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1.国防科学技术大学, 湖南 长沙 410073
2.空间物理重点试验室, 北京 100076
3.北京八中高二(4)班, 北京 100033
4.中国科学院 西安光学精密机械研究所, 陕西 西安 710119
5.中国科学院 合肥物质科学研究院, 安徽 合肥 230031
[ "王超杰(1972-),男,山东曹县人,博士研究生,高级工程师,2004于西安电子科技大学获得硕士学位,主要从事航天测量系统工作,对于航天测量设备、测量系统与各种传感器有深入的研究。E-mail:daocaoren110@126.com" ]
秦来安(1983-),男,河南南阳人,博士,副研究员,2006年于郑州大学获得学士学位,2011年于中国科学院合肥物质科学研究院获得博士学位,主要从事激光大气传输及激光大气参数测量等方面的研究。E-mail:qinlaian@163.com E-mail:qinlaian@163.com
收稿日期:2016-09-06,
录用日期:2016-10-12,
纸质出版日期:2017-01-25
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王超杰, 王博, 郭惠楠, 等. 空间飞行器平台大气密度的在轨测量[J]. 光学精密工程, 2017,25(1):15-20.
Chao-jie WANG, Bo WANG, Hui-nan GUO, et al. Online measurement of atmospheric density based on space vehicle platform[J]. Editorial office of optics and precision engineeri, 2017, 25(1): 15-20.
王超杰, 王博, 郭惠楠, 等. 空间飞行器平台大气密度的在轨测量[J]. 光学精密工程, 2017,25(1):15-20. DOI: 10.3788/OPE.20172501.0015.
Chao-jie WANG, Bo WANG, Hui-nan GUO, et al. Online measurement of atmospheric density based on space vehicle platform[J]. Editorial office of optics and precision engineeri, 2017, 25(1): 15-20. DOI: 10.3788/OPE.20172501.0015.
针对飞行器在轨飞行时高空大气密度波动剧烈、气动特性辨识难度大等特点,提出了一种基于瑞利散射理论的成像激光雷达大气密度测量方法。利用气体分子的瑞利散射光强与分子密度成正比的特性,通过分析电子倍增成像探测器(EMCCD)拍摄的测量流场区域内激光后向瑞利散射光柱,得到了不同距离处高精度的在线大气密度数据。搭建了基于空间飞行器平台的大气密度在轨测量装置,并对该装置进行了标定。结果表明,所述方法对大气密度的测量精度不大于5%,且具有非接触、时间分辨率高等特点,因此在优化飞行器结构设计、提高气动辨识等方面具有良好的应用前景。
In view of the high-altitude atmospheric density fluctuation and the difficulty to identify aerodynamic characteristics of the aircraft in orbit
a technical solution for atmospheric density measurement by lidar based on Rayleigh scattering principle was proposed. The online data of atmospheric density at different distances was acquired through the analysis of the laser backscattering Rayleigh optical cylinder
which was captured by the Electron-Multiplying Charge Coupled Device (EMCCD) in the measuring flow field based on the principle that the density of gas molecules is in direct proportion to Rayleigh scattering intensity. Furthermore the atmospheric density online measuring instrument was developed and calibrated. Experimental and calibration results show that the online measurement precision of atmospheric density is controlled within 5%. The instrument has a promising application in optimization of spacecraft appearance and improvement of aerodynamic identification.
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