Understanding aerial mapping with the eBee
• Ensure that there are no obstacles within 60 m of the Linear landing lo-
cation within all approach sectors and within a radius of 10 m around the
Linear landing location. If there are some obstacles in the distance, ensure
that the top of the obstacles is at no more than a 15
◦
angle from the point
60 m from the Linear landing location, as indicated in the figure on page 71.
It is also recommended to not have any obstacles in the opposite direction
of all approach sectors, in case the Linear landing is aborted before com-
pletion.
Caution: It is not recommended to perform Linear landings between
tall obstacles, as they may disturb the GPS signals your eBee needs to
be able to navigate.
• In order to limit the ground speed when landing and to achieve the best
landing accuracy, the eBee should only performa Linear landing against the
direction of the wind. Approach sectors should be as large as possible and
in as many directions as possible to allow the drone to select the optimal
approach direction based on its estimate of the wind. If all of the available
approach sectors are in the direction of the wind an In-flight warning²⁶ will
appear in eMotion when the drone calculates its trajectory (Step 3).
Caution: Ifthe drone performsa Linear landing in the direction ofthe
wind during strong wind conditions or with certain In-flight warnings
or Critical failures it may not be able to slow enough during its de-
scent. It will likely overshoot the Home waypoint location and land
at a high speed, potentially resulting in damage.
• The ground sensor must have sufficient light and texture to accurately de-
tect the height above the ground. Ensure that the ground sensor lens is
clear of dirt or other obstructions. Only attempt Linear landings in full day-
light conditions. Ensure that there is high-contrast surfaces in all the ap-
²⁶ see section ‘In-flight warnings’ on page 143
73
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