Study and development of programming topologies in FPGA for the reduction and analysis of data from heterodyne instruments for radio astronomy

Jael Rojas; Daniel Ferrusca; Arturo Gomez; Eduardo Ibarra-Medel

doi:10.1117/12.2628265

31 August 2022 Study and development of programming topologies in FPGA for the reduction and analysis of data from heterodyne instruments for radio astronomy

Jael Rojas , Daniel Ferrusca, Arturo Gomez, Eduardo Ibarra-Medel

Author Affiliations +

Proceedings Volume 12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI; 121902A (2022) https://doi.org/10.1117/12.2628265
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

Topologies of programming implemented in FPGAs are currently being developed with a combination of techniques to properly take advantage of hardware resources and maximize their capabilities. In this document we present a hardware architecture for real-time computation of FPGAs and readout applied to spectrometers in radio astronomy. The proposed architecture has been verified on Xilinx ZYNQ 7000 and Virtex-6 (XC6VSX475T1FFG1759C), which can run at a frequency up to 6 GHz and 4 GHz respectively with high accuracy. We present two spectrometers developed in FPGA’s architectures using polyphase filters and FFT on ROACH-2 and decimator with polyphase filters on Zedboard ZYNQ 7000. The spectrometer works continuously and has a remarkable total bandwidth of 200 MHz on ROACH2 and 23 MHz on ZYNQ 7000, resolved into 4096 channels. The firmware on ZYNQ board offer better resolution of 5.6 kHz than ROACH-2 of 49 kHz. DSP48 is the resource most used on ROACH, due to the firmware includes an FFT stage. We discuss the advantages and drawbacks of each approach.

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Jael Rojas , Daniel Ferrusca, Arturo Gomez, and Eduardo Ibarra-Medel "Study and development of programming topologies in FPGA for the reduction and analysis of data from heterodyne instruments for radio astronomy", Proc. SPIE 12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI, 121902A (31 August 2022); https://doi.org/10.1117/12.2628265

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