<html><head><meta http-equiv="Content-Type" content="text/html charset=big5"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class=""></div><div class="">To generate the new figure, I only changed "FFTSpecRes = 0.5¡¨, which is 100x larger than the previous setting, and corresponding to the duration of 2x10^{-6} sec.</div><div class="">Then the previous trend, ¡§a clear declination in the amplitude (obtained S/N) following the increasing frequency¡¨, has disappeared in the correlation for the baseline of CARMA-SMA and SMA-SMTO.</div><div class=""><br class=""></div><div class="">¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X</div><div class=""><font color="#ff2600" class="">Extensive Problem:</font></div><div class=""><br class=""></div><div class="">One more question is about the zoom-band mode for the correlation.</div><div class="">For example, we applied the zoom-band mode to examine the correlated result specified in a specific range (e.g., 1008-1040 MHz of the center band).</div><div class="">For such a case, we saw the similar trend as we correlate the entire full-band (2 GHz) data with the precise ¡§FFTSepcres¡¨.</div><div class="">(It means that S/N obtained at 4-36 MHz > it obtained at 1008-1040 MHz > it obtained at 2012-2044 MHz).</div><div class="">But in the zoom-band mode, the bandwidth is now 32 MHz, not 2048 MHz.</div><div class="">Or the mechanism to apply the zoom-band mode in correlation is still similar to correlate the full-band data, so I cannot set the FFT resolution too high. </div><div class=""><br class=""></div><div class="">¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X¡X</div><div class=""><font color="#0433ff" class="">Adam¡¦s response:</font></div><div class=""><br class=""></div><div class="">As the name implies, zoom bands "zoom" in on the recorded bands. All the standard signal processing (including the fractional sample correction) is done on the recorded band first. So a zoom band just picks out a segment of the frequency spectrum of a recorded band, including any artifacts that have been introduced in the signal processing up to that point. So zoom bands are subject to the same limitations regarding fractional sample correction as their parent wide bands.</div><div class=""><br class=""></div><div class="">Getting around this would require adding a new filtering capability upstream of the standard station-based processing. It would certainly be possible, and would be nice additional flexibility, but would be quite a bit of work.</div><div class=""><br class=""></div></body></html>