【摘要】：危險空間碎片的探測與監(jiān)控一直是空間碎片探測的重點與難點,現(xiàn)有的技術(shù)還不能實現(xiàn)對危險空間碎片的有效監(jiān)測與定軌。針對危險空間碎片的探測,研究了一種主動式天基激光雷達探測方式。該方式采用了天基的單光子探測技術(shù),以期實現(xiàn)對幾百公里量級的危險空間碎片進行探測。首先簡要分析了點目標激光雷達方程,建立了空間環(huán)境的背景光噪聲模型,探討了單光子激光雷達的探測概率與虛警率,對激光的回波信號與探測精度進行了理論分析與仿真,最后分析了不同目標的探測能量需求。由理論分析與仿真結(jié)果來看,對500 km處的尺寸為10 cm的目標可以實現(xiàn)精度為0.2 m的有效探測。
[Abstract]:The detection and monitoring of dangerous space debris has always been the focus and difficulty of space debris detection. The existing technology can not realize the effective monitoring and orbit determination of dangerous space debris. An active space-based lidar is studied for the detection of dangerous space debris. This method uses space-based single photon detection technology to detect dangerous space debris in the order of several hundred kilometers. Firstly, the point target laser radar equation is briefly analyzed, the background light noise model in space environment is established, the detection probability and false alarm rate of single photon laser radar are discussed, and the theoretical analysis and simulation of the laser echo signal and detection accuracy are carried out. Finally, the detection energy requirements of different targets are analyzed. From the theoretical analysis and simulation results, it can be seen that the target with a size of 10 cm at 500 km can be detected with an effective precision of 0.2 m.
【作者單位】： 武漢大學(xué)電子信息學(xué)院;地球空間信息技術(shù)協(xié)同創(chuàng)新中心;
【分類號】：TN958.98

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