GIS技术在无线电波场强分析中的应用研究

无线电波场强分析在广播电视台站规划中是一项重要的工作,采用传统的电波传播模型进行场强预测时,相关的计算大多依据纸质地图用手工进行,工作强度高,结果精确性低。本文结合地理信息系统(GIS)的空间数据管理、数字地形分析等技术,构建台站与发射机实体对象,基于地理空间信息环境实现了典型电波传播场强分析模型,提高了场强计算的效率和空间位置精度,同时将人口分布信息应用到模型中,增强了台站规划的科学性;最后讨论了GIS技术在电波传播模型中进一步应用的前景。

Application of GIS in the analysis of field strength of radiowave propagation

The analysis of field strengths of radiowave propagation is very important for the station planning of radio and television.Traditional methods that employ manual work are labor-intensive,time-consuming and imprecise in predicting filed strengths.This paper investigates the application of GIS in managing spatial data and analyzing digital terrain.Object-oriented methodology is used to build the logic model of station and transmitter that improve the efficiency and reduce the redundancy of data management.The calculation of field strength is implemented in the environment of GIS based on digital elevation data,which has further application on the computation of population density.This will improve the scientific plan of radio station.Finally,the paper discusses foreground of the generic application of GIS to the propagation model of radiowave.