Abstract
본 논문에서는 초저음파 신호를 이용하여 탄도미사일 발사위치를 추정하는 새로운 방법을 개발하였다. 양구와 철원에 설치된 기상청의 초저음파 관측망을 이용하여, 북한의 탄도미사일 발사시 발생한 초저음파 신호를 분석하였다. 신호의 탐지 및 발생위치 추정을 위하여 시간-주파수 분석, 도달 지연시간 측정 방법 및 구 삼각공식 등을 적용하였으며, 발사원점과 약 3 km 정도 차이가 나는 곳을 발사지점으로 추정하여 개발된 알고리즘의 정확도를 확인할 수 있었다. In this paper, we developed a new method estimating the location of ballistic missile launching using infrasound signals. Infrasound signal generated from the North Korea's ballistic missile launch was used as source data and its signal was recorded at KMA (Korea Meteorological Administration) infrasound stations located at Cheorwon and Yanggu. Time-frequency analysis, TDOA (Time Delay of Arrival) method and spherical trigonometry were applied for data processing of signal recorded and occurrence location detection. We could confirm the outstanding performance of the algorithm estimating source location which was only 3 km apart from the actual launching site.
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