Release date: 01 Nov 2021
Revision: 1.0
2.4.5.2 Grid pattern
Hovermap has been found to generate dense and accurate maps when scanning in a grid pattern
traveling at 5 mps with a 40 m loop spacing. This pattern allows large areas to be covered in a short
space of time, subject to the proper consideration of the features of the area.
2.4.6 Flight parameters
Hovermap is a complex system that interacts with its environment in a number of ways. The advice on
which specific flight parameters you should follow is therefore largely based on the environment in
which you are operating. Every environment is different, and Hovermap perceives those environments
in different ways. Because of this, the height, speed, and patterns that you need to follow to achieve a
good result vary. The following information is a guide, based on a general user experience across many
different environments.
2.4.6.1 Speed
Keep the speed of the Hovermap below 5 mps when flying, and below 25 mph (40 km/h) when driving.
This gives Hovermap sufficient time to analyze the features in its environment and piece them together.
Flying faster than this can cause Hovmermap to lose its place, and can distort your data. Where
practical, fly below 3 mps and drive below 12 mph (20 km/h).
2.4.6.2 Height
Height is the most difficult factor to define, as this is determined by your environment. The best
practice is to determine the lowest possible height you can fly to efficiently cover the area required,
while not exceeding more than 50 m AGL. Even at this height, the data can become distorted if the
environment lacks distinct features.
2.4.7 Georeferencing
Georeferencing your scans using ground control points is the most efficient way to check the quality of
your data.
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