Equivalent Propagation of GNSS Baseline Vector Covariance
and Position Covariance
1 Key Laboratory of Land Environment and Disaster Monitoring of NASMG, China University of Mining and Technology, 1 Daxue Road, Xuzhou 221116, China
2 Department of Architecture Engineering, Suqian College,399 South-Huanghe Road, Suqian 223800, China
3 College of Geomatics Engineering, Nanjing University of Technology,30 South-Puzhu, Nanjing 211800, China
Abstract In GNSS control network adjustment and position measure, It is necessary to propagate GNSS baseline vector covariance and position covariance between different coordinate system. The strict and simplified formula were derived to propagate GNSS baseline vector covariance from Gauss plane rectangular coordinate system to geodetic coordinate system, and from geodetic coordinate system to space rectangular coordinate system. The equivalent and unified propagation between GNSS baseline vector covariance and position covariance was studied. The theory analysis and test result show that the derived formula is correct, the position covariance propagation formula can replace the baseline vector covariance propagation formula, the above covariance propagation formula can be unified between space rectangular coordinate system and station rectangular coordinate system, and easy to form.
