토공량 산정을 위한 소형무인항공시스템의 활용성 평가
Validation on the Utilization of Small-scale Unmanned Aerial Systems(sUAS) for Topographic Volume Calculations
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소형 무인항공시스템(무인항공기 플랫펌과 센서의 융합기술, 'sUAS')은 정확성, 경제성 및 운용 면의 무궁한 잠재성으로 여러 건설현장에서 새로운 응용이 창출되면서 활용이 점차 확산되고 있다. 본 연구의 목적은 소형 UAS에 의한 토공량 산정의 타당성을 검토하는 것이다. 이를 위해 시흥시 소재 배곧생명공원 내 위치한 대략 270m×300m×20m 규모의 원추형 성토부를 대상으로 소형무인항공기를 활용하여 영상을 취득한 후, UAS 영상해석을 통해 산출된 토공량을 GNSS Network-RTK 지상측량에 의한 토공량과 정량적으로 비교분석하였다. 연구결과, 무인항공시스템 자료와 GNSS Network RTK 자료에 의한 토공량의 편차가 2% 이하였고 특히, 작업의 편이성, 신속성 및 경제성 면에서 소형 UAS 영상기반 토공량 산정의 효용성을 입증할 수 있었다. 따라서, 식생높이의 산정방안이 보완된다면 중‧소규모 현장의 토공량 산정은 물론 3차원 지형공간정보 생성 분야에 무인항공영상의 응용이 유용할 것으로 기대된다.
Abstract
Small-scale UAS(Fusion technique of Unmanned Aerial Vehicles platform and Sensors, 'sUAS') opens various new applications in construction fields and so becoming progressively common due to the considerable potentials in terms of accuracy, costs and abilities. The purpose of this study is that the investigation of the validation on the utilization of sUAS for earth stockpile volume calculations on sites. For this, generate 3D models(DSM) with sUAS aerial images on an cone shaped soil stockpile approximately 270m×300m×20m, which located at Baegot Life Park in Siheung-si, compared stockpile volume estimates produced by sUAS image analysis, against volume estimates obtained by GNSS Network-RTK ground surveying method which selected as the criteria of earth stockpile volume. The result through comparison and examination show(demonstrate) that there was under 2% difference between the volume calculated with the GNSS Network RTK data and the sUAV data, especially sUAS imaged-based volume estimate of a stockpile can be greatly simplified, done quickly, and very cost effective over conventional terrestrial survey methods. Therefore, with consideration of various plan to assess the height of vegetation, sUAS image-based application expected very useful both volume estimate and 3D geospatial information extraction in small and medium-sized sites.
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