Introduction to NASA Living With a Star Institute Special Section on Low Earth Orbit Satellite Drag: Science and Operational Impact
Introduction to NASA Living With a Star Institute Special Section on Low Earth Orbit Satellite Drag: Science and Operational Impact
复制标题
NASA 与恒星共存研究所介绍近地轨道卫星阻力特别章节：科学和运行影响
DOI：
10.1029/2018sw001983
复制
发表时间：
2018
期刊：
影响因子：
3.7
通讯作者：
James C. Jones
中科院分区：
文献类型：
--
作者：
Yongliang Zhang;L. Paxton;James C. Jones
本文简要介绍了美国宇航局与星星共存（LWS）研究所关于低地球轨道（LEO）卫星阻力的特别部分：科学和业务影响。LWS研究所的目标是：（a）审查大气阻力研究的现状和低地球轨道卫星的业务问题;（B）确定和了解大气阻力估算中的主要问题;（c）为今后改进我们提供卫星阻力即时预报的能力提出建议。这一特别部分介绍了来自四个国家的11个参与研究所的17名研究所成员所取得的进展，以及不属于最初美国航天局LWS低地轨道阻力小组的科学家所作的其他贡献。所提供的资料涉及太阳极端紫外线输入的测量和建模、热层中性密度分布、成分和总密度的变化以及卫星会合和轨道预测等专题。热层密度规格中的误差是LEO阻力估计和卫星会合不确定性的主要来源。一致的意见是，今后需要大量资助的工作，以解决和改进在不同的太阳和地磁条件下的热层中性密度和组成的测量和建模。
This paper provides a brief description of the NASA Living With a Star (LWS) Institute special section on low Earth orbit (LEO) satellite drag: Science and operational impact. The goals of the LWS institute are to (a) review the current status of atmospheric drag research and operational concerns for LEO satellites, (b) identify and understand the major issues in atmospheric drag estimation, and (c) provide recommendations for future improvement in our ability to provide nowcasts of satellite drag. This special section presents the progress made by the 17 institute members of the 11 participating institutes from four countries as well as additional contributions from scientists who were not part of the original NASA LWS LEO drag team. Contributions cover topics in measurement and modeling of solar extreme ultraviolet inputs, thermospheric neutral density profiles, changes in composition and total density, and satellite conjunction and orbit prediction. Errors in the thermosphere density specification are the dominant source in uncertainty of LEO drag estimation and satellite conjunction. The consensus opinion is that significant funded future effort needs to address and improve measurements and modeling of the thermospheric neutral density and composition under different solar and geomagnetic conditions.