The deformation information is obtained from ultrasonic echo time delay.
软组织的形变信息是通过超声回波延迟时间得到的。
The estimation of time delay and scale of wideband echo is addressed.
研究了水下宽频带信号时延和尺度的估计问题。
Using simulation echo wave and accurate time delay circuit to measure ranging ability, using CCD to grasp laser facular to measure divergence of laser pulse, the digitized methods are realized.
采用模拟回波和精密延时电路检测照射能力、用CCD采集激光光斑测试激光束散角，实现了整机性能的数字化检测。
Using simulation echo wave and accurate time delay circuit to measure ranging ability, using CCD to grasp laser facular to measure divergence of laser pulse, the digitized methods are realized.
采用模拟回波和精密延时电路检测照射能力、用CCD采集激光光斑测试激光束散角，实现了整机性能的数字化检测。
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