无人机航拍技术在养殖用海调查中的应用探析

Application of UAV aerial photography technology in the survey of aquaculture sea

无人机航拍技术具有灵活、高效、应用场景广泛等优点,在工程测量测绘中广泛应用。本文探析无人机在海洋测绘中的技术难点,通过无人机航拍在福建东山八尺门海域养殖用海测量的实际应用案例,采用依据海岸带实际地形情况布设像控点、实施分区块航测、立体数据采集等技术手段,准确高效地解决了八尺门海域养殖用海的调查问题。同时,通过抽样,对比了无人机和现场实地测量的结果,面积差值均在0.15%以内,平均差值为0.06%,表明无人机航拍技术可应用于近岸养殖用海调查。

UAV aerial photography technology is widely used in engineering surveying and mapping because of its advantages of flexibility,high efficiency and extensive application.In this paper,the technical difficulties of UAV in marine surveying were discussed,and a practical application case of UAV in marine surveying for aquaculture in Bachimen sea area of Dongshan County,Fujian Province was presented.Based on the actual topography of the coastal zone,the use of video control points,the implementation of sub-block aerial survey,three-dimensional data collection and other technical means,we offered the accurate and efficient solution to Bachimen sea area marine aquaculture survey problems.At the same time,the difference of area between UAV and field measurement was less than 0.15%,and the average difference was 0.06%.The results showed that the UAV aerial photography technology could be applied to the inshore mariculture survey.