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长春光学精密机械与物... [2]
物理研究所 [1]
云南天文台 [1]
沈阳自动化研究所 [1]
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期刊论文 [3]
会议论文 [2]
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2016 [1]
2013 [1]
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2001 [1]
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天文学 [1]
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基于超导探测器的激光测距系统作用距离分析
期刊论文
OAI收割
光学学报(Acta Optica Sinica), 2016, 卷号: 36, 期号: 3, 页码: 29-37
作者:
薛莉
;
翟东升
;
李语强
;
张蜡宝
;
李祝莲
  |  
收藏
  |  
浏览/下载:24/0
  |  
提交时间:2017/01/12
探测器
激光测距
超导纳米线单光子探测器
信噪比
回波光子数
空间碎片
Feedback-induced nonlinearity and superconducting on-chip quantum optics
期刊论文
OAI收割
PHYSICAL REVIEW A, 2013, 卷号: 88, 期号: 6
作者:
Liu, Zhong-Peng
;
Wang, Hui
;
Zhang J(张靖)
;
Liu, Yu-xi
;
Wu RB(吴热冰)
收藏
  |  
浏览/下载:33/0
  |  
提交时间:2014/04/16
PHOTON NUMBER
CAVITY
CIRCUITS
SYSTEMS
ELECTRODYNAMICS
AMPLIFICATION
ENTANGLEMENT
BISTABILITY
VACUUM
STATES
Study on spectrograph for ionosphere: A broadband imaging instrument prototype for far-ultraviolet (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
作者:
Wang S.-R.
;
Lin G.-Y.
;
Yu L.
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浏览/下载:35/0
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提交时间:2013/03/25
Current research on space-based exploration for the ionosphere needs more advanced technologies. Because the spectral signals in the ionosphere distributing basically in the far-ultraviolet waveband are very weak. Usual spectrometer structures and detectors such as CCD can't receive enough information. Based on this principle of atmospheric sounding
the imaging spectrometer prototype for ionosphere detection application was designed to solve the problem. This prototype consists of the telescope and the imaging spectrometer. The simple structure and small number of mirrors can help higher transmission efficiency be achieved and weak signals detection be implemented. The telescope is an off-axis parabolic mirror and the spectrometer is a modified Czerny-Turner spectral imaging system. Modified Czerny-Turner spectrometer contains a spherical mirror
a fixed plane grating and a toroidal mirror. By adjusting the incident angle to the collimating mirror and using toroidal mirror
coma and astigmatism were corrected well. We also optimize distances between the grating to the focusing mirror and the focusing mirror to the image plane to improve disadvantages of traditional Czerny-Turner structure. Designed results demonstrate that aberrations are substantially corrected
and high image quality can be obtained in broad waveband. The photon counting Wedge-Strip-Anode detector with micro-channel planes as the receiving plane is accepted for the instrument prototype. The other photon counting 2-D detector responding well for weak light such as Cross-Delay line detector and MAMA detector can also be used for detection. The calibration and performances testing system is made of a vacuum system
a deuterium lamp
a monochrometer and the instrument prototype. Results obtained from the experiment show that the spectral resolution is 2.4 nm and the spatial resolution is 80 m. The other calibration experiments are running. The technology of the spectrometer prototype is important for the research and applications of ionosphere remote sensing. 2011 SPIE.
Measuring the system gain of the TDI CCD remote sensing camera (EI CONFERENCE)
会议论文
OAI收割
Advanced Materials and Devices for Sensing and Imaging II, November 8, 2004 - November 10, 2004, Beijing, China
Ya-xia L.
;
Hai-ming B.
;
Jie L.
;
Jin R.
;
Zhi-hang H.
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浏览/下载:62/0
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提交时间:2013/03/25
The gain of a TDI CCD camera is the conversion between the number of electrons recorded by the TDI CCD and the number of digital units (counts) contained in the CCD image"[1]. TDI CCD camera has been a main technical approach for meeting the requirements of high-resolution and lightweight of remote sensing equipment. It is useful to know this conversion for evaluating the performance of the TDI CCD camera. In general
a lower gain is better. However
the resulting slope is the gain of the TDI CCD. We did the experiments using the Integration Sphere in order to get a flat field effects. We calculated the gain of the four IT-EI-2048 TDI CCD. The results and figures of the four TDI CCD are given.
this is only true as long as the total well depth (number of electrons that a pixel can hold) of the pixels can be represented. High gains result in higher digitization noise. System gains are designed to be a compromise between the extremes of high digitization noise and loss of well depth. In this paper
the mathematical theory is given behind the gain calculation on a TDI CCD camera and shows how the mathematics suggests ways to measure the gain accurately according to the Axiom Tech. The gains were computed using the mean-variance method
also known as the method of photon transfer curves. This method uses the effect of quantization on the variance in the measured counts over a uniformly illuminated patch of the detector. This derivation uses the concepts of signal and noise. A linear fit is done of variance vs. mean
Statistical properties and algebraic characteristics of quantum superpositions of negative binomial states
期刊论文
OAI收割
COMMUNICATIONS IN THEORETICAL PHYSICS, 2001, 卷号: 35, 期号: 6, 页码: 729
Wang, XG
;
Fu, HC
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浏览/下载:21/0
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提交时间:2013/09/24
SCHRODINGER-CAT STATES
QUANTIZED RADIATION-FIELD
NONLINEAR COHERENT STATES
NONDEMOLITION MEASUREMENTS
PHOTON-NUMBER
REPRESENTATION
REVIVAL
EVEN