太空碎片和卫星激光测距结合使用兆赫兹系统
Michael A Steindorfer1, Peiyuan Wang2, Franz Koidl2
1Space Research Institute, Austrian Academy of Sciences, Graz, Austria. michael.steindorfer@oeaw.ac.at.
Nature communications
|January 10, 2025
概括
这项研究引入了一种使用兆赫兹激光的新系统,将卫星激光测距与太空碎片激光测距相结合. 这种综合方法实现了科学卫星和空间碎片跟踪的高精度测量.
科学领域:
- 地质测量和遥感技术
- 光学测量技术的使用
- 太空监视和跟踪 太空监视和跟踪
背景情况:
- 卫星激光测距 (SLR) 为使用反射器的科学卫星提供毫米级的精度.
- 太空碎片激光测距 (SDLR) 通过分析分散反射,为已故物体提供次米精度.
- 目前的方法需要对SLR和SDLR进行单独的设置,从而限制了效率.
研究的目的:
- 开发和演示一个统一的激光测距系统,结合SLR和SDLR功能.
- 利用兆赫兹激光来提高测量精度和跟踪活跃卫星和空间碎片的效率.
- 为了使科学目标和空间碎片的同时跟踪,而无需系统重新配置.
主要方法:
- 在一个单一的集成激光距离设置中实现兆赫兹激光器.
- 使用该系统对科学卫星进行常规的单反相机测量.
- 在特定的空间碎片物体上应用同样的系统进行SDLR测量.
主要成果:
- 对于单反镜到反射镜 (例如,在Jason-2卫星上) 实现了低至几微米的测量精度.
- 获得了详细的SDLR数据,揭示了空间碎片单个表面的反射.
- 证明了在没有系统调整的情况下,在定期时间表内追踪两种类型的卫星的能力.
结论:
- 集成的兆赫激光测距系统有效地结合了SLR和SDLR的优势.
- 这种统一的方法提高了空间物体跟踪和表征的效率和精度.
- 该系统为了解卫星轨道和空间碎片旋转动态提供了宝贵的数据.
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