Observations consist of each of the measurements making up an observation. They are used to generate observation equations, which are processed by the least squares method in the traverse and grid compensation, the direct and indirect intersection, and the levelling options.
In essence, they all consist of an observed value, a calculated value and a residual amount left over from the difference between the two. They also include a standard deviation, or estimated error of these observations, calculated from the equipment’s accuracy factor set in the configuration. Consult to the Least Squares section for further details
The program handles four types of observations:
· Distance observations, containing the following information: origin and observed stations, observed distance, standard deviation and residual.
· Azimuth observations, containing the same information as distance observations, but also including a horizontal correction of its respective instrument set-up.
· Angle observations, arising from differences between two observations from consecutive stations.
· Vertical observations, indicating the difference between the observed vertical distance and the calculated vertical distance.
TcpMDT