Pradinių duomenų klaidų įtaka fototrianguliacijos tinklų parametrų tikslumui

Abstract

In the article, the influence of initial geodetic point coordinate errors on the accuracy of phototriangulation network parameters is considered. Analysis is made in case when the condition of collinearity for creation of networks is used. The coefficient matrix of correction equations system is divided into three blocks in such a way that one part of it with the initial data parameters is related. Calculation of correction equation systems is carried out by least squares. The influence of initial data errors on the accuracy of phototriangulation network parameters is expressed through the weight matrix. And the weight matrix is obtained by using the Frobenius formulae for calculating reciprocal matrix . Real accuracy of adjusted phototriangulation parameters is defined by the employed adjustment option. Computational results are presented and they show that ignoring initial geodetic point errors disturbs the appropriate phototriangulation network parameter estimation.