 second according to the variance obtained in the step 3):
Figure GDA0002885019170000015
5) obtaining the occurrence probability distribution f (n) of the high-intensity electromagnetic radiation within 1 second according to the shape parameter H obtained in the step 4):
Figure GDA0002885019170000016
in the above formula (2), n is the number of times of occurrence of high-intensity electromagnetic radiation within 1 second, and f (n) is the probability that the number of times of occurrence of high-intensity electromagnetic radiation of the base station within 1 second is n.
In the step 3), the variance thereof is statistically:
Figure GDA0002885019170000021
Figure GDA0002885019170000022
in the above formula (3)
Figure GDA0002885019170000023
Is composed of
Figure GDA0002885019170000024
Average value of (4) above
Figure GDA0002885019170000025
Is composed of
Figure GDA0002885019170000026
Average value of (a).
The invention has the beneficial effects that: the method calculates the occurrence times and variance of the high-intensity electromagnetic radiation in different time periods by carrying out statistical analysis on the measured values, obtains the probability distribution of the occurrence rate of the high-intensity electromagnetic radiation through the variance in different time periods, and has great reference value for base station construction and environmental protection.
Detailed Description
The present invention will be further described with reference to the following examples.
The implementation object of the invention is 1 GSM base station, the downlink transmission frequency is 935.4MHz, the measuring equipment adopts a portable spectrum analyzer (KEYSIGHT N9918A, measuring maximum frequency 26.5GHz) and a log periodic antenna (HyperLOG 60180, measuring frequency range 680 MHz-18 GHz).
1) Setting the sweep frequency bandwidth of a spectrum analyzer to be zero, setting the center frequency of the spectrum analyzer to be 935.4MHz, setting the sweep time to be 6 seconds, storing the measurement result of each scanning, measuring for one hour, firstly finding out the maximum value in the measurement values within one hour, defining 80% of the maximum value as e, then extracting the rest measurement values which are larger than e, defining the values which are larger than e as high-intensity electromagnetic radiation values, establishing a time sequence x (t) in which the high-intensity electromagnetic radiation values appear, wherein t is a time axis, when the high-intensity electromagnetic radiation values appear at a certain time t, x (t) is equal to 1, otherwise, equal to 0;
2) carrying out statistical analysis on the x (t) time sequence obtained in the step 1), and firstly obtaining the minimum number n of times of the occurrence of the high-intensity electromagnetic radiation value in a 1-second time periodmin3; establishing a time period of 3 seconds to obtain the occurrence frequency of the high-intensity electromagnetic radiation value in every 3 second time period on a time axis
Figure GDA0002885019170000027
k is 1,2,3, …,1200, k representing the k-th 3-second period on the time axis; then establishing a time period of 10 seconds to obtain the occurrence times of the high-intensity electromagnetic radiation value in each 10 second time period on the time axis
Figure GDA0002885019170000028
k is 1,2,3, …,360, k representing the k-th 10-second period on the time axis;
3) in the statistical step 2)
Figure GDA0002885019170000029
Variance σ of3And
Figure GDA00028850191700000210
variance σ of10；
4) Calculating a shape parameter H of the occurrence probability distribution of the high-intensity electromagnetic radiation of the base station within 1 second according to the variance obtained in the step 3);
5) obtaining the shape parameter H according to the step 4), and obtaining the occurrence probability distribution f (n) of the high-intensity electromagnetic radiation within 1 second, wherein n is the occurrence frequency of the high-intensity electromagnetic radiation within 1 second.
In the step 3), obtained according to the step 2
Figure GDA00028850191700000211
k is 1,2,3, …,1200, first obtained
Figure GDA00028850191700000212
Is an average value of 8, and,
Figure GDA00028850191700000213
k is 1,2,3, …,360, to yield
Figure GDA00028850191700000214
Has a mean value of 15 and a variance of:
Figure GDA0002885019170000031
Figure GDA0002885019170000032
in the step 4), the shape parameter H of the base station high-intensity electromagnetic radiation occurrence probability distribution within 1 second:
Figure GDA0002885019170000033
in the step 5), the probability distribution of the occurrence of the high-intensity electromagnetic radiation of the base station in 1 second is
Figure GDA0002885019170000034
In the above formula, n is the occurrence frequency of the high-intensity electromagnetic radiation within 1 second, and f (n) is the probability that the occurrence frequency of the high-intensity electromagnetic radiation of the base station within 1 second is n. Through the f (n), the probability of the occurrence frequency of the high-intensity electromagnetic radiation of the base station in one second can be clearly analyzed, and an effective method is provided for the evaluation of the electromagnetic radiation of the base station.

Claims (2)

1. A method for estimating the incidence of high-intensity electromagnetic radiation of a base station is characterized by comprising the following steps:
1) setting the sweep frequency bandwidth of a spectrum analyzer to be zero, setting the center frequency of the spectrum analyzer to be the emission center frequency of a communication base station to be detected, setting sweep time to be 6 seconds, storing the measurement result of each scanning, measuring for one hour, firstly finding out the maximum value in the measurement value within one hour, defining 80% of the maximum value as e, then extracting the rest measurement values larger than e, defining the values larger than e as high-intensity electromagnetic radiation values, establishing a time sequence x (t) of the high-intensity electromagnetic radiation values, wherein t is a time axis, when the high-intensity electromagnetic radiation values appear at a certain time t, x (t) is equal to 1, otherwise, equal to 0;
2) carrying out statistical analysis on the x (t) time sequence obtained in the step 1), and firstly obtaining the minimum number n of times of the occurrence of the high-intensity electromagnetic radiation value in a 1-second time periodmin(ii) a Establishing a time period of 3 seconds to obtain the occurrence frequency of the high-intensity electromagnetic radiation value in every 3 second time period on a time axis
Figure FDA0002885019160000011
k denotes a k-th 3-second period on the time axis; then establishing a time period of 10 seconds to obtain the occurrence times of the high-intensity electromagnetic radiation value in each 10 second time period on the time axis
Figure FDA0002885019160000012
k denotes a k-th 10-second period on the time axis;
3) in the statistical step 2)
Figure FDA0002885019160000013
Variance σ of3And
Figure FDA0002885019160000014
variance σ of10；
4) Calculating the shape parameter H of the occurrence probability distribution of the high-intensity electromagnetic radiation of the base station within 1 second according to the variance obtained in the step 3):
Figure FDA0002885019160000015
σ3and σ10Is the variance;
5) obtaining the occurrence probability distribution f (n) of the high-intensity electromagnetic radiation within 1 second according to the shape parameter H obtained in the step 4):
Figure FDA0002885019160000016
in the above formula (2), n is the number of times of occurrence of high-intensity electromagnetic radiation within 1 second, and f (n) is the probability that the number of times of occurrence of high-intensity electromagnetic radiation of the base station within 1 second is n.
2. The method according to claim 1, wherein in step 3), the variance statistic is:
Figure FDA0002885019160000017
Figure FDA0002885019160000018
in the above formula (3)
Figure FDA0002885019160000019
Is composed of
Figure FDA00028850191600000110
Average value of (4) above
Figure FDA00028850191600000111
Is composed of
Figure FDA00028850191600000112
Average value of (a).
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004095790A1 (en) * 2003-03-28 2004-11-04 University Of Maryland Method and system for determining user location in a wireless communication network
CN104980948A (en) * 2015-05-11 2015-10-14 广东美晨通讯有限公司 Electromagnetic radiation statistical method, system thereof and mobile terminal
CN105246093A (en) * 2015-09-29 2016-01-13 中国联合网络通信集团有限公司 Method and device for judging whether electromagnetic radiation of base station exceeds standard

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004095790A1 (en) * 2003-03-28 2004-11-04 University Of Maryland Method and system for determining user location in a wireless communication network
CN104980948A (en) * 2015-05-11 2015-10-14 广东美晨通讯有限公司 Electromagnetic radiation statistical method, system thereof and mobile terminal
CN105246093A (en) * 2015-09-29 2016-01-13 中国联合网络通信集团有限公司 Method and device for judging whether electromagnetic radiation of base station exceeds standard

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Accurate Method to Estimate EM Radiation from a GSM Base Station;Qing Qing He;《Progess In Electromagnetics Research M》;20141231;全文 *
Electromagnetic radiation early warning criterion of rock burst based on statistical theory;Song Dazhao;《Mining Science and Technology》;20101231;全文 *
移动基站近距离区域电磁辐射污染分布特征;张邦俊;《中国环境科学》;20021231;全文 *

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