Rajesh Uppal

Rajesh Uppal

  • Joined: January 29, 2016
  • Articles: 3615

Ultra accurate Optical clocks to enable GPS with centimeter-level location accuracy and distributed engagement and surveillance DOD architecture

opicalatomicclock

Phones and other GPS-enabled devices pinpoint your location on Earth by contacting at least four satellites bearing atomic clocks. Each of these satellites provides a time stamp, and the system calculates your location based on the relative differences among those…...

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DARPA ROCkN optical atomic clocks will enable multidomain synchronization among various platforms, multi vehicle swarms

DARPA ROCkN optical atomic clocks

Synchronizing modern electronic systems such as the Internet and GPS navigation is currently done using microwave atomic clocks that measure time based on the frequency of natural vibrations of cesium atoms. Those vibrations occur at microwave frequencies that can easily…...

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Russia’s DARPA, the Advanced Research Foundation aims breakthrough high-risk research and development

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Emerging technologies such as space technology; 5G, Cloud computing, IoT, “big data” analytics, artificial intelligence, robotics, photonics, materials, nanotechnology; biotechnology; and quantum computing, have significant potential to create, significant social, economic, and military benefits. Therefore countries led by US, China and…...

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Cloud-Network-Device Convergence

Cloud computing is the delivery of different services through the Internet. Companies that provide cloud services enable users to store files and applications on remote servers and then access all the data via the Internet. Cloud computing is a popular…...

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Passive and Active Soldier Armor cooling enhance soldier performance in extreme environments

The wearing of body armour  provide troops an unparalleled advantage on the battlefield, improving survivability and reducing casualtiesis. It has also been very effective in reducing injuries and fatalities within the police force and correctional services.   This protection comes…...

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Satellite On-board connectivity through beam switching and scanning

High-throughput Satellite or HTS systems represent a new generation of satellite communications systems, that provide a significant increase in capacity than conventional communication satellites. They utilize frequency reuse and multiple spot beams to deliver vast throughput for the same amount of allocated…...

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Digital Signal Processing (DSP) algorithms and Digital Signal Processors

Digital Signal Processors (DSP) take real-world signals like voice, audio, video, temperature, pressure, or position that have been digitized and then mathematically manipulate them. Signals need to be processed so that the information that they contain can be displayed, analyzed,…...

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Model-Based Systems Engineering (MBSE) for Satellites and Aerospace

Model Based Systems Engineering MBSE

A system is defined by NASA as  a construct or collection of different elements that together produce results not obtainable by the elements alone. Systems Engineering (SE) is defined as: The process by which a customer’s needs are satisfied through…...

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Graphene nanoribbons

Graphene Nanoribbons

Graphene is a 1-atom-thick layer of tightly bonded carbon atoms arranged in a hexagonal lattice. Graphene the world’s first 2D nanomaterial, is widely regarded as the “wonder material” of the 21st century due to the combination of its extraordinary properties.…...

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Graphene infrared (IR) photodetectors enable ultrafast and room temperature IR cameras ultrasensitive for entire spectrum, and 3D cameras

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Photodetectors, also called photosensors, are sensors of light or other electromagnetic radiation. There is a wide variety of photodetectors that may be classified by mechanism of detection, such as photoelectric or photochemical effects, or by various performance metrics, such as…...

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