成果報告書詳細
管理番号20160000000480
タイトル*平成27年度中間年報 SIP(戦略的イノベーション創造プログラム)/インフラ維持管理・更新・マネジメント技術 モニタリングシステムの現場実証 衛星及びソナーを利用した港湾施設のモニタリングシステムの構築の研究開発
公開日2016/12/20
報告書年度2015 - 2015
委託先名五洋建設株式会社 国立研究開発法人宇宙航空研究開発機構
プロジェクト番号P14031
部署名ロボット・AI部
和文要約
英文要約Title : Development of the Monitoring System for Port Facilities using Satellite and SONAR (FY2014-FY2016) FY2015 Annual Report

(1) Enforcement item 1
In this project, we aim to develop an advanced monitoring system based on remote sensing technology for port facilities.
In order for an accurate emergency monitoring of port facilities, we developed a rapid analysis system for the disaster monitoring based on the combination of interferometric coherence and amplitude information. Using the Advanced Land Observing Satellite (ALOS) / Phased Array type L-band Synthetic Aperture Radar (PALSAR) datasets which observed Ishinomaki port and Onahama port damaged by the 2011 off the Pacific coast of Tohoku Earthquake, we confirm the effectiveness of the proposed system. We also assessed the accuracy of the Differential SAR interferometry (DInSAR) for the PALSAR-2 datasets using a harbor model. We measured the uplift of a working model made of concrete armor units and confirmed its accuracy can be better than 2 cm in standard deviation.
Additionally applicability of the time-series differential interferometry technique for the monitoring system is evaluated on Kansai International Airport, which had been also evaluated on our report in FY2014, and we found that the measurement with the technique has an accuracy of 11.5mm with RMSE (Root Mean Square Error). It is demonstrated that the technique enables to observe deformation not only spatially but also as precisely as ground measurements do. In other case, Onahama port, our field survey showed that pavements along an irrigation canal had subsided and their wall had leaned around the site where the technique indicated long term deformation. We concluded that an efficient monitoring system would be realized throughout discussion of installing these SAR analysis technique with several additional verifications in the next year.

(2) Enforcement item 2
In dredging site, we tried to get the raw data measuring bottom topography, using SONAR. However, we were faced with a problem caused by communication error between SONAR and PC. After that, we tried it again in the air, and the communication error was resolved.
25 Tetrapod of 2t class and two corner-reflectors were put on the base, the height of which can be changed. We changed the height of tetrapod and one corner-reflector (another reflector’s height was fixed). In this year, 12 times observations using satellite (ALOS-2) were conducted, and we increased the height by 2.0cm 2 times in the observations, respectively.
Following survey data of vertical displacement was collected.
・revetment in Onahama port
・ground in Kansai International Airport
・breakwater in Kashima port
・tetrapod in Koubesuma-Nagata port
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