| 多通道高计数率单光子计数系统的设计与实现 |
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| 作者姓名： | 潘 超 李凉海 赵一鸣 王丽东 时志云 胡涛涛 |
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| 作者单位： | 北京遥测技术研究所,中国航天电子技术研究院,北京遥测技术研究所,北京遥测技术研究所,北京遥测技术研究所,北京遥测技术研究所 |
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| 基金项目： | 中国航天科技集团自主研发项目“宽幅激光三维测量与复合成像技术” |
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| 摘 要： | 光子计数探测具有极高的探测灵敏度，已成为大气探测激光雷达的主流探测手段。设计了一种基于FPGA的8通道高计数率单光子计数系统，提出了一种基于多相时钟过采样的光子脉冲检测方法，实现了2 ns的光子脉宽分辨率、200 MCPS的光子计数率、无死时间的连续多通道同步计数，具有高计数率、高实时性、高集成度的特点。系统已装备于北京遥测技术研究所研制的多波长拉曼偏振大气探测激光雷达中，在激光雷达大气遥感中发挥了重要作用。
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| 关 键 词： | 光子计数 大气探测激光雷达 微弱信号探测 FPGA |
| 收稿时间： | 2021/12/31 0:00:00 |
| 修稿时间： | 2022/9/19 0:00:00 |
Design and realization of multi-channel high count rate photon counting system |
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| Authors: | PAN Chao LI Lianghai ZHAO Yiming WANG Lidong SHI Zhiyun and HU Taotao |
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| Institution: | Beijing Research Institute of Telemetry,China Academy of Aerospace Electronics Technology,Beijing Research Institute of Telemetry,Beijing Research Institute of Telemetry,Beijing Research Institute of Telemetry,Beijing Research Institute of Telemetry |
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| Abstract: | Photon counting detection has extremely high detection sensitivity and has become the mainstream detection method of atmospheric detection Lidar. This paper designs an 8-channel high-count rate photon counting system based on FPGA. It is proposed a pulse detection method based on multi-phase clock over-sampling. The system can achieve the photon pulse width resolution of 2 ns, photon counting rate of 200 MCPS, and continuous multi-channel synchronous counting without dead time. It has the advantages of high counting rate, high real-time performance and high integration. The system is now equipped in the atmospheric multi-wavelength Raman polarization Lidar (AMPLE) developed by Beijing Research Institute for Telemetry(BRIT), which plays an important role in Lidar atmospheric remote sensing. |
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| Keywords: | Photon counting Lidar Weak signal detection FPGA |
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