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The telecommunications signal in a point-to-multipoint system is typically bi-directional, TDMA or channelized. Systems using frequency-division duplexing (FDD) offer full-duplex connections between base station and remote sites, and time-division duplex (TDD) systems offer half-duplex connections. Point-to-multipoint systems can be implemented ...
CROW Design Manual for Bicycle Traffic is a publication on bicycle transportation planning and engineering in the Netherlands. It is published by CROW, a non-profit agency advising Directorate-General for Public Works and Water Management formerly Ministry of Transport and Water Management (Netherlands) .
Satellite navigation systems send several signals that are used to decode the satellite's position, distance between the user satellite, and the user's precise time. One signal encodes the satellite's ephemeris data, which is used to accurately calculate the satellite's location at any time. Space weather and other effects causes the orbit to ...
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Beam steering is a technique for changing the direction of the main lobe of a radiation pattern.. In radio and radar systems, beam steering may be accomplished by switching the antenna elements or by changing the relative phases of the RF signals driving the elements.
A wireless system that can be retrofitted onto any bicycle was announced in 2016. [12] The front and rear derailleurs remain in place, while a wireless gear-change controller is added to the handlebar, with configuration of the system via an iOS/Android app, and customization can be added to the button controllers via the Bluetooth app. [13]
Despite the fact that all the old source and binary builds licensed as an open-source has been deleted from SourceForge by developer in 2019, few code snapshots of original code and a fork of rattleCAD 3.x, hosted on GitHub, [36] [37] [38] and binary of the last open-source rattleCAD 3.6.30 and older releases, still circulated on the internet ...
WSPR (pronounced "whisper") is an acronym for Weak Signal Propagation Reporter. It is a protocol, implemented in a computer program, used for weak-signal radio communication between amateur radio operators. The protocol was designed, and a program written initially, by Joe Taylor, K1JT. The software code is now open source and is developed by a ...