Underground exploration apparatus
    3.
    发明授权
    Underground exploration apparatus 有权
    地下探测仪

    公开(公告)号:US07109718B2

    公开(公告)日:2006-09-19

    申请号:US11257031

    申请日:2005-10-25

    IPC分类号: G01V3/06

    CPC分类号: G01V3/06

    摘要: A current to be applied to a ground is defined as the sum of two sinusoidal waves having first and second frequency components. A signal to be used at the time of synchronous detection is defined as a difference between the sinusoidal waves having the first and second frequency components. As a result, a substance in the ground, and the position and depth of the substance can be specified with high accuracy.

    摘要翻译: 要施加到地面的电流被定义为具有第一和第二频率分量的两个正弦波的和。 将在同步检测时使用的信号定义为具有第一和第二频率分量的正弦波之间的差。 结果,可以高精度地指定地面中的物质,物质的位置和深度。