lightsource meaning in English
光源
Examples
- Abstract : based on the electronic focus technology development of state - of - the - art , the paper suggested a complete apparatus s cheme ofauto - focus based on sspd ( self - scanned photodiode array ) and 8098 singl e chipprocessor , giving out a focus criterion algorithm based on image high freq uencystatistics . the function of auto - focus of both reflected and transparent o pticalmicroscope was realized . meanwhile some corresponding problems such as sta bility of lightsource , step motor driving etc . were also discussed , which greatly improved the accuracy andreliability of the system
文摘:在介绍与分析了国内外电子调焦系统的技术发展与现状的基础上，提出了一种基于sspd （自扫描光电二极管列阵）与8098单片微处理器自动调焦的整体技术方案，给出了基于图像高频成分统计的聚焦判识算法，在此基础上实现了反射式与透射式光学显微镜的自动调焦，同时对系统的可靠性有关的其它相关问题如光源稳定性、步进电机驱动等问题也进行了讨论。 - Then we introduce the character of the atmosphere channel , which we emphasized on the atmosphere scatter , absorption and scintillation ' s effect on the laser beam . in chapter , we explain why we used cassegrain telescope to collect the optical signal at first , then the lightsource , detector , front amplifier used in optical communication has been compared to that of fiber communication , the noise including shot noise , thermal noise and background light noise has been explained here for analysis the snr and ber in the next section
在第三章介绍无线光接入系统的光收发单元，采用多孔径卡塞格伦式的收发天线对消除减小大气湍流影响有较大作用，针对大气信道的特点无线光系统收发单元在光源、光探测器、前置放大电路上存在许多有别于光纤通信的技术，同时还阐述了光接收机包括背景噪声的噪声机制和接收灵敏度、误码率等指标，最后给出了一个整个传送链路的功率预算。