
It’s a warm, sunny morning at the Homestead National Monument of America in southeastern Nebraska. A burn crew dressed in yellow and green flame-resistant clothing is about to set a patch of tall-grass prairie on fire — on purpose. These kind of burns aren’t unusual. But today’s burn is; a team from the University of Nebraska is testing a fire-starting drone. Continue reading

The U.S. Customs and Border Protection’s (CBP) National Air Security Operations Center in Jacksonville recently hosted 12 “Big Red” Sailors from Unmanned Patrol Squadron (VUP) -19, the Navy’s first MQ-4C Triton Unmanned Aerial System (UAS) squadron, for a half-day visit.
The Mexican Secretariat of the Navy (SEMAR) has deployed Arcturus T-20 JUMP unmanned air vehicles (UAVs) to the coast of Sonora for maritime surveillance operations.

Virtually all current imaging methods rely on light traveling directly from the object to be imaged to the imaging device. Although direct, ballistic, single-bounce light components generally make up a large portion of the total light that is collected by an imaging system, there is a significant contribution from multi-bounce light. This light is scattered or reflected by surfaces in the scene multiple times on the path from light source to detector.