In the a high frame rate (HFR) ultrasonic imaging system, the weighting process by limited diffraction beams on echo signal takes the most of the calculation time for constructing an image.
在高帧率超声成像算法中，对回波信号进行有限衍射波束加权处理占用了成像中大部分计算时间。
Based on studying the generating and receiving circuit of ultrasonics, this dissertation analyzes that the key to improve measuring accuracy is how to seek the starting time of ultrasonic echo signal.
在研究了超声波信号的产生、接收电路的基础上，分析了提高测量精度的关键在于如何精确地寻找到超声波回波信号的起点时刻。
A method about acquisition and processing of ultrasonic echo signal in liquid level measurement is introduced.
介绍了一种在液位测量中超声回波信号的采集与处理方法。
The measurement of crack height by ultrasonic edge peak echo method and digital signal processing was described, and the results were given.
介绍采用数字信号处理的超声端点反射回波声程测量裂纹高度的方法研究和结果。
For problems existed when processing echo signal of ultrasonic distance measuring system, two new ways of echo signal processing to improve measure precision are proposed.
在分析超声波测距系统回波信号处理存在问题的基础上，提出了两种提高测量精度的回波信号处理方法。
How to make classify and recognize echo signal of ultrasonic detection takes information of interface bonding quality is the key and difficulty of ultrasonic detection of thin composite materials.
如何对反映粘接质量的超声检测回波信号进行分类识别，是薄板复合材料超声检测的关键也是难点之一。
The result shows that in order to obtain the strong echo signal, a suitable selection of the ultrasonic transducer operating frequency is necessary.
由此表明，选择合适的声发射换能器，有助于提高液位检测回波信号的强度。
This paper attempts to preprocess ultrasonic signal by wavelet filtering based on the mathematical model of the ultrasonic echo, extracts weak echoes from signal with high noise background.
在超声反射回波的数学模型基础上，利用小波滤波方法对超声信号进行预处理，提取强噪声背景中的弱回波信号。
Due to these correcting devices, the signal of ultrasonic echo waves becomes relatively complicated.
由于引入了这些校正装置，超声回波信号变得相对复杂。
For the detection and processing of ultrasonic echo signal, the method proposed by this paper is able to improve the whole precision on a certain technical condition.
对于超声回波信号的检测与处理，本文提出的方法在一定的技术条件下可以实现回波信号整体检测精度的提高。
The ultrasonic defect echo of a austenite stainless steel with coarse grainswas acqiuired and processed using a developed computerized ultrasonic signal analysissystem.
采用计算机化超声信号分析系统，对奥氏体不锈钢粗晶材料缺陷的超声回波信号进行采集和加工。
Using the time-gain compensation technique to compensate for ultrasonic waves weaking when transmitting in the air, and reduce the fluctuation of echo signal.
采用了时间增益补偿技术和峰值时间检测技术，可正确检测超声波回波的到达时间。
Using the time-gain compensation technique to compensate for ultrasonic waves weaking when transmitting in the air, and reduce the fluctuation of echo signal.
采用了时间增益补偿技术和峰值时间检测技术，可正确检测超声波回波的到达时间。
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