| 講演抄録/キーワード |
| 講演名 |
2017-05-30 11:15
舗装体表面変位の干渉レーダによるモニタリング ○鄒 立龍・佐藤源之(東北大) ICTSSL2017-10 |
| 抄録 |
(和) |
本報告ではレーダを利用した舗装道路の健全性評価手法を提案する.まず実開口レーダ(RAR)に干渉処理を施し一般道路の表面の微少な振動を計測できることを示した.レーダは通行する車両と舗装体の表面を同時に計測するが,ラドン変換を利用した信号処理により車両からの反射波を除去し舗装体表面の振動を計測できることを示した.次に合成開口レーダを利用した干渉処理の例を示す.羽田空港において行った計測において,ターミナルビルの表面の振動を0.18mmの精度で計測できることを示した.この手法を舗装体表面計測に利用し,損傷箇所の検知ができる可能性を示した. |
| (英) |
Road pavement can be damaged by repeated traffic and environmental loading. In this report, we present an advanced technique which uses radar interferometry which computes the differential phase changes radar echoes to monitoring the deformation of the pavement surface. We describe a method using real aperture radar (RAR) to monitor the pavement of normal road. From the radar profile, we could easily distinguish the moving car. In addition, using the Radon transform and interferometry technique, the deformation of the road surface after heavy truck could be observed. Then, we will discuss using ground based synthetic aperture radar (GB-SAR) for an airport taxiway monitoring. The GB-SAR interferometry technique could monitor very precise and small displacement of the targets with 0.18mm accuracy. The proposed approach has been applied to monitoring a taxiway in Haneda Airport. Based on this technique, we could clearly observe the movement of the building that generated by the heat-expansion and cold-contraction. The results provided by this technique also clearly showed that the taxiway will be deformed after an airplanes are passed. Moreover, we could observed the long time vibration of the taxiway surface. Compared with the deformation from the defects or anomalies area and sounding area, we could conclude that the deformation from the anomalous area is much unstable and random. |
| キーワード |
(和) |
非破壊検査 / 実開口レーダ / 地表設置型合成開口レーダ / GB-SAR / 干渉レーダ / 舗装面変位 / ラドン変換 / SIP |
| (英) |
nondestructive inspection / real aperture radar / GB-SAR / interferometry / pavement deformation / Radon transform / SIP / |
| 文献情報 |
信学技報, vol. 117, no. 67, ICTSSL2017-10, pp. 45-50, 2017年5月. |
| 資料番号 |
ICTSSL2017-10 |
| 発行日 |
2017-05-22 (ICTSSL) |
| ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
| PDFダウンロード |
ICTSSL2017-10 |