风云三号E星空间环境载荷综合探测技术

Comprehensive Detection Payload Technology for Space Environment of FY-3E Satellite

针对中国风云三号卫星运行的低地球太阳同步轨道,开展空间环境及粒子辐射效应监测,提出基于空间环境监测器Ⅱ型载荷的综合探测技术。在各载荷技术指标的地面研制过程中,通过标准放射源、等效信号源、粒子加速器和标准磁场等不同方式进行标定和实验验证。结果表明,多方向全能谱粒子探测的能量范围为30 keV~300 MeV,精度优于10%;磁场强度测量范围为-65023~+65023 nT,精度优于0.73 nT;电位探测范围为-32.4~+23.7 kV,灵敏度优于10 V;辐射剂量探测范围为0~3×10^(4) rad(Si),灵敏度优于8.3 rad(Si)。通过空间环境监测器Ⅱ型载荷对卫星运行轨道上的粒子辐射环境、原位磁场矢量变化、辐射剂量累积以及卫星表面电位变化等进行观测,可以为航天活动、卫星设计、空间科学研究及空间天气预警预报业务提供必要的数据支撑。

To monitor the space environment and its effects in the low-Earth sun-synchronous orbit of China’s FY-3 satellite,a comprehensive detection technology based on the type loads of the space environment monitor isⅡproposed.In the process of ground development,various technical indicators of the space environment compre-hensive detection payload have been calibrated and experimentally verified by different methods such as standard radiation source,equivalent signal source,particle accelerator and standard magnetic field.The results show that the multi-direction full-spectrum particle detection achieves an energy range of 30 keV–300 MeV,with the accuracy of≤10%.The magnetic field detection realizes the measurement range of-65023–+65023 nT,with the accuracy of≤0.73 nT.The potential detection realizes the measurement range of-32.4–+23.7 kV,with the sensitivity of≤10V.The detection of radiation dose realizes the measurement range of 0–3×10^(4) rad(Si),with the sensitivity of≤8.3 rad(Si).Through comprehensive observation of particle radiation environment,change of in-situ magnetic field vector,radiation dose accumulation and change of satellite surface potential in satellite operation orbit,the space environ-ment monitor provides necessary data support for space activities,satellite design,space science research and space weather early warning and prediction.