… The Earth is close to a spheroid, but when the area of the survey is small, the Earth's surface can be treated as a flat surface. This type of survey is called a plane survey, and when the Earth's surface is treated as a surface taking into account curvature, it is called a geodetic survey. The former is sometimes called a small-scale survey, and the latter a large-scale survey. … *Some of the terminology that refers to "plane survey" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… 地球は回転楕円体に近いものであるが,測量の範囲が狭い場合には地表を平面として取り扱うことができる。このような測量を平面測量plane surveyといい,地表を曲率を考えた面として取り扱うものを測地測量geodetic surveyという。前者を小地測量,後者を大地測量ということもある。… ※「plane survey」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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