光学遥感卫星信息获取能力指数的评估

发布时间：2018-09-06 16:00

【摘要】：提出了一种客观评估遥感卫星获取信息能力的指数模型。分析了影响遥感卫星信息获取能力的主要因素,包括运行轨道、成像分辨率、成像幅面、姿态机动能力等。以目标综合辨识量作为衡量标准,建立了涵盖成像分辨率、目标重访、姿态机动能力等要素的信息获取能力指数评价模型。介绍了模型的实现流程和具体步骤。该模型集成目标获取数量和目标获取精度两个维度信息,可实现遥感卫星信息获取能力的综合评估。以世界观测(Worldview)卫星系列、昴星团(Pleiades)和高景一号(Superview-1)等国内外光学遥感卫星为例进行了验证分析。结果表明,该指数模型能够对性能各异遥感卫星的信息获取能力做出准确评估,如WorldView-3的分辨率不到WorldView-1的分辨率的两倍,但信息获取能力却是其是3倍多;Superview-1分辨率比Pleiades高,但实际信息获取能力还不到后者的一半。得到的结果验证了提出模型的有效性,表明提出的模型可为综合评价光学遥感卫星遥感能力提供量化参考,为光学遥感手段的发展提供评估模型支持。
[Abstract]:This paper presents an index model for objectively evaluating the ability of remote sensing satellites to acquire information. The main factors affecting the ability of remote sensing satellite information acquisition are analyzed, including orbit, imaging resolution, imaging format, attitude maneuverability and so on. An index evaluation model of information acquisition capability including imaging resolution, target revisiting and attitude maneuvering ability is established. The realization flow and concrete steps of the model are introduced. The model integrates the two dimensional information of target acquisition quantity and target acquisition accuracy and can realize the comprehensive evaluation of remote sensing satellite information acquisition capability. The verification and analysis of (Worldview) satellite series, Pleiades (Pleiades) and Superview-1 optical remote sensing satellites at home and abroad are carried out. The results show that the exponential model can accurately evaluate the information acquisition ability of remote sensing satellites with different performances. For example, the resolution of WorldView-3 is less than twice the resolution of WorldView-1, but the ability of information acquisition is more than three times that of Superview-1, which is higher than that of Pleiades. But the actual access to information is less than half of the latter. The results show that the proposed model can provide a quantitative reference for the comprehensive evaluation of remote sensing capability of optical remote sensing satellite and provide evaluation model support for the development of optical remote sensing means.
【作者单位】：中国科学院国家空间科学中心;北京市遥感信息研究所;
【基金】：国家自然科学基金重点基金资助项目(No.9140A22020215JB08339)
【分类号】：TP751;V443.5

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