GEODATA AUSTRALIA (GA)

 

LAND SURVEY & CADASTRAL DATABASE

CONSULTING

1.  Review of existing survey inputs, GIS inputs and existing            cadastral database structure for potential upgrading;

2.  Advise on the creation of Infrastructure Project cadastral            databases that can be migrated to the authoritive State            cadastre;

3.  Advise on digital field survey outcomes for efficient Title          and Database outcomes;

4.   Assist  with  the  creation  of  Land  XML  files         to  meet  LPI  NSW  specifications  from   data       input from plans or from geometry created in         a COGO design package;

 

5.   GA  tools generate digital (machine readable)       survey    and    cadastral    data    storage    so        automated   electronic    workflows   can   be         implemented.  We  have  provided consulting        services    to   several   State   and   Territory           jurisdictions  with successful implementations.       These   efficiencies  can  benefit  any  level  of        government; 

6. Utilise the Associativity Tool  in  GeoSurvey™ to  create transition  vectors,  representing  the  movement  of  cadastral points as  the result  of  adjustment, allowing  layers  which are  dependent upon the cadastre to move with the moving cadastre;

 

7.  Software sale and customisation.

GA can assist at any level of involvement, particularly with mentoring through the initial stages of both corporate and project spatial strategies to allow staff to be self-sufficient internally or to assess outsourcing options.

GA strategies to upgrade cadastral databases are mainly based on SD technology but recognise the commercial benefits of integrating existing databases developed by GIS mapping technologies. The former can be a rigorous process that achieves the highest spatial and database efficiencies while the latter is a cost-effective solution with ongoing inefficiencies.

CADASTRAL DATABASE UPGRADE

 

BUSINESS CASE OPTIONS

 
1. Manual or Digital Survey Data Using Geodata Australia Technology - The initial investment could be significant but the nature of the data structure generated is that the investment is amortised in the short to medium term by virtue of the efficiencies introduced, firstly in the ongoing management of the mapping database and, secondly, in connecting to the survey/title management domain.

  

2. Migrating Existing GIS/Mapping Databases - This option involves the mass migration of an existing cadastral database into a Survey Database/Cadastral Fabric Structure. The spatial integrity of the new Fabric remains the same but the new structure allows the more rigorous Survey database tools to be used in updating the current cadastre, spatially upgrading the database and implementing automated Digital Workflows. Geodata Australia provides a basic migration tool or the ESRI Topology Loader can be used to create a Fabric.

 

In this method the Fabric is created with considerably reduced costs compared with manual data entry of all represented survey plans. This then allows the power of the ESRI Parcel Editor to be utilised to automate the adjustment of other Feature Layers to be reconciled with any spatial movements in the cadastral Database.

 

Whilst the data input costs are significantly reduced, rectification of topology and/or accuracy issues will incur ongoing management costs and uncertainties still remain in the data.

In its approach to these options Geodata Australia considers that strategies to upgrade existing cadastral databases could involve a combination of both of the above techniques. This would be dictated by technical and commercial resources.