基于相控阵天线的动态飞行器间高精度视线角测量方法  

A Method of High-precision Angle Measurement Between Dynamic Spacecrafts Based on Phased-array Antenna

作　　者：同钊 吴兆平 雷文英[1] 

机构地区：[1]中国空间技术研究院西安分院,西安710000

出　　处：《空间电子技术》2017年第6期79-84,88,共7页Space Electronic Technology

摘　　要：针对交会对接场景中飞行器间的视线角测量问题,该文提出了一种基于相控阵天线的角度测量方法,该方法首先利用Taylor和Bayliss窗函数形成角误差鉴别信号,并对鉴角曲线进行非线性多项式拟合,然后采用自适应角跟踪环路滤波,在测角流程中,将和差波束鉴角与角跟踪环路相结合,以和差波束鉴角输出的角度测量误差作为自适应环路滤波的输入,实现了对目标飞行器来波角度的动态测量。最后,对所提方法的角度测量误差进行了理论分析并仿真,仿真结果验证了所提方法的测角性能。The measurement of the aspect angles between two space crafts in rendezvous paper and a method of angle measurement based on phased-array antenna is proposed. Firstly,the signals for angle error dis-crimination are formed by taking advantage of the Taylor and Bayliss window functions and discriminative curves are fittingby nonlinear polynomial. After that, an adaptive loop filter for angle tracking is adopted. In the process of angle measure-ment, angle discrimination by sum and difference beams is combined with angle tracking loop and the angle measuring error exported from angle discrimination is taken as the input of the adaptive loop filter,whichrection of arrival of target spacecraft. At last, the angle measurement error of the pand simulated and the measurement performance is verified by the numerical experiment results.

关 键 词：相控阵天线 角度测量 非线性拟合 自适应环路滤波 

分 类 号：V443.4[航空宇航科学与技术—飞行器设计]