Experiences with the design and construction of wideband spectral line and pulsar instrumentation with CASPER hardware and software: the digital backend system

John M. Ford; Richard M. Prestage; Marty Bloss

doi:10.1117/12.2056883

18 July 2014 Experiences with the design and construction of wideband spectral line and pulsar instrumentation with CASPER hardware and software: the digital backend system

John M. Ford, Richard M. Prestage, Marty Bloss

Author Affiliations +

Proceedings Volume 9152, Software and Cyberinfrastructure for Astronomy III; 915218 (2014) https://doi.org/10.1117/12.2056883
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

NRAO recently built the Digital Backend System (DIBAS) for the Shanghai Astronomical Observatory's (SHAO) 65 meter radio telescope. The machine was created from the design of the VErsatile GBT Astronomical Spec- trometer (VEGAS) by adding pulsar search and timing modes to complement the VEGAS spectral line modes. Together the pulsar and spectral line modes cover all anticipated science requirements for the 65 meter, except VLBI. This paper introduces the radio telescope backend and explores the project management challenges of the project. These include managing the high level of reuse of existing FPGA designs, an aggressive schedule for the project, and the software design constraints imposed on the project.

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John M. Ford, Richard M. Prestage, and Marty Bloss "Experiences with the design and construction of wideband spectral line and pulsar instrumentation with CASPER hardware and software: the digital backend system", Proc. SPIE 9152, Software and Cyberinfrastructure for Astronomy III, 915218 (18 July 2014); https://doi.org/10.1117/12.2056883

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