We have a solar-inverter powered COR(Continuously Operating Reference) station running 24/7 in Awka and I was invited by the Anambra state branch of the Nigeria Institution of Surveyors to talk to them about how COR station should be deployed for cadastral surveys in the state; so I made a presentation at their yearly Mandatory Continuous Professional Development (MCPD) titled “Integrating CORS Technology in Cadastral Survey Practice in Anambra”.
In some parts of Nigeria, it is common to find surveyors carrying out cadastral surveys of properties in the same locality using different coordinate systems. This has affected the profession negatively as surveyors often have to perform coordinate transformations to compare two surveys.
I believe I made a strong case for why it’s important and better for all surveyors in a locality to carry out their surveys in one coordinate system using COR stations instead of having surveyors working in different coordinate systems for no justifiable reason.
In addition, COR stations will help improve the accuracy and consistency of survey jobs because we do not have a sufficient and widely spread network of reliable ground controls. And the time spent by surveyors in looking for ground controls will be eliminated.
Finally, the increasing exchange rate has made it difficult for surveyors to acquire a complete base and rover RTK set equipment which was usually the case in the past. Surveyors are increasingly acquiring only rovers (which are now selling for about the same cost as base and rover last year) and connecting to COR stations to get their job done. The more COR stations we establish, the easier for surveyors to acquire RTK equipment and get their surveys done accurately.
With our partnership with ComNav Technology Ltd. we look forward to establishing more SinoGNSS COR stations around the country for the benefit of surveyors and the surveying profession.