一种卫星相控阵天线在轨校正方法  

A Calibration Method for Satellite Phase Array Antenna in Orbit

作　　者：单长胜 尹曙明 王烁 黄蕾[2] SHAN Changsheng;YIN Shuming;WANG Shuo;HUANG Lei(Beijing Space Information Transmission Center,Beijing 102300,China;East China Research Institute of Electronic Engineering,Hefei 230088,China)

机构地区：[1]北京空间信息传输中心,北京102300 [2]华东电子工程研究所,安徽合肥230088

出　　处：《无线电工程》2022年第11期2035-2040,共6页Radio Engineering

摘　　要：为提升波束合成性能,提出了一种新的卫星相控阵天线(Phase Array Antenna,PAA)在轨校正方法,即多通道特性检测及补偿(Multi-channel Detection and Calibration,MUDEC)方法。MUDEC先通过通道间相关检测,完成对多路信号传输时延、幅度和相位的初始补偿;再利用最小均方误差(Minimum Mean Square Error,MMSE),实现多路信号幅度、相位的加权调整,进一步增强算法的鲁棒性;还将MUDEC与旋转矢量(Rotating-element Electric-field Vector,REV)法、酉变换编码(Unitary Transform Encoding,UTE)法和环路调整编码(Control Circuit Encoding,CCE)法等进行了比较分析,从而说明MUDEC无需增加星上硬件设备,且所需处理时间与资源相对较少,更适宜在实际中应用。Multi-channel Detection and Calibration(MUDEC)method is proposed for satellite Phase Array Antenna(PAA)in orbit to improve the beam-forming performance.Firstly,initial calibration of multi-channel signal delays,amplitudes and phases are conducted by inter-channel correlation detection.Secondly,Minimum Mean Square Error(MMSE)is used to realize the weighted adjustment of amplitudes and phases of multi-channel signals,which further enhances the robustness of the algorithm.In the end,some comparisons are made between the MUDEC,Rotating-element Electric-field Vector(REV),Unitary Transform Encoding(UTE),Control Circuit Encoding(CCE),and so on.MUDEC does not need to increase on-board hardware equipment,and the required calibration time and resources are relatively less,so it is more suitable for practical application.

关 键 词：相控阵天线 校正 多通道 

分 类 号：TN820.12[电子电信—信息与通信工程]