捷联导引头隔离度分析与寄生回路滤波器设计  

Strapdown Seeker Disturbance Rejection Rate Analysis and Parasitic Loop Filter Design

作　　者：田源[1] 宿敬亚 王俊波 TIAN Yuan;XIU Jing-ya;WANG Jun-bo(Beijing Institute of SpaceLong March Vehicle,Beijing 100076,China;Beijing Institute of Electronic System Engineering,Beijing 100854,China)

机构地区：[1]北京航天长征飞行器研究所,北京100076 [2]北京电子工程总体研究所,北京100854

出　　处：《导航定位与授时》2020年第2期97-102,共6页Navigation Positioning and Timing

摘　　要：分析了捷联导引头惯性视线角速度提取的间接解耦方法与直接解耦方法的制导回路特点以及两种方法的等效关系,推导了描述捷联导引头隔离度的表达式并讨论了隔离度对制导回路的影响。通过设计寄生回路滤波器使导引头测量信息传递通道与姿态测量信息传递通道的时频特性一致,抑制信号测量与传递过程中的噪声干扰。最后通过仿真算例验证了滤波器的有效性。The characteristics of the guidance loop of the indirect decoupling method and the direct decoupling method of inertial line-of-sight angular velocity extraction of the strapdown seeker are analyzed and the equivalence of the two methods is proved. A formula for the disturbance rejection rate is derived and an influence on the guidance loop is discussed. By designing a parasitic loop filter, the time frequency characteristics of the seeker’s measurement channel are consistent with that of the attitude measurement channel, and the noise interference in the process of signal measurement and transmission is suppressed. Finally, the effectiveness of the filter is verified by a simulation example.

关 键 词：捷联导引头 视线角速度 隔离度 寄生回路 

分 类 号：V448[航空宇航科学与技术—飞行器设计]