微多普勒现象是自然界广泛存在的一种现象。
The micro-Doppler exists widely in the nature, which is induced by the micro-motion dynamics.
微多普勒效应在目标探测、识别中的应用潜力受到日益关注。
There is a developing interest in the potential application of micro-Doppler effect for target detection and recognition.
正弦调制相位信号是微动目标雷达回波微多普勒信号的一般形式。
Signals with sinusoid modulated phase is the general form of micro-Doppler signals in radar echoes from targets with micro-motions.
人运动的雷达散射回波的获取是研究人微多普勒特征的关键问题。
How to get the proper radar echo is a key problem in research of the micro-doppler features of human beings.
建立了激光微多普勒效应探测系统，开展了激光微多普勒效应探测运动目标复合振动的实验研究。
The experiment research on laser micro-Doppler effect for detecting complex vibration of moving target is developed.
人体或其他生命体通常按照一定的速度、步幅和步频走动或者跑动，因此其谱图呈现出微多普勒特性。
Since the human beings and the other creatures usually walk or run with a constant velocity, stride and gait frequency, there are some Micro-Doppler signatures on their spectrums.
微多普勒为雷达目标识别提供了一种新的思路和方法，而目标的平动速度会影响微多普勒信息的提取。
Micro-Doppler provides a new way for radar target recognition while the translation velocity affects the extraction of micro-Doppler information.
采用了短时傅里叶变换方法对仿真信号进行了时频分析，得到了能够较好地反映目标特征的微多普勒图像。
Short time Fourier transform was used to analyze the simulated signal in the time-frequency domain, a micro-Doppler image that can demonstrate the target characteristics was generated.
本论文主要研究采用多种特征提取方法对激光微多普勒信号进行时-频分析、多尺度分析和相关变换技术。
This paper includes studying many feature extraction methods such as time-frequency method, multi-resolution analysis and correlation analysis to analyze the Micro-Doppler signal.
激光雷达微多普勒效应在目标探测、识别中由于测量精度高、抗干扰能力强等优点，具有广阔的应用前景。
Laser radar micro-Doppler effect has good application prospects in the detection and identification of for it's high measurement precision and strong anti-interference ability.
微动目标电磁散射响应中包含了精细的微多普勒特征信息，因此从雷达特征信号中可以推断出微动目标的特性。
The backscatter of a target with micro-motions contains fine micro-Doppler features, which enables us to determine some unique properties of the target.
文中在介绍弹头和诱饵运动特性的基础上，引入了微多普勒概念，建立了弹头和诱饵的微动模型，并对其微多普勒进行了理论推导。
In this paper, the concepts concerned with micro-Doppler are introduced, the micro-motion models of the cone-shaped warhead and decoy are built, and the theoretical der.
目的应用经颅多普勒超声（TCD）动态观察脑保护滤网下颈动脉支架成形术中各操作阶段所产生的微栓子信号（MES）数量。
Objective Transcranial Doppler (TCD) can be used to monitor microembolic signals (MES) in different procedure phases during filter-protected carotid angioplasty and stenting(CAS).
结论：彩色多普勒对存在微转移的乳腺癌淋巴结有可观的诊断指征。
Conclusion: Color Doppler presence of lymph node micrometastasis in breast cancer diagnosis has considerable indications.
结果 ：在回顾分析有淋巴结微转移的19例患者的彩色多普勒成像中，15例得到丰富的形态学改变或血流显示，且有12例获得动脉血流频谱。
Results : There were 19 cases of lymph node micrometastases in 15 patients with the rich in color Doppler and morphological changes in blood flow , and 12 patients were arterial flow spectrum .
利用心脏多普勒超声技术，研究小组进一步检测了在择期PCI过程中超声检测的微栓塞的发生率和心肌坏死的发生率之间的关系。
Using intracoronary Doppler ultrasound, the team investigated further by looking at the frequency of Doppler-detected microembolism in relation to the incidence of myonecrosis during elective PCI.
目的：评价彩色多普勒对乳腺癌前哨淋巴结微转移的诊断价值。
Objective: To evaluate the diagnostic value of color Doppler in diagnosing breast cancer micrometastases of sentinel lymph nodes.
方法：采用多普勒超声分别测定肝癌灌注32 磷玻璃微球前后肿瘤血流速度及肿瘤体积的变化。
Methods : The velocity of tumor blood flow and volume of tumor were measured with Doppler ultrasonography.
本文从基本原理和工程实际出发，对用于微尺度风切变场探测的多普勒激光雷达系统进行了初步研究。
In this paper, on the basis of the basic principles and practical engineering, the Doppler lidar system for microscale wind shear-field detection is studied.
方法：应用显微电视录像技术和激光多普勒血流仪，观察大学生冷刺激过程中甲襞微循环及微区血流量的动态变化。
Methods:The changes in nailfold microcirculation and microlocalblood flow were studied by a vital microscope with TV recorder and leser Doppler flowmetry in 25 minutes after cold stimulation.
方法：应用显微电视录像技术和激光多普勒血流仪，观察大学生冷刺激过程中甲襞微循环及微区血流量的动态变化。
Methods:The changes in nailfold microcirculation and microlocalblood flow were studied by a vital microscope with TV recorder and leser Doppler flowmetry in 25 minutes after cold stimulation.
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