发明名称 |
Azimuth measuring method, azimuth measuring apparatus, position measuring method, and position measuring apparatus |
摘要 |
First to third exciting coils are arranged at a reference position. First to third detecting coils are arranged at a measuring subject position distant from the reference position. Voltages induced in the first to third detecting coils are measured when the first exciting coil is excited. Voltages induced in the first to third detecting coils are measured when the second exciting coil is excited. Voltages induced in the first to third detecting coils are measured when the third exciting coil is excited. An azimuth of the measuring subject position from the reference position based on a predetermined calculation by using all nine induced-voltages which are obtained by the first to third detecting coils.
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申请公布号 |
US6498478(B2) |
申请公布日期 |
2002.12.24 |
申请号 |
US20010928586 |
申请日期 |
2001.08.13 |
申请人 |
RADIC CO., LTD.;SAKATA DENKI CO., LTD. |
发明人 |
SAKATA FUMIO;YAMAZAKI NOBUYOSHI;ENDO SHINICHI;WATANABE KOJI |
分类号 |
G01B7/004;G01B7/30;G01C17/30;(IPC1-7):G01B7/14 |
主分类号 |
G01B7/004 |
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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