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Signal Processing for Aperture Arrays

This document details the signal processing architecture for the AAVS1, featuring 256 antenna elements distributed across four stations with 64 elements each. It outlines the setup of correlator stations, receiver boards, and digital processing boards with X and Y polarized antennas. Key specifications include ADU functionality from 400-800 MHz and dual ADCs with a maximum frequency of 1 GHz. The integration is expected by January 2012. Necessary adjustments include the removal of ADU filters and increased sampling bandwidth, enhancing the processing capabilities of the correlator.

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Signal Processing for Aperture Arrays

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  1. Signal Processing for Aperture Arrays

  2. AAVS1 • 256 antenna elementsdistributed over • 4 stations • 64 elementseach

  3. AAVS1 Setup 64 elements Station 1 Station 2 Station 3 Station 4 Correlator

  4. Station architecture Receiver board Digital processing board X pol. Antennas Y pol. Antennas Architecture: ADCs centrally

  5. APERTIF Hardware ADU UniBoard Expectedintegration date: January 2012

  6. APERTIF Numbers • ADU • 400-800 MHz (canbemodified) • Dual ADC withfmax=1 GHz • 8 bit • UniBoard • 16 signalpaths • Input bandwidth: 400 MHz • Output bandwidth: 40 beams of 300 MHz

  7. Requiredchangesfor AAVS1 • ADU filter removed • Sampling @ 1 GHz • UniBoard input bandwidth 1 GHz

  8. Correlator Canbe a set of single UniBoards, eachdoing a part of the band

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