Simulation and evaluation of the quality and availability of typical GLI ocean image

摘要

＜正＞ ADEOS-Ⅱ satellite will be launched in the near future. It collocates many remote sensing instruments in the same platform. Among them, Global Image （GLI） is considered to be a main sensor which will play a key role. In order to understand the characteristics of future GLI ocean color images, a simulation and evaluation of the quality and availability of GLI typical ocean image has been done. In the paper, we first introduce the simulation models briefly, and simulate typical cases of radiance images at visible channels, in which the radiance distribution is based on geographic location, the satellite orbital parameters and sensor properties. A method, complex signal noise ratio （CSNR） to evaluate the image quality and availability, is developed according to the characteristics of image. Meanwhile, a series of CSNR images are generated from the simulated radiance components for different cases, which can be used to evaluate the quality and availability of GLI images before the ADEOS-Ⅱ is placed in orbi