研究目的
Investigating the potential of P-band PolIn-SAR and tomography for retrieving vegetation parameters from multi-baseline airborne data over tropical forests.
研究成果
The AfriSAR data demonstrated the potential of P-band SAR imaging for the ESA-BIOMASS mission in tropical forests. Phase screen correction was essential for accurate PolInSAR and tomographic results. The study showed good correlation between SAR-derived vegetation parameters and LIDAR data, highlighting the utility of SAR for forest structure analysis.
研究不足
The study is limited by the need for phase screen correction due to uncertainties in airborne platform trajectories. The resolution of SAR tomography at P-band may not match that of LIDAR imaging systems.
1：Experimental Design and Method Selection:
The study utilizes P-band PolIn-SAR and tomography techniques for vegetation parameter retrieval.
2：Sample Selection and Data Sources:
Data was collected over the Lopé National Park in Gabon using ONERA's SETHI airborne SAR system and compared with LIDAR datasets.
3：List of Experimental Equipment and Materials:
ONERA's SETHI airborne SAR system, Riegl VQ480U sensor for Small Footprint LIDAR (SFL) dataset, NASA's Land Vegetation Ice Sensor (LVIS).
4：Experimental Procedures and Operational Workflow:
Implementation of phase screen correction, PolInSAR and tomographic analysis, comparison with LIDAR data.
5：Data Analysis Methods:
Capon spectral estimator for vertical profile estimation, PolInSAR estimation approach for ground and vegetation height.
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