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Earth and Planetary Physics 2022年第1期6卷 52-60页

作者： XiaoWen Hu GuoQiang Wang zonghao pan Chinese Academy of Sciences Key Laboratory of Geospace Environment School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Institute of Space Science and Applied Technology Harbin Institute of TechnologyShenzhen 518055China

The space-borne fluxgate magnetometer(FGM)requires regular in-flight calibration to obtain its zero ***,Wang GQ and pan ZH(2021a)developed a new method for the zero offset calibration based on the properties of Alfvén *** found that an optimal offset line(OOL)exists in the offset cube for a pure Alfvén wave and that the zero offset can be determined by the intersection of at least two nonparallel *** no pure Alfvén waves exist in the interplanetary magnetic field,calculation of the zero offset relies on the selection of highly Alfvénic fluctuation ***,we propose an automatic procedure to find highly Alfvénic fluctuations in the solar wind and calculate the zero *** procedure includes three parts:(1)selecting potential Alfvénic fluctuation events,(2)obtaining the OOL,and(3)determining the zero *** tested our automatic procedure by applying it to the magnetic field data measured by the FGM onboard the Venus *** tests revealed that our automatic procedure was able to achieve results as good as those determined by the Davis-Smith *** advantage of our procedure is that the selection criteria and the process for selecting the highly Alfvénic fluctuation events are *** automatic procedure could also be applied to find fluctuation events for the Davis-Smith method.

关键词： fluxgate magnetometer in-flight calibration zero offset highly Alfvénic fluctuations automatic procedure

Ground calibration of the Mars orbiter magnetometer onboard Tianwen-1

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Earth and Planetary Physics 2023年第3期7卷 371-377页

作者： ManMing Chen Kai Liu XiaoWen Hu YiRen Li XinJun Hao zonghao pan School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China Chinese Academy of Sciences Center for Excellence in Comparative Planetology University of Science and Technology of ChinaHefei 230026China

Ground calibration experiments of the Mars orbiter magnetometer(MOMAG)onboard the orbiter of Tianwen-1 were performed to determine the sensitivity,misalignment angle,and offset of the *** linearity of the applied calibrated magnetic fields and the output from the sensors were confirmed to be better than 10^(-4),and the sensor axes were orthogonal to each other within 0.5 *** temperature dependencies of the sensitivity and misalignment angle were examined,but no clear signatures of temperature dependencies could be *** offset and the stability of sensor offset drift with a temperature change were also determined by the rotation *** stability of the sensor offset drift was less than 0.01 nT/℃.The ground calibration of MOMAG determines all the calibration parameters of the sensors for accurate magnetic field measurements in orbit with the appropriate corrections.

关键词： Mars orbiter magnetometer Tianwen-1 ground calibration

Mars Orbiter magnetometer of China’s First Mars Mission Tianwen-1

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Earth and Planetary Physics 2020年第4期4卷 384-389页

作者： Kai Liu XinJun Hao YiRen Li TieLong Zhang zonghao pan ManMing Chen XiaoWen Hu Xin Li ChengLong Shen YuMing Wang Chinese Academy of Sciences Key Laboratory of Geospace Environment School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Chinese Academy of Sciences Center for Excellence in Comparative Planetology University of Science and Technology of ChinaHefei 230026China Space Research Institute Austrian Academy of SciencesGrazAustria

As one of the seven scientific payloads on board the Tianwen-1 orbiter,the Mars Orbiter Magnetometer(MOMAG)will measure the magnetic fields of and surrounding Mars to study its space environment and the interaction with the solar *** instrument consists of two identical triaxial fluxgate magnetometer sensors,mounted on a 3.19 meter-long boom with a seperation of about 90 *** dual-magnetometers configuration will help eliminate the magnetic field interference generated by the spacecraft platform and *** sensors are controlled by an electric box mounted inside the *** magnetometer measures the ambient vector magnetic field over a wide dynamic range(to 10,000 nT per axis)with a resolution of 1.19 *** magnetometers sample the ambient magnetic field at an intrinsic frequency of 128 Hz,but will operate in a model with alternating frequency between 1 and 32 Hz to meet telemetry allocations.

关键词： Mars magnetic field magnetometer Tianwen-1 spaceflight instrumentation

First results of the low energy ion spectrometer onboard a Chinese geosynchronous satellite

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Science China(Technological Sciences) 2023年第5期66卷 1378-1384页

作者： SHAN Xu MIAO Bin CAO Zhe SUN ZhenYu LI YiRen LIU Kai GUO XingYu QU SanBiao SU ZhenPeng SHEN ChengLong pan zonghao LI Xin HAO XinJun YANG XiaoPing TIAN Chao JIANG Yu LIU ShuBin AN Qi CHEN XiangJun WANG YuMing Hefei National Research Center for Physical Sciences at the Microscale Department of Modern PhysicsUniversity of Science and Technology of ChinaHefei230026China CAS Key Laboratory of Geospace Environment School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei230026China State Key Laboratory of Particle Detection and Electronics(IHEP-USTC) Department of Modern PhysicsUniversity of Science and Technology of ChinaHefei230026China Shandong Institute of Space Electronic Technology Yantai264003China State Key Laboratory of Astronautic Dynamics Xi’an Satellite Control CenterXi’an710043China CAS Center for Excellence in Comparative Planetology University of Science and Technology of ChinaHefei230026China

A Chinese geosynchronous satellite was launched on June 23,*** carried a plasma detection package to monitor the space environment around the *** we report the inflight performance of a low energy ion spectrometer(LEIS),one of the primary instruments in the plasma detection package,and its initial observations in *** from the state-of-the-art design of a top-hat electrostatic analyzer cooperated with angular scanning deflectors,three-dimensional measurement of ions in space with a large field of view of 360°×90°and a wide energy range from 50 eV to 25 keV per charge has been *** differential energy flux spectra of ions around the orbit have shown clear signatures of surface charging and storm/substorm ion *** occurrence of surface charging could be caused by the lack of photoemission at the Earth's eclipse(near the midnight)or the storm energetic electron injection at the dawn *** present results demonstrated a good performance of the LEIS payload in flight for monitoring the space ion environment around the *** situ measurements of the LEIS payload provide us an opportunity to understand the magnetospheric ion dynamics and forecast the associate space weather impacts.

关键词： low energy ion spectrometer geosynchronous orbit inflight measurement differential energy flux surface charging storm/substorm

In-flight calibration of the magnetometer on the Mars orbiter of Tianwen-1

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Science China(Technological Sciences) 2023年第8期66卷 2396-2405页

作者： ZOU ZhuXuan WANG YuMing ZHANG TieLong WANG GuoQiang XIAO SuDong pan zonghao ZHANG ZhouBin YAN Wei DU Yang CHI YuTian CHENG Long WU ZhiYong HAO XinJun LI YiRen LIU Kai CHEN ManMing SU ZhenPeng SHEN ChengLong XU MengJiao GUO JingNan School of Earth and Space Sciences/Deep Space Exploration Laboratory University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Comparative Planetology/CAS Key Laboratory of Geospace Environment/Mengcheng National Geophysical Observatory University of Science and Technology of ChinaHefei 230026China Space Research Institute Austrian Academy of SciencesGraz 8010Austria Institute of Space Science and Applied Technology Harbin Institute of TechnologyShenzhen 518055China National Astronomical Observatories Chinese Academy of SciencesBeijing 100080China Shanghai Institute of Satellite Engineering Shanghai 200240China Institute of Deep Space Sciences Deep Space Exploration LaboratoryHefei 230026China

Mars orbiter magnetometer(MOMAG)is one of seven science payloads onboard Tianwen-1’s *** most of the satellites,Tianwen-1’s orbiter is not magnetically cleaned,and the boom where placed the magnetometer’s sensors is not long *** pose many challenges to the magnetic field data *** this study,we introduce the in-flight calibration process of the Tianwen-1/*** magnetic interference including spacecraft generated dynamic field and the slowlychanging zero offsets are cleaned in *** the calibrated magnetic field data are compared with the data from the Mars atmosphere and volatile Evolutio N(MAVEN).We find that some physical structures in the solar wind are consistent between the two data sets,and the distributions of the magnetic field strength in the solar wind are very *** results suggest that the in-flight calibration of the MOMAG is successful and the MOMAG provides reliable data for scientific research.

关键词： magnetometer in-flight calibration Martian magnetic field Tianwen-1

The Mars orbiter magnetometer of Tianwen-1:in-flight performance and first science results

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Earth and Planetary Physics 2023年第2期7卷 216-228页

作者： YuMing Wang TieLong Zhang GuoQiang Wang SuDong Xiao ZhuXuan Zou Long Cheng zonghao pan Kai Liu XinJun Hao YiRen Li ManMing Chen ZhouBin Zhang Wei Yan ZhenPeng Su ZhiYong Wu ChengLong Shen YuTian Chi MengJiao Xu JingNan Guo Yang Du School of Earth and Space Sciences/Deep Space Exploration Laboratory University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Comparative Planetology/CAS Key Laboratory of Geospace Environment/Mengcheng National Geophysical Observatory University of Science and Technology of ChinaHefei 230026China Space Research Institute Austrian Academy of SciencesGrazAustria Institute of Space Science and Applied Technology Harbin Institute of TechnologyShenzhen 518055China National Astronomical Observatories Chinese Academy of SciencesBeijing 100012China Institute of Deep Space Sciences Deep Space Exploration LaboratoryHefei 230026China Shanghai Institute of Satellite Engineering Shanghai 201109China

The Mars Orbiter MAGnetometer(MOMAG)is a scientific instrument onboard the orbiter of China’s first mission for Mars—*** November 13,2021,it has been recording magnetic field data from the solar wind to the magnetic pile-up region surrounding *** we present its in-flight performance and first science results,based on its first one and one-half months’*** these early MOMAG observations to the magnetic field data in the solar wind from NASA’s Mars Atmosphere and Volatile EvolutioN(MAVEN)mission,we report that the MOMAG magnetic field data are at the same level in magnitude,and describe the same magnetic structures with similar variations in three *** recognize 158 clear bow shock(BS)crossings in these MOMAG data;their locations match well statistically with the modeled average *** also identify and compare five pairs of datasets collected when Tianwen-1’s orbiter and the MAVEN probe made simultaneous BS *** BS crossings confirm the global shape of modeled BS,as well as the south-north asymmetry of the Martian *** cases presented in this paper suggest that the BS is probably more dynamic at flank than near the *** far,MOMAG performs well,and provides accurate magnetic field *** is continuously scanning the magnetic field surrounding *** from MOMAG’s measurements complement data from MAVEN and will undoubt edly advance our understanding of the plasma environment of Mars.

关键词： Mars magnetic field Tianwen-1 magnetometer bow shock

基于磁镜结构的Wang-pan方法在磁强计在轨标定中的应用

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地球物理学报 2022年第6期65卷 1940-1950页

作者：胡小文王国强潘宗浩张铁龙中国科学技术大学地球和空间科学学院合肥230026 哈尔滨工业大学(深圳)空间科学与应用技术研究院广东深圳518055 奥地利科学院空间研究所格拉茨A-8042

磁通门磁强计(FGM)的磁补偿随时间会发生缓慢变化;因此,提高FGM磁补偿的标定精度对实现高精度磁场测量至关重要.最近,一种基于磁镜结构的标定方法被提出,本文将其称之为Wang-pan方法Ⅱ.本文分析了Wang-pan方法Ⅱ在太阳风、地球磁鞘和磁... 详细信息

磁通门磁强计(FGM)的磁补偿随时间会发生缓慢变化;因此,提高FGM磁补偿的标定精度对实现高精度磁场测量至关重要.最近,一种基于磁镜结构的标定方法被提出,本文将其称之为Wang-pan方法Ⅱ.本文分析了Wang-pan方法Ⅱ在太阳风、地球磁鞘和磁尾电流片区域的适用性.我们发现,磁镜结构或线性磁洞事件个数的增加有助于降低Wang-pan方法Ⅱ的计算误差;此外,事件的背景磁场强度和磁场耗散程度会显著影响Wang-pan方法Ⅱ的计算精度.Wang-pan方法Ⅱ在太阳风和磁尾电流片中的计算误差在±0.2 nT以内的概率高达70%,在磁鞘中计算误差比太阳风及磁尾电流片中的大了约1个数量级.为了提高利用磁镜结构标定磁补偿值的精度,我们研究了线性磁洞事件的多个参数特征对磁补偿计算误差的影响,该研究结果将为Wang-pan方法Ⅱ的应用提供磁镜结构或线性磁洞事件的筛选参考准则.

关键词：磁通门磁强计磁补偿在轨标定磁镜结构线性磁洞

A low-energy ion spectrometer with half-space entrance for three-axis stabilized spacecraft

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Science China(Technological Sciences) 2019年第6期62卷 1015-1027页

作者： HU RenXiang SHAN Xu YUAN GuangYuan WANG ShuWen ZHANG WeiHang QI Wei CAO Zhe LI YiRen CHEN ManMing YANG XiaoPing WANG Bo SHAO SiPei LI Feng ZHONG XiaoQing FAN Dan HAO XinJun FENG ChangQing SU ZhenPeng SHEN ChengLong LI Xin DAI GuYue QIU BingLin pan zonghao LIU Kai XU ChunKai LIU ShuBin AN Qi ZHANG TieLong WANG YuMing CHEN XiangJun Hefei National Laboratory for Physical Sciences at the Microscale Department of Modern Physics University of Science and Technology of China Hefei 230026 China State Key Laboratory of Particle Detection and Electronics (IHEP-USTC) Department of Modern Physics University of Science and Technology of China Hefei 230026 China CAS Key Laboratory of Geospace Environment School of Earth and Space Sciences University of Science and Technology of China Hefei 230026 China Shandong Institute of Space Electronic Technology Yantai 264003 China Institute of Telecommunication Satellite China Academy of Space Technology Beijing 100094 China

A low-energy ion spectrometer(LEIS) for use aboard three-axis stabilized spacecraft has been developed to measure ion energy per charge distribution in three-dimensional space with good energy-, angular-and temporal-resolutions. For the standard top-hat electrostatic analyzer used widely in space plasma detection, three-axis stabilized spacecraft makes it difficult to obtain complete coverage of all possible ion arrival directions. We have designed angular scanning deflectors supplementing to a cylindrically symmetric top-hat electrostatic analyzer to provide a half-space field of view as 360°×90°(–45°–+45°), and fabricated the LEIS flight model for detecting magnetospheric ions in geosynchronous orbit. The performance of this payload has been evaluated in detail by a series of simulation and environmental tests, and the payload has also been calibrated through laboratory experiments using a low-energy ion source. The results show that capabilities of the LEIS payload are in accordance with the requirements of a magnetospheric mission.

关键词： low-energy ion spectrometer three-dimensional measurement top-hat electrostatic analyzer angular scanning deflectors simulation ground calibration

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阿尔芬波动特征对卫星磁力仪零位标定的影响

地球物理学报 2019年第4期62卷 1193-1198页

作者：潘宗浩王国强孟立飞易忠张铁龙中国科学技术大学地球和空间科学学院合肥230026 中国科学院比较行星学卓越创新中心合肥230026 哈尔滨工业大学(深圳) 广东深圳518055 北京卫星环境工程研究所北京100029 奥地利科学院空间研究所

磁通门磁力仪的零位偏移量在卫星轨道上会因诸多因素而发生改变.为此,基于剪切阿尔芬波动不改变总磁场强度这一特征的Davis-Smith方法被提出用于计算磁力仪的零位补偿.实际上,行星际空间中没有纯粹的阿尔芬波动.本文采用数值模拟分析了... 详细信息

磁通门磁力仪的零位偏移量在卫星轨道上会因诸多因素而发生改变.为此,基于剪切阿尔芬波动不改变总磁场强度这一特征的Davis-Smith方法被提出用于计算磁力仪的零位补偿.实际上,行星际空间中没有纯粹的阿尔芬波动.本文采用数值模拟分析了存在小的压缩波动情况下,阿尔芬波动的幅度、周期和相位以及数据窗口时间长度等对Davis-Smith方法计算零位补偿的影响.我们发现,只有当阿尔芬波动的周期与压缩波动周期相同时,阿尔芬波动的性质会对零位补偿的计算产生不可忽视的误差.阿尔芬波动的幅度越大,零位补偿的误差越小.磁场各分量零位补偿的误差大小还会受到阿尔芬波动初始相位的影响.此外,数据窗口时间长度越长,则零位补偿误差趋于减小至真实值.

关键词：磁力仪校准 Davis-Smith方法阿尔芬波动补偿误差特征

基于Davis-Smith方法计算卫星磁强计零位补偿的误差特征研究

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地球物理学报 2018年第9期61卷 3545-3551页

作者：孟立飞潘宗浩易忠王国强张铁龙北京卫星环境工程研究所北京100029 中国科学技术大学地球和空间科学学院中国科学院近地空间环境重点实验室合肥230026 哈尔滨工业大学(深圳)空间科学与应用技术研究院深圳518055 奥地利科学院空间研究所

卫星所携带的磁通门磁强计会随时间发生零位漂移,因此需要对其进行补偿.基于行星际磁场的剪切阿尔芬波动特性,利用Davis-Smith方法可计算磁强计的零位磁场.本文利用数值模拟,分析了总磁场幅度BT及压缩波动对Davis-Smith方法所产生零位... 详细信息

卫星所携带的磁通门磁强计会随时间发生零位漂移,因此需要对其进行补偿.基于行星际磁场的剪切阿尔芬波动特性,利用Davis-Smith方法可计算磁强计的零位磁场.本文利用数值模拟,分析了总磁场幅度BT及压缩波动对Davis-Smith方法所产生零位补偿的误差特征.我们发现,BT越大,零位补偿误差越大;且当压缩波动频率和剪切波动频率不同时,磁场各分量的零位补偿之间的比值与对应背景磁场的比值近似相等;压缩波动的幅度越小,零位补偿的误差趋于更小;此外,压缩波动的频率和初始相位等也会影响零位补偿的误差.这些误差特征可为提高零位补偿的可靠性提供重要的理论依据.

关键词：磁强计校准 Davis-Smith方法补偿误差特征