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首页> 外文期刊>Space technology >A SOUTH AFRICAN RESOURCE MANAGEMENT MISSION BASED ON THE MULTI-SENSOR MICROSATELLITE IMAGER MSMI
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A SOUTH AFRICAN RESOURCE MANAGEMENT MISSION BASED ON THE MULTI-SENSOR MICROSATELLITE IMAGER MSMI

机译：基于多传感器微卫星IMMAGER的南非资源管理任务

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Several African nations have embarked on indigenous space programs based on small satellites with the objectives of reaping the benefits of remote sensing information, driving national development of technological expertise, and fostering education through participation and inspiration. In particular, South Africa has launched a comprehensive program which so far has resulted in the successful launch of SUNSAT and the production of various satellite components and complete systems manufactured for export. Currently, a technology demonstrator designated ZA-002/Sumbandila scheduled for launch in 2007 is being completed. It will blaze the trail for the next generation remote sensing platform of the 200 kg class, built around a sophisticated hyperspectral imager dubbed the Multi-Sensor Microsatellite Imager (MSMI) which is capable of providing images of high spatial and spectral resolution in various bands. This paper summarizes an assessment study which was carried out at the University of Stellenbosch, South Africa in cooperation with the Technical University of Munich, Germany. The point of departure for the study is marked by the requirements posed by agricultural applications in South Africa. It then carries on to develop a baseline design of a satellite bus and its subsystems suitable to carry the MSMI instrument and meet the agricultural and other objectives of the mission. A typical operational profile is discussed and estimates of performance in terms of benchmark figures, such as area imaged per day and revisit times, are given. Finally, it is considered how multiple similar spacecraft based on MSMI can be operated in a constellation to expand the capabilities from a South Africa-specific system to an African Resource Management (ARM) constellation, jointly implemented by African nations with space capabilities and addressing the particular needs of the continent.
机译：几个非洲国家已着手基于小卫星的土著空间计划，其目标是从遥感信息中受益，推动国家技术专长的发展，并通过参与和启发来促进教育。特别是，南非已经启动了一项全面计划，迄今为止，该计划已成功启动了SUNSAT，并生产了各种用于出口的卫星组件和整套系统。目前，定于2007年启动的名为ZA-002 / Sumbandila的技术演示器正在完成。它将为200公斤级的下一代遥感平台开创先河，该平台围绕一个精密的高光谱成像仪（称为多传感器微卫星成像仪（MSMI））构建，该成像仪能够在各个波段提供高空间和光谱分辨率的图像。本文总结了一项评估研究，该评估研究是在南非斯泰伦博斯大学与德国慕尼黑工业大学合作进行的。该研究的出发点是南非农业应用提出的要求。然后，它继续开发卫星总线及其子系统的基线设计，以适合于携带MSMI仪器并满足任务的农业目标和其他目标。讨论了典型的操作配置文件，并根据基准数据（例如每天成像的区域和重新访问时间）给出了性能估算。最后，考虑了如何在一个星座中操作多个基于MSMI的类似航天器，以将能力从南非专用系统扩展到非洲资源管理（ARM）星座，这是由非洲国家与太空能力共同实施并解决的。该大陆的特殊需求。

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