TR2007-064

Highly Accurate DSM Reconstruction Using Ku-Band Airborne InSAR

    •  Okada, Y., Hirao, C., Horiuchi, T., Hara, Y., Yedidia, J.S., Azarbayejani, A., Oishi, N., "Highly Accurate DSM Reconstruction Using Ku-band Airborne InSAR", IEEE International Geoscience and Remote Sensing Symposium (IGARSS), July 2007, pp. 5049-5052.
      BibTeX TR2007-064 PDF
      • @inproceedings{Okada2007jul,
      • author = {Okada, Y. and Hirao, C. and Horiuchi, T. and Hara, Y. and Yedidia, J.S. and Azarbayejani, A. and Oishi, N.},
      • title = {Highly Accurate DSM Reconstruction Using Ku-band Airborne InSAR},
      • booktitle = {IEEE International Geoscience and Remote Sensing Symposium (IGARSS)},
      • year = 2007,
      • pages = {5049--5052},
      • month = jul,
      • isbn = {978-1-4244-1211-2},
      • url = {https://www.merl.com/publications/TR2007-064}
      • }
TR Image
Factor graph used in MERL's phase-unwrapping algorithm to define the probability of an unwrapped configuration of phases and integer shifts.
Abstract:

We present a newly developed airborne InSAR system incorporating a novel phase unwrapping algorithm, capable of retrieving a highly accurate Digital Surface Model (DSM). The SAR sensor system, with a spatial resolution of 30 cm, is carried on an airborne platform which has two antennas placed at a baseline length of 1 meter. We have established a DSM reconstruction processing technique, which includes the new "Iterated Conditional Modes-Minimum Cost Flow" (ICM-MCF) phase-unwrapping algorithm. The ICM-MCF algorithm finds a locally optimal configuration of unwrapped phases under a well-characterized statistical model of the terrain and noise. An experimental field observation was carried out in Tsukuba, Japan. The DSM was generated, and the height accuracy of the SAR-DSM was evaluated by comparing with laser pro-filer data. For 50 cm X 50 cm mesh an accuracy of better than 50 cm in height was confirmed.

 

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      Date: July 23, 2007
      Where: IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
      Brief
      • The paper "Highly Accurate DSM Reconstruction Using Ku-band Airborne InSAR" by Okada, Y., Hirao, C., Horiuchi, T., Hara, Y., Yedidia, J.S., Azarbayejani, A. and Oishi, N. was presented at the IEEE International Geoscience and Remote Sensing Symposium (IGARSS).
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