IPS Observation System for Miyun 50m Radio Telescope and Its Acceptance Observation

摘要

Ground-based observation of Interplanetary Scintillation(IPS) is an importantapproach of monitoring solar wind. A ground-based IPS observation system isnewly implemented on 50m radio telescope, Miyun station, National AstronomicalObservatories, Chinese Academy of Sciences(NAOC). This observation system isconstructed for purpose of observing the solar wind speed and scintillationindex by using the normalized cross-spectrum of simultaneous dual-frequency IPSmeasurement. The system consists of a universal dual-frequency front-end and adual-channel multi-function back-end specially designed for IPS. After carefulcalibration and testing, IPS observations on source 3C273B and 3C279 aresuccessfully carried out. The preliminary observation results show that thisnewly developed observation system is capable of doing IPS observation.Thesystem sensitivity for IPS observation can reach over 0.3Jy in terms of IPSpolarization correlator with 4MHz bandwidth and 2s integration time.