On the basis of this, a compensation approach with two horizontal aerials is proposed, which use a locator to determine the sonde depth by detecting long wave transmitted from underground.

• 该方法的创新之处在于采用长波地下发射，地面同向固定间距双线圈接收，实现了电磁波的强度补偿，极大地提高了定位与测深精度。