1) Doppler frequency signal
多普勒频率信号
2) Audio Doppler signal
音频多普勒信号
3) Doppler spectrum signal
多普勒频谱信号
4) Doppler frequency
多普勒频率
1.
Based on traditional techniques of passive location,single-station passive location is achieved by adding observation information,which is bearing and Doppler frequency joint location method.
在传统的无源定位技术基础之上,采用增加观测信息量的方法来实现单站无源定位,即方位/多普勒频率联合定位技术。
2.
When detecting the high-speed moving target by using phase-coded signals,Doppler frequency compensation is necessary because of the Doppler frequency sensitivity of phase-coded signals.
利用相位编码信号探测高速运动目标时,存在多普勒频率敏感性问题,需要对多普勒频率进行补偿。
3.
Amplitude distortion and phase distortion of signal caused by radar transmitter and receiver and Doppler frequency produced by target radical movement are three key factors that influence the performance of pulse compression.
由雷达发射、接收系统导致的信号幅度、相位失真以及由目标径向速度导致的目标多普勒频率是影响脉冲压缩性能的三个主要因素。
5) 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。
6) 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。
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