[mmaimcal] Re: question about frequency/band switching speeds and rates
MORITA, Koh-Ichiro
morita at nro.nao.ac.jp
Wed Feb 9 00:11:13 EST 2005
Dear Robert,
> This is what we have in the OTF interferometry use case:
>
> ""2. The scheme currenly envisioned for phase tracking is the following
> (D. Emerson):
>
> - We apply, on one of the LO's, the phase and fringe frequency needed to
> track the center of the antenna beam (taken at the center of the
> integration period),
>
> - an additional phase, constant during the integration, as needed to
> obtain a continuous phase at the beginning of the integration.
>
> - this phase value is kept and later subtracted from that of
> visibilities obtained during that integration. This scheme should not
> unneededly restrain the final data rate.""
My understanding is that this phase subraction should be done
in the correlator system. Is it correct?
Do you know whether the specification of eBLC include this
function?
Cheers,
Koh-Ichiro
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