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 Ⅱ loads of the space environment monitor is proposed. In the process of ground development, various technical indicators of the space environment comprehensive 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 environment monitor provides necessary data support for space activities, satellite design, space science research and space weather early warning and prediction. 

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0~3×104 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。