Rajesh Uppal

Rajesh Uppal

  • Joined: January 29, 2016
  • Articles: 3613

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

IRNSS Indian regional navigation satellite system 1

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…...

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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

DARPAV SPELLS

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…...

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

Hybrid FSO RF communication system

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…...

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RF/Microwave Switching Technologies

General Microwave Switches and Switch Filter Banks

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…...

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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…...

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

Drone fuel cells

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…...

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

Army JUDI

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…...

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

mannedunmannedteam scaled

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…...

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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…...

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DARPA  thrust in Terahertz electronics for future military wireless and sensing

darpaTHz

The terahertz (THz) frequency band is a fascinating and relatively unexplored part of the larger electromagnetic spectrum (EMS). The terahertz frequency range, lying between electronics and optics (300 to 3000 gigahertz frequencies), can be disruptive force in sectors as diverse as…...

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