Georeferencing, feature extraction and change detection in Harbour and city areas using high-resolution satelite SAR images acquired from multiple sensors

Dan Johan Weydahl,Knut Eldhuset, Oystein B. Dick, Bjarne Langmoen Olsen

Geoscience and Remote Sensing Symposium（2012）

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摘要

The quality and usefulness of feature extraction and change detection will be governed by the geoposition accuracy of the SAR image. We show results from satellite SAR image pixel geolocation accuracy using deployed radar corner reflectors as reference targets. The best accuracy (latitude, longitude) is below one meter. We have also developed algorithms that are using stereo acquisitions to obtain decimeter geolocation accuracies in XYZ of the high-resolution satellite SAR images. We demonstrate how high-resolution satellite SAR image modes can be used to extract man-made features in harbors and city areas.

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关键词

feature extraction,geophysical image processing,object detection,position measurement,radar imaging,remote sensing by radar,SAR image geoposition accuracy,change detection,city areas,decimeter geolocation accuracies,feature extraction,georeferencing,harbour areas,high resolution satellite SAR images,latitude accuracy,longitude accuracy,multiple sensors,radar corner reflectors,stereo acquisitions,SAR,change detection,geolocation

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