...键词：EH-4 系统；张量阻抗；功率谱；视电阻率；最小二乘法；Robust 处理 [gap=1680]Key words：EH-4 system；tensor impedance；power spectrum；apparent resistivity； least square method；Robust handling ..
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通过理论模型算例分析了三维反演中使用张量阻抗对角元素的重要性。
The importance of including the on-diagonal impedance tensor terms in 3D inversion is considered in the synthetic example.
大地电磁资料处理方法大多数都是对一段记录做傅氏变换，构成功率谱后再求张量阻抗元素。
Most magnetotelluric data processing methods make the Fourier transform of a segment record to get a power spectrum then to solve for tensor impedance element.
通过深入分析，还得到了每个通用张量阻抗元素计算公式的直观表达式，显示出明确的物理意义。
Through deep analysis, we also got direct expression of calculation formula for each general tensor impedance element, showing a clear physical meaning.
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