DEM generation and information extraction over Qushandao using Full-polarization SAR image

doi:10.3969/j.issn.1001-909X.2015.01.005

Abstract

Abstract: As Digital elevation model is an important geographic information, SAR(synthetic aperture radar) is one of the most effective means in digital elevation model extracting. Use Radarsat-2 fine Quad-polarization mode data (November 27, 2013)over Qushandao in Zhejiang province to figure out the polarization azimuth offset between two adjacent resolution cells, and then extract the gradient information and terrain elevation. Finally, test the accuracy of the digital elevation model by the measured data, whose average relative error turn out to be 20%,and the results showed that the main causes of errors is the change of the terrain basement caused by the sea clutter and the elevation deviation caused by the leaves and boughs of the vegetative cover.

Key words: DEM, SAR, full-polarization, Qushandao

CLC Number:

TP75

JIN Xu-chen, HAN Zhen, LIU Yu, JIN Song, SHEN Dong-liang, DU Le, WEI Wei. DEM generation and information extraction over Qushandao using Full-polarization SAR image[J]. Journal of Marine Sciences, 2015, 33(1): 33-38.

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