다이나믹 토픽 모델링을 활용한 해양 무인 체계의 기술 동향 분석 : 특허분석을 중심으로

The technological development of the 4th Industrial Revolution had a great impact on the defense sector. Marine unmanned systems have attracted attention as a new means of battle in preparation for the future war that has changed with an expanded combat area and a weapon system using advanced technology. Accordingly, countries around the world are actively conducting research related to marine unmanned systems, but the level of development of marine unmanned systems in Korea is insufficient compared to advanced military countries. Therefore, this study aims to identify major technologies and trends by conducting dynamic topic modeling based on the patent data of domestic marine unmanned systems. To this end, major topics were derived through the process of collecting and preprocessing patent data related to marine unmanned systems for a total of 11 years from 2010 to 2021, and changes in topics by year and representative keywords by topic were examined. As a result of the analysis, eight topics and the top 20 keywords for each topic were extracted. As a result of the analysis of this study, the main topics were selected as 'marine environment monitoring', 'autonomous operation', 'communication control', 'detection', 'energy management', 'data processing', 'sensor', and 'ship technology'. Autonomous operation, energy management, sensors, and ship technology are classified as key topics, and related technologies are expected to be actively developed in the future. The results of this study are expected to be used as basic data for the development of marine unmanned systems in the future by extracting major technologies of domestic marine unmanned systems and identifying trends.