Optimized Parameterization of VLBI Auxiliary Parameters in Least-Squares Adjustment: Preliminary Results

TANIR KAYIKÇI E., Heinkelmann R., Karbon M., Nilsson T., Raposo-Pulido V., Soja B., ...More

Scientific Assembly of the International-Association-of-Geodesy (IAG), Potsdam, Germany, 1 - 06 September 2013, vol.143, pp.125-131 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 143
  • Doi Number: 10.1007/1345_2015_80
  • City: Potsdam
  • Country: Germany
  • Page Numbers: pp.125-131
  • Karadeniz Technical University Affiliated: Yes


In a general parameter estimation model, a priori information is used to linearize the system of equations being solved so that just offsets to the a priori values need to be estimated. A priori information used in Very Long Baseline Interferometry (VLBI) data analysis is additionally needed for modeling and constraining the auxiliary parameters, i.e. zenith wet delays, clocks, and troposphere gradients, in order to stabilize the parameter estimation. In our study we investigate the modelling of the auxiliary parameters.