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數化圖解地籍圖坐標整合之初步研究-以高雄市中都三小段為例

A Study of Integration of Digitized Cadastral Map Coordinations-A Case Study of Jhongdu 3 Subsection in Kaohsiung City

摘要


將各種坐標整合之TWD97坐標系統,以符合國家新測量基準,目前國內已有各項研究,但在轉換共同點的選取上,則大都採用圖根點或經測量可靠界址點交會計算所得之輔助點,並未分析控制點於圖上精度,且建置的方式也僅針對小範圍考慮。 本文提出以後方交會法方式,測量可靠界址點、現況點,反求圖上測站坐標作為轉換共同點,並賦予反求坐標中誤差值,以約制反求圖上位置精度,經共同點間邊、角關係分析後,確定轉換共同點於圖上絕對位置,據以決定轉換區域大小,並可同時找出原圖謬誤予以列管,而實驗的方法,除以反求圖上位置之測站作為轉換共同點外,並加入街廓點,分別進行轉換結果比較,藉以建置一使圖解地籍圖更符合現況的坐標轉換模式。 轉換後的圖籍與檢核後現況街廓套疊比較,經數據顯示,以本研究的方法進行轉換,以街廓點作為轉換共同點產生之地籍圖較接近現況,除可將圖籍轉換為TWD97坐標系統,整合不同坐標系統外,並可得大範圍的圖解法土地複丈圖,供實地辦理複丈,而原圖解法成圖的圖籍經坐標轉換後,仍僅能維持原圖解法成圖的精度。

並列摘要


Nowadays, there are many researches to combine all kinds of coordination by TWD97 coordination system to conform to the new measure standard of Nation in domestic researches. But the selection on the common points of transformation mostly took the base points of map or to measure the reliable points on map then to find the auxiliary points after counting really not to analyze the precision of control points on the map and also the consideration of set method only aimed at the small range. This research provides the Digitized cadastral Method of Resection to measure the reliable points on map, in order to find the coordinates of measure station as the common points of transformation. and in field by the method of resection And we restricted the precision in root mean square error by analyze the relationship between the edges and points of those new base point. In this way we also find out the error source of original cadastral and then decided the size of research region. By the research, except the location of map as the common points of transformation, we also add the street corner points to compare the result of transformation separately, in order to set up the cadastral map of illustration more conform to the present coordinate transformation system. After the cadastral map transformed compare with the present street outline, the figures showed the fittest map with the field survey was the street corners transformed map. Except transforming cadastral to TWD97 coordination, the research method could union different kinds of coordination and could supply the large range cadastral map for field survey, which is different from the original transformed map which only maintains the precision of itself.

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