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- W1987231313 abstract "In a radio interferometer, the error of the antenna position is one of the factors affecting significantly the synthesized map. We have developed a calibration method for the antenna position for the Nobeyama millimeter array. In comparison with the conventional method, the new calibration method has two significant characteristics. First, using the relative phase between reference celestial radio sources, the phase variation of a large time scale due to the atmospheric fluctuation and the receiver variation can be eliminated. Second, by means of the three-dimensional discrete Fourier transform, one can estimate the antenna position errors without any ambiguity. With this calibration method, the antenna positions of the Nobeyama millimeter array were determined within 0.3 mm rms. As a result, directions of celestial radio sources were measured within 0.1 arcsec." @default.
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- W1987231313 date "1991-05-01" @default.
- W1987231313 modified "2023-09-27" @default.
- W1987231313 title "Calibration of antenna positions in millimeter wave interferometry" @default.
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- W1987231313 doi "https://doi.org/10.1002/ecja.4410740507" @default.
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