Surface roughness is one of the most important factors that contribute to the brightness or darkness of objects in a SAR image. Surface roughness is the height difference in the surface’s imperfections. Surface structure greatly influences the appearance of an object in SAR imagery. A surface appears smooth if the height variations of the surface’s imperfections obey the Rayleigh or Fraunhofer criterion. A smooth surface produces specular reflection that reflects more of the radar energy away from the radar. A rough surface produces diffuse reflection that reflects more of the radar energy toward the radar. Controlling the surface roughness of an object provides a means to enhance or degrade the appearance of objects in a SAR image. This webinar proposes various methods be used to control surface structure that can have an immediate impact on the appearance of the images in SAR.
To view the associated article with this webinar, please visit this link.
To view the webinar PDF, click here.