High Performance Optical Imaging Payloads for Smallsat Missions
High Performance Optical Imaging Payloads for Smallsat Missions
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适用于小型卫星任务的高性能光学成像有效负载
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
I. Tosh
中科院分区：
文献类型：
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作者：
G. Tyc;W. Larson;T. Butlin;N. Waltham;N. Morris;I. Tosh
本文介绍了我们认为是一个颠覆性的技术解决方案的小卫星光学成像任务，结合了一个新的系列相机，提供非常高的质量，高分辨率的成像，与低功耗的有效载荷控制器，处理器和存储器单元（PCPMU），提供多terrabit的板载数据存储和高速数据输出，在一个独特的低价格点。MDA与英国卢瑟福阿普尔顿实验室合作，正在开发RALCam系列高分辨率多光谱相机，能够从500公里高度进行高达0.5米的GSD成像。描述了产品系列中的两个相关摄像机系统，一个提供1.0 m GSD，另一个提供0.5 m GSD。这两款相机的关键性能规格。硬件测试结果也进行了总结。MDA正在将这些相机和有效载荷电子设备整合到一个极具价格竞争力的使命级解决方案中，该解决方案包括一个专门为RALCam高分辨率相机设计和优化的航天器，以及一个完整的地面部分，包括卫星控制和任务分配，上行链路和下行链路，以及图像处理和存档，从而产生非常高质量的图像和信息产品。MDA的光学航天器的设计，包括RALCam高分辨率相机也进行了描述，并给出了关键的性能参数。最后，总结了关键技术和价格点推动因素。第一个系统可能最早在2010年发射，我们预计这将改变业务级高分辨率光学遥感的经济性。
This paper describes what we believe is a disruptive technology solution for smallsat optical imaging missions, that combines a new line of cameras that provide very high quality, high resolution imaging, with a low power Payload Controller, Processor and Memory Unit (PCPMU) that provides multi-terrabit on-board data storage and high speed data output at a uniquely low price point. Working together with the Rutherford Appleton Laboratory in the UK, MDA is developing the RALCam family of high resolution multispectral cameras, capable of up to 0.5 m GSD imaging from a 500 km altitude. Two related camera systems in the product family are described, one that provides 1.0 m GSD and the other that provides 0.5 m GSD. Key performance specifications for both cameras are given. Hardware testing results are also summarized. MDA are incorporating these cameras and payload electronics into a highly price competitive mission level solution that includes a spacecraft designed and optimized specifically for the RALCam high resolution cameras and a full ground segment that includes the satellite control & tasking, uplink and downlinks, and image processing and archiving which produces very high quality image & information products. MDA’s optical spacecraft design that incorporates the RALCam high resolution cameras is also described and key performance parameters are given. Finally, concluding remarks are provided that summarize the key technology and price point enablers. The first system could be launched as early as 2010 and we expect this will change the economics of operational class high resolution optical remote sensing.