发明授权
- 专利标题: Ring laser gyroscope enhanced resolution system
- 专利标题(中): 环形激光陀螺增强分辨率系统
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申请号: US690174申请日: 1991-04-22
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公开(公告)号: US5485273A公开(公告)日: 1996-01-16
- 发明人: John G. Mark , Daniel A. Tazartes , Robert E. Ebner , Neal J. Dahlen , Nibir K. Datta
- 申请人: John G. Mark , Daniel A. Tazartes , Robert E. Ebner , Neal J. Dahlen , Nibir K. Datta
- 申请人地址: CA Woodland Hills
- 专利权人: Litton Systems, Inc.
- 当前专利权人: Litton Systems, Inc.
- 当前专利权人地址: CA Woodland Hills
- 主分类号: G01C19/66
- IPC分类号: G01C19/66 ; H01S3/083 ; H03H15/00 ; H03H17/00 ; G01B9/02
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.
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