摘要
随着机载卫星通信的工作频段向着宽频带和多频段拓展,Ku/Ka双频段天线已成为目前发展的主流。双频段天线的指向跟踪方式直接影响卫星通信的性能,而天线系统各项误差可导致天线的指向精度、跟踪精度不能满足动载体快速、可靠与实时捕获卫星的需求,导致卫星链路中断,数据丢失,无法正常通信。因此,介绍了机载Ku/Ka双频段天线系统的组成和采用的跟踪方式,分析在不同的跟踪方式下指向误差和跟踪误差的产生因素,并提出改善误差的解决方式,估算跟踪精度。
When the operating frequency band used for airborne satellite communication is expanded to wideband and multiband,Ku/Ka dual-band antenna has become the mainstream.The pointing and tracking method of the dual-band antenna directly affects the performance of satellite communication.Various errors in the antenna system may cause pointing accuracy and tracking accuracy of the antenna to fail to meet the requirements of fast,reliable,and real-time satellite capture by moving carriers,resulting in interruption of the satellite link,data loss,and normal communication.Therefore,the composition of the Ku/Ka dual-band antenna,and the design ideas of tracking method and stabilization system of the antenna are introduced in the paper.The influence factors of pointing accuracy and tracking accuracy in different tracking mode are analyzed,and then the solution to improve the error is proposed.
作者
田捷力
李麒
邓军
顾田航
顾新
TIAN Jieli;LI Qi;DENG Jun;GU Tianhang;GU Xin(The 39th Research Institute of China Electronics Technology Group Corporation Xi’an Shaanxi 710065,China;Shaanxi Key Laboratory of Antenna and Control Technology Xi’an Shaanxi 710065,China;Unit 93216 of PLA,Beijing 100085,China;Xi’an University of Posts and Telecommunications,Xi’an Shaanxi 710121,China;Xidian University,Xi’an Shaanxi 710071,China)
出处
《通信技术》
2021年第3期745-749,共5页
Communications Technology
关键词
机载
天线
指向误差
跟踪误差
airborne
antenna
pointing error
tracking error
