이용 분야가 다양한 GPS(Global Positioning System) 신호는 지상에서의 수신 신호 세기가 매우 낮아 각종 전파교란 문제에 노출되어 있다. 최근 국내에서도 GPS 전파교란으로 인해 GPS 신호를 이용하는 이동통신 기지국, 항공기 및 선박 등의 분야에서 많은 피해 사례가 발생하였다. 이에 따라 GPS 전파교란에 대한 사회적 관심도가 높아지고 있고 보다 발전된 형태의 전파교란이 발생할 가능성도 높아지고 있다. 이와 같은 상황에서 본고에서는 GPS 전파교란 형태 중 항법수신기에서 잘못된 정보를 제공하게 하는 스마트 재밍에 대한 개념을 소개하고 이를 극복하기 위한 국내외 기술 동향에 대하여 기술하고자 한다.
KSP Keywords
Global positioning system(GPS)
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