发明申请
- 专利标题: USING OBJECT TO ALIGN AND CALIBRATE INERTIAL NAVIGATION SYSTEM
- 专利标题(中): 使用对象对齐和校准惯性导航系统
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申请号: US12689085申请日: 2010-01-18
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公开(公告)号: US20110178708A1公开(公告)日: 2011-07-21
- 发明人: Gengsheng Zhang , Lionel J. Garin
- 申请人: Gengsheng Zhang , Lionel J. Garin
- 申请人地址: US CA San Diego
- 专利权人: QUALCOMM Incorporated
- 当前专利权人: QUALCOMM Incorporated
- 当前专利权人地址: US CA San Diego
- 主分类号: G01C21/16
- IPC分类号: G01C21/16 ; G06K7/00
摘要:
The initialization of an inertial navigation system is performed using information obtained from an image of an object. Positional and orientational information about the object in a global reference frame and positional and orientational information about the camera relative to the object are obtained from the image. Positional and orientational information for the camera in the global reference frame is determined along with a transformation matrix between inertial sensor reference frame and a navigation coordinate frame. The inertial navigation system is initialized using the positional and orientational information for the camera, the transformation matrix and the velocity of the camera when the object was imaged, i.e., zero. Using the initialized data with measurements from the inertial sensors the position of the mobile platform may be updated during navigation and provided, e.g., on a digital map. Inertial navigation errors may be corrected using information obtained from images of different objects.
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