On the Influence of Gross Errors of Known Points in GPS Network
Fang Xin-yu · Gnss World of China · 2007
The correct transform parameters of two coordinate systems cannot be obtained while known points contain gross errors.Unfortunately,how gross errors of known points destroy the reliability of transform parameters,i.e.,the mode and magnitude are not analyzed up to now.Further discussion of the influence of gross errors of known points is presented in this paper.The gross errors not only change the scale and the circumrotate parameters,but change the vector of two coordinate systems,the bigger the gross errors,the greater the magnitude,and the larger the control network,the greater the magnitude.If a big constant data is added to the coordinate of known point,the transform parameters will be changed greatly.A field example is used to validate the analysis in this contribution.