High frequency color Doppler ultrasonography detection of special sites eccyesis gestation sac;
高频彩色多普勒超声诊断特殊位置异位妊娠囊
The Haemodynamics of Color Doppler Ultrasound in Diagnosis of Diabetic Retina Pathological Changes;
彩色多普勒诊断糖尿病视网膜病变的血流动力学
Diagnostic value of color doppler ultrasonography in venous plexus thrombosis of calf muscle;
彩色多普勒超声对小腿肌间静脉丛血栓的诊断
The value of color Doppler flow imaging in diagnosis of subclavian steal syndrome;
彩色多普勒超声对锁骨下动脉窃血综合征的诊断价值
Application of atrial septal plane combined with color Doppler flow imaging in atrial septal defect diagnosis;
房间隔切面叠加彩色多普勒血流显像在房间隔缺损显像中的应用
The diagnostic value of color Doppler in metastatic adrena tumor;
肾上腺转移性肿瘤的彩色多普勒超声诊断及临床价值
Research and analysis of micro-Doppler based on precession of ballistic missile;
弹道目标进动特性的微多普勒研究与特征分析
Research on precession of ballistic missile warhead based on micro-Doppler analysis;
基于微多普勒分析的弹道导弹目标进动特性研究
Research on the influence of velocity on micro-Doppler and its compensation;
速度对微多普勒的影响及其补偿研究
Based on their difference of polarization characteristics,a novel method for discrimination and suppression of active-decoys jamming in Doppler domain is proposed.
在此基础上,提出了一种在慢时间多普勒域进行有源假目标干扰鉴别和对消的原理和方法,并给出了抗有源假目标干扰的PolSAR成像的工程实现流程。
Multiple target distinguishing technique based on Doppler spectrum;
基于多普勒谱的多目标鉴别技术
Then ,with the introduction of the conceptions of lowpass-spectrum width and bandpass-spectrum width,Doppler spectrum features are in- vestigated for three typical micro-motion targets.
首先建立了转动线形目标和进动锥形目标的回波模型,分析了三种典型微动目标的多普勒谱,引入低通谱宽和带通谱宽的概念,推导了机动点目标低通谱宽以及转动线形目标带通谱宽表达式,对进动锥形目标的低通谱宽进行了数值分析,给出了基于多普勒谱的微动参数估计方法,最后进行了仿真,证明了理论分析的正确性。
According to Barrick s forst-order and second-order sea echo radar cross section equations of HF radar,combined with ocean wave spectrum and the equal-frequence contour line,the narrow-beam sea echo doppler spectrum was simulated.
根据Barrick导出的海面回波的一阶和二阶高频雷达截面方程,结合海浪能量谱,利用等频线方程,模拟出窄波束高频雷达的海面回波多普勒谱,并对模拟结果进行了分析。
Doppler inertial system
多普勒惯性系统多普勒惯性系统
ADCP( acoustic doppler current profiler )
声学多普勒海流剖面仪
continuous-wave laser Doppler radar
连续波激光多普勒雷达
satellite Doppler shift measurement
卫星多普勒频移测量
passive ranging Doppler
无源测距多普勒雷达
Doppler-inertial navigation equipment
多普勒－惯性导航装置
Meteorological pulse-Doppler radar
气象脉冲多普勒雷达
Doppler echocardiogram
多普勒超声波心动图
Doppler echocardiograph
多普勒回声心动图仪
Doppler ultrasonic angiograph
多普勒超声血管显像仪
matched-filter Doppler direction finding
匹配滤波器多普勒测向
Doppler two-color laser anemometer
多普勒双色激光风速计
supersonic wave Doppler diagnosing instrument
超声波多普勒诊断仪
ultrasonic liquid Doppler flowmeter
超声多普勒液体流量计
ultrasonic Doppler blood flow meter
超声多普勒血液流量计
active Doppler velocity sensor
主动多普勒速度传感器
satellite-Doppler-Sonar navigation
卫星多普勒声呐导航
satellite Doppler measurement
人造卫星多普勒观测
