Many projects on these pages do clever things with video. Whether it’s digital or analogue, it’s certain our community can ...
Abstract: This paper shows the optimality of Pulse-Position Modulation (PPM) for covert communications over discrete-memoryless channels. Specifically, the concatenation of a random m-ary outer code ...
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How GPS really works, how satellites calculate your position and why accuracy has limits
In this video, we break down how GPS determines your position using satellite timing, atomic clocks, and distance calculations. We also explore the real world sources of error, from atmospheric ...
Copyright 2026 The Associated Press. All Rights Reserved. Copyright 2026 The Associated Press. All Rights Reserved. The Trump administration is recalling nearly 30 ...
Mohsen Baqery is a Guide Staff Writer from Turkey. With a passion for gaming that borders on obsession, Mohsen thrives on guiding fellow gamers through the most challenging obstacles while exploring ...
Abstract: This brief presents a low-power, high-data-rate impulse-radio ultra-wideband (IR-UWB) transmitter that integrates a two-dimensional differential pulse position modulation (2D-DPPM) with time ...
Although not a household scientific name like Albert Einstein or Isaac Newton, Indian mathematician Srinivasa Ramanujan—who tragically died in 1920 at the age of 32—was one of the greatest minds in ...
Government reporters Meryl Kornfield, Hannah Natanson and Lisa Rein can be reached securely on Signal at (301) 821-2013, (202) 580-5477 and (202) 821-3120, respectively. The Department of Veterans ...
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