A digital correlation receiver for the Mingantu Spectral Radioheliograph. (2019)

• Record Type: Journal Article
• Authors: Liu, Fei; Yan, Yihua; Wang, Wei; Tan, Baolin; Chen, Linjie; Qu, Chunhui; Li, Jutao
• Is Part Of: Publications of the Astronomical Society of Australia. Volume 36(2019)
• Publication Date: 2019
• Subjects: ADC, -- digital correlation receiver, -- FPGA, -- MUSER, -- PFC, -- radioheliograph; Astronomy -- Periodicals; Southern sky (Astronomy) -- Periodicals; Astrophysics -- Periodicals; Periodicals; 520.5
• DOI: 10.1017/pasa.2019.35
• Languages: English
• ISSNs: 1323-3580

Abstract

Abstract: We have designed and developed the digital correlation receiver for Mingantu Spectral Radioheliograph (MUSER). The MUSER digital correlation receiver is implemented to sample, channelise, and correlate a 400 MHz wide solar radio signal of 40-antenna output from MUSER intermediate-frequency array and 60-antenna output from MUSER high-frequency array. The polyphase filter channeliser is used for wide-band channelisation and proved to be efficient to realise narrow-band filtering ( ${\sim}25$ MHz) in a high-speed digital signal-processing pipeline (sampling rate ${\sim}1$ Gsps). All modules of the digital correlation receiver are implemented on FPGA-based hardware and integrated via high-speed backplane, which makes a well-performed and economical correlator system for MUSER array. The future upgrade is also addressed including spectral resolution enhancement and radio-frequency-interference excision.