DroneMetrex has provided aerial mapping services with its TopoDrone-100 UAV system for a new recycling and waste management client in Australia.
According to the company, the client had a requirement for an aerial mapping solution to monitor existing waste mounds under a licence from the Environment Protection Authority (EPA). The client also required base maps to be created to inform future planned expansion of the waste site.
DroneMetrex supplied its photogrammetric mapping TopoDrone-100 UAV system to capture 2.5cm GSD aerial imagery with 25mm absolute accuracy of the 4sq.km site.
The flight was conducted over a 60 minute period, during which company specialists measured by kinematic GPS survey 10 detailed features to use as the GCP's for the photogrammetric processing. The data processing took 2 hours.
Tom Tadrowski, executive director, DroneMetrex, says: ‘Because the TopoDrone-100 uses our unique (patent-pending) Gyro-stabilised Active Mount (DMX-GAM), which houses a 24Mp digital camera with Zeiss lens, full-framed sensor and leaf-shutter, the imagery captured is ‘photogrammetry-ready’. To explain; each image is near-nadir, no crab, and without the random geometric errors of all other digital camera systems.
‘We then process with our own software in the pre-processing stage correcting for the known systematic errors. Once we have the photogrammetric aerial triangulation, and then the generation of the dense point-cloud, we treat this as our base product which allows us to further generate the DTM, DSM, digital orthophoto mosaic, contours and profiles.’
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