STAR*NET V6 - Circe

Chapter 8 Analysis of Adjustment Output
8.12 Adjusted Bearings and Horizontal Distances (Optional)
This listing section shows the adjusted bearing (or azimuth) and horizontal distance
between each point which is connected by field observations. In addition, connected
stations specified in a “.RELATIVE” inline option are shown.
Adjusted Bearings (DMS) and Horizontal Distances (FeetUS)
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(Relative Confidence of Bearing is in Seconds)
From To Bearing Distance 95% RelConfidence
Brg Dist PPM
1 2 N01-23-51.01E 205.0388 13.22 0.0547 266.6328
2 3 N63-26-08.29W 134.1889 11.67 0.0553 412.2775
3 4 S31-25-40.66W 105.4493 13.92 0.0556 527.5248
3 7 N17-39-05.66W 115.4440 9.04 0.0534 462.6009
4 5 S68-11-49.87W 161.5606 14.77 0.0554 342.9421
5 6 S05-21-27.54E 160.7097 14.52 0.0457 284.1620
6 1 N81-36-22.22E 308.3068 13.03 0.0563 182.4629
Adjusted Bearing and Distances
The section also shows the relative error in azimuth and distance between the station
pairs. These relative errors are shown only if error propagation is performed. The relative
errors of the distance and azimuth for each course are based on the respective
components of its relative ellipse and are shown at the confidence level selected for the
adjustment. The distance precision shown as Parts per Million (PPM) is computed by
dividing the relative distance error by the length of the line then times 1,000,000.
8.13 Traverse Closures of Unadjusted Observations (Optional)
If you entered any of your observations using “Traverse” data, you can choose to include
a summary of the traverses, along with closure errors and precisions, and angular
misclosures. For each traverse, courses are listed with bearings (or azimuths) and
horizontal distances that are based on unadjusted input angle and distance entries. If the
traverse closes on itself or to another station in the network, the coordinate misclosure is
listed. If possible, an angular misclosure is also shown.
The bearings or azimuths created for the traverse closure printout are based on input
angles that have been “pre-corrected” for traverse angular misclosure when present. Each
angle is corrected by an equal amount, and then the linear closure is calculated. Many
governmental agencies want to see this kind of closure analysis. It is important to note,
however, that these corrections to angles are created only for the benefit of this traverse
closure printout. Actual corrections required for the angles are determined during the
rigorous least squares adjustment and are displayed as angle residuals!
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