Three-dimensional space prediction method for electromagnetic radiation of TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) mobile communication base station environment

Abstract

The invention discloses a three-dimensional space prediction method for electromagnetic radiation of a TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) mobile communication base station environment. The key is to obtain the relationship of the electromagnetic radiation intensity S of a base station and the horizontal distance, the height difference and the azimuth angle of a base station antenna, namely the three-dimensional space distribution result of the electromagnetic radiation level of the base station, through a three-dimensional space prediction mode for the electromagnetic radiation of the TD-SCDMA mobile communication base station environment provided by the invention. According to the characteristic of the environmental influence of the electromagnetic radiation of the TD-SCDMA mobile communication base station, the invention provides a method for obtaining directivity functions f (Theta) and f (Phi) with a smaller error. The correction factor K1 of a base station launch system, the correction factor K2 of the antenna directivity function f (Theta) and the correction factor K3 of the antenna directivity function f (Phi) are added, so that the prediction precision is further increased, the practicality and the operability are increased, the site selection cost of the TD-SCDMA base station of operators is significantly reduced, and the network coverage rate is 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 TD-SCDMA 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, COST231–Hata mode, CCIR mode, COST231-WIM, standard propagation mode, and standard macro cellular mode are usually used in mobile communication network planning. Long distance; prediction range is usually greater than 100 meters; multipat...

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Problems solved by technology

[0014] (2) Occupancy

[0018] GSM adopts traditional antenna, no antenna shaping

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