Nature provides many examples of optical structures whose properties arise from an intricate morphology. The brilliant colors seen in butterfly wings, beetle carapaces, and peacock feathers, for example, are due in large part to their complex structure, says DARPA. These…...
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In recent years, precision guided weapons play more and more important role in modern war. One of the greatest strengths of a precision strike missile is a reduction in the number of weapons or aircraft sorties required to destroy a…...
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Humans view the intensity of light as the various colors of the spectrum. Characteristics of light include amplitude (intensity), frequency (color), polarization, and coherence. The human eye has cone cells, that correspond reflected light from objects into colors which range…...
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Sensors allow humans to feel and understand their world, and their development lays the foundation for the fulfillment of information society and has formed a huge industry. For its implementation the Internet of Things relies heavily on sensor technology.In the…...
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There is virtually no part of a modern defense system that is not impacted in some way by optics and photonics, even when the system is not optically based. Modern defense systems are migrating toward optically based imaging, remote sensing,…...
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The capability of Russia and China to disrupt American military wireless and satellite communications using electronic warfare has been rising. This is athreat to US Navy operations that require connectivity among a diverse set of platforms, including submarines, surface ships,…...
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Among the uses of Laser directed energy weapons (DEW) systems are providing very short-range air defense capability, close-in protection for naval vessels, counter-unmanned aerial vehicle (UAV), and protecting friendly forces from mortar and artillery attack. Laser require a power of the…...
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Currently, the most widely used technology to detect underwater objects is sound navigation and ranging (SONAR), because acoustic waves can penetrate the water depths to the bottom of the sea. SONAR also suffers from unwanted multipass echoes that are due…...
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In the wake of increasing electronic gadget sales, the overheating problem for battery chargers has become an increasingly common safety issue. Overheating of chargers certainly can be caused by substandard chargers, faulty batteries, or by misuse of the chargers. In…...
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GPS hacking and spoofing have made headlines around the world in recent years, from researchers successfully hacking a yacht’s navigation to bring it off its programmed course to the discovery of dozens of Russian ships whose GPS signals indicated they…...
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