获取青藏高原积雪覆盖的高精度时空特性信息，对研究青藏高原地气耦合系统变化及全球气候效应具有重要意义。本项目综合多种卫星遥感观测优势，在现有高原积雪遥感监测技术基础上，以FY-3卫星多源观测资料为研究对象，实现多源观测资料联合反演青藏高原区域高时空分辨率积雪参数算法并进行地面验证，以满足对历史资料批量处理和后续实时产品延续的需求。研究内容包括：研究FY-3资料一级数据产品质量控制，实现青藏高原地区完整遥感图像生成；为解决被动微波遥感低空间分辨率的缺陷，研究被动微波遥感图像的混合像元分解及其超分辨率重建算法；研究多时相多光谱融合的积雪图像云覆盖去除方法；针对已有光学和被动微波遥感的雪水当量反演算法以及积雪雪盖判识算法中存在的问题，研究并建立基于FY-3多源卫星资料的青藏高原区域高时空分辨率的积雪参数定量反演算法及数据产品。为建立更长时段、满足科研与业务需要的高原积雪资料库提供科学技术基础。

It is very important for Tibetan Plateau - atmosphere coupled system effects of global climate change if we get seasonal snow-covered plateau temporal precision characteristic information. In this project, we integrated a variety of satellite remote sensing advantage and study the existing mature snow cover remote sensing technology. The FY-3 satellite multi-source observation data (from the optical to the microwave) was applied to achieve the high spatial and temporal resolution of Tibetan Plateau snow parameters using the joint inversion algorithms and automation comprehensive quantitative inversion technique. It should conduct ground verification to meet batch processing of historical data and the subsequent demand for real-time product. The main studies include: (1) the study of FY-3 data quality control, and the Tibetan Plateau complete remote sensing image generation through seamless image mosaic method; (2) In order to solve the defects of the passive microwave remote sensing low spatial resolution, we study passive microwave remote sensing image un-mixing and its super-resolution reconstruction algorithm; (3) the study of multi-temporal and multi-spectral image fusion for removal of cloud cover on the snow; (4) for the problems in the existed optical and microwave like MODIS and AMSR-E snow equivalent inversion algorithm, the high spatial and temporal resolution parameters of snow cover inversion algorithm for the Tibetan Plateau applying FY-3 multi-source data was studied and established at last. For the ultimate goal, it should provide scientific and technical database which can meet the research and business needs of the plateau snow information for a longer period of time.