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 is Ⅱproposed.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 0-3×104 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.
关键词
空间环境/粒子探测/电位探测/辐射剂量/磁场探测
Key words
space environment/particle detection/potential detection/radiation dose/magnetic field detection
维普
万方数据