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Definition of "Doppler Shift" |
The apparent change of frequency caused by the motion of the frequency source (transmitter) relative to the destination (receiver). Refer to Doppler Frequency Shift. The degree of observed change in frequency (or wavelength) of a wave due to the doppler effect. / a frequency shift in a received signal caused by time-variant transmission delay, or equivalently time-variant propagation path length. This in turn is caused by movement of terminals with respect to each other, or by movement of reflecting objects. In optics, frequency shifts imposed on laser beams such as when used in laser radar or when diffracted by an acoustic wave. |
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