Fundamental study on multi-baseline SAR tomography using airborne X-band SAR

Recently, microwave remote sensing has been used for observation of the global environment extensively. There are many techniques in the microwave remote sensing. Among them, SAR (Synthetic Aperture Radar) Tomography is one of the emerging technique that can realize three dimensional imaging, by using multiple flight paths. The data pixels in each SAR image obtained at the slightly different paths may be regarded as the observed data with an array antenna. Thus, it is applying the Direction of Arrival (DOA) estimation technique to the array data, we estimate angle of dominant scatterers, or height of the targets. In this report, we provide preliminary results of the multi-baseline SAR Tomography observed by the PiSAR2-X, airborne X-band SAR of NICT, Japan.