②脉冲选通门式(range gated)：脉冲发射与A型仪类似。接收器中设选通门，其门宽及浅深均属可调(门宽从O.5mm至20mm间可调；门深：从Omm的皮肤面至20cm处可调)。
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range-gated laser 距离选通激光器
range-gated generator 距离选通脉冲发生器 ; 间隔选通脉冲产生器
range gated detection 距离选通探测
range-gated imaging technique 距离选通成像技术
range-gated doppler 选通脉冲范围多普勒
underwater laser range-gated imaging system 距离选通激光水下成像系统
Range-gated 距离选通
range-gated CCD 距离选通CCD
At least one receiving transducer is positioned to receive scattered energy to generate a range gated Doppler signal.
至少一个接收传感器定位成接收所散射的能量从而生成范围选通多普勒信号。
The key research tasks which laser range gated (LRG) imaging system need to focus on are discussed. The development trends of range gated active imaging are predicted.
介绍了三种典型的距离选通激光成像系统，讨论了距离选通激光成像系统今后需要重点研究的课题，展望了距离选通激光成像系统的发展趋势。
The processing subsystem is responsive to the transit time signal and the range gated Doppler signal and configured to generate a velocity profile and a mean velocity of the fluid in the conduit.
该处理子系统响应于所述通过时间信号和范围选通多普勒信号，并且配置以为所述管道中流动的流体生成速度分布和平均速度。
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