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54 lines
2.0 KiB
54 lines
2.0 KiB
#!/usr/bin/env python |
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# -*- coding: utf-8 -*- |
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# |
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# Copyright 2017 <+YOU OR YOUR COMPANY+>. |
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# |
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# This is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 3, or (at your option) |
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# any later version. |
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# |
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# This software is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this software; see the file COPYING. If not, write to |
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# the Free Software Foundation, Inc., 51 Franklin Street, |
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# Boston, MA 02110-1301, USA. |
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# |
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import numpy as np |
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from gnuradio import gr |
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import pmt,code |
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class pilot_quality(gr.sync_block): |
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""" |
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docstring for block pilot_quality |
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""" |
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def __init__(self, debug,samp_rate,fft_len,carrier_freq,gap_width,msg_adr): |
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gr.sync_block.__init__(self, |
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name="pilot_quality", |
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in_sig=[(np.float32,fft_len)], |
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out_sig=None) |
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#self.carrier_width=1 |
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self.debug=debug |
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self.message_port_register_out(pmt.intern('out')) |
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self.carrier_index=int(carrier_freq*fft_len/float(samp_rate)) |
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self.lowbound_index=int((carrier_freq-gap_width)*fft_len/float(samp_rate)) |
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self.highbound_index=int((carrier_freq+gap_width)*fft_len/float(samp_rate)) |
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def work(self, input_items, output_items): |
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in0 = input_items[0] |
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# <+signal processing here+> |
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for i,in_vec in enumerate(in0): |
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surrounding=np.mean(in_vec[self.lowbound_index:self.highbound_index]) |
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carrier=np.mean(in_vec[self.carrier_index-1:self.carrier_index+1]) |
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#code.interact(local=locals()) |
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strength=abs(carrier-surrounding) |
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if self.debug: |
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print("strength: %f,carrier: %f, around:%f"%(strength,carrier,surrounding)) |
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return len(input_items[0]) |
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