Abstract: The portable high-frequency digital magnetotelluric system uses only two DC 12V rechargeable car batteries for power supply. The advatange and field operation of the system, the function of the major hardware and software, the flow diagram of data processing and the obtained results are briefly described in this paper. This system possesses the following peculiarities:1. The frequency band (256Hz-4096 s.) is wide;2. Lower power consumption. Two DC 12V rechargeable batteries can be used to operate the system continuously for 24 hours;3. The system is light in weight, and is convenient to be used in the field;4. Complete softwares are available for data collection and transmit, calculation of system response, auto-inverse interpretation and comprehensive drawing etc.. These softwares are efficient, flexible and convenient.

Key words: High-lrequency magnetotelluric system, Hardware, Software, Response of system, Processing results

摘要： 高频轻便数字大地电磁测深系统是一套仅用两块12V汽车电瓶供电的MT系统。文中扼要地叙述了系统的优点,主要软硬件的功能、野外工作的操作,室内资料处理的流程和资料处理结果等。该系统的主要特点是:(1)频带宽,250Hz—4000s;(2)功耗低,用两块12V汽车电瓶可连续工作24小时;(3)轻便灵活、使用方便;(4)软件齐备,应用灵活,处理时可自动进行也可通过人机对话进行。

关键词: 高频大地电磁系统, 硬件, 软件, 系统响应, 处理结果