Estimation of terrain elevation by multifrequency interferometric wide band SAR data

@article{Pascazio2001EstimationOT,
  title={Estimation of terrain elevation by multifrequency interferometric wide band SAR data},
  author={Vito Pascazio and Gilda Schirinzi},
  journal={IEEE Signal Processing Letters},
  year={2001},
  volume={8},
  pages={7-9}
}
We present a phase unwrapping method using a maximum likelihood estimation technique together with frequency diversity information to reconstruct highly discontinuous ground elevation profiles. Frequency diversity can be obtained by considering the interferograms obtained by different couples of subband images. 

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