運用e-GNSS結合多元圖資辦理圖解區土地複丈之研究：以桃園市桃園區、龜山區為例

Implementation of e-GNSS Technology and Multi-Map Data for Graphical Area of Land SurveyCorretion：Two Cases Study of Taoyuan District and Gueishan District

土地複丈業務為目前國內地政機關測量單位之主要業務，鑒於工商發展迅速蓬勃，土地價值高漲，相對的民眾對於土地複丈成果也要求更加準確。傳統作業辦理土地複丈，因圖根點分布情況、可靠界址點施測情形與套圖考量之差異等因素，而有不同之複丈成果，致衍生土地糾紛，嚴重影響政府公信力。內政部國土測繪中心因應潮流所需，研發提供e-GNSS（Electronic Global Navigation Satellite System）即時動態定位系統，其具備多目標、高效率、高產能之定位資訊蒐集能力，累積長期之測量成果並加以整合運用，避免測量錯誤情形發生，可減少傳統測量外業之複丈時間，有效提升測量成果品質。現行之測繪圖資有地形圖、正射影像圖、地籍數化圖、現況展點圖、都市計畫圖及通用版電子地圖等多元圖資可供地籍套繪使用。本研究以地形圖、正射影像圖、地籍數化圖、現況展點圖等多元測繪圖資加以統一整合於TWD97坐標系統架構下，不僅可輔助辦理土地複丈作業，整理後之相關圖資亦可提供其他機關業務上作參考使用。本研究係以e-GNSS方式辦理圖解區土地複丈作業，並用已完成數值地籍圖重測區當作測試驗證區，作為爾後在圖解區以e-GNSS方式辦理土地複丈之參考。於建立新的作業規範後，運用e-GNSS辦理加密圖根測量、現況測量及土地複丈等作業，經測量定位後之點位，運用6參數轉換和最小二乘配置法統一轉至TWD97坐標系統下，因無傳統加密圖根測量之累積誤差，研究證明新的作業規範不但能減少作業時間、提高工作效率，且均能符合規則之作業程序與相關之精度規範。 Land survey correction is the main duties of government of land affairs departments in Taiwan. Because of the rapidly of economy development and theraisely of land price, people require more accuracy surveying results. Due to distribution of control points, mistakes of reliable land boundary coordinates and analysis of overlap mapping , traditional procedures of land survey correction would make different results. It brings about lots of land disputation and decrease of government credibility. Therefore, NLSC(National Land Surveying and Mapping Center) provides e-GNSS technology that not only save time of surveying but avoid surveying mistakes, to upgrade the quality of surveying results. Existing graphic informations for survey works of topographic maps, orthophoto images maps, cadastral digital maps, base-status-point maps, city planning maps and electronic-global maps effectively supplied to cadastral survey of overlap mapping. Collecting with all graphic information, those data uniformly translated into the TWD97 coordinate system. It also assists works of land survey correction and the graphic information could be provided the good valuation reference. This study implement e-GNSS technology and multi-map data for graphical area of land survey correction, and selectcompleted resurvey area ofdigital cadastral map in the range as reference area. After established new SOP (Standard Operation Procedure), using high precision of e-GNSS technology and multi-map data to handle affairs of topographical densified control surveying, cadastral surveying and land survey correction. Because there is no accumulation residuals of traditional densified topographical control surveying, measured points can be translated into a TWD97 coordinate system by 6-parameter translations and least square collocation method. It is proved that not only reduce of the operating time but also improve of working efficiency, new SOP corresponds with the rules of operating procedures and the accuracies of related specifications.

Land survey correction is the main duties of government of land affairs departments in Taiwan. Because of the rapidly of economy development and theraisely of land price, people require more accuracy surveying results. Due to distribution of control points, mistakes of reliable land boundary coordinates and analysis of overlap mapping , traditional procedures of land survey correction would make different results. It brings about lots of land disputation and decrease of government credibility. Therefore, NLSC(National Land Surveying and Mapping Center) provides e-GNSS technology that not only save time of surveying but avoid surveying mistakes, to upgrade the quality of surveying results. Existing graphic informations for survey works of topographic maps, orthophoto images maps, cadastral digital maps, base-status-point maps, city planning maps and electronic-global maps effectively supplied to cadastral survey of overlap mapping. Collecting with all graphic information, those data uniformly translated into the TWD97 coordinate system. It also assists works of land survey correction and the graphic information could be provided the good valuation reference. This study implement e-GNSS technology and multi-map data for graphical area of land survey correction, and selectcompleted resurvey area ofdigital cadastral map in the range as reference area. After established new SOP (Standard Operation Procedure), using high precision of e-GNSS technology and multi-map data to handle affairs of topographical densified control surveying, cadastral surveying and land survey correction. Because there is no accumulation residuals of traditional densified topographical control surveying, measured points can be translated into a TWD97 coordinate system by 6-parameter translations and least square collocation method. It is proved that not only reduce of the operating time but also improve of working efficiency, new SOP corresponds with the rules of operating procedures and the accuracies of related specifications.