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数字平均对红外单光子探测器中温度控制系统信噪改善比的影响
  • ISSN号：1000-3290
  • 期刊名称：Acta Physica Sinica
  • 时间：0
  • 页码：-
  • 分类：TP273[自动化与计算机技术—控制科学与工程;自动化与计算机技术—检测技术与自动化装置]
  • 作者机构：[1]华南师范大学,广东省微纳光子功能材料与器件重点实验室,量子信息技术广东高校重点实验室,广州510006
  • 相关基金：国家自然科学基金（批准号：61108039,60978009,61072028）、国家自然科学基金重大研究计划（批准号：91121023）和国家重点基础研究发展计划（批准号：2011CBA00200）资助的课题.
  • 相关项目：高性能积分门控红外单光子探测器的研究
作者： 王进|魏正军|王赓|郭莉|王金东|张智明|郭健平|郭邦红|刘颂豪|
关键词： 单光子探测器, 数字平均, 限带白噪声, 信噪改善比, single-photon detector, digital averaging, band limited white noise, signal-to-noise improvement ratio
中文摘要：

针对用于量子保密通信中单光子探测器需要高精度温控系统的情况，分析了其温控系统中数字平均方案对系统信噪改善比的影响，给出了信噪改善比与平均次数、采样周期、总采样时间和白噪声带宽的函数关系．针对实际应用中总采样时间有限的情况，分别就平均次数、采样周期两个物理参量对系统信噪改善比的作用进行了计算，给出了总采样时间一定的情况下，信噪改善比的表达式，并定义了最佳的采样次数．

英文摘要：

According to performance requirement of high precision temperature control system used in single-photon detector, the signal- to-noise improvement ratio （SNIR） achieved by digital averaging used in it is analyzed, and the functional relation between SNIR and average times, sampling period, length of sampling time and bandwidth of band limited white noise is given. Aiming at practical application, on condition that the total sampling time is limited, the influences of average time and sampling period on the SNIR of the system are calculated respectively, the expression of SNIR is given and the optimal sampling time is defined.

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期刊信息
  • 《物理学报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国物理学会 中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京603信箱(中国科学院物理研究所)
  • 邮编：100190
  • 邮箱：apsoffice@iphy.ac.cn
  • 电话：010-82649026
  • 国际标准刊号：ISSN：1000-3290
  • 国内统一刊号：ISSN：11-1958/O4
  • 邮发代号:2-425
  • 获奖情况:
  • 1999年首届国家期刊奖,2000年中科院优秀期刊特等奖,2001年科技期刊最高方阵队双高期刊居中国期刊第12位
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  • 被引量:49876