该零碎应用发射超声波与反射回波时间差来测量待测间隔。
The launch system USES ultrasonic echo and reflection of the time difference to measure the distance test.
回波时间最长的方向为最小地应力方向，最大地应力方向与之垂直。
The direction of longest echo time is the direction of minimum earth stress, and the direction of greatest earth stress is perpendicular to it.
T1加权像低信号区在T2加权像上随回波时间延长信号仍呈低信号而提示钙化。
The low signal on T1 WI was still low signal intensity on T2 WI which suggested calcification.
通过对24例胸腺瘤的MRI图像分析，归纳出胸腺瘤在MRI各回波时间图像上的信号强度及四种信号变化模式。
The MRI findings of 24 cases of thymomas were analysed, The signal intensities and four signal change patterns on multiecho sequence imaging were established.
回声测深仪是用来测量水深的一种声学测量设备，其以水中超声波的传播速度为确定条件，利用发射波与反射回波时间差来测量水深。
Echo Sounder is a kind of acoustic measuring depth equipment, which can measure depth with the time between transmitted wave and echo on condition in which the speed of ultrasonic is fixed.
在高分辨条件下，多周期积累时间内目标的运动会造成回波包络的跨单元走动，而距离走动带来了检测性能的下降。
In high range resolution conditions, the migration of moving target causes the migration of echo envelop within multicycle integration time and brings the decline of detection performance.
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.
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.
壁厚测量是通过测量界面回波间隔时间来实现的。
The wall thickness is determined by measuring the interval time of echoes at the interfaces.
光子计数成像激光雷达需要测量一个激光主波和与之对应的多个回波之间的时间间隔，并具有高精度。
The time intervals between laser main pulse and the corresponding multiple echoes were needed to measure in photon counting imaging lidar, and the system had to have high precision.
软组织的形变信息是通过超声回波延迟时间得到的。
The deformation information is obtained from ultrasonic echo time delay.
这些信号分别为模拟回波信号的生成提供了天线增益大小、时间基准、相位基准和载波频率大小等重要的参考信息。
These signals provide an important reference of the gain of antenna, the time reference, the phase reference and the frequency of carrier wave for generating stimulant echo signal.
同时由光子回波信号测得由声子作用引起的波包退相特征时间。
Moreover, the photon echo signal gave the dephasing time due to the phonon interaction.
雷达是通过接收一定时间间隔内电磁回波成像，它与可见光成像不同。
Radar imaging geometry, which performs imaging in the direction of slanting range at the sample time of electromagnetic echo reflection, is quite different from optical imagery.
目的：分析TE（回波延迟时间）参数变化对MR颅脑图像分割的影响。
Objective:To analyze the variety of parameter TE(time to echo), which should influence the segmentation of MR brain images.
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。
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.
较强的降水时段和有效的连续降水将大幅度消弱回波强度，并使其较长时间地维持在低指数状态，其相应能见度也大为改善。
Relatively strong rainfall period and effectively continuous rainfall can make the echo intensity decrease greatly and remain the low index for a long time, and the visibility turns well.
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 and peak time detecting technique, the arrival time of ultrasonic echo can be correctly detected.
该方法研究了幅度起伏和时间漂移条件下回波包络模型，并对模型进行了简化处理，可以更准确地计算超声波渡越时间。
This method researches the echo envelope model which has been simplified in this paper under range wave and time excursion, and can compute the transmitting time more accurately.
借助时间分辨率为6分钟的新一代多普勒雷达回波、卫星资料和常规观测资料对“黄蜂”在登陆过程中路径变化的情况进行了分析。
Track variation of severe tropical storm "Vongfong" is analysed by using radar images of 6 min interval, satellite and conventional data during landing.
采用时间增益补偿技术，补偿超声波在空气中的衰减，减少回波信号的起伏；由有源全波整流电路和微分电路等组成峰值时间检测电路，可正确检测回波的峰值到达时间。
The peak time detecting circuit which is composed of full-wave rectification circuit and differential circuit can detect the reach time of echo signal accurately.
该方法通过对截获的雷达发射信号在慢时间域进行正弦相位调制，得到了等效微动点的回波信号。
In this method, the echo of the synthesized equivalent micro-motion point is obtained by modulating the phase of intercepted radar signal with sinusoid in the slow time.
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.
针对目标回波检测，本文采用了长时间相干积累的方法，仿真结果表明该方法提高了目标回波积累峰值；
Aiming at target echo signals detection, long-time coherent accumulation processing is adopted. Simulation results show that the method improves the power of target echo signals.
针对目标回波检测，本文采用了长时间相干积累的方法，仿真结果表明该方法提高了目标回波积累峰值；
Aiming at target echo signals detection, long-time coherent accumulation processing is adopted. Simulation results show that the method improves the power of target echo signals.
应用推荐