参考基准面 meaning in Chinese

reference datum

Geoid is the reference datum of spatial data collection , so how to ascertain the geoid , that of all over the world , that of one nation , or that of one zone , is always an nuclear task of surveying science but there is not the quick and automatic solution . the density of the required data of astronomical measurement , gravimeter survey and geodesic survey is not satisfied
大地水准面是空间测量数据外业采集所依据的参考基准面。确定全球、一个国家、一个地区的大地水准面的形状始终是测绘科学的一项核心内容，一直未能有快速、简洁、自动的解决方法。需要的天文测量、重力测量、大地测量等数据的密度无法满足其需要。