Electronics & EW

Over the past two decades, many wireless systems have been developed and widely used around the world. The most important examples are cellular mobile radio and Wi-Fi systems. Just like radio and television broadcasting systems, they radiate electromagnetic waves/energy into the air but a large amount of the energy is …

As the name indicates, ultrasonic sensors measure distance by using ultrasonic waves. The basic working principle of these sensors is based on echolocation, which involves transmission of ultrasonic waves to the target object, which reflects it back to the source after receiving the initial wave. The ultrasonic sensors detect the exact …

Electromagnetic waves in the millimeter-wave band  (with frequencies between 30 and 300 GHz, or wavelengths between 10 and 1.0 mm) have attractive characteristics. One of their features is the wider usable frequency band compared with waves in the microwave band or lower bands. Another feature of using the millimeter-wave band is the fact …

Naval Warships now faces wide spectrum of threats from air threats such as hypersonic missiles, ballistic and cruise missiles, rail guns, lasers , UAVs  and underwater threats like cavitating torpedoes.  One of the prime over water threat is from Anti-Ship Missiles type of guided missiles mostly of the sea skimming …

Magneto resistor is a type of resistor whose resistance changes when an external magnetic field is applied. In other words, the flow of electric current through the magneto resistor changes when an external magnetic field is applied to it.   Magnetic field is the region present around a magnetic object …

The advancement of Sensors, Communications and Radars have given rise to Electronic Warfare, which encompasses, in all battle phases, military actions involving the use of EM energy to determine, exploit, reduce or prevent hostile use of EM spectrum and the actions, which retain friendly use of the EM spectrum. The …

“Electronics have dramatically changed the way we live, conduct business, communicate, and educate. Visions of the future foretell of ubiquitous computing and sensing. However, the environments in which electronics can reliably operate are limited. In consumer applications, typical operating temperatures range from -40° to 85°C. The “wider” military temperature range …

The emerging battlefield is a multi-domain battlefield which shall include all the traditional domains of land, air and sea as well as Cyber, Space, Low Intensity conflicts, Information warfare including Psychological warfare and cognitive warfare shall be exploited by our adversaries simultaneously or in any desired combinations.   Implementing multi …

The U.S.  Navy and DARPA ran a facility–the High Frequency Active Auroral Research Program (HAARP) in Gakona, Alaska—before it was passed to the University of Alaska in 2014. HAARP  was a research program to study ionosphere and its response to high frequency excitations from ground. “The official objective of the …

Although the hardware and software technology for fully autonomous cars is ready today, the cars themselves may still be a decade or more away, vehicle experts said at the recent North American International Auto Show in Detroit. The challenge for automakers and suppliers lies in test and validation, as well …