Several radio waves with diameters up to 25 meters connected by electronic technologyParabolic antennaObserving the same sky area, the rotation of the earth drives the telescope in the array to move, and each telescope sweeps out an arc, corresponding to a part of the surface of an imaginary "super telescope" with an aperture of several kilometers.The information received by all telescopes in the array is recorded, and then computer synthesis is used to generate the image (synthesis) of the sky area, which is the scene that the super telescope should see.In fact, the simulated super telescope is always imperfect, but its results can provide much more information than any telescope in the array working alone.
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Lyell Synthetic Aperture Radio Telescope at Cambridge University
The synthetic aperture method was developed in Britain and Australia in the 1950s. The first important synthetic aperture telescope was Cambridge's "1 mile" telescope (later increased to 3 miles, or 5 miles, now known asRyle telescope）Its individual parabolic antennas are arranged on a straight track, and some of them can move along the track day by day to simulate different parts of the super telescope.Very large arrayandAustralian telescopeBoth use the principle of synthetic aperture.[1]
The Ryle telescope in the suburb of Cambridge uses the principle of synthetic aperture to simulate the power of a single large antenna with several smaller antennas.[2]
