In these problems, special receiving-transmitting coils has been introduced in order to banishing directly coupling signal, such as orthogonal receiving-transmitting coils, orthogonal double-receiving coils.
在感应测井问题中,为了消除直耦信号,常采用特殊形式的收发线圈系:收发正交,双接收正交。
参考来源 - 非均匀介质中三维电磁散射分析的有限元及其混合方法：理论与应用·2,447,543篇论文数据，部分数据来源于NoteExpress
Element position error, mutual coupling between elements, and the difference in frequency responses of receiver channels influence directly the performance of array radar signal processing.
阵元位置误差、阵元间互耦的影响、接收机通道的频率响应的差异都直接影响着雷达阵列信号处理的性能。
But asynchronous machine is a multivariate close coupling non - linear time - variable parameter system. And it is difficult to control by rule and line through adding exterior signal directly.
而异步电机是一个多变量、强耦合、非线性的时变参数系统，很难直接通过外加信号准确控制电磁转矩。
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