文章基本信息

标题：BRIDGING LAND-BASED MOBILE MAPPING USING PHOTOGRAMMETRIC ADJUSTMENTS
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作者：T. Hassan ; C. Ellum ; N. El-Sheimy 等
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2006
卷号：XXXVI Part 1
出版社：Copernicus Publications
摘要：The increasing demand for up-to-date 3-D geographic information systems (GIS) in planning, transportation, and utility management applications poses significant challenges to the Geomatics community. Of all the challenges in acquiring, building, maintaining, and using GIS, none is more central than that of data acquisition. Obtaining the required spatial and attribute data by conventional methods such as aerial photogrammetry and terrestrial surveying is expensive, slow, or inaccurate. These methods are, therefore, not well suited for rapid updating. Fortunately, however, the development of land-based mobile mapping systems (MMS) has opened a new avenue to meet these challenges. Land-based MMS are capable of providing fast, efficient, cost-effective and complete data acquisition. As such, they are an innovative technology for creating and updating 3-D GIS databases both quickly and inexpensively. Basically, MMS are based on integrated navigation systems, mainly the integration of GPS and inertial sensors. The integration of these two technologies results in navigation systems with extremely accurate velocity, position, and attitude with almost no noise or time lags. Under ideal conditions, the GPS measurements are consistent in accuracy and availability throughout the survey mission. However, for land-based MMS, such conditions do not often exist. This is especially prevalent in urban centres and when encountering highway overpasses or tunnels. The overall objective of this paper is investigating a purely photogrammetric strategy for georeferencing of short image sequences as backup system when the navigation solution is not available or not sufficiently accurate, a typical case during GPS signal outage periods. A photogrammetric strategy for the georeferencing of image sequences acquired by MMS is presented. These objectives are accomplished through the simulation of the University of Calgary VISAT (Video, Inertial, and SATellite GPS) mobile mapping system
关键词：Photogrammetry; Adjustment; Simulation; Georeferencing; GPS/INS; Mobile Mapping