论文部分内容阅读
勘查深度超出动源电磁系统探测范围的导体一直是依靠定源大回线法,如土拉姆法,利用两个接收线圈(线圈距调节到对应于所需的勘探深度)在一系列频率上测量场强比和相位差。较新的进展为只要给出时间域类型的发射波形和测量规程就能测出磁场
Conductors that are surveyed beyond the detection range of the source electromagnetic system have been relying on a fixed-source large-return method, such as Turam’s method, using two receive coils (the coil distance is adjusted to correspond to the desired exploration depth) over a range of frequencies Measure the field strength ratio and phase difference. Newer developments have been the detection of magnetic fields by providing time-domain type transmit waveforms and measurement protocols