STAR*NET V6 - Circe

Chapter 5 Preparing Input Data
Sample Data Using Single Observation Data Types
The following example illustrates the use of some of the observation data types
discussed so far. The observations are for a simple 2D network using distances and
angles. The network has four stations. One of the stations is fixed, a bearing is fixed
between two of the points, and some of the observations have explicit standard error
values entered. Note that with the single station coordinates given, plus a fixed bearing
adjacent to that station, STAR*NET has enough information to automatically compute
approximate coordinates for the remaining stations. The order in which these lines of
data are entered makes no difference in the results of an adjustment.
# Fixed Coordinates
C 1 503991.197 495316.983 ! !
# Fixed Bearing
B 1-2 N45-00-00W !
# Angles
A 4-3-2 48-42-06
A 4-2-1 34-14-04
A 1-4-3 44-32-07
A 1-3-2 47-54-01
A 2-1-4 53-19-16 9.5
A 2-4-3 45-04-01 9.5
A 3-2-1 33-42-29
A 3-1-4 52-31-13
# Distances
D 1-4 542.891
D 1-3 678.944
D 2-4 676.289
D 2-3 509.180 0.035
D 4-3 479.810
D 2-1 380.931
3
34°
53°
479 .810
5 0 9 .18 0
Single Observation Data Types
58
49°
6 7 8 .9 4 4
6 7 6 .2 8 9
45°
4
34°
2
53°
N 4 5 - 0 0 - 0 0 W
380 .931
5 4 2 .8 9 1
48°
45°
1