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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Analysis of Space Debris Orbit Prediction Using Angle and Laser Ranging Data from Two Tracking Sites under Limited Observation Environment
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Analysis of Space Debris Orbit Prediction Using Angle and Laser Ranging Data from Two Tracking Sites under Limited Observation Environment

机译：有限观测环境下来自两个跟踪站点的角度和激光测距数据对空间碎片轨道预测的分析

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摘要

The global electro-optical (EO) and laser tracking sensor network was considered to investigate improvements to orbit prediction (OP) accuracy of space debris by combining angle and laser ranging data. However, it is worth noting that weather, schedule and visibility constraints can frequently limit the operations of such sensors, which may not result in sufficient tracking data for accurate OP. In this study, several 1-day OP results for low Earth orbit (LEO) space debris targets were demonstrated under a limited observation environment to verify the OP accuracy through the combination of angle and laser ranging data from two sites. For orbit determination (OD) processes, it was considered to analyze the OP accuracy by one site providing both 2–day arc angle data and 1-day arc laser ranging data, while the other was limited to 1-day arc angle data. In addition, the initial ballistic coefficient ( ) application method was proposed and implemented for the improvement of OD/OP accuracy, which introduces the modified correction factor depending on the drag coefficient. In the cases of combining the angle and laser ranging data, the OP results show the 3D position difference values are below 100 m root mean square (RMS) with small position uncertainty. This value satisfies the target OP accuracy for conjunction assessments and blind laser ranging (about 50–100 m at 1000 km altitude). The initial application method also shows better OP accuracy than the method without the correction factor.
机译：考虑使用全球电光（EO）和激光跟踪传感器网络，通过结合角度和激光测距数据来研究对空间碎片的轨道预测（OP）准确性的改进。但是，值得注意的是，天气，日程安排和能见度限制会经常限制此类传感器的运行，而这可能无法为准确的操作产生足够的跟踪数据。在这项研究中，在有限的观察环境下，对低地球轨道（LEO）空间碎片目标进行了为期1天的几次OP实验结果，以结合来自两个站点的角度和激光测距数据验证OP的准确性。对于轨道确定（OD）过程，可以考虑通过一个站点同时提供2天电弧角数据和1天电弧激光测距数据来分析OP精度，而另一个站点仅限于1天电弧角数据。此外，为提高OD / OP精度，提出并实施了初始弹道系数（）的应用方法，该方法引入了根据阻力系数修正的校正系数。在结合角度和激光测距数据的情况下，OP结果显示3D位置差值低于100 m均方根（RMS），且位置不确定性较小。该值满足联合评估和盲激光测距（在1000 km高度约50–100 m）的目标OP精度。与没有校正因子的方法相比，初始应用方法还显示出更好的OP精度。

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