Combined Mars Global Surveyor data processing for precise topographic mapping
Abstract
Mars control network and topographic mapping have been studied since the 1960s to continuously support Mars exploration missions and scientific research. In this thesis, the high-resolution stereo images and laser altimetry data collected in the Mars Global Surveyor mission are combined and processed in a rigorous mathematical model to produce a precise control network, digital elevation models, and orthoimages. The comprehensive evaluation reveals a considerable registration offset between the laser altimetry data and the high-resolution images. To correct this mis-registration, a bundle adjustment combining the laser altimetry ranges, high resolution images, and orbital trajectory data is developed under a rigorous mathematical model. In this way, the image orientation is refined and can be used for precise topographic mapping. This study provides a comprehensive evaluation and estimation of the quality of the bundle adjustment. A sufficient number of corresponding points are collected through image matching and their precise 3-D ground positions are determined with the refined image orientation to generate digital elevation models and orthoimages. Presented in this thesis are results for three of the selected candidate landing sites for the 2003 Mars Exploration Rover missions.
Degree
Ph.D.
Advisors
Shan, Purdue University.
Subject Area
Civil engineering|Geography
Off-Campus Purdue Users:
To access this dissertation, please log in to our
proxy server.