blind speeds
blind speeds
The rate of departure, or closing, of a target relative to the radar antenna at which cancellation of the primary radar target by moving target indicator (MTI) circuits in the radar equipment causes a reduction or complete loss of signal. In MTI or pulse Doppler radars, radial target speeds that result in the target range changing by multiple half-wavelengths in the interval between the pulses. Under these conditions, the target is invisible to the radar. Also called
blind velocity.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in classic literature
The question was unexpectedly and suddenly answered for her, by the colourless boy, Bitzer, who came round the corner with such
blind speed and so little anticipating a stoppage on the pavement, that he brought himself up against Mr.
Diversity is widely used in radar signals, beginning with diversity of the pulse interval (Chapter 8), which mitigates
blind speeds. More elaborate diversity schemes are presented in Chapter 9, with emphasis on step-frequency pulses.
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