距离千米级双望远镜的空间碎片激光测距
Laser Ranging for Space Debris Using Double Telescopes with Kilometer-Level Distance
查看参考文献17篇
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文摘
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以上海天文台收发分离的21cm/60cm口径卫星激光测距系统为例,利用高精度计时器、光电探测器等设备,对发射/接收系统的时延分别进行测量与标定,测量地面靶目标所得到的发射/接收系统的总时延与常规地面靶目标测量方法的测量均值相比,时延标定误差为400ps。在此基础上,利用高精度时钟系统,并在解决远距离望远镜回波信号探测距离门控制问题的条件下,实现了相距2.5km的双望远镜系统对距离大于1000km的空间碎片目标的测量,验证了远距离接收空间碎片目标激光回波信号的能力。 |
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其他语种文摘
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In this paper,using high-precision timers,photoelectric detectors,and other equipment,the laser transmitting and receiving system delays for a 60-cm receiving telescope aperture system at the Shanghai Observatory are measured and calibrated,with a transmitting telescope aperture of 21cm.By comparing the result of a target measurement by a space debris laser ranging(SDLR)system on the ground with the measured results of the conventional target measurement,we find that the calibration error of delay is approximately 400ps.On this basis,using a high-precision clock system in a laser ranging system,SDLR is achieved for the first time in China using a single telescope to send laser pulses and double telescopes with a distance of 2.5km to receive laser echoes, solving the problem of detection range gate control of echo signals from the remote telescope.This system realizes a range distance of over 1000km.The proposed method demonstrates the ability to receive laser echoes from space debris from a remote distance on the ground with multiple telescopes. |
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来源
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光学学报
,2020,40(2):0228002 【核心库】
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DOI
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10.3788/AOS202040.0228002
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关键词
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遥感
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卫星激光测距
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多台望远镜接收
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系统时延
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距离门控
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远距离探测
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地址
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1.
中国科学院上海天文台, 上海, 200030
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中国科学院空间目标与碎片观测重点实验室, 中国科学院空间目标与碎片观测重点实验室, 江苏, 南京, 210008
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中国科学院新疆天文台, 新疆, 乌鲁木齐, 830011
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0253-2239 |
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学科
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大气科学(气象学) |
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基金
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国家自然科学基金
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博士后创新人才计划
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博士后第62批面上基金
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文献收藏号
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CSCD:6682867
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