This document specifies the layout principles,absolute gravity measurement,relative gravity measurement,determination of horizontal coordinate and height,data processing,inspection and acceptance of products,etc.,for the establishment of the gravity control network(point)throughout the country.
This document is applicable to construction of the national gravity control network,the survey of datum point,basic point,first order point,and corresponding derived gravity point.
定价: 1236元 / 折扣价: 1051 元 加购物车
This document specifies the basic technical indicators and technical requirements for the establishment and maintenance of the geodetic control network,the vertical control network and the gravity control network,the quasi-geoid determination,so as to realize the nationwide unified geodetic datum,vertical datum and corresponding sounding datum and gravity datum.
This document is applicable to geodetic surveying activities in the territory of the People’s Republic of China and other sea areas under its jurisdiction.
定价: 456元 / 折扣价: 388 元 加购物车