本文以无缺陷时的表面回波为参考信号，用信号处理方法，识别表面缺陷回波，从而实现对表面缺陷的检测。文中给出了该方法的原理及实验结果。
Detection of surface-breaking cracks has been realized by signal processing method using the reference signal from a surface without flaws. The principle and experimental results are given.
粗糙表面激光回波偏振特性是激光探测、目标识别等领域的一个重要研究内容，它对激光雷达、红外探测和目标识别等遥感设备的优化设计和性能改善有很强的促进作用。
The laser backscattering polarization characteristics of rough surface are investigatedin this paper, it is a fundamental issue to laser detection, target recognition and other fieldsof study.
文章详细介绍了无源无线轮胎压力监测系统中的声表面波传感器工作原理、回波信号组成、数字信号处理和软件开发方法；
The paper introduce the theory of surface acoustic wave sensor, the digital signal treatment, the method of soft design in the passive and wireless tire pressure monitoring system in detail.
阐述从高频地波雷达海洋回波反演海洋表面流中，使用MUSIC算法提取径向流方位必须的信号预处理。
In this paper, signal preprocessing for bearing determination of ocean surface radial current mapping by HF ground wave radar based on MUSIC is investigated.
分析了探头调整时脉冲回波信号的变化特点，在实验的基础上构建了声束入射角与表面波时域特征值间的关系模型。
Using the characteristics of pulse echo singal during the probe adjustment, a relation model between angle of incidence and time-domain eigenvalue of reflect wave signals was proposed.
本发明的诊断设备适于同时采集超声回波信号和表面增强拉曼光谱 信号。
The inventive diagnostic apparatus is adapted for simultaneous acquisition of ultrasonic echo signals and surface enhanced Raman spectroscopic signals.
实验观测到两类由弹性表面波的再辐射产生的回波：径向表面反向散射波和纵向表面反向散射波。
Two sorts of echoes caused by the reradiation of elastic surface wave have been observed in experimentation: the radial surface backscattering wave and the longitudinal surface backscattering wave.
由于实际环境的复杂性，理论计算大尺寸复杂目标粗糙表面的激光散射回波能量影响一直十分困难。
It is difficult to theoretically calculate the laser scattering echo energy from rough surface of whole dimension target for complex environment in actual application.
由于实际环境的复杂性，理论计算大尺寸复杂目标粗糙表面的激光散射回波能量影响一直十分困难。
It is difficult to theoretically calculate the laser scattering echo energy from rough surface of whole dimension target for complex environment in actual application.
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