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faint optical signal
相关语句
  微弱光信号
     The Application of Analog Multiplier MLT04 in the High Accuracy Phase Lock-in Detecting Circuit for Faint Optical Signal
     模拟乘法器MLT04在高精度微弱光信号锁相检测电路中的应用
短句来源
     The basic principle of airbornemue-green laser bathymetry,themaximum penetrationdepth and depth measurement accuracy are discussed. The problem of choice of airborne laser anddetect ion of faint optical signal for a large dynamic range are studied. The most significantinternational airborne blue-green laser bathymetric systems are compared.
     本文论述了机载蓝绿激光海洋测深的基本原理,讨论了最大探测深度及测深精度,研究了机载激光器选择及大动态范围微弱光信号检测问题,对各国主要机载激光海洋测深系统进行了比较,并分析了我国应用该项技术的紧迫性和可行性。
短句来源
     We introduced a high-accuracy phase lock-in detecting circuit for faint optical signal,in which MLT04 was used. The circuit was based on the phase lock-in detecting principle,which has better frequency alternative and less phase influence,thus it can be used as a good way to abstract the amplitude information of the useful electric signal after the photoelectric conversion.
     介绍了一种基于M LT 04的高精度微弱光信号模拟锁相解调电路,它利用锁相检测原理,解调时频率选择性好,相位因素影响小,可以很好地提取转换后有用电信号的幅值信息。
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The basic principle of airbornemue-green laser bathymetry,themaximum penetrationdepth and depth measurement accuracy are discussed.The problem of choice of airborne laser anddetect ion of faint optical signal for a large dynamic range are studied.The most significantinternational airborne blue-green laser bathymetric systems are compared.The importance andfeasibility of applying this technology in our country is analyzed.

本文论述了机载蓝绿激光海洋测深的基本原理,讨论了最大探测深度及测深精度,研究了机载激光器选择及大动态范围微弱光信号检测问题,对各国主要机载激光海洋测深系统进行了比较,并分析了我国应用该项技术的紧迫性和可行性。

In this article,the working principle of a high sensitivity optiical receiving circuit applying to the non - contact measurement of IOP based on laser interferometry is introduced in detail,and the optoelectronic detector,filter and amplifier in which the high sensitivity optical receiving circuit are designed and rese - arched.According to the theoretic analysis and experimental results,the system can reliably detect the faint - optical signal of30μW,which solves...

In this article,the working principle of a high sensitivity optiical receiving circuit applying to the non - contact measurement of IOP based on laser interferometry is introduced in detail,and the optoelectronic detector,filter and amplifier in which the high sensitivity optical receiving circuit are designed and rese - arched.According to the theoretic analysis and experimental results,the system can reliably detect the faint - optical signal of30μW,which solves an essential problem in the research of non - contact measurement of IOP based on laser interferometry.

详细介绍了一种应用于激光干涉式非接触眼压测量的高灵敏度光接收电路的工作原理,并对其中光电检测、带通滤波和放大部分的设计进行了研究。通过对系统进行理论分析和科学实验,表明该系统可以对低于30nW的微弱光信号进行高灵敏度的检测,进而解决了激光干涉式非接触眼压测量研究中的一个实质性的问题。

In the imaging of the low light level image intensifiers,the time and space domain noise in the image signal not only limits the lowest illuminance of the system but also causes the image display with random particle glitter. Precise testing method of faint optical signal comes into being while multiplier phototube appears with low noise and high gain. It is testified that the noise of image intensifier can be tested accurately and intuitively by this method.

在微光像增强器成像中 ,迭加在图像上的时空域噪声 ,不仅限制系统的可工作最低照度 ,而且使显示图像有随机蠕动颗粒闪烁的外观。随着低噪声、高增益的光电倍增管的出现 ,比较精确地测量微弱光信号成为可能。在此基础上提出了采用光电倍增管来测试像增强器信噪比的方法。实验中发现 ,这种方法能比较准确并直观地反映像增强器噪声的大小

 
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