,A novel DEM reconstruction strategy based on multi-frequency InSAR in highly sloped terrain

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Interferometric Synthetic Aperture Radar(InSAR)has been proposed as a technique for the reconstruction of the Digital Elevation Model(DEM),which is widely used in global terrain mapping mission[1].The DEM reconstruction methods of In SAR technique are usually based on the so-called phase unwrapping(PU)operation.In highly sloped terrain,the interferometric phase gradients(IPG)of the adjacent pixels are more thanπ.Therefore,the traditional PU methods Interferometric Synthetic Aperture Radar (InSAR) has been proposed as a technique for the reconstruction of the Digital Elevation Model (DEM), which is widely used in global terrain mapping mission [1]. The DEM reconstruction methods of In SAR technique are usually based on the so-called phase unwrapping (PU) operation. highly sloped terrain, the interferometric phase gradients (IPG) of the adjacent pixels are more than π.Therefore, the traditional PU methods
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