研究目的
Investigating the use of a two-dimensional laser scanning range finder for boundary detection and identification in UAV spray operations to improve pesticide utilization and reduce harm.
研究成果
The study demonstrated that a two-dimensional laser scanning sensor could effectively identify spray operation boundaries by measuring distance and reflection differences between rice and ridge. Accurate boundary identification is crucial for UAV path planning and spray operation efficiency.
研究不足
The study noted misjudgment points on the left side of the laser emission origin due to the randomness of field crops. The accuracy of boundary identification was affected by UAV flight characteristics and environmental conditions.
1：Experimental Design and Method Selection:
The study involved constructing a laser detection system to measure distances and reflection values of rice and ridge from a UAV. The system included a two-dimensional laser scanning sensor, an attitude sensor, and a GPS sensor mounted on the UAV.
2：Sample Selection and Data Sources:
The test site was an experimental rice field at maturity in Zhenjiang, China, with fixed-height belts arranged along the flight path for reference.
3：List of Experimental Equipment and Materials:
Equipment included a two-dimensional laser scanning sensor, attitude sensor, GPS sensor, Kestrel 4000 portable weather meter, and YGY-FSX2 wind speed and direction meter.
4：Experimental Procedures and Operational Workflow:
The UAV flew over the field at constant speeds and heights, with laser data collected and processed to identify boundaries based on height differences between rice and ridge.
5：Data Analysis Methods:
Data was processed using median filtering, and boundary recognition was based on fitting the feature difference between rice and ridge under different heights and speeds.
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