Results show that the signal processing and the properties of angular resolution by the dual Gaussian pulse excitation are better than those by the singular Gaussian pulse.
结果表明：双向高斯脉冲激励的处理过程和角分辨率特性均优于单向高斯脉冲。
For arc ultrasonic excitation, both the continuous and the pulse signal was separately applied to the test system including a conventional arc welding circuit.
在常规弧焊回路中采用了连续波和脉冲敲击式等不同的激励方式获得电弧超声信号。
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