面向陆表目标的光学遥感成像仿真系统研究

Terrestrial Objective-oriented Optic Remote Sense Imaging Simulation Research

基于光学遥感系统现有设计和约束条件,在满足项目成本、研制进度和过程风险等因素的情况下,如何优化图像品质,提升系统成像效能,是遥感设计研发人员需要考虑的重要方面。为了更好的支撑遥感系统研制的设计优化和决策,有必要开展链路成像模拟与像质性能预估。面向陆表场景和地物目标,文章基于遥感成像物理过程机理,对成像重要环节构建精细化的数学模型,并结合成像系统工程测试数据,迭代训练优化系统模型。经验证,系统仿真置信度优于0.83,可以实现光学遥感载荷的高真实度的成像模拟;并根据模型采用分层架构设计,开发了成像仿真软件,实现对陆表场景进行多波段、多种成像参数、多种分辨率和幅宽的光学成像仿真和结果可视化功能;并在载荷研制论证中开展应用,有效支撑遥感系统设计分析,提升总体效能。

Under the satisfying of project cost, schedule and process risk, remote sensor system designers and developers need mainly considering how to optimize image quality and promote system effectiveness within the existing design and constraints. Imaging simulation and the prediction of image quality can contribute to the design optimization and decision of system development. Based on the research of optical remote sensing mechanism, in this paper, the terrestrial objective-oriented fine-grained mathematic models of the vital steps in the imaging chain are built and trained combined with mass sensors’ engineering test data.System simulation dependability is better than 0.83 through the models verifying, which prove the imaging system model can realize the imaging simulation with high quality. Imaging simulation software was developed with layered architectural approach according the model, which has a variety imaging simulation function for many spectrums, different resolutions and widths, and results visual display. The research and software can be applied in the development and reasoning of remote sensor, and support the remote sensing design and analysis effectively, in addition improve overall effectiveness.