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研究題目
レーダ技術による世界遺産の保護

研究内容
 Sato Lab. have conducted a lot of cooperative archeological survey in different countries round the world. My research role in Sato lab is evolving new technologies that contribute in the nondestructive archeological survey in japan and around the world.
  These days, many historical places around the world, particularly in Egypt suffer from cracks due to many environmental problems like dry conditions, changing ground water level, and temperature changes. Therefore, the danger of collapse has been pointed out for many important heritage places. From the standpoint of protecting world heritage sites, monitoring the surface of these sites and giving alarm when displacement happen should contribute in taking prompt actions to prevent collapse. Therefore, Development of a devices that contribute in this issue is highly demanded. Our collaborative research group is leading this field in Japan and installed GBInSAR land slide monitoring technology in many place such as Minami Aso and Aratozawa.
  MIMO radars type GBInSAR is a new developed system which introduces many advantages over the conventional GB-SAR system like fast data acquisition, low weight, and high stability. In Japan, our research team has developed 17GHz single polarization MIMO radar type GBInSAR based on printed linear antenna array. Despite the full polarimetric GBInSAR can provide more information of the geophysical condition of the ground surface even in a severe condition, all the reported MIMO radar systems provide only single polarization. The reason is the challenge of designing cross polarization linear antenna array with high polarization purity. Accordingly, developing full-polarimetric MIMO radars type GBInSAR (objective of this proposal) should give a substantial impact in disaster prevention and consequently archeological sites preservation in harsh environmental conditions for domestic and overseas sectors.
  The goal of this cooperative research work is developing new full polarimetric MIMO radar type GBInSAR system with imaging range of 1km for world cultural heritage preservation. As a preparation step, our laboratory has already developed single polarization MIMO radar type GBInSAR system. Accordingly, the full polarimetric property is targeted by introducing new 17GHz planar cross-polarized linear antenna array with high inter-element isolation to replace the single polarization antenna. The potential system is planned to consists of 16 transmit and 16 receive cross polarized antennas working at 17 GHz, arranged in order to synthesize an equally spaced virtual array of 256 elements.
  This system is planned to be applied for real time monitoring of archeological sites in Egypt. Prof. Motoyuki Sato will help and support in the feasibility of installing the potential system in Hatshepsut Funeral Hall which shown in Fig.1, as a one of most important historical Egyptian place exposes to the risk of collapse of surrounding rocks.

研究期間
2020年度~2020年度

研究組織
氏名 所属
Anwer Sayed Abdelhameed Ahmed 東北アジア研究センター
佐藤 源之 東北アジア研究センター
吉村 作治 東日本国際大学学長
山下 弘訓 東日本国際大学エジプト考古学研究所


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 東北大学
 東北アジア研究センター

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