航天光学遥感探测器滤光片环境考核方法

滤光片是航天光学遥感探测器的关键部件,其环境稳定性直接影响到探测器的光谱响应特性。文章以现有的航天器、电子元器件、光学膜层等环境考核标准为基础,参考欧空局、DALSA(加拿大数字影像器件公司)等的考核条件,并结合在遥感相机研发生产过程中与滤光片相关的环境考核项目,首次提出了一套针对航天光学遥感探测器滤光片的环境考核方法,给出了考核项目、考核流程、参考试验条件、测试项目、测试方法。考核项目包括高低温循环、热真空、热存储、湿度、辐照考核;测试项目包括光谱特性测试、膜层牢固度测试。该方法已在遥感型号产品上实施并得到在轨和地面试验验证,可作为滤光片环境考核的参考。

Environmental adaptability assessment of the filter of space optical remote sensor detector

The optical filter is one of the key components of the space optical remote sensor detector. The environmental stability of the film has a direct impact on the spectral response characteristics of the detector. Based on the existing environmental adaptability assessment standards concerning spacecrafts, electronic components and optical layers, we put forward a series of specified environmental assessment approaches for optical filters, including the assessment items and process, the experimental conditions, as well as the measurement & test items and methods. They are in line with the assessment conditions proposed by ESA and DALSA, and the test programs for the optical filter in the developing process of remote sensing camera. The assessment items include the thermal cycling test, the thermal vacuum test, the thermal storage test, the humidity test, and the gamma ray irradiation test. The measurement items include the spectral characteristics and the firmness of the film layer. The method are implemented in the remote sensing satellites, and verified by flight and ground tests, to serve as a guide for the environmental assessment for optical filters.