Cluster post launch extension from April 2010

集群启动后延期从 2010 年 4 月开始

• 批准号: ST/I000771/1
• 负责人: Michael Balikhin
• 金额: $ 7.5万
• 依托单位: University of Sheffield
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2010
• 资助国家: 英国
• 起止时间: 2010 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FI000771%2F1
• 关键词: Cluster; post; launch; extension; April

The Cluster mission is an ESA cornerstone mission with the objective to make major breakthroughs in our understanding of how the Earth's magnetosphere works, the Earth's response to changing solar-wind conditions, internal instabilities and the influence exerted by the ionosphere. Cluster was launched in 2000 and began operations in February 2001. ESA has extended the mission at least to the end of 2012. Cluster provides a unique capability to measure important characteristics of the plasma environment. Cluster is a core facility for the delivery of the Solar System strategy addressing the themes of energy flow in the Solar System and understanding fundamental plasma processes. The Digital Wave Processor, DWP, instrument is one of the three UK PI instruments to be flown on the four Cluster satellites. DWP is one of the five experiments (DWP, STAFF, EFW, WHISPER, and WBD) that together comprise the Wave Experiment Consortium (WEC). The WEC was formed to allow the sharing of resources and skills available within the community The WEC comprises a complicated set of instruments that share several of the resources available on the spacecraft such as electrical power, data rate and the use of booms and sensors. The WEC forms almost half of the scientific payload on each of the spacecraft. One of the WEC instruments (WBD) makes use of the NASA DSN (Deep Space Network) to collect much of its data. This is done to a schedule that overlaps with the schedule for data collection by the ESA ground stations. The resource sharing of the WEC, use of DSN and importance of WEC data, make both the instrument scheduling and data handling (including validation) complicated and of importance to the success of the mission. The DWP PI and team have been active in project-wide activities to co-ordinate operations, data handling and science planning. Operations of the WEC are co-ordinated by the WEC Operation Group which is chaired by the DWP PI. The UK is the lead contributor to the scientific exploitation and data handling on this mission. PI institutes are responsible for the instrument operation and provision to the Cluster Active Archive (CAA) of the highest resolution data, with supporting metadata and documentation. The DWP provides integrated commanding, synchronisation and on-board data processing for the WEC. Without this instrument 20 of the 41 Cluster instruments would not operate, including the only NASA led instrument on the mission, WBD. The UK through the DWP gains access to data from all 5 wave experiments in the WEC. Waves and electromagnetic field structures are fundamental in controlling all processes of physical change in the magnetospheric and solar wind plasma. The DWP also contains the UK particle correlator experiment which directly measures particle wave interactions and kinetic turbulence.

星团任务是欧空局的一项基石任务，其目标是在我们对地球磁层如何工作、地球对不断变化的太阳风条件的响应、内部不稳定性以及电离层所施加的影响的理解方面取得重大突破。 Cluster于2000年发射，并于2001年2月开始运行。ESA已将任务至少延长到2012年底。Cluster提供了测量等离子体环境重要特征的独特能力。 Cluster 是交付太阳系战略的核心设施，旨在解决太阳系中能量流的主题并了解基本的等离子体过程。数字波处理器 (DWP) 仪器是四颗集群卫星上搭载的三台英国 PI 仪器之一。 DWP 是共同组成波浪实验联盟 (WEC) 的五个实验（DWP、STAFF、EFW、WHISPER 和 WBD）之一。 WEC 的成立是为了共享社区内可用的资源和技能 WEC 由一组复杂的仪器组成，这些仪器共享航天器上可用的多种资源，例如电力、数据速率以及吊杆和传感器的使用。 WEC 几乎占每艘航天器上科学有效载荷的一半。 WEC 仪器 (WBD) 之一利用 NASA DSN（深空网络）来收集大量数据。这样做的时间表与欧空局地面站数据收集的时间表重叠。 WEC 的资源共享、DSN 的使用以及 WEC 数据的重要性，使得仪器调度和数据处理（包括验证）变得复杂，并且对于任务的成功至关重要。 DWP PI 和团队一直积极参与整个项目范围的活动，以协调运营、数据处理和科学规划。 WEC 的运营由 WEC 运营小组协调，该小组由 DWP PI 担任主席。英国是该任务科学开发和数据处理的主要贡献者。 PI 机构负责仪器操作并向 Cluster Active Archive (CAA) 提供最高分辨率数据以及支持元数据和文档。 DWP 为 WEC 提供集成命令、同步和机载数据处理。如果没有该仪器，41 个 Cluster 仪器中的 20 个将无法运行，其中包括 NASA 领导的任务中唯一的仪器 WBD。英国通过 DWP 获得了 WEC 中所有 5 波实验的数据。波和电磁场结构对于控制磁层和太阳风等离子体的所有物理变化过程至关重要。 DWP 还包含英国粒子相关器实验，可直接测量粒子波相互作用和动力湍流。

项目成果

Comparison of three methods for the estimation of cross-shock electric potential using Cluster data

使用聚类数据估计交叉冲击电势的三种方法的比较

• DOI: 10.5194/angeo-29-815-2011
• 发表时间: 2011
• 期刊: Annales Geophysicae
• 影响因子: 1.9
• 作者: Dimmock A

Ducted propagation of chorus waves: Cluster observations

合唱波的管道传播：集群观测

• DOI: 10.5194/angeo-29-1629-2011
• 发表时间: 2011
• 期刊: Annales Geophysicae
• 影响因子: 1.9
• 作者: Yearby K