Calibration and Cleaning of Magnetic Satellite Data

地磁场是地球的一个基本和非常有用的属性，无论是在实用方面（导航，工业应用和资源勘探）还是在学术方面，它可以告诉我们地球的各个部分-特别是地球核心的演变，地壳的结构和全球构造的历史，以及海洋的运动。它也是我们保护免受有害空间辐射的一个主要组成部分。为了使用和理解磁场，第一步是建立磁场的数学模型，最好的模型是利用低地球轨道卫星的数据建立的;随着欧洲航天局使命Swarm的发射，一个特殊的新机会即将到来，这是一个专门的磁场测量使命，由三颗卫星组成，以一种特殊的配置飞行，以告诉我们磁场的情况。地磁场的大部分来自地球内部，但地球上方的源也有贡献-这是试图模拟地球主磁场时的“噪音”。在这个项目中，我们将开发更好地处理这种噪声的新方法，以便使用Swarm的数据来生成更准确和更高分辨率的地磁场模型。

The geomagnetic field is a fundamental and very useful property of the Earth, both in practical terms (for navigation, industrial applications and resource exploration) and in academic terms, for what it can tell us about various parts of the Earth - particularly the evolution of Earth's core, the structure of the Earth's crust and history of global tectonics, and also the motion of the oceans. It is also a major component in our protection from harmful space radiation. In order to use and understand the field, a first step is to produce mathematical models of it. The best models are made using data from low-Earth orbiting satellites; a particular new opportunity is about to become available with the launch of the European Space Agency mission Swarm, a dedicated magnetic measurement mission consisting of three satellites flying in a particular configuration optimised to tell us about the field. The majority of the geomagnetic field comes from within the Earth, but sources above the Earth also make a contribution - this is 'noise' when trying to model the main field of the Earth. In this project, we will develop new methodologies of better dealing with this noise, so as to use data from Swarm to produce more accurate and higher resolution models of the geomagnetic field.