科技時代來臨後，水面載具持續發展，亦助於近岸環境即時監測、打撈搜尋作業及海洋災害預警等民生用途，軍事作業領域，包含鄰國情報偵察、近海偵巡、反水雷作戰等相關軍事領域運用。本研究使用雙體船搭載單波束聲納系統，應用田口直交表及變異數分析等方法，探討各影響因子對水中辨識能力之差異分析，有助於提升無人載具之水中辨識能力，在本實驗設計下，得出最佳顯示成像構型配置為A₁B₃(低船速及聲納擺放位置距水面較近)，期望能藉以提升水中辨識之效能。

Following with the age of technology, many advanced continuous developing the multi-functional small sur-face boats, and applied to the real-time monitoring of the near-shore environment, salvage and search operations, and marine disaster early warning and other livelihood purposes. The field of military operations includes intelligence reconnaissance, offshore reconnaissance and patrol, protecting the fishing vessels, and anti-terrorism tasks, anti-mine warfare and target ships for shooting training and other related military fields. In this study, the unmanned surface vehicle is the catamaran that equipped with single-beam sonar system, and used the Taguchi experimental design method, analysis of variance to discuss the effect of each controllable factor on the identification ability under water. The difference analysis is helpful to improve the underwater identification ability of unmanned surface vehicles. In addition, based on this study results, the best factor-level combination is A₁B₃ (such as low ship’s speed and located the sonar device near free-surface). To achieve the robust design, the dynamic navigation time of un-manned surface vehicles and enhance the underwater identification performance, it can provide reference for other units.