应用脉冲式多普勒超声心动图检测40例正常儿童肺静脉血流频谱。
Pulsed Deppler echocardiography was used to detect the pulmonary venous flow pattern (PVFP) in 40normal children.
方法采用二维、脉冲式多普勒超声检测DSE患者左室收缩和舒张功能。
Methods The left ventricular systolic and diastolic function of patients was evaluated using two-dimensional and pulse Doppler echocardiography by DSE.
本文建立了脉冲多普勒雷达导引头仿真系统，利用该仿真系统评估了分别在压制式干扰和欺骗式干扰条件下导引头的抗干扰能力。
A pulse Doppler radar seeker simulation system is established, by using the simulation system the performance of pulse Doppler radar seeker is evaluated when jammed.
并实现了用相位多普勒粒子分析仪对脉冲式雾化液滴性能参数的测试。
The spray characteristics of liquid droplets supplied pulsed is measured by a Phase Doppler Particle Analyzer.
分析了星载聚束式合成孔径雷达(SAR)的信号特性，主要研究了多普勒中心频率、多普勒带宽以及脉冲重复频率(PRF)与斜视角的关系。
Signal properties of spaceborne spotlight SAR were discussed. The relationships of centroid Doppler, Doppler bandwidth and PRF (Pluse Repetition Frequency) with squint Angle were analyzed.
分析了星载聚束式合成孔径雷达(SAR)的信号特性，主要研究了多普勒中心频率、多普勒带宽以及脉冲重复频率(PRF)与斜视角的关系。
Signal properties of spaceborne spotlight SAR were discussed. The relationships of centroid Doppler, Doppler bandwidth and PRF (Pluse Repetition Frequency) with squint Angle were analyzed.
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