Foliage-penetrating ladar technology may improve border surveillance
This example of a 3-D ladar point cloud shows a fully foliated field site. Color indicates elevation above the ground, with red tones indicating a higher elevation value (for example, tree tops and vegetation) and blue tones indicating lower elevation value (ground-level vegetation and the ground itself). Credit: Massachusetts Institute of Technology The United States shares 5,525 miles of land border with Canada and 1,989 miles with […]