地心地固坐標系Earth-Centered, Earth-Fixed,簡稱ECEF)簡稱地心坐標系,是一種以地心為原點的地固坐標系(也稱地球坐標系),也是屬於笛卡兒坐標系的一種。原點 O (0,0,0)為地球質心,z 軸與地軸平行指向北極點,x 軸指向本初子午線赤道的交點,y 軸垂直於xOz平面(即東經90度與赤道的交點)構成右手坐標系。

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地心地固坐標系。

參考文獻

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