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。

    LARGE AREA GROUND MONITORING
    2.
    发明申请
    LARGE AREA GROUND MONITORING 有权
    大面积地面监测

    公开(公告)号:US20140125508A1

    公开(公告)日:2014-05-08

    申请号:US14150736

    申请日:2014-01-08

    IPC分类号: G01S7/41 G01S13/88

    摘要: A municipal infrastructure maintenance system uses a ground vehicle to move an antenna array in back-and-forth sweeps over large areas or distances. The antenna array comprises dozens of compartmentalized radio dipole antennas arranged laterally, shoulder-to-shoulder across the width of each sweep. An antenna switch matrix is connected between the antenna array and a ground-penetrating-radar (GPR) set and provides electronic aperture switching and selection, and the ability to laterally register one sweep to the next. The antenna array is extended out in front of the ground vehicle on a pivotable boom, and the cantilevered weight is a primary concern. The antenna array is constructed with aluminum-on-aluminum honeycomb panels slotted and folded around dozens of resistive-card compartment separators. Printed circuit boards with matching baluns are also slotted to receive tabs on the resistive cards, and their dipole elements are resistive loaded to quench crosstalk and near field effects.

    摘要翻译: 市政基础设施维护系统使用地面车辆在大区域或距离上来回移动天线阵列。 天线阵列包括数十个分隔开的无线电偶极子天线,横向跨越每个扫描的宽度肩并肩。 天线开关矩阵连接在天线阵列和地面穿透雷达(GPR)组之间,并提供电子孔径切换和选择,以及横向注册一个扫描到下一个扫描的能力。 天线阵列在地面车辆的前面在可枢转的悬臂上延伸出来,而悬臂重量是主要的关注点。 天线阵列由铝铝蜂窝板构成,开槽和折叠在数十个电阻卡隔间隔板上。 具有匹配巴伦的印刷电路板也被开槽以接收电阻卡上的突片,并且它们的偶极元件被阻抗加载以消除串扰和近场效应。

    Large area ground monitoring
    3.
    发明授权
    Large area ground monitoring 有权
    大面积地面监测

    公开(公告)号:US09207307B2

    公开(公告)日:2015-12-08

    申请号:US14150736

    申请日:2014-01-08

    摘要: A municipal infrastructure maintenance system uses a ground vehicle to move an antenna array in back-and-forth sweeps over large areas or distances. The antenna array comprises dozens of compartmentalized radio dipole antennas arranged laterally, shoulder-to-shoulder across the width of each sweep. An antenna switch matrix is connected between the antenna array and a ground-penetrating-radar (GPR) set and provides electronic aperture switching and selection, and the ability to laterally register one sweep to the next. The antenna array is extended out in front of the ground vehicle on a pivotable boom, and the cantilevered weight is a primary concern. The antenna array is constructed with aluminum-on-aluminum honeycomb panels slotted and folded around dozens of resistive-card compartment separators. Printed circuit boards with matching baluns are also slotted to receive tabs on the resistive cards, and their dipole elements are resistive loaded to quench crosstalk and near field effects.

    摘要翻译: 市政基础设施维护系统使用地面车辆在大区域或距离上来回移动天线阵列。 天线阵列包括数十个分隔开的无线电偶极子天线,横向跨越每个扫描的宽度肩并肩。 天线开关矩阵连接在天线阵列和地面穿透雷达(GPR)组之间,并提供电子孔径切换和选择,以及横向注册一个扫描到下一个扫描的能力。 天线阵列在地面车辆的前面在可枢转的悬臂上延伸出来,而悬臂重量是主要的关注点。 天线阵列由铝铝蜂窝板构成,开槽和折叠在数十个电阻卡隔间隔板上。 具有匹配巴伦的印刷电路板也被开槽以接收电阻卡上的突片,并且它们的偶极元件被阻抗加载以消除串扰和近场效应。

    PRACTICAL ELECTROMAGNETIC GRADIOMETER
    4.
    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。