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  • Why should I care?

  • Who does it affect?  What kind of accuracy do you need?  

  • How do we update coordinates of areas with earthquakes?

  • Australia moves NE 7cm a year in continental drift. What happens to the coordinates of locations?

  • Why do we have to respect a reference system?

  • How different are the datums?

  • What coordinate system is google earth on?

  • How is MGA diff to AMG?  What is WGS and GDA?

  • I have a plan in AMG.  What do I do?  Can I use it? 

  • What is AHD?  What is elevation?

  • Why isn't there one standardised coordinate system Australia wide?

  • How do the coordinate systems account for ground movement?

  • What is a geodetic datum? 

  • How accurate is a gps device vertically and horizontally?

  • Does gps accuracy reduce when in a forest ie heavily treed?

  • The construction worker who built a building too high

  • The hiker off track

  • The GIS system muddle

  • The boatie who missed the fishing spot

  • The land surveyor 0.500m off elevation 

  • The assumptions of map reading and distortions

  • How did they update the coordinates of PMs from AGD to GDA?

  • How would coordinates on cadastral points work?

  • How do deformation models work?

  • Can you use RTK controllers on different reference systems to the base?

  • What is n value?

  • How to use a scale factor 1 on a construction site?

  • What is a quasigeoid?

  • What do I do if there are no AHD benchmarks in the area?

FAQ 

 

The hardest thing about learning geodesy is trying to use your imagination to work it all out.  Lets use some real world examples and look at some commonly asked questions to try and make sence of it all.

Visualise Geodesy
Visit  official Sites

 

Find links to official agencies on the wide myrid of topics that make up geodesy.  It's not just all about latitude and longitude.  Thre's centuries of development from the worlds of maths and science.

Useful Links

 

Some useful links for people trying to get their head around positioning, and how it all works.  

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This site has been compiled as part of a final year project towards the completion of a Bachelor of Spatial Science at QUT.  While I as the author am well read, I am by no means an expert and as such, information on this site should be checked for accuracy if cited.  

The information has not been checked by academics and is not regarded as  a fully polished final product yet.

 

If you have comments regarding corrections or further questions for the FAQ section please contact me via the contact form.

© 2015 by A. Adamson. Proudly created with Wix.com

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