2000国家大地坐标系椭球参数与GRS80和WGS.pdf

第 38 卷 　第 3 期 测 　绘 　学 　报 Vol . 38 , No . 3 　2009 年 6 月 Act a Geo d a etic a et Cart o gr ap hic a Sinic a J un . ,2009 　　 文章编号 :100 11595 (2009) 030 18906 2000 国家大地坐标系椭球参数与 GRS 80 和 W GS 84 的比较 程鹏飞 , 文汉江 , 成英燕 , 王 　华 中国测绘科学研究院 ,北京 100039 Pa r a met er s of t he C GCS 2000 Ellip soi d a n d Co mp a ri so n s wit h GRS 80 a n d W GS 84 CHEN G Pen gf ei , WEN Ha nj i a n g , CHEN G Yin gy a n , WAN G Hu a Chine se Ac a demy of Surveyin g a n d Mapping , Beij in g 100039 ,Chin a Ab str a ct :Ac cor ding to the definitio n of Chin a Geo detic Coor din a t e Sy st em 2000 (C GCS 2000) a n d define d co n st a nt s of the ellip soi d a dop t e d by C GCS 2000 , the ot her geometric al a n d p hy sic al p a r a met er s of thi s ellip soi d a re derive d a n d comp a re d with t h a t from GRS 80 a n d W GS 84 , re sp e ctively . Me a nwhile the coor din a t e s a n d norm al gr a vit y o n the C GCS 2000 ellip soi d a re comp a re d with th a t o n WGS 84 a n d GRS 80 . The diff erenc e b etw e en the norm al gr a vit y o n C GCS 2000 ellip soi d a n d th a t o n GRS 80 i s a bout - 143 . 54 ×10 - 8 m/ s2 ,while it i s 0 . 02 ×10 - 8 m/ s2 comp a re d to WGS 84 . The lo ngit u de s of a point o n the se thre e ellip soi d s a re t he sa me , but the m a ximum diff erenc e of l a tit u de b etw e en C GCS 2000 a n d GRS 80 i s 8 . 26 ×10 - 11 a rc se co n d s , which i s a bout 2 . 5 ×10 - 6 mm , a n d the m a ximum diff er enc e of l a tit u de b etw e en C GCS 2000 a n d WGS 84 i s 3 . 6 ×10 - 6 a rc se co n d s , which i s a bout 0 . 11 mm . Key wor d s :geo detic coor din a t e sy st em ; geo c entric coor din a t e sy st em ; C GCS 2000 ; W GS 84 ; GRS 80 ( ) 摘 　要 :根据 2000 国家大地坐标系 C GCS 2