Infrastructure monitoring by satellite based synthetic aperture radar (SAR) in JAXA
2023 Volume 4 Issue L1 Pages 3-8
Details
2023 Volume 4 Issue L1 Pages 3-8
JAXA has been developing infrastructure monitoring by satellite based synthetic aperture radar (SAR) using ALOS-2 satellite. By employing L-band SAR, high resolution measurement of 3m with measurement width of 50km is achieved. Since wave length of L-band is longer than that of X-band, L-band radar has higher transparency for cloud, rain or leaves. Relative displacement between satellite and surface are identified from phase lag between two observations. JAXA proposed screening method for ground inspection by automatic displacement variation detection using satellite SAR with measurement accuracy of mm order for 50km square area.
