Comprehensive analysis of noise in Macao Science Satellite-1 vector magnetometer data  

作　　者：SiShan Song Fan Yin Qin Yan Hermann Lühr Chao Xiong Yi Jiang PengFei Liu 

机构地区：[1]Department of Space Physics,School of Earth and Space Science and Technology,Hubei Luojia Laboratory,Wuhan University,Wuhan 430072,China [2]State Key Laboratory of Lunar and Planetary Sciences,Macao University of Science and Technology,Macao 999078,China [3]Macao Institute of Space Technology and Application,Macao University of Science and Technology,Macao 999078,China [4]GFZ Helmholtz Centre for Geosciences,Section 2.3 Geomagnetism,Potsdam,Germany

出　　处：《Earth and Planetary Physics》2025年第3期532-540,共9页地球与行星物理(英文版)

基　　金：supported by the National Key R&D Program of China(Grant2022YFF0503700);the National Natural Science Foundation of China(42474200 and 42174186)。

摘　　要：The Macao Science Satellite-1(known as MSS-1)is the first scientific exploration satellite that was designed to measure the Earth's low latitude magnetic field at high resolution and with high precision by collecting data in a near-equatorial orbit.Magnetic field data from MSS-1's onboard Vector Fluxgate Magnetometer(VFM),collected at a sample rate of 50 Hz,allows us to detect and investigate sources of magnetic data contamination,from DC to relevant Nyquist frequency.Here we report two types of artificial disturbances in the VFM data.One is V-shaped events concentrated at night,with frequencies sweeping from the Nyquist frequency down to zero and back up.The other is 5-Hz events(ones that exhibit a distinct 5 Hz spectrum peak);these events are always accompanied by intervals of spiky signals,and are clearly related to the attitude control of the satellite.Our analyses show that VFM noise levels in daytime are systematically lower than in nighttime.The daily average noise levels exhibit a period of about 52 days.The V-shaped events are strongly correlated with higher VFM noise levels.

关 键 词：Macao Science Satellite-1 Vector Fluxgate Magnetometer artificial disturbances noise features 

分 类 号：P353[天文地球—空间物理学]