气象卫星地面接收站电磁环境测试与分析

分析了目前3个国家级气象卫星地面站无线电环境对数据接收的实际影响,给出了我国下一代极轨气象卫星使用的频率范围,论述了建站前和运行过程中无线电环境测试的必要性。以北京气象卫星地面接收站的电磁环境测试与分析为例,介绍了气象卫星地面站电磁环境的测试原理、计算和分析方法,内容包括:干扰源的分类,被测试区域最大干扰允许值的计算、测试系统参数、测试的过程、测试数据。对测试的数据进行了分析,并根据分析结果对干扰源进行了确定。提出了解决办法:通过无线电环境测试查找干扰源,然后通过无线电管理部门进行协调,同时在接收设备上采用一些抗干扰的技术手段。

Measurement and Analysis of Electromagnetic Environment of Meteorological Satellite Ground Station

An analysis is made of the current actual influence of electromagnetic environment on data receiving at three national meteorological satellite ground stations.The data transmission frequency of China's next generation polar orbit meteorological satellite is given.The necessity of electromagnetic environment measurement and analysis before a ground station is built and while ground station is operating is discussed.Taking the measurement and analysis of the electromagnetic environment of the Beijing meteorological satellite ground station as an example,the measuring principles and the calculation and analysis method are described,including the classification of interference sources,the calculation of allowed maximum interference,measurement system parameters,measuring procedures,and measuring data;and the measuring data is analyzed.Based on the results of the analysis,the interference sources are determined and a solution is presented,including to identify the location of interference sources through radio environment measurement,then coordinating through the administrative agency and meanwhile adopting certain interference-preventing devices on the receiving facility.