Precise location and orientation of a concealed dipole transmitter
    1.
    发明授权
    Precise location and orientation of a concealed dipole transmitter 有权
    隐蔽偶极子发射器的精确位置和方向

    公开(公告)号:US08188745B2

    公开(公告)日:2012-05-29

    申请号:US12315696

    申请日:2008-12-05

    IPC分类号: G01V3/08

    CPC分类号: G01V3/12

    摘要: A method for determining the location of an underground sonde transmitter is disclosed. In some embodiments, the method includes measuring a set of complex electromagnetic field magnitude and phase strengths at one or more of positions while traversing a target sonde path at any angle using one or more electromagnetic coil sensors, modeling a set of expected complex electromagnetic strengths of a hypothetical sonde at the one or more of positions for one or more of the electromagnetic coil sensors, the set of expected electromagnetic field values corresponding to a model for the target sonde, and estimating parameters related to the target sonde based on the residual error between the measured set of complex electromagnetic field values and the modeled set of expected complex electromagnetic field strengths, wherein a final estimated parameter set is determined after the residual error has converged to a minimum tolerance.

    摘要翻译: 公开了一种用于确定地下探空发射机位置的方法。 在一些实施例中,该方法包括在一个或多个位置处测量一组复杂电磁场幅度和相位强度,同时使用一个或多个电磁线圈传感器以任何角度穿过目标探空仪路径,对一组预期复合电磁强度进行建模 一个或多个用于一个或多个电磁线圈传感器的一个或多个位置的假想探头,与目标探测器的模型相对应的一组预期电磁场值,以及基于目标探测器相关的参数, 测量的复电磁场值集合和所建模的预期复电磁场强度集合,其中在残差误差已经收敛到最小公差之后确定最终估计参数集。

    System for determining a precise location and orientation of a concealed dipole transmitter
    2.
    发明授权
    System for determining a precise location and orientation of a concealed dipole transmitter 有权
    用于确定隐蔽偶极子发射器的精确位置和取向的系统

    公开(公告)号:US09158024B2

    公开(公告)日:2015-10-13

    申请号:US13477909

    申请日:2012-05-22

    IPC分类号: G01V3/08 G01V3/12

    CPC分类号: G01V3/12

    摘要: A system for determining the position of an underground sonde transmitter is disclosed. In some embodiments, the system measures a set of complex electromagnetic field magnitude and phase strengths at one or more positions while traversing a target sonde path at any angle using one or more electromagnetic coil sensors, models a set of expected complex electromagnetic strengths of a hypothetical sonde at the positions for one or more of the electromagnetic coil sensors, the set of expected electromagnetic field values corresponding to a model for the target sonde, and estimates parameters related to the target sonde based on the residual error between the measured set of complex electromagnetic field values and the modeled set of expected complex electromagnetic field strengths. A final estimated parameter set is determined after the residual error has converged to a minimum tolerance to indicate the sonde transmitter position.

    摘要翻译: 公开了一种用于确定地下探空发射器的位置的系统。 在一些实施例中,系统在一个或多个位置处测量一组复杂的电磁场幅度和相位强度,同时使用一个或多个电磁线圈传感器以任何角度穿过目标探空仪路径,模拟一组预期的复合电磁强度 在一个或多个电磁线圈传感器的位置处的探测器,对应于目标探空器的模型的一组预期电磁场值,并且基于测量的复合电磁场的集合来估计与目标探测器相关的参数 场值和模拟的预期复合电磁场强度集合。 在剩余误差已经收敛到最小容差以指示探头发射机位置之后,确定最终估计参数集。

    Precise location of buried metallic pipes and cables in the presence of signal distortion
    3.
    发明授权
    Precise location of buried metallic pipes and cables in the presence of signal distortion 有权
    在存在信号失真的情况下,埋藏金属管道和电缆的精确位置

    公开(公告)号:US07356421B2

    公开(公告)日:2008-04-08

    申请号:US11100696

    申请日:2005-04-06

    IPC分类号: G01V3/15

    CPC分类号: G01V3/081

    摘要: A new approach for locating an underground line described herein remains accurate in the face of bleedover by including both amplitude and phase from at least two magnetic field strength sensors in the measurement set. A numerical optimization step is introduced to deduce the positions and currents of each of several cables, of which one is the targeted cable and the others are termed bleedover cables. Furthermore, some embodiments of the method accounts for practical problems that exist in the field that relate to reliable estimation of cable positions, like the phase transfer function between transmitter and receiver, the estimation of confidence bounds for each estimate, and the rejection of false positive locates due to the presence of noise and interference.

    摘要翻译: 通过在测量组中包括来自至少两个磁场强度传感器的振幅和相位两者来确定泄漏面的新方法,用于定位本文所述的地下线路的方法仍然是准确的。 引入数值优化步骤来推导出几根电缆的位置和电流,其中一条是目标电缆,其他电缆称为放电电缆。 此外,该方法的一些实施例解决了现场存在的与电缆位置的可靠估计相关的实际问题,如发射机和接收机之间的相位传递函数,每个估计的置信界限的估计以及假阳性的拒绝 由于噪声和干扰的存在而定位。