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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Digital mapping of the Mars Pathfinder landing site: Design, acquisition, and derivation of cartographic products for science applications
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Digital mapping of the Mars Pathfinder landing site: Design, acquisition, and derivation of cartographic products for science applications

机译：火星探路者着陆点的数字地图：科学应用制图产品的设计，获取和派生

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The Imager for Mars Pathfinder (IMP) acquired more than 16,000 images and provided panoramic views of the surface of Mars at the Mars Pathfinder landing site in Ares Vallis. This paper describes the stereoscopic, multispectral IMP imaging sequences and focuses on their use for digital mapping of the landing site and for deriving cartographic products to support science applications of these data. Two-dimensional cartographic processing of IMP data, as performed via techniques and specialized software developed for ISIS (the U. S. Geological Survey image processing software package), is emphasized. Cartographic processing of IMP data includes ingestion, radiometric correction, establishment of geometric control, coregistration of multiple bands, reprojection, and mosaicking. Photogrammetric processing, an integral part of this cartographic work which utilizes the three-dimensional character of the IMP data, supplements standard processing with geometric control and topographic information [Kirk et al., this issue]. Both cartographic and photogrammetric processing are required for producing seamless image mosaics and for coregistering the multispectral IMP data. Final, controlled IMP cartographic products include spectral cubes, panoramic (360 deg azimuthal coverage) and planimetric (top view) maps, and topographic data, to be archived on four CD-ROM volumes. Uncontrolled and semicontrolled versions of these products were used to support geologic characterization of the landing site during the nominal and extended missions. Controlled products have allowed determination of the topography of the landing site and environs out to approx 60 m, and these shaped the observed landing site. We conclude by summarizing several lessons learned from cartographic processing of IMP data.
机译：火星探路者成像仪（IMP）采集了16,000多幅图像，并在Ares Vallis的火星探路者着陆点提供了火星表面的全景。本文介绍了立体多光谱IMP成像序列，并着重介绍了其在着陆点数字地图绘制以及用于支持这些数据的科学应用的制图产品中的应用。强调了IMP数据的二维制图处理，该处理是通过为ISIS开发的技术和专用软件（美国地质调查局图像处理软件包）执行的。 IMP数据的制图处理包括摄取，放射线校正，几何控制的建立，多个波段的融合，重投影和镶嵌。摄影测量处理是这项制图工作不可或缺的一部分，它利用IMP数据的三维特征，通过几何控制和地形信息补充了标准处理[Kirk等，本期]。制图和摄影测量处理对于生成无缝图像镶嵌图和共配准多光谱IMP数据都是必需的。最终受控的IMP地图产品包括光谱立方，全景（360度方位角覆盖）和平面（顶视图）地图以及地形数据，这些数据将存储在四个CD-ROM卷中。这些产品的非受控和半受控版本用于在名义任务和扩展任务期间支持着陆点的地质特征。受控产品可以确定着陆点的地形并包围大约60 m，这些都可以形成观察到的着陆点。最后，我们总结了从IMP数据的制图处理中学到的一些经验教训。

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