研究目的
To monitor the fine structure and the biochemical parameters of vegetation using a multispectral full-waveform LiDAR instrument prototype.
研究成果
The multispectral LiDAR instrument can simultaneously obtain range and spectral information with high measurement accuracy, showing potential for generating 3-D point clouds with spectral information for vegetation monitoring.
研究不足
The instability of supercontinuum laser power and the small diameter of the refracting telescope may result in lower receiving sensitivity and SNR. The oscilloscope used for high-speed analog/digital conversion may decrease test efficiency in outdoor environments.
1：Experimental Design and Method Selection:
The design includes a 2-D scanning platform, a supercontinuum laser source, a receiving optical system, and a multichannel full-waveform measurement module.
2：Sample Selection and Data Sources:
Vegetation samples with varying levels of greenness were used.
3：List of Experimental Equipment and Materials:
Includes a supercontinuum pulsed laser source, avalanche photon diodes, a high-speed oscilloscope, and bandpass filters.
4：Experimental Procedures and Operational Workflow:
Involved ranging and spectral experiments to evaluate the instrument's accuracy and capability.
5：Data Analysis Methods:
Included calculating distance from time-of-flight and spectral reflectance from intensity information.
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