phase-switching interferometer

'phase-switching interferometer' can also refer to...


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A radio interferometer with two aerials in which the signal from one antenna is periodically reversed in phase before being multiplied by the signal from the other antenna. The output is a square wave whose amplitude is proportional to the product of the two signals. As the source moves across the sky, interference fringes are produced in a similar way to those from a correlation receiver, except that any steady background emission is removed.

Subjects: Astronomy and Astrophysics.

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