A kind of approximate method with an objective of making the sum of the angles about each station equal to 360 degrees.

A kind of approximate method with an objective of making the sum of the angles about each station equal to 360 degrees.

• A. station adjustment
• B. Angle balancing
• C. Least squares
• D. Polygon closure

Answer: (A)

The key idea is enforcing angular consistency at a station: the angles formed by the incident and outgoing lines around that point should sum to 360 degrees. In practice, if the measured angles show a misclosure, you can treat the station coordinates themselves as unknowns and adjust them so that the geometry around each station closes. This “station adjustment” shifts the directions of the lines slightly, which changes the angles and pushes their total toward 360 degrees, distributing the misclosure through the network in a way that respects the overall shape of the survey net. It’s more targeted to the angular closure problem than a general least-squares fit or a polygon-closure approach, and it directly addresses correcting the angular balance by altering where the stations are located.

The key idea is enforcing angular consistency at a station: the angles formed by the incident and outgoing lines around that point should sum to 360 degrees. In practice, if the measured angles show a misclosure, you can treat the station coordinates themselves as unknowns and adjust them so that the geometry around each station closes. This “station adjustment” shifts the directions of the lines slightly, which changes the angles and pushes their total toward 360 degrees, distributing the misclosure through the network in a way that respects the overall shape of the survey net. It’s more targeted to the angular closure problem than a general least-squares fit or a polygon-closure approach, and it directly addresses correcting the angular balance by altering where the stations are located.