发明名称 |
Locating Technique and Apparatus Using an Approximated Dipole Signal |
摘要 |
Location determination is performed using a transmitter including an elongated generally planar loop antenna defining an elongation axis. The elongation axis is positioned along at least a portion of a path. A magnetic field is then generated which approximates a dipole field. Certain characteristics of the magnetic field are then determined at a receiving position radially displaced from the antenna elongation axis. Using the determined certain characteristics, at least one orientation parameter is established which characterizes a positional relationship between the receiving position and the antenna on the path. The magnetic field may be transmitted as a monotone single phase signal. The orientation parameter may be a radial offset and/or an angular orientation between the receiving position and the antenna on the path. The antenna of the transmitter may be inserted into a first borehole to transmit the magnetic field to a receiver inserted into a second borehole.
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申请公布号 |
US2009027055(A1) |
申请公布日期 |
2009.01.29 |
申请号 |
US20080240484 |
申请日期 |
2008.09.29 |
申请人 |
BRUNE GUENTER W;MERCER JOHN E;CHAU ALBERT W;ZELLER RUDOLF |
发明人 |
BRUNE GUENTER W.;MERCER JOHN E.;CHAU ALBERT W.;ZELLER RUDOLF |
分类号 |
G01V3/10;H01Q1/04;H01Q7/00;H01Q9/28 |
主分类号 |
G01V3/10 |
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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