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Resolution limit of anisotropic magnetoresistance(AMR) based vector magnetometer
文献类型：期刊论文
| 作者 | Qiu, Fuwei1,2; Wang, Jindong1; Zhang, Yiteng1; Yang, Gen3; Weng, Chenghan1 |
| 刊名 | SENSORS AND ACTUATORS A-PHYSICAL
 |
| 出版日期 | 2018 |
| 卷号 | 280页码:61-67 |
| 关键词 | AMR Resolution Noise Magnetoresistive magnetometer |
| ISSN号 | 0924-4247 |
| DOI | 10.1016/j.sna.2018.07.031 |
| 英文摘要 | An AMR based vector magnetometer was developed for the Separated Payload program to explore the field-aligned currents in Earth polar region. It has the advantages of low volume and CubeSat platform compatible mass while still maintains adequate resolution. In order to determine the resolution limit of AMR based magnetometer, we measured the sensor's intrinsic noise. This characteristic was in conflict with our prototype magnetoresistive magnetometer since phase sensitive detection(PSD) could only reject noise from interfacing circuit without affecting the signal to be measured. We believe that besides flipping the magnetization direction periodically, the set/reset technique also functions as a modulation to the magnetic field. The sensor operates at the modulation frequency and its noise level is much lower than that at low frequency. This technique is analyzed theoretically and a description from frequency perspective is given. By modulating the signal beyond corner frequency of the sensor and amplifier, both the sensor and interfacing circuit work in white noise region. Then we calculate the theoretical resolution limit of HMC1001 based magnetometer and the result shows that the noise floor is 24.9 pT/Hz(0.5)@1 Hz under 5 V bias with proper -matched amplifier. (C) 2018 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/6548]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 作者单位 | 1.State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, China; 2.University of Chinese Academy of Sciences, Beijing, China; 3.Key laboratory of electronics and information technology for space systems, National Space Science Center, Chinese Academy of Sciences, Beijing, China |
| 推荐引用方式 GB/T 7714 | Qiu, Fuwei,Wang, Jindong,Zhang, Yiteng,et al. Resolution limit of anisotropic magnetoresistance(AMR) based vector magnetometer[J]. SENSORS AND ACTUATORS A-PHYSICAL,2018,280:61-67. |
| APA | Qiu, Fuwei,Wang, Jindong,Zhang, Yiteng,Yang, Gen,&Weng, Chenghan.(2018).Resolution limit of anisotropic magnetoresistance(AMR) based vector magnetometer.SENSORS AND ACTUATORS A-PHYSICAL,280,61-67. |
| MLA | Qiu, Fuwei,et al."Resolution limit of anisotropic magnetoresistance(AMR) based vector magnetometer".SENSORS AND ACTUATORS A-PHYSICAL 280(2018):61-67. |
入库方式： OAI收割
来源：国家空间科学中心
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