Network adjustment workflow

by Micha ⌂, Bad Vilbel, (10 days ago) @ zxy55

Hello,

I have made measurments in local triangulation network. Horizontal angles and horizontal distances.

Did you really measure the azimuths with a total station? Normally, that’s not possible, and only (unoriented) directions are observed.

If i have 7 points, and lets say point 1 has known coordinates (0,0). Do I define that point as Datum point or Reference point, and the rest of the points as New points?

If you have only a single point, the necessary condition for the data definition is not satisfied. You need at least a second point or a true azimuth - see my question above. Assuming you have an azimuth, it doesn't matter whether the single known point is a reference point or a datum point.

How can I define Azimuth from point 1 to point 2 to be lets say (120°)?

Import the measurement as a set of directions and uncheck the checkbox to avoid estimating the unknown orientation of the set.

Is it possible to input Face 1, Face 2 measurments in several rounds to spot outliers? Or am i forced to use average observations option before computing approximate coordinates and running the adjustment?

JAG3D supports both faces. However, since the measurement of a single face is systematically distorted by measurement errors, it is strongly recommended that you use the average of the measurements from face 1 and face 2. To compute approximate coordinates it is nessessarry, that the first direction to a point relates always to face 1.

Is there and option to enter degree values in D-M-S format instead of decimal degrees?

No.

All the best
Micha

--
applied-geodesy.org - OpenSource Least-Squares Adjustment Software for Geodetic Sciences


Complete thread:

 RSS Feed of thread