光学学报, 2018, 38 (12): 1228001, 网络出版: 2019-05-10
基于微通道板的单光子激光测高技术研究 下载: 1047次封面文章
Photon-Counting Laser Altimetry Based on Microchannel Plate
摘要
与传统的激光测高技术相比,单光子激光测高技术具有数据量大、质量轻、测距精度高等优势,是激光测高技术的发展趋势。建立数学模型对单光子激光测高特性进行研究,用数值计算估计了单光子激光测高的性能,并建立了地物模型,用蒙特卡罗方法进行了仿真,提出了测高数据的滤波方法和一种利用遥感图像优化高程信息的算法。结果表明:在正午阳光背景最强烈的条件下,典型地物模型单光子激光测高的均方根误差为6.1 cm,用算法优化后的误差为2.6 cm。
Abstract
Compared with the traditional laser altimetry technology, the photon-counting laser altimetry technology has the advantages of large data, light weight, and high ranging precision, which is the development trend of laser altimeter technolgoy. In this paper, we establish a mathematical model to study the characteristics of the photon-counting laser altimetry. The performance of the photon-counting laser altimeter is estimated by numerical calculation. The ground object model is established, and the simulation is carried out with Monte Carlo method. A filtering method for the altimetry data and an algorithm for optimizing the elevation information using the remote sensing images are proposed. The results show that the root-mean-square error of the photon-counting laser altimeter is 6.1 cm under the condition of the noonday background with the most intense sun for the typical ground model, and the error after optimization by the algorithm is 2.6 cm.
米小什, 赵惠, 樊学武, 盛立志. 基于微通道板的单光子激光测高技术研究[J]. 光学学报, 2018, 38(12): 1228001. Xiaoshi Mi, Hui Zhao, Xuewu Fan, Lizhi Sheng. Photon-Counting Laser Altimetry Based on Microchannel Plate[J]. Acta Optica Sinica, 2018, 38(12): 1228001.