户外试验场归一化场地衰减的测试与验证  

Testing and Verification of Normalized Site Attenuation in Outdoor Test Sites

作　　者：徐鑫 雷震霄 陈晓薇 寇锦 范伟龙 XU Xin;LEI Zhenxiao;CHEN Xiaowei;KOU Jin;FAN Weilong(Vehicle Testing Engineering Research Institute of China,Beijing,102100 China)

机构地区：[1]中机科(北京)车辆检测工程研究院有限公司,北京102100

出　　处：《汽车知识》2023年第9期127-129,共3页Auto Know

摘　　要：该文研究了归一化场地衰减的计算原理,对某户外试验场地进行了归一化衰减测试,并对开阔试验场、电波暗室、户外试验场的归一化衰减测试结果进行了比较和分析。测试结果表明,无论是水平极化还是垂直极化,在30 MHz~1 GHz频率范围内,场地五个位置上衰减实测值与参考值之间的偏差均小于4 dB;户外试验场地的NSA测试值在大部分频点均比另外两种场地更接近于理论值。This article studies the calculation principle of normalized site attenuation,conducts normalized attenuation testing on an outdoor test site,and compares and analyzes the results of normalized attenuation testing on open test sites,anechoic chambers,and outdoor test sites.The test results indicate that the deviation between the measured attenuation values and the reference values at five locations on the site is less than 4 dB,regardless of whether it is horizontal polarization or vertical polarization,in the frequency range of 30 MHz to 1 GHz;the NSA test values of outdoor test sites are closer to the theoretical values at most frequency points than the othertwo sites.

关 键 词：户外试验场地 归一化场地衰减 骚扰特性 衰减测试 

分 类 号：U467[机械工程—车辆工程]