On some technical problems in the data processing of Tianjin high-precision GPS ground subsidence network
Ding Ji-xin · Shuiwen dizhi gongcheng dizhi · 2005
Some technical problems in the data processing of Tianjin high-precision GPS ground subsidence monitoring network are discussed taking a GPS ground subsidence network in Tianjin as an example in this paper. Studies show that GPS data processing software, GPS monitoring network frame, atmospheric delay adjustment and gross errors will bring great influence on the precision of data processing results. When implementing the GPS data post-processing, only various error sources affecting the calculating results are effectively adjusted, the elevation precision is possibly able to reach millimeter order and the requirement of monitoring the ground subsidence is able to be satisfied.