GEM-8~(TM)系统用正交的接收器线圈来导出电磁场的椭圆度及倾角。不象传统的EM系统那样,这个多频系统不需要在发射器与接收器之间有一个一次场基准连接。由于接收器是独立的,大部分传统的测量装置都使用一个或多个接收器,故采用这个系统均可进行工作。因此,地球物理学家就很容易改变勘探设计以适应变化的野外条件。此外,还能减少费用以及避免受环境破坏的测线中断。 GEM-8 ~ (TM) system uses orthogonal receiver coils to derive the ellipticity and dip angle of the electromagnetic field. Unlike traditional EM systems, this multi-frequency system does not require a field-base connection between the transmitter and the receiver. Because the receiver is independent, most of the traditional measuring devices use one or more receivers, so using this system can work. As a result, geophysicists can easily change exploration designs to adapt to changing field conditions. In addition, it can reduce costs and avoid line breaks caused by environmental damage.