지구과학 및 우주 탐사를 목적으로 지속적으로 발전해 온 라이다 센서 기술은 현재 항공기 및 위성에 탑재되어 정밀한 지구 지형 및 환경 관측을 위한 주요 수단으로 사용되고 있으며, 우주 정거장과 우주선의 도킹 시스템, 우주 탐사 로봇에 활용되고 있다. 지상에서는 원거리 거리 측정, 자동차 속도 위반 단속 등을 위한 간단한 형태의 라이다 센서를 비롯하여 최근에는 3차원 영상 복원을 위한 레이저 스캐너, 미래 무인자동차를 위한 3차원 영상 센서의 핵심 기술로 활용되면서 그 활용성과 중요성이 점차 증가되고 있다. 본고에서는 라이다 센서의 기본 원리 및 종류, 최근 영상 라이다 센서 기술동향, 응용 분야의 몇 가지 예를 요약하여 소개함으로써, 국내 기반 기술 및 상용화 개발이 취약한 라이다 센서에 대한 이해를 돕고자 한다.
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