针对电信号的有效传输受外界环境引起自身参数变化的问题，提出了一种基于有限元方法求取传输参数的等效电流密度法。
A novel method named equivalent current density based on finite element method was developed for parametric variation problem of signal transmission caused by the external environment.
在复杂电磁环境中，信号密度大且信号形式多样，这给电子侦察带来了很大困难。
In a complex electromagnetic environment, the signal is dense, and signal forms are various. These have posed great difficulties for radar reconnaissance.
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