QQ客服 官方微博 反馈留言

	Parallel analog channels for oversampling scientific CCD camera signal
	Qiu Hong-yun ; Liu Yang ; Zhang En-yao ; Sun Li-qun ; Tian Qian
	2010-05-10 ; 2010-05-10
关键词	Practical Experimental/ CCD image sensors parallel processing signal denoising signal sampling/ parallel analog channels oversampling scientific CCD camera signal noise reduction method noise distribution programmer gain amplifier power supply noise higher AD conversion rate/ B7230G Image sensors B2570H Other field effect integrated circuits B6140 Signal processing and detection
中文摘要	A noise reduction method of using multiple identical analog channels to over/sample the CCD signal is investigated experimentally. This method is based on the irrelevant noise characters in each part of the CCD camera's analog channel. The noise distribution in the circuit is tested and the noise improving factors are 1.354 and 1.65 for the two parallel connections and three parallel connections respectively. The improving factor agrees with the theory value. Experiment shows that the improving factor decreases with the increase of the gain of the programmer gain amplifier in the analog channel. This phenomenon and the difference between the experiment value and the theory value of improving factor are analyzed. The power supply noise, higher AD conversion rate and temperature rising are the major factors of the difference.
语种	中文 ; 中文
出版者	Editorial Board of Journal of Applied Optics ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/24518]
专题	清华大学
推荐引用方式 GB/T 7714	Qiu Hong-yun,Liu Yang,Zhang En-yao,et al. Parallel analog channels for oversampling scientific CCD camera signal[J],2010, 2010.
APA	Qiu Hong-yun,Liu Yang,Zhang En-yao,Sun Li-qun,&Tian Qian.(2010).Parallel analog channels for oversampling scientific CCD camera signal..
MLA	Qiu Hong-yun,et al."Parallel analog channels for oversampling scientific CCD camera signal".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。