###
Using old measurents or go and measure it again?

Following examples are calculated with BestNetwork.

**Task**
Calculate new coordinates for a boundary in a forest. It is not possible to use GNSS. The approach is to traverse with a total station. The yellow points are unknown. For these points new coordinates have to be calculated.
I have the choice of using old measurements or measure a new traverse. What is the difference in accuracy. What do I gain with new measurement? Here the picture of the two equipments. For both choice I set an accuracy of 10 mm for known points.

**Traverse with new total station 2016**
** **
Parameters:
- distance 2 mm + 2ppm
- direction 0.5mgon
- centring error 1mm

**Traverse with DK-RT 1930**
** **
Parameters:
- distance 10 mm + 100ppm
- direction 1.5mgon
- centring error 10mm** **

**Result Traverse with new Total Station**
**- 8 mm **

**Result Traverse with DK-RT 1930**
**- 24 mm **

**24 mm is not bad. Consequently I us old measurements instead of going out into the forest and measure the traverse again. What would you do? **
## Keine Kommentare:

## Kommentar posten