基于场景模型的热红外遥感成像模拟方法

为实现升空后运行的卫星的整体性能处于最佳状态,通常在卫星发射前,采用计算机仿真的方法对从地表到影像获取的整个遥感物理过程进行模拟.针对现有模拟方法不能全部采用辐射传输、成像等物理模型,实现大场景、复杂地表覆盖情况下的热红外遥感成像模拟,在基于场景模型的热红外遥感成像模拟基础上,将模拟系统分为地表场景模拟、大气作用模拟及传感器成像场景,重点对模拟各场景所涉及的物理模型和算法进行了综述和分析,并初步构建了大场景、复杂地表覆盖下模拟的技术框架,是对热红外遥感成像模拟的一种全新而有益的尝试,对相关研究工作也有一定参考价值.

METHODS FOR SIMULATING INFRARED REMOTE SENSING IMAGES BASED ON SCENE MODELS

In order to make cost-versus-quality of launched satellite trade-offs,computer technology can be used to simulate the physical process of infrared imaging from land surface to archiving images before launching satellite.The available simulating methods are not able to simulate big-footprint scene and complicated land cover types by using thermal radiation transfer models and imaging physical models.Due to this reason,we selected a scene model to setup simulation system which composed land surface scene,atmospheric effect scene and sensor imaging scene.In this study,all kinds of relevant methodology about simulation utilizing scene models were analysed,a proposal of thermal infrared remote sensing simulating system was suggested which could be used to simulate wide area scene and different land cover types.This work is a new approach for infrared imaging simulation and it is helpful for relevant researching works.