correlation receiver

correlation receiver

A radio-astronomy receiver in which either the noise power from a single antenna is split and multiplied with itself or the noise power from the two arms of an interferometer (see radio telescope) are multiplied together. Signals that are uncorrelated (completely unrelated) give an output whose average value is zero when multiplied together. Correlated signals, however, produce components near zero frequency that give a steady deflection in the output of the multiplier. In addition to their use in radio interferometry, correlation receivers are also used to reduce the effect of interference and of changes in the gain and other parameters of the system. See also phase-switching interferometer.
References in periodicals archive ?
It is well known that the BER of a correlation receiver is [P.
Consider using a correlation receiver to coherently demodulate the desired user's signal.
Correlation receiver is a widely used method of detecting objects in free space.
However, the correlation receiver does not operate well for a GPR because the waveform of the received GPR signal is distorted by the dispersive media underground, and the received signal model described by (2) is not valid.
It is supposed that the correlation receiver is matched to the (K+1)-th transmitter spreading sequence [c.
At the output of correlation receiver the following values will be obtained at the time moments of [jT.
where A--a coefficient which depends on the parameters of correlation receiver elements.
In the case of the correlation receiver detector, UWB and gate pulses are multiplied to produce a short output unamplified pulse whenever there is a coincidence.
The MIR, shown in Figure 8, is an integrating peak detector (McEwan, 1994), as opposed to the multiply-and-average correlation receiver detector previously described.
282-291, with a correlation receiver shown in Figure 189 on page 289 (Fig.
A correlation receiver for selective reception is shown in Harmuth (1975, Fig 9).
The proposed methods include arrays of emitters and trains of pulses in conjunction with correlation receivers.

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