1) Doppler information
多普勒信息
1.
The weight vector of beamforming is estimated by Doppler information of the signal first, then it is approximated by RBFNN to carry out the blind optimizing beamforming.
该方法首先在不知道任何基阵方向向量先验知识的情况下,利用信号的多普勒信息估计波束形成的权矢量。
2) Doppler signal
多普勒信号
1.
The model of Doppler signal was constructed at first,then the design of wall filter and AR Models of unneeded filtering clutter were analyzed and various filter that can suppress wall signal were mainly analyzed and their capability were compared simply in this paper.
本文首先给出了多普勒信号的模型,然后简单分析了壁滤波器设计以及无需滤波的AR模型法。
2.
The system is constructed for analyzing Doppler signals from umbilical arteries.
文章在笔记本计算机的硬件基础上建立了脐血流多普勒信号多参数分析的便携式系统。
3.
The applicatin of correlative examining and testing technology to the Doppler signal demodulation of radio fuze is discussed.
探讨了相关检测技术在无线电引信多普勒信号检波的应用,从理论上分析了相关器的去噪特性,设计了相关器的参数并进行了仿真及试验。
3) Doppler fuze
多普勒引信
1.
The simulation principle of the radar echo of pulse-Doppler fuze with side-lobe restriction in Ku -band is studied,and the basic frame of once-through simulating test equipments is set up.
针对Ｋｕ波段带有旁瓣抑制的纳秒级脉冲多普勒引信，对目标一次性穿越天线主瓣的回波仿真技术方案进行探讨。
2.
Target detection is an important study content of MMW Doppler fuze signal processing,power spectrum technique in tradition can not only open out the high-step statistical information of MMW targets echo signal but also eliminate the effect of the noise signal and clutter.
目标检测是毫米波多普勒引信信号处理的重要内容,在目标检测过程中,传统功率谱等技术不能充分揭示隐含于目标回波中的高阶统计信息,不能消除噪声和杂波的影响,不利于目标特征分析及检测,因此提出了基于双谱分析的毫米波多普勒引信目标检测技术,利用双谱及双谱对角切片进行特征分析及优化,通过对实测毫米波多普勒引信数据进行理论分析和试验仿真,结果表明采用双谱分析的毫米波多普勒引信目标检测方法有效可行。
3.
The principle and system composition of continuous wave Doppler fuze was analyzed in the view point of system function,and the circuit was disintegrated into comparatively unattached subsystem.
连续波多普勒引信工作电路,其原理分析比较复杂,从系统功能的角度分析了连续波多普勒引信的原理和系统组成,并分解为相对独立的分系统电路模块,重点研究了正半周增幅电路的工作原理,PSPICE采用按照从上而下、逐步细化的方法,得到了信号在引信系统当中的具体流程,为引信对外部输入信号(干扰、抗干扰)的研究提供了仿真平台。
4) fuze Doppler signal
引信多普勒信号
1.
It gives the predominance of fuze Doppler signal s analyses based on wavelet transform in comparison with short time fourier transform,discusses the reasons and methods of fuze Doppler signal s analyses using Daubechies wavelet as mother wavelet at length and shows the conclusion by simulated diagrams.
简单介绍了精确分析目标信息特征的必要性,通过对比小波变换和短时傅立叶变换,说明了小波变换用于分析引信多普勒信号的优势所在,具体论述以Daubech ies小波作为基函数,用于引信多普勒信号分析的原因和方法,并在文章的结尾通过仿真给出了直观对比。
5) Doppler ultrasound signals
超声多普勒信号
1.
Simulation studies on Doppler ultrasound signals in asymmetric stenosed vessels;
单边狭窄血管中超声多普勒信号的仿真研究
6) Doppler signal model
多普勒信号模型
补充资料：彩色多普勒血流成像
彩色多普勒血流成像
超声学检查方法之一。又称“彩色多普勒血流图”。应用脉冲超声多普勒原理，在二维和M型超声心动图基础上，用彩色实时显示血流的方向和相对速度，提供心脏和大血管内血流的时间和空间信息的超声诊断技术，是80年代多普勒超声心动图的重要进展。人体和血流的反射信号经结构分析和血流分析处理后，可在显示屏上显现的黑白实时二维声像图上叠加彩色实时血流影像。还可与M型超声心动图、脉冲波和连续波声谱图显示同时进行。其特点是可同时显示心腔某一断面上全部异常血流束的分布及数目；表现血流途径及方向，辨别层流、湍流和涡流；测量血流束的面积、长度、宽度；显示结构异常与血液动力学异常的关系。临床应用于心脏瓣膜病、先天性心脏病、心肌病及心脏肿瘤等无创性诊断，提高了诊断的敏感度和准确度。此技术方法尚有混叠现象及显示帧数受限的缺点。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条