地理因子对卫星成像质量影响预估方法研究

摘要

Research on the affect of geography factors on the satellite imaging mainly focuses on pre-evaluating the influence to provide auxiliary decision-making information for satellite schedule. Taking illumination, cloud coverage and terrain into account, an influence pre-evaluation model of geography factors on visible light sensor imaging is presented to calculate the solar radiation received by spaceborne visible light sensor and considering the terrain feature. An influence pre-evaluation model of geography factors on SAR imaging is also presented to calculate the geometric distortion. Taking advantage of ArcGIS.both models are conceived and influence pre-evaluating methods are introduced based on the corresponding models. Then an application based on the ArcGIS software is developed.%重点研究地理因子对卫星成像质量的影响,预估影响程度,为卫星规划调度提供辅助决策信息.本文分别分析光照、地形起伏、云层3个地理因子对可见光传感器成像质量的影响,给出考虑这些因素的可见光传感器辐射接收计算公式,并结合ArcGIS分析功能,建立了地理因子对可见光传感器成像质量影响预估模型.同时,考虑地形起伏对SAR成像的影响,给出了利用DEM数据求几何畸变系数的方法,利用ArcGIS建立地理因子对SAR成像质量影响预估模型.两个模型都给出了成像质量影响程度预估值计算方法,最后,本文基于ArcGIS软件实现其原型系统.