摘要
Digital backends are critical for modern radio interferometers,enabling wideband signal acquisition and flexible data processing.We present the design of a new RFSo C-based backend developed for the Central China Array(CARRY),currently under construction in Hubei,China.The system,built on the RFSo C-xczu47DR platform,supports wideband sampling of eight inputs at 1 GSPS with polyphase filter bank processing,channel equalization,and high-speed 100 Gb E data transmission.Experimental results confirm reliable synchronization,high linearity,and stable spectral processing.This design provides CARRY with a high-performance,scalable,and cost-efficient reference architecture that can be extended to other radio interferometer arrays.
基金
supported by the National Natural Science Foundation of China(NSFC)under Program Nos.11988101 and 12203069
support from the National SKA Program of China(2022SKA0130100)
the Basic Research Project of Central China Normal University
the Hubei QB Project
the CAS Youth Interdisciplinary Team
the Foundation of Guizhou Provincial Education Department for grant No.KY(2023)059。
