大地电磁信号测量关键技术研究与实现

Study and Implementation of Key Technology for Magnetotelluric Signal Measurement

大地电磁(Magnetotelluric,MT)方法是探测地下介质电性参数的有效手段之一,MT仪器装备的性能是实现这一方法的关键所在。长期以来MT仪器设备依赖于国外进口,为实现自主创新,通过解决众多关键技术,其中包括低噪声技术、高精度技术、低功耗技术、低时漂技术、大容量存储技术,实现了完全自主知识产权的新型大地电磁采集器。通过与国外同类仪器的野外对比试验表明,仪器指标满足标准MT测量要求。

Magnetotelluric（MT）method is the effective means to detect underground Conductive Structure,MT instrumentation equipment performance is the key to achieving this approach.For a long time MT equipment is dependent on foreign imports.For the realization of independent innovation,by addressing a number of key technologies,including low-noise technology,high-precision technology,low-power technology,low drift technology,high-capacity storage technology,the new magnetotelluric collector with a fully self-Intellectual Property was achieved.By comparison with similar foreign field comparison tests,the results showed that the instruments have met MT measurement requirements.