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Prototyping Algorithms for Next-Generation Radio Astronomy Receivers Using PXI-Based Instruments and High-Speed Streaming

Figure 1. The Robert C. Byrd Green Bank Telescope (GBT) Used to Test the Prototype DSSM ©NRAO/AUI/NSF

"Using National Instruments data acquisition and data streaming hardware, we developed calibration and correction algorithms for the DSSM and DOMT more efficiently and cost effectively than we could have using a real-time hardware signal processing implementation from the outset. "

- J. Richard Fisher, National Radio Astronomy Observatory

The Challenge:
Developing the next generation of high-performance, compact, integrated radio astronomy receivers using the latest advances in modern digital computing to digitize the signal as close to the antenna feed as possible.

The Solution:
Using National Instruments sampling, data acquisition (DAQ), and data-streaming hardware to capture the outputs from custom-designed microwave front ends and test new algorithms for numerically calibrated sideband separation and polarization isolation with high precision and stability.

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