In this study, the characteristics of a wideband, low-profile, double-shell Halo antenna is investigated. The horizontally polarized with small diameter and relative bandwidth about 4%, which corresponds to narrow characteristic. Therefore, as conventional broadband method, it possible increase while maintaining by loading parasitic elements vertically above below. However, disadvantage method ...

This paper compares the paradigms of LiDAR and aerophotogrammetry in the context of building extraction and briefly discusses a photogrammetric strategy for refining building roof polyhedrons previously extracted from LiDAR data. In general, empirical and theoretical studies have confirmed that LiDAR methodologies are more suitable in extracting planar roof faces and ridges of the roof, whereas...