reflection echo

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。

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Based on the principle of imagery by a digital ultrasonic logging system, a method for computing the reflection coefficient of the side wall according to the degree of greyness and the echo time data is presented.

本文从数字超声电视测井的成象原理出发，研究了根据井壁超声图象的灰度和回波时间数据计算井壁反射系数的方法。

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Sound pulse specular reflection echo and their curvature effect of boundary surface

脉冲镜反射回波及其表面曲率效应

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In high frequency range, the specular reflection echo have the same wave form as the incident wave, but in low frequency range or resonance scattering range, there is a time expansion of the pulse width after main reflecting echo from smooth curvature surface.

在低频或谐振散射区域，光滑曲率表面的脉冲镜反射回波特征是在主回波后有时间扩展，它是由曲率反射面产生的，称为回波的曲率效应；

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It can largen effectively lacal details of radar echo signal, realize identifying the ship reflection and chaff cloud reflection, and ensure the antiship missile tracking and assaulting the real ship.

该方法能有效地放大雷达回波信号的局部细节，从而实现对舰艇和箔条假目标的识别和区分，确保导弹对真实目标进行跟踪和攻击。

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