The Copernicus L-band SAR mission ROSE-L (Radar Observing System for Europe) (Conference Presentation)
The Copernicus L-band SAR mission ROSE-L (Radar Observing System for Europe) (Conference Presentation)
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DOI：
10.1117/12.2534743
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发表时间：
2019-10
期刊：
影响因子：
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通讯作者：
N. Pierdicca;M. Davidson;M. Chini;W. Dierking;S. Djavidnia;Joerg Haarpaintner;G. Hajduch;G. V. Laurin;M. Lavalle;C. López-Martínez;T. Nagler;B. Su
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文献类型：
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作者：
N. Pierdicca;M. Davidson;M. Chini;W. Dierking;S. Djavidnia;Joerg Haarpaintner;G. Hajduch;G. V. Laurin;M. Lavalle;C. López-Martínez;T. Nagler;B. Su
哥白尼是欧盟的地球观测和监测方案，其一个基本要素是发展和运作一个独立、专用和可持续的天基观测基础设施。六个系列的所谓哨兵卫星确保连续性，直到2026-2028年(第一代)。“CSC扩大”方案包括被欧洲联盟委员会(欧委会)确定为未来几年执行的优先事项的新特派团。在目前处于初步设计阶段的新任务中，哥白尼L波段SAR将通过填补目前哥白尼卫星星座的观测空白来支持欧洲的主要政策目标，并将为各种业务服务提供更好的连续性，支持下游商业和机构用户。这次飞行任务目前被命名为“欧洲雷达观测系统L”(ROSE-L)，以表明它有能力与以不同频率运行的其他哥白尼合成孔径雷达空间要素(特别是在C波段运行的哨兵-1)作为系统系统的一个要素协同工作。在初步设计该系统的工作框架内，欧空局飞行任务咨询小组(MAG)协助就飞行任务要求提供咨询意见。这些要求主要是受到哥白尼服务需求的启发，这些需求是由MAG查看以前的研究、欧共体哥白尼服务演变文件以及不同应用领域的专门研讨会的结果而收集的。由于波长更长，穿透能力更强，从太空进行的L波段合成孔径雷达观测提供了其他方式无法收集的额外信息，例如关于体积目标(植被、森林、冰等…)的信息。或水分含量。罗斯-L能够利用关于土地、灾害和地质灾害以及冰冻圈的独特信息，解决来自太空的重要测量差距。这包括收集关于植被覆盖地区的地面运动和高分辨率土壤水分信息，提供植被生物量数据，改善土地覆盖。植被散射贡献的量化是确保干涉应用中信号的更好一致性的另一个关键因素。L波段较长波长的独特相互作用机制也将在利用多频率数据集时带来额外的信息，例如用于海冰观测。作为复杂任务系统的一个组成部分，ROSE-L将支持哥白尼观测的整体连续性，例如提高其精度、产品质量、所收集数据的时间和空间分辨率。会议期间将总结ROSE-L将能够为用户社区提供什么，讨论在L频段可以收集哪些独特的信息，以及哪些任务性能参数(分辨率和覆盖)被认为是满足用户需求所必需的。
A fundamental element of Copernicus, the EU's Earth Observation and monitoring programme, is the development and operation of an independent, dedicated and sustained space-based observation infrastructure. Six series of so-called Sentinel satellites ensure continuity until 2026-2028 (First Generation). The “CSC Expansion” programme includes the new missions that have been identified by the European Commission (EC) as priorities for implementation in the coming years. Among the new missions presently under preliminary design phase, the Copernicus L-band SAR will support key European policy objectives through the filling of observation gaps in the current Copernicus satellite constellation and will provide enhanced continuity for diverse operational services, supporting the down-stream commercial and institutional users. The mission is presently named “Radar Observing System for Europe L” (ROSE-L), to indicate its capability to work in synergy with other Copernicus SAR-based space elements operating at a different frequency (particularly Sentinel-1 operating at C-band) as an element of a System of Systems (SoS). In the frame of the work carried out to preliminarily design the system, the ESA Mission Advisory Group (MAG) helps to advice on the mission requirements. The requirements are mainly inspired by the Copernicus service needs, that are being collected by the MAG looking at previous studies, at the EC Copernicus Service evolution document, as well as at the outcome of specialised workshops in diverse application fields. Due to the longer wavelength and enhanced penetration capabilities, L-Band SAR observations from space provide additional information that cannot be gathered by other means, for instance on volumetric targets (vegetation, forest, ice, etc…) or on moisture content. ROSE-L is capable to address important measurement gaps from space, leveraging unique information on land, disasters and geohazards and the cryosphere. This includes the collection of ground motion and high-resolution soil moisture information on vegetated areas, the provision of vegetation biomass data, improved land cover. The quantification of the vegetation scattering contribution is another key factor to ensure a better coherence of the signal for interferometric applications. The unique interaction mechanisms of L-band longer wavelength will also bring additional information when exploiting multifrequency datasets, e.g., for sea ice observations. Being an element of a complex mission system, ROSE-L will support the overall continuity of the Copernicus observations, e.g., improving their accuracy, the products quality, the temporal and spatial resolution of collected data. A summary of what ROSE-L will be able to provide to the user community will be given during the conference, discussing what unique information can be gathered at L-band and which mission performance parameters (resolution and coverage) are considered necessary to fulfill the user needs.