超声脉冲回波法是一种高精度的弹性模量声速测量法。
The ultrasonic pulse reflecting method is applied to survey the dynamic elastic moduli.
本文针对冲击回波法在混凝土无损检测中的应用展开研究。
The applications of impact-echo method on nondestructive testing for concrete structures are researched in this paper.
介绍了两种常用的材料薄层超声表征方法———纵波脉冲回波法和兰姆波法。
This paper introduces two methods of ultrasonic characterization of thin layers: longitudinal pulse-echo and Lamb waves.
本文介绍了两种目前常用的材料薄层超声表征方法——纵波脉冲回波法和兰姆波法。
This paper introduces two methods of ultrasonic characterization of thin layers: pulse-echo and Lamb waves.
超声脉冲回波法以缺陷定位准确、适用范围广、操作方便等优点广泛应用于无损检测。
Ultrasonic echo method is widely applied in non-destructive detection for its advantage of accurate defect locating, wide application, convenient operation and so on.
超声脉冲回波法以缺陷定位准确、适用范围广、操作方便等优点广泛应用于无损检测。
Ultrasonic echo method is widely applied in non-destructive detection for its advantage of accurate defect locating, wide application, and convenient operation and so on.
本方法对目标回波信号采用了相干视频模拟法，在视频上模拟目标回波的多普勒频率。
In the method, the target reflected signal is generated by the way of coherent video simulation and the Doppler frequency of target is simulated on video.
阐述基于目标方位走向法的目标识别理论，提出利用体目标回波的空间方位分布信息识别水下目标尺度信息的方法。
A method of underwater target dimension identification was proposed by special bearing distribution data of body target echo based on identification theory of a target bearing method.
分析了检测信号的特征，并采用截止频率法成功地提取了微弱的缺陷回波信号。
The characteristics of the test signals were analyzed and weak defect echo signals were successfully extracted by cut-off frequency technique.
然后用快速自旋回波重T2 WI加权序列扫描，图像经最大密度投影法重建。
Then fast spiral echo sequence was used to get weighted T2WI images and the images were reconstructed with MIP(maximum intensity projection).
用该法在浅海负梯度和均匀层情况下，计算了远程混响和回波、混响比的距离、深度结构。
The range and depth dependence of the long-range reverberation and echo-reverberation ratio were calculated for the cases of negative gradient and homogeneous layers.
采用方向滤波编码法压缩数字化天气雷达回波的原始资料。
In this paper, the directional filtering method is used for compressing the primitive data of the digital weather radar echoes.
本文研究了激光雷达相关理论及激光测距方法，基于脉冲激光测距法，给出了一种结构简单，可同时处理多路回波信号的测距电路。
Then this board can provide distance information for bistatic laser radar targeting system. This thesis is devoted to the research on the correlation theory of lidar and the methods of laser ranging.
本文研究了激光雷达相关理论及激光测距方法，基于脉冲激光测距法，给出了一种结构简单，可同时处理多路回波信号的测距电路。
Then this board can provide distance information for bistatic laser radar targeting system. This thesis is devoted to the research on the correlation theory of lidar and the methods of laser ranging.
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