頁籤選單縮合
題 名 | TWD67與TWD97大地基準轉換方法之研究=A Study of Methods for Geodetic Datum Transformation between TWD67 and TWD97 |
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作 者 | 楊名; 曾清涼; 史天元; 張順隆; | 書刊名 | 測量工程 |
卷 期 | 41:3 1999.09[民88.09] |
頁 次 | 頁27-49 |
分類號 | 440.98 |
關鍵詞 | 大地基準轉換; 最小二乘共置法; 最小曲率法; Geodetic datum transformation; Least-squares collocation; Minimum curvature method; |
語 文 | 中文(Chinese) |
中文摘要 | 大地基準轉換問題一直是大地測量領域中一項重要研究課題。本文在大地基準轉 換的方法上,除了使用一般三度空間坐標轉換之七參數相似轉換法以外,並另外提出了最小 二乘共置及最小曲率法兩種方法,以進一步提昇臺灣地區大地基準轉換的精度。 根據一等衛星控制點之成果分析,七參數相似轉換法由於模式中未考慮網形變形之影響,精 度最不理想。由於最小二乘共置法及最小曲率法的精度一致,本文建議臺灣地區基準轉換的 方式是使用最小曲率法來產生網格點曲面,供未知點直接轉換使用,若依此法進行轉換,不 僅擁有最佳之效率性,亦可使得共同點完全套合,而且可讓檢核點水平坐標殘差的均方根值 為最小。 |
英文摘要 | This paper deals with the problems of the geodetic datum transformation in Taiwan. The nature of datum transformation between a horizontal geodetic datum and a satellite-based three-dimensional one was first reviewed. Three different methods: the seven-parameter similarity transformation, the least-squares collocation, and the minimum curvature method were used in this study to evaluate the accuracy of datum transformation. The experiments based on the first order GPS control points indicate (1) that the seven-parameter transformation method has the lowest accuracy level, (2) that although with high accuracy, the least-squares collocation technique is only recommended for the purpose of outlier detection becausee of its relatively low efficiency, (3) that with its high accuracy and efficiency level, the minimum curvature method is considered the most effective approach to the problems of the geodetic datum transformation in Taiwan. |
本系統中英文摘要資訊取自各篇刊載內容。