The Minimum Spanning Tree Problem in the Phase Calibration for the Spatial FFT Interferometer
[摘要] AchievingaNyquist-ratedirect-imagingobservationusingaspatialFFTinterferometer,instrumentalphaseerrorsintransmissionlinesmustbecalibratedbeforetheobservation.Weimprovedthephase-calibratingsystemintheWasedaFFTinterferometerbyincreasingthenumberofsimultaneousobtainablefringebaselinesfrom84to128,andusingthealgorithmoftheminimumspanningtreeproblemingraphtheory.Asaresult,themain-beamintensityoftheinterferometerbecame1.6timesonaverage.
[发布日期] [发布机构]
[效力级别] [学科分类] 天文学(综合)
[关键词] "graph theory";"instrumentation: interferometers";"methods: data analysis";surveys [时效性]
