GIS技术在广播电视信号干扰分析中的应用

The GIS technology with the radio and television signal interference analysis system design

针对广播电视信号监测干扰中存在干扰覆盖范围分析和影响程度分析不彻底的问题,提出一种电波传播场强模型和地理信息系统的组合应用方法,建立监测干扰空间数据库,通过边界等值线提取分析、基于地形结构特征的动态渲染分析、空间分级分析、区域覆盖多边形融合分析、多区域空间叠置分析等地理信息系统(GIS)空间分析技术,实现电波场强环境与地形环境结合及干扰程度的可视化,形成一套完整的GIS监测干扰系统,应用智能化监测干扰服务提供干扰信号压制分析,使干扰信号的影响降至最低。与传统监测干扰系统相比,GIS监测干扰系统具有更加智能的监测流程和技术,为广播电视信号干扰监测提供智能化的监测理念。

For radio and television coverage of signal monitoring interference exists in the interference and influence degree analysis the problem of incomplete,put forward a kind of radio waves propagation field model and the combination of geographic information system application method,establish monitoring spatial database,through the analysis of the boundary contour extraction,dynamic rendering based on terrain structure characteristic analysis,spatial analysis,classification analysis,the regional coverage polygon fusion superimposed area space analysis of Geographic Information System(GIS)spatial analysis technology,such as terrain environment and realize the field intensity combination and interference degree of visualization,form a complete set of GIS monitoring interference system,application of intelligent monitoring and interference service provides interference signal suppression of analysis,the influence of the jamming signal to a minimum.Compared with the traditional monitoring and interference system,GIS monitoring interference system has more intelligent monitoring process and technology of monitoring provides intelligent monitoring for radio and television signal interference.