Agriculture Reference
In-Depth Information
Fig. 4.14 Miscanthus crop canopy 3D profi le by ground reference data collection vehicle
4.8.3
Conclusion
To get close proximity data of the biomass energy crop, the ground reference data
collection vehicle was established. The gantry employed a 4WD-4WS locomotion
mechanism, and the vertical clearance was adjustable from 3 to 4 m to respond to
the different heights of various biomass energy crops. The gantry collected multi-
spectral images and spectral refl ectance during the crop growing season. Higher
spectral, spatial, and temporal resolutions from real-time image acquisitions were
achieved as compared to aerial and satellite imagery. The gantry with light detection
and ranging (LIDAR) sensor provided the 3D map of the plant in the fi eld, which is
a good additive to the tower remote sensing data. The tower remote sensing data
could be further validated with ground truth data for biomass preharvest monitoring
and SSCM. The gantry can also drive through the fi eld with preset position and auto
navigation so that the high effi ciency of crop sensing could be achieved.
4.9
U nmanned A erial V ehicle -B ased R emote S ensing
4.9.1
UAV-Based Remote Sensing and Instrumentation
An UAV-based remote sensing system is better suited and hence proposed here to fl y
over a large area and collect crop growth information at the right time and the right
place. The autonomous UAV-based remote sensing system as shown in Fig. 4.5c
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