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频域电磁探测仪器已广泛地应用于地球物理勘探，由于受到中短波广播信号的干扰，接收系统需要对接收信号进行调谐滤波等处理。文章研究了一种基于单片机的具有存储、自动切换波段和及时自动修正功能的调谐控制器，并给出了测试电路和测试结果。
Frequency domain electromagnetic detection instruments have been widely used in geophysical prospecting, due to the interference of short-wave radio signals, the receiving system needs to be tuned to filter the received signal processing. This paper studies a tuning controller based on singlechip which has the functions of storage, automatic switching of waveband and automatic correction in time. The test circuit and test results are given.