The objective of this study is to develop a system that can generate a map regarding crop
status obtained by mounting an imaging sensor on an unmanned helicopter. The flight
characteristic of an unmanned helicopter is effective for remote sensing. A real-time
kinematic global positioning system (RTK-GPS) was adopted, and an inertial sensor (INS)
that provides posture (roll and pitch angles) was installed in the helicopter. In addition, a
geomagnetic direction sensor (GDS) that outputs an absolute direction was also attached to …