This paper introduces a kind of micro photometer with the advantages of light weight and small volume for the ionosphere detection. It can retrieve the total electron content (TEC) of ionosphere by measuring the atomic oxygen airglow in form of far ultraviolet radiation with a wavelength of 136.5 nm. The principle of detection and the design scheme of the photometer are presented. The integration and the miniaturization of the reflecting mirror, the industrial-grade FUV detector and the electronics are realized through a proper design of the lightweight aluminum reflector and the anti-interference preamplifier. The one-kilogram level micro sensor is developed, which is applicable to the micro-nano satellite for ionosphere detection. By taking the advantages of multi-orbit constellation, large amount of data can be obtained by the micro optical ionospheric detector including the TEC distribution in the global ionosphere with high spatial and temporal resolutions, to provides a technical basis of payload for networked satellite detecting in the future.%文章介绍了质量小、体积小的微型电离层光学探测器技术,给出了探测器的探测原理和设计方案,通过探测原子氧远紫外夜气辉(136.5 nm)辐射强度,反演电离层总电子含量(TEC).采用轻量化铝反射镜、抗干扰电荷前放设计,实现反射镜、工业级远紫外探测器、电子学的一体化和小型化,研制出适用于微纳卫星的1 kg量级微型空间电离层光学探测器.该型探测器能够利用微纳星群多种轨道搭载,可获得丰富数据的优势,获取全球电离层高时空分辨率总电子含量分布,为未来实现卫星编队探测提供载荷研制基础.
展开▼
