The town of Keetmanshoop, in Karas (Namibia), is located 450 km south of the capital Windhoek.It is supplied with water from the Naute dam 45 km away by a pipeline dating from the construction of the dam in the 1970s.
The company ALTEREO responsible for carrying out a preliminary study for the renewal of this piplinee, entrusted us with a mission of drone mapping survey in order to produce an orthophotoplan and a DTM.
The mission was carried out in February 2019. We used asenseFly eBee with a sensor senseFly S.O.D.A (corridor mode) for flights and a couple of Trimble GNSS receivers for GCP’s.
Tracé et localisation
The environment was particularly favorable since we were in a desert type landscape with few shrubs as shown in the photo below.
Prise de vue aérienne à 180 m de hauteur au dessus du sol
Some indications to quantify this operation:
33 flights and a little more than 3900 photos were necessary to cover the area with at least 5 strips per flight for a restored width of 120 m in the current section plus a few extra widths.