多板天线“动中通”跟踪波束指向偏差研究  

Research on Tracking Beam Pointing Error for Multi-planar Antenna SOTM

作　　者：秦丽平[1] 徐贵民[2] 沈晓卫[1] 赵建勋[1] 

机构地区：[1]第二炮兵工程学院602教研室,陕西西安710025 [2]西北工业大学航海学院,陕西西安710072

出　　处：《通信技术》2008年第9期36-38,共3页Communications Technology

摘　　要："动中通"系统可以通过接收并比较卫星下传的信标信号强度来调整天线波束指向,从而实现对卫星的跟踪。文中针对多板天线"动中通"系统由于通信内容和信标信号间的频率差异造成的跟踪波束和通信波束指向偏差问题,分析了跟踪波束指向偏差产生的基本原理,提出了一种基于延时线加两级移相器相位补偿技术的误差修正方案,并通过理论推导和Matlab仿真,证实了方案的可行性和有效性。The Satellite-Communication-On-The-Move （SOTM） sysytem can adjust the antenna beam direction through comparing the receiving signal level from the satellite, so that the tracking of satellite can be realized. This paper aims at solving the problem of tracking beam and main beam pointing error in multi-planar antenna SOTM caused by different frequency between communication and tracking signal, the fundamental of tracking beam pointing error is analyzed, and a scheme based on phase-compensation technology applying delay lines and 2^nd level phase shifters is proposed. Finally, the theoretical deduction and MATLAB simulation have proved the feasibility and effectiveness through of this scheme.

关 键 词：多板天线 动中通 跟踪波束 波束指向偏差 

分 类 号：TN828[电子电信—信息与通信工程]