ARGOS: A fractioned geosynchronous SAR
ARGOS: A fractioned geosynchronous SAR
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DOI：
10.1016/j.actaastro.2015.11.022
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发表时间：
2015-12
影响因子：
3.5
通讯作者：
A. M. Guarnieri;O. Bombaci;T. Catalano;C. Germani;C. Koppel;F. Rocca;G. Wadge
中科院分区：
文献类型：
--
作者：
A. M. Guarnieri;O. Bombaci;T. Catalano;C. Germani;C. Koppel;F. Rocca;G. Wadge
地球静止轨道上的N个合成孔径雷达传感器群将提供大陆区域内的全天全天候成像，使用直接下载进行真实的时间数据利用。回波的相干组合将使信噪比提高N2倍，从而实现公制分辨率、20-40分钟的最短观测时间、多极化和干涉成像。滑坡、洪水、土壤湿度变化、火山活动、同震运动、基础设施变形和柱状水汽图等快速变化的事件将首次从空间连续监测。观测区域将有一个足迹高达一千公里宽，使用电子转向设置，随时随地在一个大陆。在本文中，我们利用“先进的雷达地球同步观测系统”的初步概念定义，提供应用程序，可扩展的扩展，从一个单一的单基地合成孔径雷达的星座的有源和无源传感器，讨论发射战略和雷达有效载荷和比较文献中提出的概念。
A swarm of N Synthetic Aperture Radar (SAR) sensors in a geostationary orbit would provide all-day-all-weather imaging within a continental region, using direct downloading for real time data exploitation. The coherent combinations of the echoes would improve the signal-to-noise ratio by a factor of N2, leading to metric resolution, 20–40 min minimum observation time, multi-polarimetric and interferometric imaging. Fast evolving events like landslides, floods, soil moisture changes, volcanic activity, co-seismic motions, infrastructure deformations and columnar water-vapor maps would be monitored continuously from space for the first time. The observed area would have a footprint up to a thousand kilometers wide, set using electronic steering, anytime, and anywhere within a continent. In this paper, we take advantage of the preliminary concept definition of the “Advanced Radar Geosynchronous Observation System” ARGOS, to provide applications, scalable extension from a single monostatic SAR to a constellation of active and passive sensors, discussion of launch strategies and Radar payload and comparison with concepts proposed in the literature.