摘要
以未来天基态势感知对远距离空间目标高灵敏度探测与精细三维成像的潜在需求为出发点,开展以光子灵敏探测器为核心的光子计数激光三维成像系统及关键技术研究。提出了一种基于自主研制的交叉延迟线位敏阳极微通道板探测器的光子计数激光三维成像技术。首先介绍了该技术的基本原理,并从全链路建模与成像仿真特性分析的角度对其空间应用的潜力进行了研究;之后探讨了多域联合三维超分辨重建提升系统时空分辨能力的可行性;最后研制了基于交叉延迟线位敏阳极微通道板探测器的光子计数激光三维成像原理样机,在6.8 m距离处实现了距离分辨率优于5 mm的三维成像效果,证明了该技术方法的有效性。
Laser-based active detection and imaging is where the space situational awareness heading in the future. The photon-sensitive detector is the core of the photon-counting-based three-dimensional laser imaging system whose working range is much longer and which is capable of realizing both high-precision distance measurement and three-dimensional surface reconstruction at the same time. Therefore,the photon-counting-based three-dimensional laser imaging is especially suitable for realizing ranging and three-dimensional imaging of distant space targets in a deep space background. In this manuscript,the position-sensitive Micro-channel-plate with Cross-delay-line(MCP/CDL) detector-based photoncounting three-dimensional imaging technique is proposed. First of all,the research background of this manuscript is systematically introduced and the contribution of the work reported to the field of photoncounting-based three-dimensional laser imaging is summarized. After that,starting from the characteristics of the MCP/CDL detector itself,the photon-counting three-dimensional laser imaging system by using the position-sensitive MCP/CDL detector is designed and the corresponding operating mode is discussed simply,which gives a reference for real application in future. After that,the principle of the proposed position-sensitive MCP/CDL detector-based photon-counting three-dimensional laser imaging technique is introduced from two aspects. In the one hand,how to use MCP/CDL detector to realize the synchronous timing and positioning of arriving photon is qualitatively explained. On the other hand,with the help of the classical LIDAR equation,the echo power model and the echo photon model generated from the echo power model are given respectively. Based on the two basic models,three important models including the signal to noise ratio model,detection probability model,and ranging accuracy model are derived one by one, based on which the performance of the proposed technique is investigated numerically. After establishing the all-
作者
赵惠
殷浩蒙
刘永安
盛立志
杨向辉
邹刚毅
夏思宇
杨明洋
樊学武
ZHAO Hui;YIN Haomeng;LIU Yongan;SHEN Lizhi;YANG Xianghui;ZOU Gangyi;XIA Siyu;YANG Mingyang;FAN Xuewu(Xian Institute of Optics and Precision Mechanics of CAS,Xi′an 710119,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《光子学报》
EI
CAS
CSCD
北大核心
2022年第7期175-190,共16页
Acta Photonica Sinica
基金
GFCXTQ项目。
关键词
天基态势感知
主动探测
激光三维成像
光子计数探测器
超分辨重建
Space situational awareness
Active detection
Three-dimensional laser imaging
Photoncounting detector
Super-resolution reconstruction
