THE EFFECT OF DIFFERENT FLIGHT HEIGHTS ON GENERATED DIGITAL PRODUCTS: DSM AND ORTHOPHOTO

Year 2020, Volume: 2 Issue: 1, 1 - 9, 01.06.2020

Mehmet Özgür Çelik , Aydın Alptekin , Fatma Bünyan Ünel Lütfiye Kuşak , Engin Kanun

Abstract

Unmanned Aerial
Vehicle (UAV) allows you to create digital surface models (DSM) and orthophotos
of an area in a short time by photogrammetric methods. In the last decade, UAV
and Global Positioning System (GPS) have been used to create real, reliable and
high-resolution maps. In this study, the effect of flight height on DSM and
orthophoto was investigated. Two flight plans at a height of 30 to 50 meters
were prepared. Images taken with UAV were used to produce DSM and orthophoto.
Resolution of maps were compared when models were produced.  Compared to a flight height of 50 meters, a
more detailed and high-resolution model was created with 30 meters. Although
the flight data from 30 meters gave better results, the flight process took
longer. Also, more photos were taken and the file size took up more space. As a
result of this comparison, it was determined that the flight height should be
determined according to the terrain structure, accuracy, precision and
time-cost balance expected from the job.

Keywords

Unmanned aerial vehicle (UAV), digital surface model (DSM)

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