卫星天线过顶盲区时机分析  

Divergence opportunity analysis on zenith-passing blind zone of satellite antenna

作　　者：晁宁 罗晓英 杨新龙 

机构地区：[1]空间电子信息技术研究院,陕西西安710100 [2]西安派瑞功率半导体有限公司,陕西西安710077

出　　处：《现代电子技术》2018年第1期13-16,共4页Modern Electronics Technique

基　　金：国家自然科学基金(11290154)~~

摘　　要：分析直角坐标框架结构平台和极坐标框架平台结构星载天线在各自盲区状态区域附近的发散问题。通过建立的天线过顶盲区发散模型,计算机械天线盲区时第一级转动单元转角的发散时机和发散程度以及对波束锥角的影响。确定不同波束锥角误差情况下不同发散范围对应的单轴误差分布情况,以及盲区附近第一级转动单元的位置与速度偏差对空间波束误差的影响程度。为机械式星载天线在不同通信链路需要下的工况设置提供了理论指导。The divergence near blind zone state area of satellite antenna with rectangular coordinate frame platform structure and polar coordinate frame platform structure is analyzed. The divergence model of the antenna zenith-passing blind zone was established to calculate the divergence occasion and divergence degree of the rotational angle of the first-stage rotational unit of mechanism antenna blind zone, and their influence on beam taper angle. The single-axis error distribution conditions corresponding to different divergence ranges were determined under the conditions of different beam taper angle errors, and the influence of the position and speed error of first-stage rotational unit near the blind zone on space beam error was determined also. The analysis provides a theoretical guidance for the working condition setting of satellite mechanical antenna for the requirement of variable communication links.

关 键 词：机械天线 盲区 过顶 卫星天线 发散模型 星间链路 

分 类 号：TN82-34[电子电信—信息与通信工程] V443.4[航空宇航科学与技术—飞行器设计]