diff options
Diffstat (limited to 'gr-noaa/apps/hrpt_demod.py')
| -rwxr-xr-x | gr-noaa/apps/hrpt_demod.py | 76 |
1 files changed, 55 insertions, 21 deletions
diff --git a/gr-noaa/apps/hrpt_demod.py b/gr-noaa/apps/hrpt_demod.py index 38d031686..38b4b2fe3 100755 --- a/gr-noaa/apps/hrpt_demod.py +++ b/gr-noaa/apps/hrpt_demod.py @@ -2,9 +2,10 @@ ################################################## # Gnuradio Python Flow Graph # Title: Hrpt Demod -# Generated: Sun Nov 8 10:41:08 2009 +# Generated: Thu Oct 27 13:51:59 2011 ################################################## +from gnuradio import digital from gnuradio import eng_notation from gnuradio import gr from gnuradio import noaa @@ -31,7 +32,7 @@ class hrpt_demod(gr.top_block): # Variables ################################################## self.sym_rate = sym_rate = 600*1109 - self.sample_rate = sample_rate = 64e6/decim + self.sample_rate = sample_rate = 4e6 self.sps = sps = sample_rate/sym_rate self.max_clock_offset = max_clock_offset = 100e-6 self.max_carrier_offset = max_carrier_offset = 2*math.pi*100e3/sample_rate @@ -40,71 +41,104 @@ class hrpt_demod(gr.top_block): ################################################## # Blocks ################################################## - self.agc = gr.agc_cc(1e-5, 1.0, 1.0/32768.0, 1.0) - self.cs2cf = gr.interleaved_short_to_complex() - self.decoder = noaa.hrpt_decoder(True,False) - self.file_source = gr.file_source(gr.sizeof_short*1, input_filename, False) - self.gr_binary_slicer_fb_0 = gr.binary_slicer_fb() - self.gr_clock_recovery_mm_xx_0 = gr.clock_recovery_mm_ff(sps/2.0, clock_alpha**2/4.0, 0.5, clock_alpha, max_clock_offset) - self.gr_file_sink_0 = gr.file_sink(gr.sizeof_short*1, output_filename) - self.gr_moving_average_xx_0 = gr.moving_average_ff(hs, 1.0/hs, 4000) - self.noaa_hrpt_deframer_0 = noaa.hrpt_deframer() self.pll = noaa.hrpt_pll_cf(pll_alpha, pll_alpha**2/4.0, max_carrier_offset) + self.noaa_hrpt_deframer_0 = noaa.hrpt_deframer() + self.gr_moving_average_xx_0 = gr.moving_average_ff(hs, 1.0/hs, 4000) + self.gr_file_sink_0 = gr.file_sink(gr.sizeof_short*1, output_filename) + self.gr_file_sink_0.set_unbuffered(False) + self.file_source = gr.file_source(gr.sizeof_short*1, input_filename, False) + self.digital_clock_recovery_mm_xx_0 = digital.clock_recovery_mm_ff(sps/2.0, clock_alpha**2/4.0, 0.5, clock_alpha, max_clock_offset) + self.digital_binary_slicer_fb_0 = digital.binary_slicer_fb() + self.decoder = noaa.hrpt_decoder(True,False) + self.cs2cf = gr.interleaved_short_to_complex() + self.agc = gr.agc_cc(1e-5, 1.0, 1.0/32768.0, 1.0) ################################################## # Connections ################################################## self.connect((self.file_source, 0), (self.cs2cf, 0)) - self.connect((self.gr_clock_recovery_mm_xx_0, 0), (self.gr_binary_slicer_fb_0, 0)) - self.connect((self.gr_moving_average_xx_0, 0), (self.gr_clock_recovery_mm_xx_0, 0)) self.connect((self.pll, 0), (self.gr_moving_average_xx_0, 0)) self.connect((self.cs2cf, 0), (self.agc, 0)) self.connect((self.agc, 0), (self.pll, 0)) self.connect((self.noaa_hrpt_deframer_0, 0), (self.gr_file_sink_0, 0)) self.connect((self.noaa_hrpt_deframer_0, 0), (self.decoder, 0)) - self.connect((self.gr_binary_slicer_fb_0, 0), (self.noaa_hrpt_deframer_0, 0)) + self.connect((self.gr_moving_average_xx_0, 0), (self.digital_clock_recovery_mm_xx_0, 0)) + self.connect((self.digital_clock_recovery_mm_xx_0, 0), (self.digital_binary_slicer_fb_0, 0)) + self.connect((self.digital_binary_slicer_fb_0, 0), (self.noaa_hrpt_deframer_0, 0)) + + def get_input_filename(self): + return self.input_filename def set_input_filename(self, input_filename): self.input_filename = input_filename + def get_output_filename(self): + return self.output_filename + def set_output_filename(self, output_filename): self.output_filename = output_filename + def get_decim(self): + return self.decim + def set_decim(self, decim): self.decim = decim - self.set_sample_rate(64e6/self.decim) + + def get_pll_alpha(self): + return self.pll_alpha def set_pll_alpha(self, pll_alpha): self.pll_alpha = pll_alpha self.pll.set_alpha(self.pll_alpha) self.pll.set_beta(self.pll_alpha**2/4.0) + def get_clock_alpha(self): + return self.clock_alpha + def set_clock_alpha(self, clock_alpha): self.clock_alpha = clock_alpha - self.gr_clock_recovery_mm_xx_0.set_gain_omega(self.clock_alpha**2/4.0) - self.gr_clock_recovery_mm_xx_0.set_gain_mu(self.clock_alpha) + self.digital_clock_recovery_mm_xx_0.set_gain_omega(self.clock_alpha**2/4.0) + self.digital_clock_recovery_mm_xx_0.set_gain_mu(self.clock_alpha) + + def get_sym_rate(self): + return self.sym_rate def set_sym_rate(self, sym_rate): self.sym_rate = sym_rate self.set_sps(self.sample_rate/self.sym_rate) + def get_sample_rate(self): + return self.sample_rate + def set_sample_rate(self, sample_rate): self.sample_rate = sample_rate self.set_max_carrier_offset(2*math.pi*100e3/self.sample_rate) self.set_sps(self.sample_rate/self.sym_rate) + def get_sps(self): + return self.sps + def set_sps(self, sps): self.sps = sps self.set_hs(int(self.sps/2.0)) - self.gr_clock_recovery_mm_xx_0.set_omega(self.sps/2.0) + self.digital_clock_recovery_mm_xx_0.set_omega(self.sps/2.0) + + def get_max_clock_offset(self): + return self.max_clock_offset def set_max_clock_offset(self, max_clock_offset): self.max_clock_offset = max_clock_offset + def get_max_carrier_offset(self): + return self.max_carrier_offset + def set_max_carrier_offset(self, max_carrier_offset): self.max_carrier_offset = max_carrier_offset self.pll.set_max_offset(self.max_carrier_offset) + def get_hs(self): + return self.hs + def set_hs(self, hs): self.hs = hs self.gr_moving_average_xx_0.set_length_and_scale(self.hs, 1.0/self.hs) @@ -116,11 +150,11 @@ if __name__ == '__main__': parser.add_option("-o", "--output-filename", dest="output_filename", type="string", default="frames.dat", help="Set frames.dat [default=%default]") parser.add_option("-d", "--decim", dest="decim", type="intx", default=32, - help="Set decim [default=%default]") + help="Set None [default=%default]") parser.add_option("-p", "--pll-alpha", dest="pll_alpha", type="eng_float", default=eng_notation.num_to_str(0.01), - help="Set pll_alpha [default=%default]") + help="Set None [default=%default]") parser.add_option("-s", "--clock-alpha", dest="clock_alpha", type="eng_float", default=eng_notation.num_to_str(0.01), - help="Set clock_alpha [default=%default]") + help="Set None [default=%default]") (options, args) = parser.parse_args() tb = hrpt_demod(input_filename=options.input_filename, output_filename=options.output_filename, decim=options.decim, pll_alpha=options.pll_alpha, clock_alpha=options.clock_alpha) tb.run() |