1st February 2011, 08:39 PM
(This post was last modified: 1st February 2011, 11:20 PM by Stephen Jack.)
OK just want to make sure we on the same page. What GPS sytem do you use, and what is the accuracy?
The point I'm heading to is, if you use a handle held GPS system that has a 3 - 5m accuracy, that should be straight forward. Putting Total Station data or high accuracy GPS data into a GIS data base is a completely different ball game. Do you do this, if so do you classify the accuracy of the data. Point being locating a target below ground using handled data will be hit and miss. Trying to locate a target underground with data from a total station may be spot on or it could be in another country altogether. What are the checks and balances?
The point I'm heading to is, if you use a handle held GPS system that has a 3 - 5m accuracy, that should be straight forward. Putting Total Station data or high accuracy GPS data into a GIS data base is a completely different ball game. Do you do this, if so do you classify the accuracy of the data. Point being locating a target below ground using handled data will be hit and miss. Trying to locate a target underground with data from a total station may be spot on or it could be in another country altogether. What are the checks and balances?