Practical electromagnetic gradiometer
    1.
    发明授权
    Practical electromagnetic gradiometer 有权
    实用电磁梯度计

    公开(公告)号:US09568632B2

    公开(公告)日:2017-02-14

    申请号:US14477090

    申请日:2014-09-04

    IPC分类号: G01V3/12 G01V3/15

    CPC分类号: G01V3/12 G01V3/15

    摘要: An electromagnetic gradiometer (EMG) survey kit includes a lightweight man-carry boom about ten feet long. Matched magnetic dipole antennas are attached at each end and connected to a differential EMG receiver able to make measurements in the picoTelsa range. A pair of staging tripods allow the man-carry boom to be prepared for field use and assist the user in positioning themselves under a shoulder sling. An air core transmitter loop antenna and a low frequency square wave generator are spotted nearby a survey on the ground surface. Its emissions will illuminate any underground conductive structures with primary electric field waves. These in turn will reradiate near field magnetic waves that can be detected by the EMG receiver while walking around in a search area on the ground surface. GPS navigation receivers are used to locate and log the changing positions of the EMG receiver and stationary loop transmitter.

    摘要翻译: 电磁梯度计(EMG)测量套件包括一个大约十英尺长的轻型人造吊臂。 匹配的磁偶极子天线在每一端连接并连接到能够在picoTelsa范围进行测量的差分EMG接收器。 一对分级三脚架允许人造吊杆准备进行现场使用,并帮助用户将自己定位在肩带上。 在地表附近的一个勘测附近发现了一个空中发射机环形天线和一个低频方波发生器。 其排放将照亮具有初级电场波的任何地下导电结构。 这些反过来将再次辐射EMG接收机在地面上的搜索区域中走动时可以检测到的近场磁波。 GPS导航接收机用于定位和记录EMG接收机和固定环路发射机的变化位置。

    PRACTICAL ELECTROMAGNETIC GRADIOMETER
    2.
    发明申请
    PRACTICAL ELECTROMAGNETIC GRADIOMETER 审中-公开
    实用电磁等离子体

    公开(公告)号:US20140368196A1

    公开(公告)日:2014-12-18

    申请号:US14477090

    申请日:2014-09-04

    IPC分类号: G01V3/17 G01V3/12

    CPC分类号: G01V3/12 G01V3/15

    摘要: An electromagnetic gradiometer (EMG) survey kit includes a lightweight man-carry boom about ten feet long. Matched magnetic dipole antennas are attached at each end and connected to a differential EMG receiver able to make measurements in the picoTelsa range. A pair of staging tripods allow the man-carry boom to be prepared for field use and assist the user in positioning themselves under a shoulder sling. An air core transmitter loop antenna and a low frequency square wave generator are spotted nearby a survey on the ground surface. Its emissions will illuminate any underground conductive structures with primary electric field waves. These in turn will reradiate near field magnetic waves that can be detected by the EMG receiver while walking around in a search area on the ground surface. GPS navigation receivers are used to locate and log the changing positions of the EMG receiver and stationary loop transmitter.

    摘要翻译: 电磁梯度计(EMG)测量套件包括一个大约十英尺长的轻型人造吊臂。 匹配的磁偶极子天线在每一端连接并连接到能够在picoTelsa范围进行测量的差分EMG接收器。 一对分级三脚架允许人造吊杆准备进行现场使用,并帮助用户将自己定位在肩带上。 在地表附近的一个勘测附近发现了一个空中发射机环形天线和一个低频方波发生器。 其排放将照亮具有初级电场波的任何地下导电结构。 这些反过来将再次辐射EMG接收机在地面上的搜索区域中走动时可以检测到的近场磁波。 GPS导航接收机用于定位和记录EMG接收机和固定环路发射机的变化位置。

    STRAY WIRE LOCATION SENSOR
    3.
    发明申请
    STRAY WIRE LOCATION SENSOR 审中-公开
    布线布线传感器

    公开(公告)号:US20140139224A1

    公开(公告)日:2014-05-22

    申请号:US14155566

    申请日:2014-01-15

    IPC分类号: G01V3/10

    CPC分类号: G01V3/104

    摘要: A stray-wire sensor includes a vertical magnetic gradiometer (VMG) carried over the surface by ground vehicles or by low-flying aircraft. The VMG has a spot of sensitivity on the ground which stays nadir to the VMG itself. A Faraday shield surrounding the VMG screens out the near field electric dipole signals, and a ferrite rod core and winding inside act as an antenna sensitive to the near-field magnetic dipole signals which radiate from horizontal lying stray wires on the ground surface in the dirt of hidden by ground cover. The VMG depends on it being moved around over the ground so that magnetic signal gradients and reversals can be measured point-by-point. The nadir points which fall over a point along a long horizontal wire will express characteristic signatures in the signal gradients and phase reversals measureable in the antenna.

    摘要翻译: 杂散线传感器包括由地面车辆或低空飞行器在地面上承载的垂直磁梯度计(VMG)。 VMG在地面上有一个敏感点,它保持在VMG本身的最低点。 围绕VMG的法拉第屏蔽屏蔽了近场电偶极子信号,铁氧体磁芯和绕组内部作为对近场磁偶极子信号敏感的天线,辐射源于污物表面上的水平放置的杂散电线 被地面掩蔽隐藏。 VMG依靠它在地面上移动,以便逐点测量磁信号梯度和反转。 沿着长的水平线落在一点上的最低点将表示信号梯度中的特征特征和在天线中可测量的相位反转。