电磁监测试验卫星离子漂移计探测技术

发布时间：2018-03-23 16:44

本文选题：等离子体分析仪　切入点：离子漂移计　出处：《物理学报》2017年20期

【摘要】：依据电磁监测试验卫星的任务要求,自主研发了等离子体分析仪,用于探测电离层等离子体的离子密度、温度、成分、漂移速度和密度的涨落.等离子体分析仪由阻滞势分析器、离子漂移计和离子捕获计组成,其中离子漂移计用于探测离子垂直轨道方向的漂移速度.通过分析电离层等离子体的离子漂移速度特性,确定仪器的性能指标.离子漂移计传感器采用多层栅网压紧结构,栅网材料选用铍铜,各层栅网之间采用聚酰亚胺绝缘.依据技术指标,详细设计了离子漂移计传感器的窗口尺寸、传感器几何高度和收集极半径.在电子学电路设计时通过前放电路三个可调量程的设计,保证了电路测量范围和精度,并通过实验进行验证.在此基础上,借助意大利国家天体物理研究院行星际物理研究所的地面等离子体环境,完成了离子漂移计的等离子体环境测试.测试结果表明,离子漂移计垂直轨道方向漂移速度测量结果的变化趋势与转台设定值变化趋势一致,且测试精度指标满足设计要求,能够满足电磁监测试验卫星的任务需求.
[Abstract]:According to the mission requirements of the electromagnetic monitoring test satellite, a plasma analyzer was developed to detect the ion density, temperature and composition of ionospheric plasma. The fluctuation of drift velocity and density. The plasma analyzer consists of a retarded potential analyzer, an ion drift meter and an ion trapping meter. The ion drift meter is used to detect the ion drift velocity in the vertical direction of the ion orbit. By analyzing the ion drift velocity characteristics of ionospheric plasma, the performance index of the instrument is determined. Beryllium copper is used as the grid material and polyimide is used to insulate the grid. According to the technical specifications, the window size of the ion drift sensor is designed in detail. The geometric height and collector radius of the sensor are designed by the design of three adjustable ranges of the forward amplifier circuit, which ensures the measuring range and accuracy of the circuit, and is verified by experiments. With the help of the ground plasma environment of the interplanetary physics institute of the National Institute of Astrophysics of Italy, the plasma environment test of the ion drift meter has been completed. The results show that, The change trend of the drift velocity measurement results in the vertical orbit direction of ion drift meter is consistent with the change trend of the set value of the turntable, and the test precision meets the design requirements and can meet the mission requirements of the electromagnetic monitoring test satellite.
【作者单位】：中国科学院国家空间科学中心;天基空间环境探测北京市重点实验室;中国科学院大学;
【基金】：国家科技重大专项(批准号:Y26604AG90)资助的课题~~
【分类号】：TP212;V447

【相似文献】