静止轨道高分辨率相机Geo-Oculus方案论证研究

Research on Geo-Oculus——a Geostationary High Resolution Camera

Geo-Oculus是欧空局于2008年开展的一项详细论证工作,它用于讨论在地球静止轨道上工作的对地观测卫星如何实现对全球环境与安全进行高空间分辨率和高时间分辨率监视的情况。Geo-.Oculus相机的主要任务是监视欧洲的灾害(水灾、山崩和暴风雨等)、火灾、海藻分布情况和水质,它还具备对石油泄漏和海岸线上的腐蚀物和沉淀物转移的监视能力。Geo-Oculus相机同时具有高空间分辨率和高时间分辨率的特点,其工作波段覆盖紫外、可见、近红外、短波红外和远红外区域,并可被细分为二十多个通道。该相机的可见光通道的地面分辨率可达到21m,紫外通道的为40m,而远红外通道的为750 m。该相机方案论证从工作模式、波段、光学分辨率和焦平面选型等方面展开。这项论证工作是针对静止轨道高分辨率相机方案研究的一个很好的案例,为下一步的详细设计和研制工作奠定了基础。

Geo-Oculus is a study approached by European Space Agency in 2008 with the objective to enable observations of the global environment and security combining high resolution and real-time monitoring in geostationary orbit.Its main tasks are disaster monitoring（floods,large landslides and storms）,fire monitoring,algal bloom detection and water quality monitoring.In addition,the Geo-Oculus also has the ability of collecting oil slick environmental information and monitoring erosion/sediment transport on the European shoreline.The Geo-Oculus has the capability of high resolution and real-time observing.It also offers the images in more than 20 spectral bands covering UV（resolution of 40m）,VS （resolution of 21m）,VNIR,MIR and TIR（resolution of 750m）.The Geo-Oculus study is a significant prestudy of the high resolution and real-time monitoring geostationary satellite that will steadily establish the foundation of further detailed design and research.