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Chapter 5 Appendix
Glossary
Alphabetical order
Farm
A collection of field groups. Central management
of multiple farms is possible in Fast Field Analyzer.
Field
The stitched image display area. Multiple fields can
be set for a single farm.
GeoJSON format
This is a format that uses JavaScript Object
Notation (JSON) for encoding various geographical
data structures.
See the following website for further details on
GeoJSON.
http://geojson.org/geojson-spec.html
GLONASS
A positioning system using Russian satellites.
GNSS (Global Navigation Satellite System)
This is the general term for satellite positioning
systems such as GPS and GLONASS. This
technology sends a signal containing the time
of origin from a satellite to a receiver on the
ground, and calculates the position from the time
difference. This technology enables autonomous
drone flight.
GPS (Global Positioning System)
A positioning system using American satellites.
Home point
This is the drone takeoff position.
Mission
A flight plan with settings such as flight path,
waypoints, altitude, and speed so that the drone
can fly automatically.
NDVI (Normalized Difference Vegetation Index)
This index uses the characteristics of light reflected
from vegetation along with satellite data and
a simple formula to understand the status of
vegetation. It represents the amount and health of
vegetation.
Orthoimage
An aerial photo corrected for uniform scale and
size so that it is displayed at the correctly and
without tilt when viewed from above, the same as
a map.
RTH (Return To Home) function
This function automatically brings the drone back
to its takeoff location. When enabled, this function
automatically sets the takeoff location as its home
point using GNSS and automatically returns the
drone to the home point when the mission is
completed.
VRT (Variable Rate Technology)
This technology divides agricultural fields into
small cells for management for adjusting and
spraying weedkiller, etc.
Waypoint
A specific point on the route designated during
navigation. The drone automatically flies to the
designated waypoint.
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