Influence of stochastic model on adjustment results of GPS network
Yun Shi · Journal of Xi'an University of Science and Technology · 2006
This paper points out the meaning of posteriority estimation of stochastic model based on the observation data.It introduces some methods of posteriority estimation of stochastic model and the mathematical model of baseline network adjustment.At the same time it studies on the estimation methods by means of variance components estimation and non-negative estimation on the variance-covariance matrix of dissimilar time and different area so as to assess the quality of baseline observation.It also researches its influence on parameter estimation of variance components estimation.The example indicates whether the variance components estimation is right or not will affect the adjustment result of GPS network of 6 mm.So it has active significance in order to improve the adjustment results of GPS network if we can estimate the variance components reasonably and give it a right weight.