权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Multi-spacecraft analysis toolkit for Swarm

Swarm 多航天器分析工具包

基本信息

批准号：
169802856
负责人：
Professor Dr. Joachim Vogt
金额：
--
依托单位：
Department of Physics and Earth Sciences
依托单位国家：
德国
项目类别：
Priority Programmes
财政年份：
2010
资助国家：
德国
起止时间：
2009-12-31 至 2014-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/169802856?language=en
关键词：
Multi spacecraft analysis toolkit Swarm

项目摘要

Recent space missions such as CHAMP and Ørsted have significantly advanced our understanding of planetary magnetism. Data interpretation and global field modelling based on single-spacecraft magnetic measurements, however, are generically limited by their spatiotemporal ambiguity. The forthcoming three-spacecraft ESA mission Swarm will be able to address this problem and thus provide a better separation of internal and external contributions to the Earth’s magnetic field. To tap the full potential of Swarm’s multi-point nature and also its combination of scientific instruments, we plan to tailor a data analysis toolkit to the specifics of the mission. The project described in this proposal will build on the efforts made in the context of ESA’s multi-spacecraft mission Cluster. We will focus on the identification of auroral processes and current systems by in-situ measurements of the pair of Swarm satellites on the lower orbit of the constellation. Of particular importance in this context are field-aligned currents at high latitudes. New techniques will be developed and combined with existing methods into a unified framework to identify spatially localized and possibly also time-varying contributions to magnetic field data. The analysis tools developed in the context of our project serve a dual purpose. First, they are expected to support other groups in the SPP 1488 in their efforts to model the planetary magnetic field of internal origin. Second, they will be the basis for a longer-term study of plasma processes at the ionospheric ends of auroral flux tubes, with details to be specified in the renewal proposals of this priority program.

最近的太空任务，如CHAMP和Ørsted，大大提高了我们对行星磁力的理解。然而，基于单航天器磁测量的数据解释和全球磁场建模通常受到其时空模糊性的限制。欧空局即将进行的由三艘航天器组成的Swarm任务将能够解决这个问题，从而更好地分离对地球磁场的内部和外部贡献。为了充分挖掘Swarm的多点特性及其科学仪器组合的潜力，我们计划根据任务的具体情况定制一个数据分析工具包。本提案中所述的项目将以欧空局多航天器任务集群所作的努力为基础。我们将着重于通过在星座较低轨道上对Swarm卫星进行现场测量来识别极光过程和当前系统。在这方面特别重要的是高纬度地区的场向流。将开发新技术并将其与现有方法结合成一个统一的框架，以确定对磁场数据的空间定位和可能的时变贡献。在我们的项目环境中开发的分析工具有双重目的。首先，他们有望支持spp1488的其他小组努力建立内部起源的行星磁场模型。其次，它们将成为对极光通量管电离层末端等离子体过程进行长期研究的基础，其细节将在该优先计划的更新建议中规定。