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The relativistic Doppler effect is the change in frequency, wavelength and amplitude [1] of light, caused by the relative motion of the source and the observer (as in the classical Doppler effect, first proposed by Christian Doppler in 1842 [2]), when taking into account effects described by the special theory of relativity.
The Doppler effect (also Doppler shift) is the change in the frequency of a wave in relation to an observer who is moving relative to the source of the wave. [ 1 ] [ 2 ] [ 3 ] The Doppler effect is named after the physicist Christian Doppler , who described the phenomenon in 1842.
A particular case is the thermal Doppler broadening due to the thermal motion of the particles. Then, the broadening depends only on the frequency of the spectral line, the mass of the emitting particles, and their temperature , and therefore can be used for inferring the temperature of an emitting (or absorbing) body being spectroscopically ...
Henry M. Robert. A U.S. Army officer, Henry Martyn Robert (1837–1923), saw a need for a standard of parliamentary procedure while living in San Francisco.He found San Francisco in the mid-to-late 19th century to be a chaotic place where meetings of any kind tended to be tumultuous, with little consistency of procedure and with people of many nationalities and traditions thrown together.
Doppler spectroscopy (also known as the radial-velocity method, or colloquially, the wobble method) is an indirect method for finding extrasolar planets and brown dwarfs from radial-velocity measurements via observation of Doppler shifts in the spectrum of the planet's parent star. As of November 2022, about 19.5% of known extrasolar planets ...
Pulse compression is a signal processing technique commonly used by radar, sonar and echography to either increase the range resolution when pulse length is constrained or increase the signal to noise ratio when the peak power and the bandwidth (or equivalently range resolution) of the transmitted signal are constrained.
The following edition "supersedes all previous editions and is intended automatically to become the parliamentary authority in organizations whose bylaws prescribe "Robert's Rules of Order," "Robert's Rules of Order Revised," "Robert's Rules of Order Newly Revised," or "the current edition of" any of these titles, or the like, without specifying a particular edition."
The transmitted signal is in the delay-doppler domain. OTFS waveform remains invariant under the operation of the time and frequency domains. When we transmit an OTFS waveform in the delay-doppler domain, we use the Zak transform. This OTFS will satisfy the Heisenberg Uncertainty principle (signal is localized in delay-doppler representation).