青藏高原地壳巨厚，构造复杂。用大地电磁方法（ＭＴ）研究其壳幔结构，必须采集到ｎ×１０２～３×１０－５Ｈｚ的大地电磁信号。配合使用Ｖ５系统和ＬＩＭＳ系统进行超宽频带ＭＴ数据的观测，这在我国是首次。两种系统都记录了时间序列。长周期数据采集中应用了远参考站观测技术。这些为获得高质量的ＭＴ响应资料提供了条件。 The crust of the Qinghai-Tibet Plateau is thick and complex. To study its crust-mantle structure by means of the Earth’s electromagnetic method (MT), it is necessary to acquire a geomagnetic signal of n × 102 ~ 3 × 10-5Hz. It is the first time in our country to cooperate with V5 system and LIMS system to observe ultra-wideband MT data. Both systems record the time series. Long-cycle data acquisition far reference station observation technology. These provide the conditions for obtaining high quality MT response data.