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WAVELET ANALYSIS FOR THE MICROSCOPE MISSION

机译：微观任务的小波分析

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Wavelet analysis is a powerful tool for identifying and analysing non-stationary signal components. This tool will now be used as an additional technique for the analysis of the science data of the MICROSCOPE mission. This French space mission aims at a high precision test of the Equivalence Principle (EP) with a new level of accuracy. The satellite (launched on April 25th 2016) carries the T-SAGE (Twin Space Accelerometer for Gravitation Experiments) developed by ONERA to measure the differential acceleration of two test masses made of different materials (Platinum and Titanium). A violation of the EP would induce a differential acceleration signal. The achievable accuracy of the EP test depends on the resolution of the accelerometers and on the rejection of disturbing effects caused by internal and external influences like thermal radiation effects, solar radiation pressure, atmospheric drag etc. Since several years the MICROSCOPE team at the Center of Applied Space Technology and Microgravity (ZARM) developes tools for mission modelling and simulation in close cooperation with the French partners ONERA, OCA and CNES. Before the launch the main goal was to perform pre-launch test runs of the data processing with consideration of the relevant influencing effects. Now we start to contribute to the data processing and data analysis. Especially the technique of wavelet analysis will be used to identify non-stationary disturbances. Disturbance signals with varying frequency can be identified with its specific fingerprints. Wavelet analysis tools allow corresponding filtering to improve the signal to noise ratio of the scientific results. The mentioned techniques and their applications to the MICROSCOPE mission are explained in this paper which is an updated version of the 2015 1AC manuscript.
机译：小波分析是用于识别和分析非平稳信号分量的强大工具。现在，该工具将用作分析MICROSCOPE任务的科学数据的附加技术。这项法国太空飞行任务旨在对等值原理（EP）进行高精度测试，并达到更高的精确度。该卫星（于2016年4月25日发射）搭载了ONERA开发的T-SAGE（重力实验用双空间加速度计），用于测量由不同材料（白金和钛）制成的两个测试质量的差分加速度。违反EP将会引起差分加速度信号。 EP测试可达到的精度取决于加速度计的分辨率以及对内部和外部影响（如热辐射效应，太阳辐射压力，大气阻力等）引起的干扰效应的抑制作用。应用空间技术和微重力（ZARM）与法国合作伙伴ONERA，OCA和CNES密切合作，开发了用于任务建模和仿真的工具。在发布之前，主要目标是在考虑相关影响因素的情况下对数据处理进行发布前测试。现在我们开始为数据处理和数据分析做出贡献。尤其是小波分析技术将用于识别非平稳干扰。频率变化的干扰信号可以通过其特定的指纹来识别。小波分析工具允许进行相应的滤波，以提高科学结果的信噪比。本文介绍了提到的技术及其在MICROSCOPE任务中的应用，该技术是2015 1AC手稿的更新版本。

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