TRP测量中球面采样方法研究  

Research on spherical sampling method of TRP measurement

作　　者：李淑颖[1] 周远国 武风波[1] LI Shuying;ZHOU Yuanguo;WU Fengbo(College of Communication and Information Engineering,Xi’an University of Science and Technology,Xi’an 710054,China)

机构地区：[1]西安科技大学通信与信息工程学院,陕西西安710054

出　　处：《中国测试》2022年第8期17-21,共5页China Measurement & Test

基　　金：陕西省自然科学基础研究计划资助项目(2020JM-515)。

摘　　要：传统使用OTA球面全空间采样计算总辐射功率(total radiation power,TRP)的方法,所需的采样点数量庞大,测试难度大且测试效率低。为减少采样点数,降低测试难度,提升测试效率,提出基于待测件方向图特征的球面采样方法。对于主信号和带内互调信号的TRP测量需求,提出基于方向图相乘的正交切面采样法,利用方向图相乘原理估算全空间信息,从而计算TRP。而对于带外杂散信号的TRP测量需求,提出基于稀疏算法的球面等密度采样法,通过N个等面积子区间的数据来估算全空间信息,从而计算TRP。实验结果表明,全空间信息估算准确,确保了测量精度,且采样点数的减少有助于降低测试难度,提升测量效率,此两种方法可广泛应用于TRP测量。The traditional method to calculate total radiation power(TRP)using OTA spherical full space sampling requires a large number of sampling points,which makes the test difficult and inefficient.In order to reduce the number of sampling points,and reduce the difficulty of test while improving the efficiency of test,a spherical sampling method based on the pattern characteristics of equipment under test is proposed.To measure TRP of the main signals and the in-band intermodulation signals,the orthogonal section sampling method based on pattern multiplication is proposed.Using the pattern multiplication principle,the whole space information is estimated,so as to calculate TRP.To measure TRP of out-of-band spurious signals,a spherical equal density sampling method based on sparse algorithm is proposed.The total spatial information is estimated based on the data of N equal area sub interval,so as to calculate TRP.The results show that the full space information estimation is accurate,which ensures the measurement accuracy,and the reduction of sampling points helps to reduce the difficulty of test and improve the measurement efficiency.These two methods can be widely used in TRP measurement.

关 键 词：TRP测量 球面全空间采样 方向图相乘 正交切面采样 稀疏算法 球面等密度采样 

分 类 号：TB9[一般工业技术—计量学]