摘要
对超声检测中常遇到的变采样问题进行讨论,提出了一套二次采样算法,有效解决了该问题,举例说明了超声信号二次采样前后时频域特性的变化,并总结了该算法的优缺点。
Variable sampling often met in ultrasonic testing was discussed. A resampling arithmetic was given. The radio frequency(RF) signal characters of time and frequency domains before and after resampling were analyzed. And the advantage and disadvantage of the resampling arithmetic were summarized.
出处
《无损检测》
2004年第4期177-179,共3页
Nondestructive Testing
