城市CORS站转换到CGCS2000的技术研究

The Research of City CORS Conversion to CGCS2000

随着CGCS2000国家大地坐标系的推广应用,城市CORS系统在基于现有框架和历元向CGCS2000转换问题具有现实意义。目前很多转换方法都需要联测已有的CGCS2000坐标起算点,如果缺少起算点,则很难解决。本文提出了通过联测已有IGS站,测定CORS站速度场,基于特定历元下不同框架间已知的转换系数,实现CORS站与CGCS2000坐标转换关系建立。本文基于GZCORS实例,进行验证,讨论了技术可行性。

With the popularization and application of CGCS2000 national geodetic coordinate system, it has practical significance to solve the conversion of city CORS to CGCS2000 in the existing framework. The existing conversion meth- ods requires the joint coordinates of CGCS2000 starting point. If lack of starting point, the problem is difficult to solve. It presents a joint measurement existing IGS stations to the determination of the velocity field of the CORS stations to deter- mine the CORS site speed field in this paper. Conversion factor based on particular epoch different framework known CORS station the existing coordinates transferred CGCS2000. Based on GZCORS instance, discusses how to transform ur- ban CORS to CGCS2000.