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From: | Marcus D. Leech |
Subject: | Re: GRC max sample rate |
Date: | Sun, 26 Jul 2020 15:49:51 -0400 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 |
On 07/26/2020 03:15 PM, Koyel Das
(Vehere) wrote:
Thinking about it for 30 seconds, I don't think it would have any impact on perceived doppler shift--it's a one-time phase diference only. So distance estimates would be affected, but not doppler or doppler derivative, I think. In radio astronomy interferometry, if the phases aren't aligned, then the "phase center" of the array isn't where you think it is, and that can lead to sky-position estimates being a bit wrong. If your science goals don't include high-quality position estimates, then as long as the two sides "march together" (that is, are long-term phase-coherent, without necessarily having a zero phase offset), then you can still do science. |
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