为什么拍频信号的频谱看不见？
求助，为什么看不见拍频信号的频谱🆘 :as2fO$?
激光器扫描区间:1545nm-1555nm oFJx8XU
激光器扫描速度：50hz/s 也就是说扫描速度为500nm/s p 6{8t}
延时光纤：1m | >p?Cm
采集卡速度:2M c+TCC%AJQI
采样点数:40000 2)`4(38
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