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Elevation measurement using Synthetic Aperture Radar (SAR) is one of fundamental techniques in remote sensing. The cross-track Interferometric SAR (InSAR), which is the most popular technique of elevation measurement using SAR, uses the phase differences between the signals received by SAR antennas. Single-pass InSAR can be achieved by a single platform with two antennas. InSAR requires Ground Control...
Elevation measurement using Synthetic Aperture Radar (SAR) is one of crucial applications in remote sensing, since the use of SAR in elevation measurement makes it possible to measure a wide range of planar area. Most of conventional methods need Ground Control Points (GCPs) to achieve accurate 3D measurement, where GCP acquisition is a time-consuming and cost-intensive task. Addressing the above...
Elevation measurement using Synthetic Aperture Radar (SAR) is one of crucial applications in remote sensing, since the use of SAR in elevation measurement makes it possible to measure a wide range of planar area and not to set any monitoring device on the ground. Most of conventional methods need Ground Control Points (GCPs) to achieve accurate 3D measurement, where GCP acquisition is a time-consuming...
A heavy rainfall was observed by the NICT X-band airborne synthetic aperture radar (SAR), Pi-SAR2. In the Pi-SAR2 image there are features attributed to both backscattering from the rainfall and attenuation by the rainfall, as published for the TerraSAR-X (spaceborne X-band SAR) obaservation. Those features induced by the rainfall are evaluated with the Pi-SAR2 polarimetric image data. It is also...
A 9.0-magnitude earthquake occurred off the pacific coast of Tohoku area of Japan, in March 2011. Accompanied with the subsequent tsunami, it caused a lot of casualties and damages in the coast area. We conducted urgent observations of the damaged areas with an airborne X-band SAR system, Pi-SAR2, immediately after the earthquake, on March 12 and the following dates. The Pi-SAR2 is a fully polarimetric...
In the National Institute of Information and Communications Technology, Japan (NICT), we have developed an advanced X-band airborne synthetic aperture radar (SAR) system, Pi-SAR2, since 2006, to succeed the X-band polarimetirc and interferometric airborne SAR, Pi-SAR. The Pi-SAR2 has a higher spatial resolution of 0.3–0.6 m in the azimuth direction and 0.3–0.5 m in the range direction, as well as...
To analyze the coastal environment, the ocean surface wind field with high spatial resolution is one of important factors. The high spatial resolution of SAR agrees well to measure the wind field in coastal ocean. In this paper, the dependency of the normalized radar cross section in the X — and L-band on wind direction is analyzed under high and low wind speed conditions. As a result of this study,...
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