摘要
本文给出了距离选通光子计数系统的信噪比模型并讨论了激光回波与探测器选通门之间的同步问题。距离选通系统中存在各种器件延时,只有精确测量系统的器件延时,才能提高选通系统的同步精度。文章提出一种测量距离选通系统时间延迟的方法,并阐述其对系统信噪比的贡献。
This article provides the signal-to-noise ratio module of the range-gating photon counting system and discusses the synchronization between the laser echo wave and the detector gate.In order to raise the system synchronization precision,we have to accurately pinpoint the the system time delay while the system is full of all kinds of delays.We introduce a way of measuring the time delay and discuss its improvement to the system SNR.
出处
《微计算机信息》
2010年第10期60-61,75,共3页
Control & Automation
关键词
距离选通
光子计数
信噪比
后向散射
range gating photon counting signal-to-noise ratio back scattering
