Impact of Phase Noise on TDMS Based Calibration for Spaceborne Multi-Beam Antennas

查看全文 作　　者：Yujie [1]Lin;Xiangyuan [1]Bu;Shuai [1]Wang;Yuan [2]Chai;Jianping [1]An

机构地区：[1]School of Information and Electronics, Beijing Institute of Technology;[2]Institute of Telecommunication Satellite, China Academy of Space Technology

出　　处：《China Communications》索引2018年第15卷第3期,共9页

基　　金：supported by the NSFC(Joint Foundation of NSFC&Fundamental Research for General Purpose Technologies)under Grant U1636125 摘　　要：For spaceborne multi-beam antennas(MBAs), time division multiplexed switching(TDMS) based calibration receiver can reduce implementation costs effectively and is very suitable for large-scale applications. However, in practice, random phase noise imposed by noisy local oscillators can cause significant performance degradation in TDMS-based calibration systems. Characterization of phase noise effects is therefore crucial for practical applications. In this paper, we analyze the impact of phase noise on the calibration performance for a MBA system. Specifically, we derive the relationship between the probability of correct amplitude/phase estimation and various practical factors involving the signal-to-noise ratio(SNR), the standard deviation of phase noise, the given tolerance region, and the length of the spreading code. The results provide high efficiency for evaluating the calibration performance of the MBAs based on TDMS, especially for precisely anticipating the impact of phase noise. Finally, the accuracy of the derived results is assessed by simulations in different scenarios. 关键词：TDMS 刻度噪音天线横梁卫星本地振荡器接收装置

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Impact of Phase Noise on TDMS Based Calibration for Spaceborne Multi-Beam Antennas

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