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公开(公告)号:US5485273A
公开(公告)日:1996-01-16
申请号:US690174
申请日:1991-04-22
CPC分类号: G01C19/66
摘要: Disclosed herein is a Ring Laser Gyroscope Enhanced Resolution System comprising, in a preferred embodiment, a sampling frequency modulation phase-locked loop (or "chirp") which is used in combination with the fast filter. Enhanced resolution is achieved by using the fast filter (preferably a moving average digital filter) to gather optically integrated rate data and accumulate this data. During the data gathering process, the accumulated data is sampled at a rate set by a frequency modulated ("chirper") phase-locked loop in order to remove undesirable data due to aliasing effects upon the digital filter. In this manner, an enhanced resolution of the gyroscope angular measurement is achieved.
摘要翻译: 本文公开了一种环形激光陀螺仪增强分辨率系统,其在优选实施例中包括与快速滤波器组合使用的采样频率调制锁相环(或“啁啾”)。 通过使用快速滤波器(优选移动平均数字滤波器)来收集光学积分的速率数据并累积该数据来实现增强的分辨率。 在数据采集过程中,以由频率调制(“啁啾”)锁相环设置的速率对累积数据进行采样,以便由于对数字滤波器的混叠效应而消除不期望的数据。 以这种方式,实现陀螺仪角度测量的增强分辨率。