Adjust the network shown below by the method of least squares. (10 pts.) Course

Question

Adjust the network shown below by the method of least squares. (10 pts.)

Course

Distance (m)

s

BC

1320.027

0.023

CD

1579.169

0.023

DA

1664.497

0.023

AC

2105.995

0.023

BD

2266.07

0.023

The coordinates (m) for control stations are:

A: x = 4356.78            y = 2340.97

B: x = 4359.83            y = 3981.00

a) What is the reference standard deviation, S0?

b) List the adjusted coordinates of the unknown stations and their standard deviations.

c) Tabulate the adjusted observations, their residuals and their standard deviations.

Course

Distance (m)

s

BC

1320.027

0.023

CD

1579.169

0.023

DA

1664.497

0.023

AC

2105.995

0.023

BD

2266.07

0.023

Explanation / Answer

The standard deviation which lies in the interval of a certain psychological range is known as reference standard deviation

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