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1. 发明授权

US08510048B2 Method for detecting underground tunnels 有权
标题翻译：地下隧道检测方法
公开(公告)号：US08510048B2
公开(公告)日：2013-08-13
申请号：US13012153
申请日：2011-01-24
申请人： Benjamin P. Dolgin , Clayton P. Davis
发明人： Benjamin P. Dolgin , Clayton P. Davis
IPC分类号： G01V3/38 , G01B7/00
CPC分类号： G01V7/00
摘要： A method for detecting tunnels within an area comprising in one embodiment the steps of providing horizontal tensor gravity gradients for the area, calculating a plurality of gravity gradient vector field pairs from the horizontal tensor gravity gradients, each gravity gradient vector field pair including one gravity gradient vector field and a respective orthogonal gravity gradient vector field, detecting dipolar points and polar source points in each of the one and respective orthogonal gravity gradient vector fields for each gravity gradient vector field pair, identifying the polar source points that are present in one but not in both of the one gravity gradient vector field and the respective orthogonal gravity gradient vector field for each gravity gradient vector field pair to identify endpoints, and distinguishing the endpoints resulting from surface features from the endpoints resulting from tunnels. The polar source points form the endpoints of the tunnels.
摘要翻译：一种用于检测区域内的隧道的方法，包括在一个实施例中为该区域提供水平张量重力梯度的步骤，从水平张量重力梯度计算多个重力梯度矢量场对，每个重力梯度矢量场对包括一个重力梯度矢量场和相应的正交重力梯度矢量场，为每个重力梯度矢量场对检测一个和各个正交重力梯度矢量场中的每一个中的偶极点和极点源点，识别存在于一个但不包括在每个重力梯度矢量场对中的一个重力梯度矢量场和相应的正交重力梯度矢量场两者中，以识别端点，并且从由隧道产生的端点区分由表面特征导致的端点。极地源点形成隧道的端点。

2. 发明申请

US20120186342A1 Method for Detecting Underground Tunnels 有权
标题翻译：检测地下隧道的方法
公开(公告)号：US20120186342A1
公开(公告)日：2012-07-26
申请号：US13012153
申请日：2011-01-24
申请人： Benjamin P. Dolgin , Clayton P. Davis
发明人： Benjamin P. Dolgin , Clayton P. Davis
IPC分类号： G01V7/00
CPC分类号： G01V7/00
摘要： A method for detecting tunnels within an area comprising in one embodiment the steps of providing horizontal tensor gravity gradients for the area, calculating a plurality of gravity gradient vector field pairs from the horizontal tensor gravity gradients, each gravity gradient vector field pair including one gravity gradient vector field and a respective orthogonal gravity gradient vector field, detecting dipolar points and polar source points in each of the one and respective orthogonal gravity gradient vector fields for each gravity gradient vector field pair, identifying the polar source points that are present in one but not in both of the one gravity gradient vector field and the respective orthogonal gravity gradient vector field for each gravity gradient vector field pair to identify endpoints, and distinguishing the endpoints resulting from surface features from the endpoints resulting from tunnels. The polar source points form the endpoints of the tunnels.
摘要翻译：一种用于检测区域内的隧道的方法，包括在一个实施例中为该区域提供水平张量重力梯度的步骤，从水平张量重力梯度计算多个重力梯度矢量场对，每个重力梯度矢量场对包括一个重力梯度矢量场和相应的正交重力梯度矢量场，为每个重力梯度矢量场对检测一个和各个正交重力梯度矢量场中的每一个中的偶极点和极点源点，识别存在于一个但不包括在每个重力梯度矢量场对中的一个重力梯度矢量场和相应的正交重力梯度矢量场两者中，以识别端点，并且从由隧道产生的端点区分由表面特征导致的端点。极地源点形成隧道的端点。

3. 发明申请

US20110248706A1 METHOD AND SYSTEM FOR NAVIGATION USING MAGNETIC DIPOLES 审中-公开
标题翻译：使用磁力导管进行导航的方法和系统
公开(公告)号：US20110248706A1
公开(公告)日：2011-10-13
申请号：US12757251
申请日：2010-04-09
申请人： Clayton P. Davis , Mitchell R. Belzer , Benjamin P. Dolgin , James C. Zellner , John T. Ishibashi , Joseph C. Landry
发明人： Clayton P. Davis , Mitchell R. Belzer , Benjamin P. Dolgin , James C. Zellner , John T. Ishibashi , Joseph C. Landry
IPC分类号： G01B7/14
CPC分类号： G01B7/003 , G01B7/30 , G01C21/00
摘要： A method of navigation includes receiving a magnetic field signal from a magnetic field transducer, the magnetic field signal proportional to sensed magnetic fields associated with magnetic field sources, in a processor, processing the magnetic field signal to determine magnetic field axes of rotation corresponding to rotations of the sensed magnetic fields, and using the magnetic field axes of rotation to render a position of the magnetic field transducer.
摘要翻译：一种导航方法包括在处理器中从磁场换能器接收磁场信号，该磁场信号与磁场源相关的感测磁场成比例的磁场信号，处理磁场信号以确定对应于转动的磁场旋转轴线的感测磁场，并且使用磁场旋转轴来呈现磁场换能器的位置。

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