Maximum entropy spectral estimation and LMS adaptive algorithm were proposed to extract the reflection echo signal of laser ranging system.
提出了最大熵谱估计和LMS自适应算法提取激光测距系统的反射回波信号。
Throughthe application of reflection echo in concrete filling pile, the article analyzed different shape of reflection echo curve from theory to practice.
通过对应力波反射法在混凝土灌注桩检测上的应用效果，并且根据反射波曲线的不同形状，从理论上和施工中进行分析、判读。
The launch system USES ultrasonic echo and reflection of the time difference to measure the distance test.
该零碎应用发射超声波与反射回波时间差来测量待测间隔。
This paper introduces the theory calculation of shear wave reflection for block corner. And it derives the echo acoustic pressure theory calculation formula for block corner and its shape defect.
阐述了横波在端角反射中的理论方法计算，并推导端角及端角形缺陷的回波声压理论计算公式。
Ultrasonic encounter impurities or boundary surface will produce significant reflection form reflex into echo, encounter moving objects can produce doppler effect.
超声波碰到杂质或分界面会产生显著反射形成反射成回波，碰到活动物体能产生多普勒效应。
Radar imaging geometry, which performs imaging in the direction of slanting range at the sample time of electromagnetic echo reflection, is quite different from optical imagery.
雷达是通过接收一定时间间隔内电磁回波成像，它与可见光成像不同。
Radar imaging geometry, which performs imaging in the direction of slanting range at the sample time of electromagnetic echo reflection, is quite different from optical imagery.
雷达是通过接收一定时间间隔内电磁回波成像，它与可见光成像不同。
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