A digital correlation receiver for the Mingantu Spectral Radioheliograph

被引：8
|
作者：
Liu, Fei [1 ]
Yan, Yihua [1 ,2 ]
Wang, Wei [1 ]
Tan, Baolin [1 ,2 ]
Chen, Linjie [1 ]
Qu, Chunhui [3 ]
Li, Jutao [3 ]
机构：
[1] Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100101, Peoples R China
[2] Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
[3] Chinese Acad Sci, Aerosp Informat Res Inst, Beijing 100094, Peoples R China
来源：
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA | 2019年 / 36卷
关键词：
ADC; digital correlation receiver; FPGA; MUSER; PFC; radioheliograph;
D O I：
10.1017/pasa.2019.35
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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 (similar to 25 MHz) in a high-speed digital signal-processing pipeline (sampling rate similar to 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.
引用
收藏
页数：10
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