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Field Measurement of Effective Leaf Area Index using Optical Device in Vegetation Canopy
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Vegetation Loss Measurements for Single Alley Trees in Millimeter-Wave Bands.
Krzysztof Cichoń1, Maciej Nikiforuk2, Adrian Kliks1,3
1Institute of Radiocommunications, Poznan University of Technology, 60-965 Poznań, Poland.
Sensors (Basel, Switzerland)
|May 25, 2024
Summary
Fixed wireless access (FWA) faces foliage attenuation challenges in millimeter-wave bands. Measurements show significant vegetation loss after the second tree, prompting new model tuning parameters for better accuracy.
Area of Science:
- Wireless communication
- Electromagnetics
- Radio propagation
Background:
- Fixed Wireless Access (FWA) is a key technology for communication links.
- Millimeter-wave (mmWave) frequencies are susceptible to foliage attenuation.
- Existing models represent foliage as random scatterers in the radiative transfer equation.
Purpose of the Study:
- To present vegetation attenuation measurements in the 26-32 GHz band.
- To compare measurement-based foliage losses with model-based predictions.
- To propose new tuning parameters for foliage attenuation models.
Main Methods:
- Conducted vegetation attenuation measurements for a single tree alley.
- Utilized frequencies in the 26-32 GHz range.
- Compared empirical data with theoretical models.
Main Results:
- Vegetation loss increased significantly beyond the second tree in the alley.
- Discrepancies were observed between measured and modeled foliage losses.
- New tuning parameters were derived for improved model accuracy.
Conclusions:
- Foliage attenuation is a critical impairment for mmWave FWA.
- The proposed tuning parameters enhance the predictive capability of foliage attenuation models.
- Accurate modeling is essential for reliable FWA deployment in vegetated areas.
