檢視椭球体的原始碼

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|<center><img src=https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fgss0.baidu.com%2F9vo3dSag_xI4khGko9WTAnF6hhy%2Fzhidao%2Fwh%253D450%252C600%2Fsign%3D5bb764c916dfa9ecfd7b5e1357e0db35%2F962bd40735fae6cdd2edadb408b30f2443a70f8d.jpg&refer=http%3A%2F%2Fgss0.baidu.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1663367776&t=0f9c6a58e3385f947941fd1a61dbaa25 width="300"></center>
<small>[https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E6%A4%AD%E7%90%83%E4%BD%93&step_word=&hs=0&pn=11&spn=0&di=7117150749552803841&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=2&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=-1&cs=625454096%2C775171363&os=1021401193%2C2271615733&simid=3423731331%2C287914491&adpicid=0&lpn=0&ln=1319&fr=&fmq=1660775796019_R&fm=result&ic=&s=undefined&hd=&latest=&copyright=&se=&sme=&tab=0&width=&height=&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%3A%2F%2Fgss0.baidu.com%2F9vo3dSag_xI4khGko9WTAnF6hhy%2Fzhidao%2Fwh%253D450%252C600%2Fsign%3D5bb764c916dfa9ecfd7b5e1357e0db35%2F962bd40735fae6cdd2edadb408b30f2443a70f8d.jpg%26refer%3Dhttp%3A%2F%2Fgss0.baidu.com%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Dauto%3Fsec%3D1663367776%26t%3D0f9c6a58e3385f947941fd1a61dbaa25&fromurl=ippr_z2C%24qAzdH3FAzdH3Fzit1w5_z%26e3Bkwt17_z%26e3Bv54AzdH3Fq7jfpt5gAzdH3F9dba9n9llbba8a0mld_z%26e3Bip4s&gsm=d&rpstart=0&rpnum=0&islist=&querylist=&nojc=undefined&dyTabStr=MCwzLDIsMSw0LDYsNSw4LDcsOQ%3D%3D 来自 呢图网 的图片]</small>
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名 称；椭球体

性 质；规则的数学表面

通常称为；地球椭球体

视其为；地球体的数学表面
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众所周知我们的地球表面是一个凸凹不平的[[表面]]，而对于地球测量而言，地表是一个无法用数学公式表达的曲面，这样的曲面不能作为测量和制图的基准面。假想一个扁率极小的椭圆，绕大地球体短轴旋转所形成的规则'''椭球体'''称之为地球椭球体，此椭球体近似于大地水准面。地球椭球体表面是一个规则的[[数学]]表面，可以用数学公式表达，所以在测量和制图中就用它替代地球的自然表面。因此就有了地球椭球体的概念。一般在制图或[[测量]]中就用旋转椭球来代替大地球体，这个旋转球体通常称为地球椭球体，简称椭球体。<ref>[https://wenku.so.com/d/c082815e0e6769525ad2541faa1522e2 常见的椭球体参数值], 360文库 , 2021年4月2日</ref>