Remote GPS land surveying tool

Making land surveying easier, safer & cheaper - an alternative to manual surveying techniques

A Victoria University of Wellington researcher has designed a new low cost GPS sensor tool that can be used to remotely monitor movement up to sub-centimetre accuracy for engineering and land surveying applications.

Innovation overview

Engineers and land surveyors require accurate positional information for many different applications. While GPS is sometimes used, the cost and limited battery life of traditional high accurate GPS solutions means surveyors often prefer more manual methods (e.g. prism surveys) which cannot occur continuously. By using low cost consumer hardware and a unique post-processing algorithm, AccuMM's GPS solution enables highly accurate and continuous positional information at a fraction of the cost of traditional GPS monitoring systems. This means that engineers and land surveyors can remotely and continuously monitor their sites without requiring physical survey visits and do it cost effectively.


Reduce costs
AccuMM offers remote monitoring capabilities and can help reduce the need for ongoing physical survey visits.
Increase Responsiveness
AccuMM provides accurate (sub-centimetre) continuous data that helps in identifying movements earlier so that engineers and surveyors can proactively manage asset risk before critical failure occurs.
Increase Productivity
AccuMM's low cost remote solution enables engineers and surveyors to monitor additional sites which normally wouldn't have been monitored due to the high cost of surveying/ alternative GPS systems.
Increase Safety
AccuMM's remote monitoring capabilities can help increase surveyor and engineer safety by reducing the need for physical visits in risky sites.


Landslide & Slip Monitoring
Remote monitoring solution to help geotechnical engineers and geologists understand the movements associated with landslides and potential slip sites.
Construction slope stability
Assess stability of slope cuts during construction of transport networks (e.g. road and rail corridors)
Building monitoring
Assess stability of adjacent buildings during construction projects.
Dam monitoring
Assess structural integrity of downstream river banks and dam walls by monitoring long term movements.

Trials and Comparative Data

Initial trials of the AccuMM solution have focussed on using it to monitor long term land movement at active land slip sites. To assess the efficacy of AccuMM, we have compared the accuracy of positional information from AccuMM's solution to the current gold standard method of the physical prism based survey approach. AccuMM has shown that it can outperform a prism measurement and is able to provide data continuously. The AccuMM solution is best suited for applications that require long term monitoring and should be considered an alternative of manual based surveying techniques.

Technology Diagram

Research leader

Professor Winston Seah

Winston Seah is a Professor of Network Engineering at Victoria University’s School of Engineering and Computer Science. A senior member of IEEE, and a Professional Member of ACM, Professor Seah’s research focuses on how the the Internet can be used to support untethered communications in a sustainable way—i.e. using renewable energy. His primary interest is in how the Internet connects to things—n...

Contact person

Ashwath Sundaresan

Ashwath is responsible for Viclink’s engineering, medical devices and advanced physics portfolio, and will be working closely alongside the Robinson Research Institute. He moved home to Wellington in early 2018, to take up his new role with Viclink, after living and working in Sydney for many years—most recently as a Strategy and Insight Manager for Google. Prior to that, Ashwath spent six years a...

See Ashwath Sundaresan's technology portfolio