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北斗卫星后向散射信号的星-星合成孔径成像系统:概念与可行性 被引量:2

A Synthetic Aperture System Based on Backscattering Signals of Compass Navigation Satellite:Concept and Feasibility
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摘要 该文提出了一种利用北斗卫星的后向散射信号形成的星-星双站合成孔径成像系统的概念,建立了该成像系统的北斗地球静止轨道卫星和地球同步轨道卫星以及地面站之间的几何模式,并依此模式和双站合成孔径雷达成像原理,从成像分辨率、信噪比、链路收支等性能参数论证了利用北斗卫星建立星-星双站合成孔径雷达对地成像观测的可行性,此外还提出了该系统在土壤湿度探测、地表演化的时空动力学特征研究、大气特性研究方面的遥感应用前景。 A concept of a bi-static geosynchronous synthetic aperture system, which is formed by reusing backscattered signals of Compass Navigation Satellite System (CNSS), is proposed. The geometric relations of a geostationary satellite of CNSS, located on a geosynchronous satellite receiver, which is illuminated by the backscattered energy of a satellite of CNSS, and a ground station is built up, and following the relations as well as principle of synthetic aperture radar, we expatiate the feasibility of the system by considering parameters such as imaging resolution, ratio of signal to noise and link budget, etc.. Besides, the potential remote sensing applications for measurement of terrain humidity, characteristics of space-time dynamics of changing of terrain surface and atmospheric characteristic, etc..
出处 《雷达学报(中英文)》 2012年第2期209-216,共8页 Journal of Radars
基金 国家高技术研究发展计划(863计划)(2011AA9B8)资助课题
关键词 北斗卫星 双站 星-星合成孔径成像 对地观测 Compass Navigation Satellite System (CNSS) Bi-static Imaging of synthetic aperture Observation ofearth
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