物理学报2013，Vol.62Issue(1)：180-187,8.DOI:10.7498/aps.62.014203
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
Influence of digital averaging on the signal-to-noise improvement ratio of temperature control system used in single-photon detector at infrared wavelength
摘要
Abstract
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.关键词
单光子探测器/数字平均/限带白噪声/信噪改善比Key words
single-photon detector/ digital averaging/ band limited white noise/ signal-to-noise improvement ratio引用本文复制引用
王进,魏正军,王赓,郭莉,王金东,张智明,郭健平,郭邦红,刘颂豪..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[J].物理学报,2013,62(1):180-187,8.基金项目
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. （批准号:61108039,60978009,61072028）
