2013 Fiscal Year Final Research Report
Improvement of a model to estimate the vegetation coverage of rice by an airborne laser scanner measuring system
| Project/Area Number |
23580361
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Agricultural information engineering
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| Research Institution | Nagaoka University of Technology (2012-2013)
Fukushima National College of Technology (2011) |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Keywords | リモートセンシング / 生育量推定 |
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| Research Abstract |
For rice growth monitoring using airborne laser scanner (LS) measurements, it is necessary to evaluate how the following factors would affect acquired LS data: the planting density (PD), the scanning path direction (SPD) and the inclination of the laser scanning plane (LSP). In this study, a prototype of a small airborne LS measuring system that acquires the LS data efficiently was manufactured for evaluating those factors and field experiments were performed. Though the prototype system was tested, the acquired LS data were affected by fluctuations of the airframe. Results of the field observations were as follows: the LS data corresponding to the upper parts of plants were increased in the oblique LSP more than in the vertical LSP. Where the vegetation coverage greater was than 40%, the surface of the rice field could not be detected by the LS measurements regardless of the PD or the SPD. In dense planting, a new monitoring method that considers the effect of the SPD is necessary.
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