International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2572

Full Length Research Paper

Three-dimensional visualisation of coastal geomorphology using fuzzy B-spline of dinsar technique

Maged Marghany
Institute of Geospatial Science and Technology (INSTEG), UniversitiTeknologi Malaysia 81310 UTM, Skudai, Johor Bahru, Malaysia.
Email: [email protected], [email protected].

  •  Accepted: 26 July 2011
  •  Published: 23 November 2011



This paper introduces a new approach for mapping coastal geomorphology by using differential synthetic aperture radar interferometry (DInSAR). Fuzzy B-spline is used to accelerate and improve the accuracy of 3-D map from DInSAR. The DInSAR algorithm involved two parts: 3-D map simulation and interferogram simulation with discrete element method (DEM) and satellite orbit parameters. 3-D coastal geomorphology reconstruction is realised by the fuzzy B-spline algorithm with the midpoint displacement method and the terrain roughness, and average slope are determined by two describing parameters of the model. Furthermore, fuzzy B-spline was used to eliminate topographic phase from the interferograms. Three RADARSAT-1 data sets of fine beam mode (F1) had been obtained between November 1999 and March 2004. The study shows incomplete fringe interferometry pattern because of decorrelation. Furthermore, fuzzy B-spline of DInSAR performs higher overall accuracy of 95% compared to DInSAR technique and ground data. Finally, prefect fringe pattern is clearly produced in ocean water body that refers to ocean water InSAR or liqui-InSAR. In conclusion, fuzzy B-spline of DInSAR provide accurate map of 3-D coastal geomorphology construction from historical RADARSAT-1 SAR fine mode data and can be also tool for liqui-InSAR.


Key words: RADARSAT-1 SAR, differential synthetic aperture radar interferometry (DInSAR), fuzzy B-spline, 3-D, coastal geomorphology.



ESRIN, European Space Research Institute; SNR, signal-to-noise ratio; TPDI, three passes differential interferometry; DInSAR, differential synthetic aperture radar; SAR, synthetic aperture radar.