機載激光雷達在山區(qū)地形圖測繪中的應用研究
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摘 要:闡述機載激光雷達(LiDAR)的組成及誤差來源,通過廣西高速公路勘測中地形圖測繪案例實踐,介紹LiDAR測圖實施過程及關鍵方法,通過研究植被等因素對數(shù)字地面模型精度的影響規(guī)律分析,驗證LiDAR在大比例尺地形圖測制中的技術可行性。
關鍵詞:機載激光雷達;精度分析;植被覆蓋;大比例尺地形圖;測繪
中圖分類號:TN958 文獻標志碼:A 文章編號:2095-2945(2023)01-0026-04
Abstract: This paper describes the composition and error sources of airborne LiDAR. Through the practice of topographic map surveying and mapping in Guangxi highway survey, the implementation process and key methods of LiDAR survey are introduced. By studying the influence of vegetation and other factors on the accuracy of digital ground model, the technical feasibility of LiDAR in the measurement of large scale topographic maps is proposed.
Keywords: airborne LiDAR; accuracy analysis; vegetation coverage; large scale topographic map; mapping
我國公路建設飛速發(fā)展,公路的勘察與設計的任務逐年增加,而道路勘測周期短、地形復雜,勘測難度大;傳統(tǒng)測量技術手段在公路勘測中效率不高等問題日益凸顯;如何快速高效獲取高精度、海量信息的地形數(shù)據(jù)成為制約道路勘察設計亟需解決的問題,而機載激光雷達掃描測量技術的應用較好地解決了這一難題。(剩余5474字)