14°48′E 15°0′E 14°45.6′E 14°43.56′E 14°43.58′E 20°16.8′S 20°17.45′S 0 10 20 30 40 m 0 2.5 5 14°43.61′E 20°17.42′S 14°43.58′E 20°17.45′S 20°24′S 20°18.6′S 14°43.56′E 0 14°43.61′E 20°17.42′S 20°12′S 14°43.2′E 800 1,600 m 7.5 10 km 0 10 20 30 40 m (a) 5m GSD 30 m GSD 45 50 45 40 35 30 25 20 15 10 5m 5 0 16 140 20 1 00 0 1 8 0 6 40 Wavelength 20 0 0 30 m Wavelength Mixed Pixel (Tree + Soil + Road) 40 35 30 25 20 20 40 60 80 100 15 10 Pure Pixel (Tree) (c) Urban RGB (b) 2001 2002 2003 2004 2005 2006 (d) FiGUrE 1. (a) The multiscale nature of diverse data sets captured by multisensor data (spaceborne, airborne, and UAV sensors) in Namibia [14]. (b) The tradeoff between spectral and spatial resolutions. (c) Elevation information obtained by lidar sensors from the University of Houston. (d) A time-series data analysis for assessing the dynamic of changes using red-green-blue (RGB) and urban images captured from 2001 to 2006 in Dubai, United Arab Emirates. march 2019 ieee Geoscience and remote sensing magazine 9