Limits to the resolution of elevation maps from stereo SAR images

摘要: Abstract In Synthetic Aperture Radar (SAR) interferometry from a satellite, the altimetric information is obtained phase difference of two focused complex images gathered by same sensor in passes along parallel or crossing orbits. The resolution such system improves when satellites displacement increased cross-track direction. maximum allowed displacement, limited speckle noise, increases with spatial SAR image. Excluding additive we show that achievable vertical better than slant range times cosine off-nadir angle for about 99 per cent image points. As an example, map Panamint Valley area calculated using repeated Seasat satellite. effect noise visible distance orbits low.