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

TL;DR

This paper presents a newly developed ground-based IPS observation system installed on the Miyun 50m radio telescope, capable of monitoring solar wind speed and scintillation index through dual-frequency measurements, with successful initial observations.

Contribution

Introduction of a novel dual-frequency IPS observation system on a 50m radio telescope, including design, calibration, and initial successful observations.

Findings

System sensitivity exceeds 0.3Jy for IPS observation.

Successfully observed sources 3C273B and 3C279.

Demonstrated capability for IPS monitoring of solar wind.

Abstract

Ground-based observation of Interplanetary Scintillation(IPS) is an important approach of monitoring solar wind. A ground-based IPS observation system is newly implemented on 50m radio telescope, Miyun station, National Astronomical Observatories, Chinese Academy of Sciences(NAOC). This observation system is constructed for purpose of observing the solar wind speed and scintillation index by using the normalized cross-spectrum of simultaneous dual-frequency IPS measurement. The system consists of a universal dual-frequency front-end and a dual-channel multi-function back-end specially designed for IPS. After careful calibration and testing, IPS observations on source 3C273B and 3C279 are successfully carried out. The preliminary observation results show that this newly developed observation system is capable of doing IPS observation.The system sensitivity for IPS observation can reach over 0.3Jy in terms of IPS polarization correlator with 4MHz bandwidth and 2s integration time.