A three-dimensional space prediction method for environmental electromagnetic radiation of gsm mobile communication base stations

Abstract

The invention discloses an environmental electromagnetic radiation three-dimensional prediction method of a GSM (Global System for Mobile Communication) mobile communication base station, which is characterized in that an environmental electromagnetic radiation three-dimensional prediction mode of the GSM mobile communication base station provided by the invention is used for obtaining the relation between the electromagnetic radiation strength S of the base station and the horizontal distance, the altitude difference and the azimuth of an antenna of the base station, i.e. a three-dimensional distribution result of the electromagnetic radiation level of the base station. The invention provides an acquisition method of direction functions f(theta) and f(phi) with less error in accordance with characteristics of influence of electromagnetic radiation of the GSM mobile communication base station on the environment. By increasing a correction coefficient K1 of a launching system of the base station, a correction coefficient K2 of the antenna direction function f(theta) and a correction coefficient K3 of the antenna direction function f(phi), the prediction precision of the prediction method is further improved, the practicability and the operability of the prediction method are improved, the site selection cost of the GSM base station for operators is obviously reduced, and the network coverage is obviously increased.

Description

technical field [0001] The invention belongs to the field of electromagnetic radiation environmental impact analysis, in particular to a method capable of accurately predicting the three-dimensional spatial distribution of the environmental electromagnetic radiation level of a GSM mobile communication base station. Background technique [0002] Electromagnetic radiation pollution has become the fourth largest pollution after air, water and noise pollution. Mobile communication base stations are the main source of electromagnetic radiation in cities. The public is very concerned about the electromagnetic radiation generated by base station antennas, and relevant institutions have conducted a lot of research. [0003] Okumura-hata mode, COST 231–Hata mode, CCIR mode, COST231-WIM, standard propagation mode, and standard macro cellular mode are usually used in mobile communication network planning. The farthest distance; the prediction range is usually greater than 100 meters; ...

AI Technical Summary

Problems solved by technology

For the fitting of the antenna pattern, the existing research direction is to find a function to fit the entire segment of the pattern curve. This fitting method is better for the fitting effect of the regular pattern, but due to the diversity of actual needs , many antennas have implemented measures such as zero-point filling to improve antenna performance, resulting in very irregular antenna patterns, and the method of full-section fitting will bring large errors

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