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Spaceborne radar interferometry for coastal DEM construction

By:
, , , , and
DOI: 10.1109/IGARSS.2005.1526748

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Abstract

Topographic features in coastal regions including tidal flats change more significantly than landmass, and are characterized by extremely low slopes. High precision DEMs are required to monitor dynamic changes in coastal topography. It is difficult to obtain coherent interferometric SAR pairs especially over tidal flats mainly because of variation of tidal conditions. Here we focus on i) coherence of multi-pass ERS SAR interferometric pairs and ii) DEM construction from ERS-ENVISAT pairs. Coherences of multi-pass ERS interferograms were good enough to construct DEM under favorable tidal conditions. Coherence in sand dominant area was generally higher than that in muddy surface. The coarse grained coastal areas are favorable for multi-pass interferometry. Utilization of ERS-ENVISAT interferometric pairs is taken a growing interest. We carried out investigation using a cross-interferometric pair with a normal baseline of about 1.3 km, a 30 minutes temporal separation and the height sensitivity of about 6 meters. Preliminary results of ERS-ENVISAT interferometry were not successful due to baseline and unfavorable scattering conditions. ?? 2005 IEEE.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Spaceborne radar interferometry for coastal DEM construction
ISBN:
0780390504; 9780780390508
DOI:
10.1109/IGARSS.2005.1526748
Volume
7
Year Published:
2005
Language:
English
Larger Work Title:
International Geoscience and Remote Sensing Symposium (IGARSS)
First page:
4806
Last page:
4808
Conference Title:
2005 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2005
Conference Location:
Seoul
Conference Date:
25 July 2005 through 29 July 2005