檢視国家高程基准的原始碼

[[File:国家高程基准.jpg|缩略图|[https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E5%9B%BD%E5%AE%B6%E9%AB%98%E7%A8%8B%E5%9F%BA%E5%87%86&step_word=&hs=0&pn=4&spn=0&di=36850&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=480114693%2C3894913843&os=838628705%2C999704235&simid=4191314949%2C738711149&adpicid=0&lpn=0&ln=745&fr=&fmq=1620118466055_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined&copyright=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%3A%2F%2Fgss0.baidu.com%2F94o3dSag_xI4khGko9WTAnF6hhy%2Fzhidao%2Fpic%2Fitem%2Ff636afc379310a55dbff6e62ba4543a983261048.jpg%26refer%3Dhttp%3A%2F%2Fgss0.baidu.com%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Djpeg%3Fsec%3D1622710472%26t%3Ddb3e6683f737207aae04c55f55fb834a&fromurl=ippr_z2C%24qAzdH3FAzdH3Fzit1w5_z%26e3Bkwt17_z%26e3Bv54AzdH3Fq7jfpt5gAzdH3F9and8cn9n_z%26e3Bip4s&gsm=2&rpstart=0&rpnum=0&islist=&querylist=&force=undefined 原图链接][https://zhidao.baidu.com/question/403215343.html 来自百度知道]]]
'''国家高程基准'''
布测全国统一的高程控制网，首先必须建立一个统一的高程基准面，所有水准测量测定的高程都以这个面为零起算，也就是以高程基准面作为[[零高程面]]。
用精密水准测量联测到陆地上预先设置好的一个固定点，定出这个点的高程作为全国水准测量的起算高程，这个固定点称为[[水准原点]]。