EVLA Memo 160 More WIDAR spectral dynamic range tests
نویسنده
چکیده
This is a continuation of investigation of the spectral dynamic range achievable with the WIDAR correlator. Previous investigations (EVLA Memo 148) were limited by the so-called “splatter” phenomena, which is now understood and avoidable (EVLA Memo 157). This investigation is also stimulated by a desire to evaluate the “correlator chip beat artifact” seen in simulations (NRC-EVLA Memo 32) and to measure the isolation between WIDAR subbands.
منابع مشابه
EVLA Memo 148 WIDAR anti-aliasing and spectral dynamic range test
WIDAR, the correlator being commissioned as part of the EVLA upgrade, allows observing with multiple simultaneous subbands. Intrinsically WIDAR produces many channels within each subband. WIDAR aims to be a system with high spectral purity. In particular, WIDAR aims to produce low non-ideal in-band response of a spectral feature, low aliasing of a spectral feature from one subband to another, a...
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