Not sure. Just lock to one of them and another as interference. If interference after loop filtering is small (out of loop bandwidth) it can keep locking.
在 2019年1月11日星期五，wu jo <john.wu....@hotmail.com> 写道： > Hi, > thanks. i think i have figured out it from the source. i think this block > only works for a clean single frequency. if there are 2 or more frequency > in the input signal it will not detect any of them, right? > ------------------------------ > *发件人:* WarMonkey <luoshumym...@gmail.com> > *发送时间:* 2019年1月11日 3:24 > *收件人:* wu jo > *抄送:* discuss-gnuradio@gnu.org > *主题:* Re: [Discuss-gnuradio] anyone know what is the theory of the > implementation of pll_freqdet_cf > > http://ricesimulink.groups.et.byu.net/pll.phtml > > > 在 2019年1月8日星期二，wu jo <john.wu....@hotmail.com> 写道： > > Hi ALL, > I am reading a block that using pll_freqdet_cf. it said pll_freqdet_cf > detect a frequency then lock to it. but what is the theory of the > impletation of that? anyone can share the knowledge? > > Best Regards > >
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