A method for estimating the occurrence rate of high-intensity electromagnetic radiation in base stations
An electromagnetic radiation, high-intensity technology, used in electromagnetic field characteristics, electrical components, measurement of electrical variables, etc.
Active Publication Date: 2021-04-23
XIANGTAN UNIV
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In the evaluation of base station electromagnetic radiation, the evaluation of high-intensity electromagnetic radiation is particularly important, especially the estimation of the incidence of high-intensity electromagnetic radiation, which is an important aspect of measuring base station electromagnetic radiation, but currently in the published literature and patents, There is no good way to solve this yet
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[0018] The present invention will be further described below in conjunction with embodiment.
[0019] The implementation object of the present invention is a GSM base station, the downlink transmission frequency is 935.4MHz, and the measurement equipment adopts a portable spectrum analyzer (KEYSIGHT N9918A, the maximum measurement frequency is 26.5GHz) and a logarithmic periodic antenna (HyperLOG 60180, the measurement frequency range is 680MHz~18GHz) .
[0020] 1) Set the sweep bandwidth of the spectrum analyzer to zero, set the center frequency of the spectrum analyzer to 935.4MHz, and set the sweep time to 6 seconds, save the measurement results of each sweep, and then measure for one hour. Find the maximum value of the measured value within one hour, 80% of the maximum value is defined as e, and then extract the remaining measured values greater than e, these values greater than e are defined as high-intensity electromagnetic radiation values, and these high-intensity ...
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The invention discloses a method for estimating the occurrence rate of high-intensity electromagnetic radiation of a base station. The method first establishes a time series of the occurrence of high-intensity electromagnetic radiation, and then performs statistical analysis on the time series. The minimum number of times, then analyze the number of occurrences of high-intensity radiation values in 3 seconds and 10 seconds, and statistically analyze the variance of the number of occurrences of high-intensity radiation values in 3 seconds and 10 seconds, and calculate the base station high-intensity electromagnetic value within 1 second according to the variance. The shape parameter of the probability distribution of radiation occurrence, and then the probability distribution of the occurrence of high-intensity electromagnetic radiation within 1 second is obtained. The invention can very clearly analyze the probability of occurrence of high-intensity electromagnetic radiation of a base station within one second, and provides an effective method for evaluating the electromagnetic radiation of a base station.
Description
technical field [0001] This patent relates to a method for estimating the occurrence rate of high-intensity electromagnetic radiation of a base station. Background technique [0002] The number of mobile communication base stations is increasing, and they are getting closer to residential areas. The electromagnetic radiation of communication base stations has become an important factor affecting the social environment. In the electromagnetic radiation test of the base station, it is often found that the electromagnetic radiation of the base station is constantly changing, and a scientific evaluation method is very much needed to measure the electromagnetic radiation characteristics of the base station. In the evaluation of base station electromagnetic radiation, the evaluation of high-intensity electromagnetic radiation is particularly important, especially the estimation of the incidence of high-intensity electromagnetic radiation, which is an important aspect of measuring ...
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IPC IPC(8): H04W24/08H04W24/10H04B17/318G01R29/08
CPCG01R29/0857H04W24/08H04W24/10H04B17/318
Inventor 杨万春张雪邓书华卢泽斌张园彭艳芬
Owner XIANGTAN UNIV