Radar altimeters are the sole indicators of altitude above a terrain. Spectrally adjacent 5G cellular bands pose significant risks of jamming altimeters and impacting flight landing and takeoff. As wireless technology expands ... Optics & Photonics ...
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More recently, Unmanned Aerial Vehicle LiDAR (UAV-LiDAR) has a lower flight altitude and a higher point cloud density (around 50 pts/m2 to 350 pts/m2), which provides a reliable data source for fine-scale AGB estimation [15]. What types of input features or attributes are used in forest...
2.2.1. Airborne LiDAR Point-Cloud and UAV Images The survey was carried out under the condition of light breeze in the afternoon to prevent changes in the natural environment affecting the flight status and data quality of UAV. The LiAir VH2 UAV–LiDAR system, which has integrated light and...
Keywords: land-cover classification; superpixel-based; multiple-component decomposition; supervised locally linear embedding (S-LLE); polarimetric synthetic aperture radar (PolSAR) 1. Introduction Polarimetric synthetic aperture radar (PolSAR) can provide more useful information of targets with four ...