Digital whitening and re-quantization in radio telescopes introduce subtle systematic spectral distortions that affect 21 cm cosmology observations.
J., Murphy, E
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abstract
The next-generation Very Large Array (ngVLA) is an astronomical observatory planned to operate at centimeter wavelengths (25 to 0.26 centimeters, corresponding to a frequency range extending from 1.2 GHz to 116 GHz). The observatory will be a synthesis radio telescope constituted of approximately 214 reflector antennas each of 18 meters diameter, operating in a phased or interferometric mode. We provide an overview of the current system design of the ngVLA. The concepts for major system elements such as the antenna, receiving electronics, and central signal processing are presented. We also describe the major development activities that are presently underway to advance the design.
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astro-ph.IM 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
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Systematic Spectral Distortion from Digital Whitening in Radio Telescopes and Implications for 21 cm Cosmology
Digital whitening and re-quantization in radio telescopes introduce subtle systematic spectral distortions that affect 21 cm cosmology observations.