経けい緯い度ど原げん点てん

noun

geodetic datum origin; standard datum of geographic coordinates

Technical term in surveying and cartography; refers to the fixed reference point from which longitude and latitude are measured in a given geodetic system.

• 日本にほんの経けい緯い度ど原げん点てんは、東とう京きょう都と港みなと区くの日本にほん経けい緯い度ど原げん点てんにあります。

  Japan's geodetic datum origin is located at the Japanese Geodetic Datum Origin in Minato, Tokyo.

• 測そく量りょうでは、経けい緯い度ど原げん点てんを基き準じゅんにして座ざ標ひょうを計けい算さんします。

  In surveying, coordinates are calculated based on the geodetic datum origin.