发明授权
US06964107B1 System, method, device and computer code product for improving the readability of an electronic compass
有权
用于提高电子罗盘可读性的系统，方法，设备和计算机代码产品
- 专利标题： System, method, device and computer code product for improving the readability of an electronic compass
- 专利标题（中）： 用于提高电子罗盘可读性的系统，方法，设备和计算机代码产品
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申请号： US10856206申请日： 2004-05-27
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公开(公告)号： US06964107B1公开(公告)日： 2005-11-15
- 发明人: Tom Mikael Ahola
- 申请人： Tom Mikael Ahola
- 申请人地址： FI
- 专利权人： Nokia Corporation
- 当前专利权人： Nokia Corporation
- 当前专利权人地址： FI
- 代理机构： Foley & Lardner
- 主分类号： G01C17/28
- IPC分类号： G01C17/28 ; G01C17/38
摘要：
A system, method, device and computer code product is disclosed for stabilizing compass heading under tilt error conditions from an uncorrected electronic compass reading. Exemplary embodiments include a stabilizing filter configured to filter out tilt errors incorporated into the uncorrected electronic compass reading and a filter adaptation module configured to control the stabilizing filter response based on the signal radius of the uncorrected compass reading and a pre-calibrated ideal radius for the compass. The filter adaptation module can be configured to calculate a filter response parameter as a function of the relative difference between the signal radius of the uncorrected compass reading and the pre-calibrated ideal radius. The filter response parameter can be passed to the stabilizing filter for controlling its operation.
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