NSSC OpenIR  > 空间环境部
Alternative TitleIon drift meter aboard China seismo-electromagnetic satellite
郑香脂; 张爱兵; 关燚炳; 刘超; 孙越强; 王文静; 田峥; 孔令高; 丁建京
Source Publication物理学报
Keyword等离子体分析仪 离子漂移计 电磁监测试验卫星 离子漂移速度
Other AbstractA lot of electromagnetic anomalies observed by satellites before earthquakes indicate that there is interrelation between earthquake and ionosphere. China seismo-electromagnetic satellite (CSES) is the first Chinese space-based platform of three-dimensional earthquake monitoring system. The scientific payload of plasma analyzing package (PAP) aboard CSES is designed to study the possible influence of the seismic activity on the ionospheric plasma and thereby to monitor the earthquakes from space. The PAP is made up of three sensors, retarding potential analyzer (RPA), ion drift meter (IDM), and ion capture meter (ICM). The main objective of IDM is to detect the ion bulk velocity from -3 to 3 km/s with a precision better than +/- 20 m/s, perpendicular to the sensor-look direction. The IDM sensor consists of six-layer grids and a collector. The grid is made of beryllium copper, plated with gold. Polyimide is used to achieve electrical insulation between grids. The grid transmission rate of signal layer is designed to be 82.64%, and total transmission rate of six layers is 31.85%. To ensure the performance of IDM, the side length of the square aperture and the depth of the sensor are designed to be 40 and 20 mm, respectively. The radius of segmented planar collector is 50 mm. The arrival angle of the ions is determined by measuring the ratio between the currents from the different electrically isolated collector segments. Accordingly, velocity perpendicular to the sensor-look direction is calculated, based on arrival angle and ion velocity parallel to the sensor-look direction which is measured by the RPA. In addition, a wide-range and high-precision current measurement circuit is designed to measure the current of IDM. The preamplifier circuit has three measurement ranges, providing different amplification factors. The right measurement range is chosen automatically by the field programmable gate array (FPGA). The test results show that the circuit provides a total measuring dynamic range from 20 pA to 6 mu A with an accuracy better than 0.4%. Finally, the method of testing in the plasma environment and the measurement results are discussed. The plasma environment test of the IDM flight model is carried out in the Institute for Space Astrophysics and Planetology, National Institute of Astrophysics (INAF-IAPS). Since the plasma source is fixed to a large volume vacuum tank, the arrival angle of the plasma with respect to the sensor-look direction is changed by horizontally or vertically mounted IDM on the rotating platform in the vacuum tank. As the platform rotates, the performance of IDM is proved by testing different ion arrival angles in vacuum tank. The ion velocities along the Y and Z axes of the spacecraft are validated by testing the horizontal arrival angle and the vertical arrival angle respectively. The IDM test data are consistent with those obtained under the setting angle of the rotating platform. The experimental results show that the detector has good performance and will fulfill the mission goal of monitoring the bulk velocity of ion, perpendicular to the sensor-look direction.
Indexed BySCI ; EI ; CSCD
Citation statistics
Document Type期刊论文
Corresponding Author郑香脂
Recommended Citation
GB/T 7714
郑香脂,张爱兵,关燚炳,等. 电磁监测试验卫星离子漂移计探测技术[J]. 物理学报,2017,66(20):209401.
APA 郑香脂.,张爱兵.,关燚炳.,刘超.,孙越强.,...&丁建京.(2017).电磁监测试验卫星离子漂移计探测技术.物理学报,66(20),209401.
MLA 郑香脂,et al."电磁监测试验卫星离子漂移计探测技术".物理学报 66.20(2017):209401.
Files in This Item:
File Name/Size DocType Version Access License
20176620209401.pdf(521KB)期刊论文作者接受稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[郑香脂]'s Articles
[张爱兵]'s Articles
[关燚炳]'s Articles
Baidu academic
Similar articles in Baidu academic
[郑香脂]'s Articles
[张爱兵]'s Articles
[关燚炳]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[郑香脂]'s Articles
[张爱兵]'s Articles
[关燚炳]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.