The angular geometry of a stealth aircraft does more to reduce its radar signature than any coating applied to its surface.

Until recently phased array radar has been very expensive, used only for military applications where the cost of survival weighs in the balance. With the advent of low-cost microwave devices and ...

MIT researchers have developed radar technology that provides real-time video of what is happening behind solid concrete walls measuring four to eight inches (10-20 cm) thick. Just like any other ...