Spacecraft-environment interaction modelling.

过去几十年来，世界上监测和科学卫星的部署急剧增加。我们各国社会的福祉和安全越来越依赖于空间科学和技术。加拿大是世界上第三个进行太空探索的国家，在许多太空探索领域仍然处于领先地位。然而，空间环境是不适宜居住的，空间天气会对卫星及其部件造成严重后果。正在发挥作用的一些影响包括：1)由热或高能粒子通量和太阳辐射引起的充电；2)与大表面或内部电场有关的电弧和内部放电；3)关键部件的热负荷；4)辐射和粒子轰击引起的材料性能老化和改变。即使在正常情况下，卫星的存在也会引起空间环境的扰动，从而导致某些测量的畸变。因此，很明显，空间任务规划和对空间仪器的最佳解释必须依赖于对卫星与空间环境之间相互作用的充分了解。在这一建议中，我描述了进一步发展和使用先进的计算机模型来研究人造卫星与空间环境之间相互作用的计划。这项工作建立在等离子体物理、计算方法和空间物理领域多年的经验基础上。这项研究将应用于诸如Swarm和e-POP等任务，加拿大在这些任务中作出了重大贡献。它还将与其他小组合作，用于研究国际任务。这将确定我们小组的专门知识和专门知识，并加强加拿大在空间科学和技术方面的领导地位。

The last several decades have seen a dramatic increase in the deployment of monitoring and science satellites in the world. Our societies depend increasingly on space science and technology for their well being and security. Canada was the third space faring nation in the world, and it remains a leader in many areas of space exploration. Space environment, however, is inhospitable and space weather can have severe consequences on satellites and their components. Some of the effects at play include:i) charging caused by thermal or energetic particle fluxes, and solar radiation, ii) arcing and internal discharges associated with large surface or internal electric fields, iii) heat loads on critical components and iv) aging and modification of material properties, caused by radiation and particle bombardment.Even under normal conditions, the presence of a satellite causes perturbations in the space environment which in turn can lead to aberrations in certain measurements. It is clear, therefore, that space mission planning and optimal interpretation of space borne instruments must rely on a solid understanding of the interaction between satellites and space environment.In this proposal I describe plans to further develop and a use advanced computer models to study the interaction between artificial satellites and space environment. This work builds on many years of experience in the fields of plasma physics, computational methods and space physics. The research will be applied to missions such as Swarm and e-POP in which Canada has a significant contribution. It will also be used, in collaboration with other teams to study international missions. This will ascertain our group's expertise and know-how, and strengthen Canada's position as a leader in space science and technology.