Stanley, Matthew (2010) An investigation into the Australian height datum on Ballina Island. [USQ Project]
[Abstract]: Australian Height Datum (AHD) is the national height datum used in Australia, and is realised with the use of permanent survey marks, that have been connected
to the AHD network by the NSW state government. This report investigated the AHD on Ballina Island on the North Coast of NSW by analysing the permanent survey mark infrastructure that supports it.
Through the use of survey techniques such as Precise Differential Levelling, Rapid Static GNSS, and Reciprocal EDM Height Traversing, the inter-relationship (order) of a sample of the permanent survey marks in the subject area were able to be investigated, and compared with the AHD value stated for the recently installed Ballina CORS, and the value of MSL determined at the Ballina tide gauge over the last 24 years.
From the results of the varied surveys it has been concluded that the majority of the permanent survey mark network only fits a 3rd order relationship or less, and that
the inter-relationship between the permanent survey mark infrastructure, and the recently installed CORS lays between 4th to 5th order. Furthermore, the relationship
between the AHD in Ballina, and the value of MSL was derived, and determined to befit that of 3rd order standards.
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|Item Type:||USQ Project|
|Item Status:||Live Archive|
|Faculty / Department / School:||Historic - Faculty of Engineering and Surveying - Department of Surveying and Land Information|
|Date Deposited:||18 Feb 2011 03:51|
|Last Modified:||03 Jul 2013 00:30|
|Uncontrolled Keywords:||Ballina Island; New South Wales; permanent survey marks; CORS; continuously operating reference station; mean sea level|
|Fields of Research :||09 Engineering > 0909 Geomatic Engineering > 090906 Surveying (incl. Hydrographic Surveying)
09 Engineering > 0909 Geomatic Engineering > 090903 Geospatial Information Systems
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