航天器工程2011，Vol.20Issue(5)：49-54,6.
星载天线指向精度建模与分析
Modeling and Analysis on Pointing Accuracy of Antenna in Satellite
摘要
Abstract
With the increase of the complexity of the antenna oriented mechanism and the higher requirement of mission,the improvement of the pointing accuracy has been the core of the capability improvement for satellitic antenna.With a comprehensive consideration of the errors of satellite attitude control,the errors of deployment mechanism,the errors of two-axis drive mechanism and the errors of the reflector,the transformation matrix are used to get the kinematic error equations of antenna pointing.Thus a common method of the analysis on the pointing accuracy of the antenna is obtained.Then the effect of each error is analyzed on a point-beam oriented mechanism of a satellitic antenna,and the effect of each error on the final pointing accuracy is gotten under every rotational position of the two-axis drive mechanism.The results show that the effects on the pointing accuracy of the errors of the satellite attitude control and the locking error of the deployment mechanism cannot be ignored.Therefore,in order to radically improve the pointing accuracy of the antenna,the effect of every error is necessary to take into account comprehensively.关键词
星载天线/定位机构/指向精度/建模/分析Key words
satellitic antenna/pointing mechanism/pointing accuracy/modeling/analysis分类
航空航天引用本文复制引用
潘博,张东华,史文华,林恬..星载天线指向精度建模与分析[J].航天器工程,2011,20(5):49-54,6.基金项目
国家重大科技专项工程 （）
