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首页> 外文会议>IAF Space Systems Symposium;International Astronautical Congress >Mission and System Architecture for an Operational Network of Earth Observation Satellite Nodes
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Mission and System Architecture for an Operational Network of Earth Observation Satellite Nodes

机译：地球观测卫星节点运行网络的任务和系统结构

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Over the next few years, Europe will take important steps towards implementing the architecture of the Copernicus Space Component for Earth Observation (EO), fulfilling the needs of stakeholders concerned with land monitoring, marine monitoring, atmosphere monitoring, emergency management, security, and climate change. Nowadays, constellations and distributed networks of satellites are emerging as clear development trends in the space system market to enable augmentation, enhancement, and possibilities of new applications for future EO Missions. It is of paramount importance for Europe to properly analyse these trends and assess whether or not they could provide a competitive advantage for EO systems. The paper presents the mission and system architecture design of the H2020 ONION project, a European Union research activity that proposes a system concept to supplement in a progressive way the current European EO infrastructures and to serve emerging needs in an optimal fashion. Among several use cases considered, the ONION project focussed on proposing system architectures to provide competitive revisit time, data latency and image resolution for a demanding application scenario of interest: Marine Weather Forecast (MWF). A set of promising system architectures has been subject of a comprehensive assessment, based on mission analysis expertise and detailed simulation for evaluating several key parameters such as revisit time and data latency of each measurement of interest, on-board memory evolution and power budget of each satellite of the constellation, ground station contacts and inter-satellite links. The architectures are built with several heterogeneous satellite nodes distributed in different orbital planes. Each platform can embark different instrument sets, which provide the required measurements for each use case. A detailed mission analysis has then been applied to the selected architecture for the MWF use case, including refined data flow analysis to opt
机译：在未来几年里，欧洲将采取重要步骤实施哥白尼地球观测空间组件（EO）的架构，满足与土地监测、海洋监测、大气监测、应急管理、安全和气候变化相关的利益相关者的需求。如今，星座和分布式卫星网络正在成为空间系统市场的明显发展趋势，以实现未来地球观测任务的增强、增强和新应用的可能性。对欧洲来说，正确分析这些趋势并评估它们是否能为EO系统提供竞争优势至关重要。本文介绍了H2020 ONION项目的任务和系统架构设计，这是一项欧盟研究活动，提出了一个系统概念，以渐进的方式补充当前的欧洲EO基础设施，并以最佳方式满足新兴需求。在考虑的几个用例中，ONION项目侧重于提出系统架构，以提供有竞争力的重访时间、数据延迟和图像分辨率，以满足感兴趣的苛刻应用场景：海洋天气预报（MWF）。基于任务分析专业知识和详细模拟，对一组有前途的系统架构进行了全面评估，以评估几个关键参数，如每次感兴趣测量的重访时间和数据延迟、星座中每颗卫星的星上内存演化和功率预算、地面站接触和卫星间链路。该体系结构由分布在不同轨道平面上的多个异构卫星节点构成。每个平台可以装载不同的仪器，为每个用例提供所需的测量。然后，对MWF用例所选的体系结构进行了详细的任务分析，包括对opt的优化数据流分析

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