Signal analysis on synthetic aperture radar for velocity vector measurement and applicability evaluation to ocean current measurement

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K14961
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 24020:Marine engineering-related
• Research Institution: Tokyo University of Marine Science and Technology (2021-2022); The University of Tokyo (2020)
• Principal Investigator: Yoshida Takero 東京海洋大学, 学術研究院, 准教授 (30771505)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 合成開口レーダ / 海洋 / 船舶 / 河川

Outline of Final Research Achievements

In the observation of velocity vectors of moving objects using synthetic aperture radar, a method called multi-look processing was applied to estimate two directional velocity components. In this study, numerical simulation and image analysis of synthetic aperture radar images were used to verify the applicability of the method for velocity vector estimation in actual marine and aquatic environments. Specifically, the method was evaluated for surface current in rivers and coastal areas. In addition, a method for estimating the velocity vector of cruising ships using synthetic aperture radar images in Spotlight mode was verified, and detection of moving ships was also studied as a preprocessing.

Free Research Field

海洋情報解析

Academic Significance and Societal Importance of the Research Achievements

合成開口レーダによる計測方法の新たな提案を行い、その手法の評価や制限などを検証した。船舶についての移動情報を取得することは、船舶自動識別装置を搭載していない船の情報を得ることにつながる。また、海域や水域において流れの計測に対しては、海域や水域におけるデータを取得する際の手法として、適用性に制約はあるものの今後発展する可能性があるといえる。