Case Study – 20km Road Survey Using Drone Based LiDAR

PROJECT

Singleton Safer Roads Project LiDAR Survey

CLIENT

David Cant Surveyors (GHD)

DATE

November 2018

SCOPE

A local council received funding from Transport for NSW’s Safer Roads programme for the design and implementation of 4 road safety projects. 20km of the road was required to be surveyed; the following information is to be contained in the survey:

●   Investigation and location of existing traffic facilities i.e. line marking, signage, guideposts etc.
●   Items likely to affect installation of any proposed measures i.e. driveways, culverts, power poles etc.
●   The survey is to be undertaken with appropriate traffic control if required and if required is to be in accordance with RMS “Traffic Control at Work Sites Manual”
●   100mm Accuracy

SOLUTION

●   Use Nextcore UAV LiDAR as survey capture
●   Fly from 10 safe locations across the length of the site
●   Reduce static observations from survey grade base & LiDAR base against CORS
●   Survey connection to state survey marks & RTK GPS survey QC points across entire job length
●   Feature extraction from LiDAR point cloud
●   Survey features extracted in accurate 3D space

RESULT

●   20km of Survey Accurate data captured in 2 days
●   Feature extracted & drafted in 4 days (compiled hours)
●   Delivered in 3 days from capture
●   Project delivery in 3D platforms as well as AUTOCAD in survey layers