Which of the following statements regarding the Standards for Positional Accuracy of Global Positioning System (GPS) data is correct?
A)GPS surveys use different accuracy standards than traditional network and traverse surveys.
B)The U.S. government changed its methodology for reporting the accuracy of horizontal and vertical coordinate values because it was difficult to compare the accuracy of GPS and traditional surveys.
C)It is impossible to determine the accuracy of GPS data because of system complexity.
D)Only answers A and B

Question

Quizplus · Accepted Answer

GPS surveys use different accuracy standards than traditional network and traverse surveys, and because of this, the U.S. government had to change the way the accuracy of GPS horizontal and coordinate values is reported.
GPS surveys are less distance dependent than traditional surveys. As such, it was difficult to compare the accuracy of coordinate values obtained by different survey methods. The A least squares adjustment method is used to determine GPS accuracy because it distributes the error following laws of random probability and minimizes the sum of squared residuals. The method allows for the testing of complex networks.

Which of the Following Statements Regarding the Standards for Positional