diff options
Diffstat (limited to 'gr-noaa/apps/file_rx_lrit.py')
| -rwxr-xr-x | gr-noaa/apps/file_rx_lrit.py | 337 |
1 files changed, 337 insertions, 0 deletions
diff --git a/gr-noaa/apps/file_rx_lrit.py b/gr-noaa/apps/file_rx_lrit.py new file mode 100755 index 000000000..9a50631f7 --- /dev/null +++ b/gr-noaa/apps/file_rx_lrit.py @@ -0,0 +1,337 @@ +#!/usr/bin/env python +################################################## +# Gnuradio Python Flow Graph +# Title: LRIT Receiver (from capture file) +# Generated: Wed Dec 16 09:16:13 2009 +################################################## + +from gnuradio import eng_notation +from gnuradio import gr +from gnuradio import window +from gnuradio.eng_option import eng_option +from gnuradio.gr import firdes +from gnuradio.wxgui import fftsink2 +from gnuradio.wxgui import forms +from gnuradio.wxgui import scopesink2 +from grc_gnuradio import wxgui as grc_wxgui +from optparse import OptionParser +import ConfigParser +import os +import wx + +class file_rx_lrit(grc_wxgui.top_block_gui): + + def __init__(self, decim=160): + grc_wxgui.top_block_gui.__init__(self, title="LRIT Receiver (from capture file)") + + ################################################## + # Parameters + ################################################## + self.decim = decim + + ################################################## + # Variables + ################################################## + self.config_filename = config_filename = os.environ['HOME']+'/.gnuradio/config.conf' + self.symbol_rate = symbol_rate = 293e3 + self._saved_gain_mu_config = ConfigParser.ConfigParser() + self._saved_gain_mu_config.read(config_filename) + try: saved_gain_mu = self._saved_gain_mu_config.getfloat('usrp_rx_lrit', 'gain_mu') + except: saved_gain_mu = 0.2 + self.saved_gain_mu = saved_gain_mu + self._saved_costas_alpha_config = ConfigParser.ConfigParser() + self._saved_costas_alpha_config.read(config_filename) + try: saved_costas_alpha = self._saved_costas_alpha_config.getfloat('usrp_rx_lrit', 'costas_alpha') + except: saved_costas_alpha = 0.2 + self.saved_costas_alpha = saved_costas_alpha + self.sample_rate = sample_rate = 64e6/decim + self.sps = sps = sample_rate/symbol_rate + self.gain_mu = gain_mu = saved_gain_mu + self.costas_alpha = costas_alpha = saved_costas_alpha + + ################################################## + # Notebooks + ################################################## + self.displays = wx.Notebook(self.GetWin(), style=wx.NB_TOP) + self.displays.AddPage(grc_wxgui.Panel(self.displays), "USRP RX") + self.displays.AddPage(grc_wxgui.Panel(self.displays), "RRC Filter") + self.displays.AddPage(grc_wxgui.Panel(self.displays), "PLL") + self.displays.AddPage(grc_wxgui.Panel(self.displays), "MM") + self.GridAdd(self.displays, 1, 0, 1, 2) + + ################################################## + # Controls + ################################################## + _gain_mu_sizer = wx.BoxSizer(wx.VERTICAL) + self._gain_mu_text_box = forms.text_box( + parent=self.GetWin(), + sizer=_gain_mu_sizer, + value=self.gain_mu, + callback=self.set_gain_mu, + label="Gain Mu", + converter=forms.float_converter(), + proportion=0, + ) + self._gain_mu_slider = forms.slider( + parent=self.GetWin(), + sizer=_gain_mu_sizer, + value=self.gain_mu, + callback=self.set_gain_mu, + minimum=0, + maximum=0.5, + num_steps=100, + style=wx.SL_HORIZONTAL, + cast=float, + proportion=1, + ) + self.GridAdd(_gain_mu_sizer, 0, 1, 1, 1) + _costas_alpha_sizer = wx.BoxSizer(wx.VERTICAL) + self._costas_alpha_text_box = forms.text_box( + parent=self.GetWin(), + sizer=_costas_alpha_sizer, + value=self.costas_alpha, + callback=self.set_costas_alpha, + label="Costas Alpha", + converter=forms.float_converter(), + proportion=0, + ) + self._costas_alpha_slider = forms.slider( + parent=self.GetWin(), + sizer=_costas_alpha_sizer, + value=self.costas_alpha, + callback=self.set_costas_alpha, + minimum=0, + maximum=0.5, + num_steps=100, + style=wx.SL_HORIZONTAL, + cast=float, + proportion=1, + ) + self.GridAdd(_costas_alpha_sizer, 0, 0, 1, 1) + + ################################################## + # Blocks + ################################################## + self.costas = gr.costas_loop_cc(costas_alpha, (costas_alpha**2)/4.0, 50e-6*sps, -50e-6*sps, 2) + self.costas_spectrum = fftsink2.fft_sink_c( + self.displays.GetPage(2).GetWin(), + baseband_freq=0, + y_per_div=10, + y_divs=10, + ref_level=-15, + ref_scale=2.0, + sample_rate=sample_rate, + fft_size=1024, + fft_rate=30, + average=True, + avg_alpha=None, + title="PLL Spectrum", + peak_hold=False, + win=window.hanning, + ) + self.displays.GetPage(2).GridAdd(self.costas_spectrum.win, 0, 0, 1, 1) + self.costas_spectrum_0 = fftsink2.fft_sink_c( + self.displays.GetPage(3).GetWin(), + baseband_freq=0, + y_per_div=10, + y_divs=10, + ref_level=-15, + ref_scale=2.0, + sample_rate=symbol_rate, + fft_size=1024, + fft_rate=30, + average=True, + avg_alpha=None, + title="Bit Sync Spectrum", + peak_hold=False, + win=window.hanning, + ) + self.displays.GetPage(3).GridAdd(self.costas_spectrum_0.win, 0, 0, 1, 1) + self.costas_waveform = scopesink2.scope_sink_c( + self.displays.GetPage(2).GetWin(), + title="PLL Waveform", + sample_rate=sample_rate, + v_scale=0.5, + v_offset=0, + t_scale=20.0/sample_rate, + ac_couple=False, + xy_mode=False, + num_inputs=1, + ) + self.displays.GetPage(2).GridAdd(self.costas_waveform.win, 1, 0, 1, 1) + self.gr_agc_xx_0 = gr.agc_cc(1e-6, 1.0, 1.0/32767.0, 1.0) + self.gr_clock_recovery_mm_xx_0 = gr.clock_recovery_mm_cc(sps, (gain_mu**2)/4.0, 0.5, gain_mu, 50e-6) + self.gr_file_source_0 = gr.file_source(gr.sizeof_gr_complex*1, "lrit.dat", False) + self.gr_throttle_0 = gr.throttle(gr.sizeof_gr_complex*1, sample_rate) + self.mm_waveform = scopesink2.scope_sink_c( + self.displays.GetPage(3).GetWin(), + title="Constellation", + sample_rate=symbol_rate, + v_scale=0.5, + v_offset=0, + t_scale=20.0/symbol_rate, + ac_couple=False, + xy_mode=True, + num_inputs=1, + ) + self.displays.GetPage(3).GridAdd(self.mm_waveform.win, 1, 0, 1, 1) + self.rrc = gr.fir_filter_ccf(1, firdes.root_raised_cosine( + 1, sample_rate, symbol_rate, 0.25, int(11*sample_rate/symbol_rate))) + self.rrc_spectrum = fftsink2.fft_sink_c( + self.displays.GetPage(1).GetWin(), + baseband_freq=0, + y_per_div=10, + y_divs=10, + ref_level=-15, + ref_scale=2.0, + sample_rate=sample_rate, + fft_size=1024, + fft_rate=30, + average=True, + avg_alpha=None, + title="RRC Spectrum", + peak_hold=False, + win=window.hanning, + ) + self.displays.GetPage(1).GridAdd(self.rrc_spectrum.win, 0, 0, 1, 1) + self.rx_spectrum = fftsink2.fft_sink_c( + self.displays.GetPage(0).GetWin(), + baseband_freq=0, + y_per_div=5, + y_divs=10, + ref_level=50, + ref_scale=2.0, + sample_rate=sample_rate, + fft_size=1024, + fft_rate=15, + average=True, + avg_alpha=None, + title="Baseband Spectrum", + peak_hold=False, + ) + self.displays.GetPage(0).GridAdd(self.rx_spectrum.win, 0, 0, 1, 1) + self.rx_waveform = scopesink2.scope_sink_c( + self.displays.GetPage(0).GetWin(), + title="Baseband Waveform", + sample_rate=sample_rate, + v_scale=0, + v_offset=0, + t_scale=20.0/sample_rate, + ac_couple=False, + xy_mode=False, + num_inputs=1, + ) + self.displays.GetPage(0).GridAdd(self.rx_waveform.win, 1, 0, 1, 1) + self.rx_waveform_0 = scopesink2.scope_sink_c( + self.displays.GetPage(1).GetWin(), + title="RRC Waveform", + sample_rate=sample_rate, + v_scale=0.5, + v_offset=0, + t_scale=20.0/sample_rate, + ac_couple=False, + xy_mode=False, + num_inputs=1, + ) + self.displays.GetPage(1).GridAdd(self.rx_waveform_0.win, 1, 0, 1, 1) + + ################################################## + # Connections + ################################################## + self.connect((self.rrc, 0), (self.rx_waveform_0, 0)) + self.connect((self.rrc, 0), (self.rrc_spectrum, 0)) + self.connect((self.gr_agc_xx_0, 0), (self.rrc, 0)) + self.connect((self.gr_throttle_0, 0), (self.rx_waveform, 0)) + self.connect((self.gr_throttle_0, 0), (self.rx_spectrum, 0)) + self.connect((self.gr_throttle_0, 0), (self.gr_agc_xx_0, 0)) + self.connect((self.gr_file_source_0, 0), (self.gr_throttle_0, 0)) + self.connect((self.rrc, 0), (self.costas, 0)) + self.connect((self.costas, 0), (self.costas_spectrum, 0)) + self.connect((self.costas, 0), (self.costas_waveform, 0)) + self.connect((self.costas, 0), (self.gr_clock_recovery_mm_xx_0, 0)) + self.connect((self.gr_clock_recovery_mm_xx_0, 0), (self.costas_spectrum_0, 0)) + self.connect((self.gr_clock_recovery_mm_xx_0, 0), (self.mm_waveform, 0)) + + def set_decim(self, decim): + self.decim = decim + self.set_sample_rate(64e6/self.decim) + + def set_config_filename(self, config_filename): + self.config_filename = config_filename + self._saved_costas_alpha_config = ConfigParser.ConfigParser() + self._saved_costas_alpha_config.read(self.config_filename) + if not self._saved_costas_alpha_config.has_section('usrp_rx_lrit'): + self._saved_costas_alpha_config.add_section('usrp_rx_lrit') + self._saved_costas_alpha_config.set('usrp_rx_lrit', 'costas_alpha', str(self.costas_alpha)) + self._saved_costas_alpha_config.write(open(self.config_filename, 'w')) + self._saved_gain_mu_config = ConfigParser.ConfigParser() + self._saved_gain_mu_config.read(self.config_filename) + if not self._saved_gain_mu_config.has_section('usrp_rx_lrit'): + self._saved_gain_mu_config.add_section('usrp_rx_lrit') + self._saved_gain_mu_config.set('usrp_rx_lrit', 'gain_mu', str(self.gain_mu)) + self._saved_gain_mu_config.write(open(self.config_filename, 'w')) + + def set_symbol_rate(self, symbol_rate): + self.symbol_rate = symbol_rate + self.set_sps(self.sample_rate/self.symbol_rate) + self.costas_spectrum_0.set_sample_rate(self.symbol_rate) + self.mm_waveform.set_sample_rate(self.symbol_rate) + self.rrc.set_taps(firdes.root_raised_cosine(1, self.sample_rate, self.symbol_rate, 0.25, int(11*self.sample_rate/self.symbol_rate))) + + def set_saved_gain_mu(self, saved_gain_mu): + self.saved_gain_mu = saved_gain_mu + self.set_gain_mu(self.saved_gain_mu) + + def set_saved_costas_alpha(self, saved_costas_alpha): + self.saved_costas_alpha = saved_costas_alpha + self.set_costas_alpha(self.saved_costas_alpha) + + def set_sample_rate(self, sample_rate): + self.sample_rate = sample_rate + self.set_sps(self.sample_rate/self.symbol_rate) + self.rx_spectrum.set_sample_rate(self.sample_rate) + self.rx_waveform.set_sample_rate(self.sample_rate) + self.costas_spectrum.set_sample_rate(self.sample_rate) + self.costas_waveform.set_sample_rate(self.sample_rate) + self.rrc_spectrum.set_sample_rate(self.sample_rate) + self.rx_waveform_0.set_sample_rate(self.sample_rate) + self.rrc.set_taps(firdes.root_raised_cosine(1, self.sample_rate, self.symbol_rate, 0.25, int(11*self.sample_rate/self.symbol_rate))) + + def set_sps(self, sps): + self.sps = sps + self.gr_clock_recovery_mm_xx_0.set_omega(self.sps) + + def set_gain_mu(self, gain_mu): + self.gain_mu = gain_mu + self._gain_mu_slider.set_value(self.gain_mu) + self._gain_mu_text_box.set_value(self.gain_mu) + self.gr_clock_recovery_mm_xx_0.set_gain_omega((self.gain_mu**2)/4.0) + self.gr_clock_recovery_mm_xx_0.set_gain_mu(self.gain_mu) + self._saved_gain_mu_config = ConfigParser.ConfigParser() + self._saved_gain_mu_config.read(self.config_filename) + if not self._saved_gain_mu_config.has_section('usrp_rx_lrit'): + self._saved_gain_mu_config.add_section('usrp_rx_lrit') + self._saved_gain_mu_config.set('usrp_rx_lrit', 'gain_mu', str(self.gain_mu)) + self._saved_gain_mu_config.write(open(self.config_filename, 'w')) + + def set_costas_alpha(self, costas_alpha): + self.costas_alpha = costas_alpha + self._costas_alpha_slider.set_value(self.costas_alpha) + self._costas_alpha_text_box.set_value(self.costas_alpha) + self._saved_costas_alpha_config = ConfigParser.ConfigParser() + self._saved_costas_alpha_config.read(self.config_filename) + if not self._saved_costas_alpha_config.has_section('usrp_rx_lrit'): + self._saved_costas_alpha_config.add_section('usrp_rx_lrit') + self._saved_costas_alpha_config.set('usrp_rx_lrit', 'costas_alpha', str(self.costas_alpha)) + self._saved_costas_alpha_config.write(open(self.config_filename, 'w')) + self.costas.set_alpha(self.costas_alpha) + self.costas.set_beta((self.costas_alpha**2)/4.0) + +if __name__ == '__main__': + parser = OptionParser(option_class=eng_option, usage="%prog: [options]") + parser.add_option("-d", "--decim", dest="decim", type="intx", default=160, + help="Set Decim [default=%default]") + (options, args) = parser.parse_args() + tb = file_rx_lrit(decim=options.decim) + tb.Run(True) + |