用激光回波脉冲控制电子快门来操纵摄像机的曝光时间,是抑制背景噪声的一种有效方法。
Steering exposure time of a camera through control electron shutter with laser echo pulse is an effective method for inhibiting background noise.
回顾了泡沫夹层结构常用的无损检测方法:空气耦合超声方法、脉冲回波超声方法以及激光错位散斑干涉方法。
The popular non destructive test methods for the foam-cored sandwich structure are reviewed; including air coupled ultrasonic method, pulse-echo ultrasonic method and shearogragh method.
时间反转处理(trp)是利用这种聚焦特性的信号处理方法,它在水声通信、主动声纳检测这类脉冲—回波型领域的应用研究越来越受到重视。
Time Reversal processing (TRP) is a signal processing method based on the focusing property. It attached more attention in underwater acoustic communication, active detection and so on.
该文分别以理想矩形和高斯钟形脉冲作为雷达回波信号模型,通过仿真研究,详细讨论了NMTI方法在宽带雷达中的应用。
In this paper, ideal rectangle and Gaussian shape pulse act as radar echo signal model. Through simulation research, application of NMTI method in wideband radar systems is discussed in detail.
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.
这两种方法既可用于多段线性调频连续波探测回波的积累检测,也可用于多个相参脉冲信号的积累与频率估计。
The new methods can be used in both detection of FMCW echo and frequency estimation of correlative pulse train.
该方法利用单脉冲雷达空间双路接收的特点,采用时-空二维联合处理的方法对回波信号进行处理。
This method utilizes the multiple receiver of monopulse tracking radar, and adopts the time-space processing method to process the echo.
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.
阐释了单个脉冲回波信号和多周期脉冲串回波信号,利用积累来提高检测性能的多种方法。
Some methods of enhancing detection performance in dealing with the single pulse echo signal and the multi-period pulse bunch echo signal by accumulating are summarized.
本装置用超声脉冲回波与定标指数波形比较的方法测量超声衰减。
An instrument for measuring ultrasonic attenuation by means of comparing the ultrasonic pulse echo with a calibrated exponential decay wave-form is described.
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.
本文报道了一种基于脉冲回波相位谱的超声波速度测量方法,并给出了它的详细理论推导过程。
This paper presents the development of a pulse-echo measurement method, based on the use of a phase spectrum to determine the ultrasonic wave velocity. A detailed descripsion of the theory is given.
仿真与实际测试结果表明,该方法能有效提取远距离微弱激光脉冲回波信号,从而提高系统信噪比,扩大了系统原有的测程。
Simulation and actual test result shows that the new arithmetic could detect weak laser pulse signal effectively, increase the SNR and expand measuring range of laser range finder.
本文提出了一种利用大动态范围脉冲幅度自动增益控制技术和数字波形存储技术,实现水下目标信号存储和目标回波波形模拟的方法。
A method for acoustic signal storage and simulation of underwater target is presented in this paper. The techniques of large dynamic pulse gain control and digital waveform storage are applied.
利用电离层垂直探测中的组合脉冲控制和回波相位测量分析方法,开发并实现了一种电离层扰动观测模式。
This paper presents and realizes an ionospheric disturbance observation mode by using combinational pulses control and echo's phase measurement analysis in ionospheric vertical sounding.
利用电离层垂直探测中的组合脉冲控制和回波相位测量分析方法,开发并实现了一种电离层扰动观测模式。
This paper presents and realizes an ionospheric disturbance observation mode by using combinational pulses control and echo's phase measurement analysis in ionospheric vertical sounding.
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