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Summary of Proposal MTH3062

TitleLimitations of interferometry RADAR by satellite in urban aeras
Investigator Aubrun, Michelle - University of Montreal, Geography
Team Member
Professor CAVAYAS, Francois - Tutor, University of Montreal - Geography
SummaryMy study consists to determine the pros and cons of interferommetry RADAR by satellite in urban aeras compare to other technics, like photogrammetry. First of all, I would like to study the impact of the baseline's length on the precision of Digital Elevation Models (DEMs). Theoretically, more the baseline is important, more the DEM is precise. Then, I would like to calculate the height of observable buildings thanks to the phase information. For this, I need a Digital Ground Model (DGM). If my first experiment confirmes the theory, I will use the DEM formed by the more important baseline to extract the DGM. Although the DEMs formed by important baseline are precise, the ambiguity height is weak.Thus, the phase of the high buildings is uncorrectly unwrapped, so the height of the building is wrong. However, in the DEMs formed by small baseline, the height of the building is correctly unwrapped but not precise. So, I will use the two DEMs to calculate the height of the building. Then, I will try to extract the building thanks to the amplitude information. For this, I will use noise and edge filters and the inforation on the coherence. Of course, I will distinct industrial and residential aeras. At the end, I would like create a program that extract the building and calcul the height of the building automatically. I would like good resolution image in amplitude and phase of Montreal, Canada or San Francisco, United States in ascendant and descendant orbit to reach my objectives. My delivrable will be the program created. I will test it on Montreal and San Francisco becauseI have already the DEM and DGM of these cities. I don't need fund because the university of Montreal furnishes me a computer and the softwares I need.

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