发明名称 |
SYSTEM, METHOD, DEVICE AND COMPUTER CODE PRODUCT FOR IMPROVING THE READABILITY OF AN ELECTRONIC COMPASS |
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. |
申请公布号 |
WO2005115079(A3) |
申请公布日期 |
2006.05.11 |
申请号 |
WO2005IB01442 |
申请日期 |
2005.05.27 |
申请人 |
NOKIA CORPORATION;NOKIA INC.;AHOLA, TOM |
发明人 |
AHOLA, TOM |
分类号 |
G01C17/38;G01C17/28 |
主分类号 |
G01C17/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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