Ron Li

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IKONOS imagery has been used in many commercial, government, and research applications ranging from environment monitoring, to coastal change detection, and to national security. The high costs of IKONOS high end products ͑Pro and Precision products͒ make it extremely attractive to find practical methods that use lower-cost IKONOS Geo products to produce(More)
[1] The Mars Exploration Rover Opportunity investigated four rocks, informally dubbed Barberton, Santa Catarina, Santorini, and Kasos, that are possible stony meteorites. Their chemical and mineralogical composition is similar to the howardite, eucrite, and diogenite group but with additional metal, similar to mesosiderite silicate clasts. Because of their(More)
Geographic Information System (GIS) techniques have been used in numerous natural-resource applications. This thesis presents GIS-based applications in analysis of eroded factors and examines the responses to the shoreline changes. The south shore of Lake Erie from Cranberry Creek to Sheldon Marsh was selected as the study area. Recession modeling of(More)
This demonstration will be presented at the 2003 National Conference on Digital Government Research to accompany a short paper entitled " Integration of Multi-Source Spatial Information for Coastal Management and Decision Making ". The demonstration presents the two-year outcomes of our Digital Government project " Digitalization of Coastal Management and(More)
This paper presents the second-year outcomes of our Digital Government project " Digitalization of Coastal Management and Decision Making Supported by Multi-Dimensional Geospatial Information and Analysis ". One of the primary objectives of the second year is to develop and integrate multiple spaceborne, airborne, and in-situ remotely sensed measurements,(More)
Shoreline mapping and shoreline change detection are critical for safe navigation, coastal resource management, coastal environmental protection, and sustainable coastal development and planning. This paper reports the results of IKONOS geopositioning accuracy improvement, showing that a 1-2 meter accuracy can be achieved from 1m-resolution IKONOS Geo(More)
High-precision topographic information from all available data is crucial to many landing site geological and engineering applications. At the same time, precise navigation and localization of the rover as it traverses the Martian surface is important both for its safety and for the achievement of its engineering and scientific objectives. In this paper, we(More)
This paper presents the technology of mapping and rover localization at the two landing sites, Gusev and Meridiani, for the 2003 Mars Exploration Rover (MER) mission. The rover localization and landing site mapping technology is based on the incremental bundle adjustment of an image network formed by Pancam, and Navcam stereo images. The developed(More)
The recently approved ExoMars rover is the first element of the ESA Aurora programme and is slated deliver the Pasteur exobiology payload to Mars by 2013. The 0.7 kg Panoramic Camera will provide multispectral stereo images with 65° field-of-view (1.1 mrad/pixel) and high resolution (85 µrad/pixel) monoscopic " zoom " images with 5° field-of-view. The(More)