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Rajesh Uppal

Phased array antennas for phased array radars to satellite constellations to SATCOM On-The-Move (SOTM) on warships

Wireless electronic systems have been relying on dish antennas to send and receive signals. These systems have been widely used where directivity is important and many of those systems work well at a relatively low cost after years of optimization. These dish antennas having a mechanical arm to rotate the …

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The denial of GPS services during Kargil War has driven ISRO to develop Indian Regional Navigation Satellite System (IRNSS), superior to GPS

The Global Positioning System (GPS), is a global navigation satellite system (GNSS) that provides location and time information in all weather conditions, anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites. Each one transmits information about its position and …

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DARPA V-SPELLS to develop automated tools for understanding, Re-engineering and Assurance of legacy software of Defense and Aerospace systems

The complexity of  aerospace and defense software has grown manyfold. For example, the U.S. Air Force F-22 Raptor jet fighter, consists of about 1.7 million lines of software code, while the F-35 joint strike fighter has about 5.7 million lines of code to operate its onboard systems. Boeing’s new 787 …

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Hybrid Free Space Optics (FSO)/Radio Frequency (RF) communication systems can improve the performance of Free space optical communications

Free-space optical communication (FSO) is an optical communication technology that uses light propagating in free space to wirelessly transmit data for telecommunications or computer networking. “Free space” means air, outer space, vacuum, or something similar. FSO operates on the Line-of-Sight phenomenon, consisting of a LASER at source and detector at …

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RF/Microwave Switching Technologies

One of the most common functions in all electronic circuitry is switching. Switching has a wide range of uses. Engineers in industries ranging from telecommunications to military/aerospace need high-performance RF/microwave switching as part of their test setups. An RF switch or microwave switch is a device to route high frequency …

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Faraday rotator mirror

Michelson proposed an interferometric apparatus in 1890 following an earlier suggestion by Fizeau. The invention became the precursor of many important modern optic measurement techniques. The Michelson Interferometer, as it is called, is used to measure small optical path length changes. The classic Michelson Interferometer consists of two mirrors (one forming …

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Hydrogen Fuel Cell propulsion technology for UAVs and Drones enable quiet, reliable, low-maintenance and long edurance missions operations

UAVs have evolved into increasingly capable platforms deployed for a wide variety of applications. The capability to fight effectively in urban areas against widely dispersed forces, while minimizing collateral damage and achieving information superiority has enabled the UAVs to play a greater role in critical missions. The UAVs  have become one …

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US Army’s JUDI is employing Conversational AI to imrpove soldier-robot interaction for Manned-unmanned teaming (MUM-T)

Since fully autonomous UAS are still far off, the  US Army has developed concept of Manned-unmanned teaming (MUM-T)  for operation in A2/AD environments. Through MUM-T operations they expect to combine the strengths of manned and unmanned  platform to increase situational awareness, allowing the armed forces to conduct operations that include …

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US Army developing Manned-Unmanned Teaming ( MUM-T ) technologies in multiple domains for operation in A2/AD environments

US military is facing increasingly Anti-access /Area denial environment, a set of overlapping military capabilities and operations designed to slow the deployment of U.S. forces to a region, reduce the tempo of those forces once there, and deny the freedom of action necessary to achieve military objectives . Unmanned Air …

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US Army xTechSearch competitions developing innovative dual use technologies for next generation military systems

The 2015-2018 U.S. Department of Defense Agency Strategic Plan underscores the criticality of innovation in its strategic goal to “achieve dominant capabilities through innovation, technical excellence, and defense institutional reform.” Echoing this priority, Department of Defense (DoD) leaders frequently point to accelerated innovation across the department as critical to putting …

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