Ocean Wave Inversion Using TerraSAR-X and TanDEM-X Images

Most real interferometric synthetic aperture radar (InSAR) systems are a combination of along and cross track configurations. For the hybrid interferometry, the synthetic aperture radar (SAR) images of TerraSAR-X and TanDEM-X are successfully used to retrieve the sea surface elevation (SSE) and the wavelength of dominant waves in this work. The significant wave height (SWH) of the retrieved ocean wave is 0.62m and the wavelength of dominant waves is 305m. The difference between the retrieved SWH and the SWH provided by European Centre for Medium-Range Weather Forecasts (ECMWF) is -0.09m, which is acceptable in the ocean wave inversion. Since the ECMWF does not directly provide the wavelength of the ocean waves, there is no available reference wavelength to compare with the wavelength of ocean waves retrieved in this paper.