Radio Wave
Radio Wave news and technical articles from Military & Aerospace Electronics magazine. Search Radio Wave latest and archived news and articles
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Air Force scours industry for replacement part to nuclear bomber communications system
… essentially tunes an antenna to enable it to transmit and receive radio waves efficiently over a relatively wide frequency range. Without ..... bands between about 2 and 30 MHz rely on relatively long radio waves that bounce off the layer of the atmosphere called the ionosphere …
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DARPA to brief industry 18 March on program to create common RF phased array building blocks
… for the antenna to interact with radio waves ; and over-the-air coherent ..... aggregation. Phased arrays steer radio waves without using moving parts. These ..... or phases, to steer beams of radio waves . Building these arrays, however …
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Satellite communications becoming small, mobile, and available to warfighters on the front lines
… greater security than communicating using radio waves , but it carries several restrictions ..... communicate with any satellite, while radio waves can pass through many barriers that ..... typically are carried out exclusively using radio waves rather than lasers. Outside of the …
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Research initiatives pumping new life into phased-array radar
… ground site and for aircraft. Covert radar surveillance is a bigger deal that might out. A reader by its nature transmits radio waves which anyone nearby its presence. Turning on radar is kinda like sweeping a flashlight around the darkened room. You might …
bigger deal that might -- out. A reader by its nature transmits radio waves which -- anyone nearby -- its presence. Turning on -- radar is kinda like sweeping a flashlight around the darkened room. You -
Communicating at the speed of light: laser technology enables high-bandwidth communication and imagery
… optical communication over radio signals is clear. Free-space optical communication does not experience interference from radio waves and is nearly impossible for an enemy to intercept or disrupt. Free-space optical communication is particularly applicable …
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MEMS and nanotechnology maturing for certain military applications, yet its potential is still immense
… speeds, and is difficult for an adversary to intercept or jam because lasers are focused energy with little scatter, unlike radio waves that broadcast widely to general areas. Using MEMS and nano technology to fabricate extremely tiny deformable mirrors can …
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Navy and Boeing to apply passive millimeter wave imaging technology to persistent surveillance and perimeter security
… full-body scanning systems that screen passengers at airport security checkpoints, reflects extremely high-frequency radio waves off objects to make an image. Passive millimeter wave sensors use raw energy emitted from people and objects, and does not …
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Video: Research initiatives pumping new life into phased-array radar
… ground sites and aircraft. Covert radar surveillance is a bigger deal than it might sound. Radar, by its nature, transmits radio waves , which alerts anyone nearby to its presence. Turning on a radar is kind of like sweeping a flashlight around a darkened …
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Two companies to tackle SIGINT technologies to pinpoint HF radar and communications emitters worldwide
… buildings and mountain ranges. HF radio signals behave in a more complex manner and are much more difficult to locate. HF radio waves not only follow line-of-sight paths, but they also bounce off of layers Earth's upper atmosphere called the ionosphere …
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Boeing non-kinetic missile performs flight test with little to no collateral damage
… powered energy, knocking out the target's data and electronic subsystems. CHAMP allows for selective high-frequency radio wave strikes against numerous targets during a single mission. The goal of CHAMP is to create a weapon that can eliminate the …
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