A new method of SAR images geometric rectification under undulate areas based on the application of navigation

Ren, Sanhai; Chang, Wenge

doi:10.1109/apsar.2009.5374185

Cited by 4 publications

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the undulating terrain (e.g., elevation between 400 and 500 meters), the general effect of correction doesn't reach the demand of applications. The currently used models in satellite and airborne SAR images are rigorous 2D/3D physical models [1,[4][5][6][7][8][9][10][11][12][13] . Though Dowman and Dolloff [14] applied three-dimensional polynomial models to Radarsat-1 SAR images, they did not describe the conditions of experimentation (study site and terrain relief, cartographic data and accuracy).…”

Section: Introductionmentioning

confidence: 99%

A 3-dimensional polynomial model for geometric corrections of airborne SAR images

Jin

Liao

2010

SPIE Proceedings

View full text Add to dashboard Cite

Terrain undulations have significant influence on the geometric and radiometric quality of high-resolution airborne synthetic aperture radar images. The correction of these effects becomes indispensable before image analyzing. The paper presents a new approach to the geometric correction under unknown parameters of the SAR imaging geometry. Using a three-dimensional (3D) polynomial model, the image of the testing area is geo-corrected. The selection of polynomial order is emphasized. The best appropriate polynomial order for testing area is selected after testing nine different polynomial orders which are 1-1-0, 1-1-1, 2-2-0, 2-2-1, 2-2-2, 3-3-0, 3-3-1, 3-3-2, 3-3-3. The resulting image is a fully terrain corrected one and could be used for real-time monitoring and evaluating emergencies (e.g., hurricanes or earthquakes).

show abstract