<?xml version='1.0' encoding='ASCII'?> <flow_graph> <timestamp>Wed Dec 16 09:14:28 2009</timestamp> <block> <key>options</key> <param> <key>id</key> <value>file_rx_lrit</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>title</key> <value>LRIT Receiver (from capture file)</value> </param> <param> <key>author</key> <value></value> </param> <param> <key>description</key> <value></value> </param> <param> <key>window_size</key> <value>4095, 4095</value> </param> <param> <key>generate_options</key> <value>wx_gui</value> </param> <param> <key>category</key> <value>Custom</value> </param> <param> <key>run_options</key> <value>prompt</value> </param> <param> <key>run</key> <value>True</value> </param> <param> <key>realtime_scheduling</key> <value></value> </param> <param> <key>_coordinate</key> <value>(10, 10)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable</key> <param> <key>id</key> <value>symbol_rate</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>293e3</value> </param> <param> <key>_coordinate</key> <value>(347, 10)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable</key> <param> <key>id</key> <value>sps</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>sample_rate/symbol_rate</value> </param> <param> <key>_coordinate</key> <value>(445, 10)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable</key> <param> <key>id</key> <value>config_filename</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>os.environ['HOME']+'/.gnuradio/config.conf'</value> </param> <param> <key>_coordinate</key> <value>(11, 136)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>import</key> <param> <key>id</key> <value>import_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>import</key> <value>import os</value> </param> <param> <key>_coordinate</key> <value>(10, 82)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable</key> <param> <key>id</key> <value>sample_rate</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>64e6/decim</value> </param> <param> <key>_coordinate</key> <value>(249, 10)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>wxgui_fftsink2</key> <param> <key>id</key> <value>rx_spectrum</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>title</key> <value>Baseband Spectrum</value> </param> <param> <key>samp_rate</key> <value>sample_rate</value> </param> <param> <key>baseband_freq</key> <value>0</value> </param> <param> <key>y_per_div</key> <value>5</value> </param> <param> <key>y_divs</key> <value>10</value> </param> <param> <key>ref_level</key> <value>50</value> </param> <param> <key>ref_scale</key> <value>2.0</value> </param> <param> <key>fft_size</key> <value>1024</value> </param> <param> <key>fft_rate</key> <value>15</value> </param> <param> <key>peak_hold</key> <value>False</value> </param> <param> <key>average</key> <value>True</value> </param> <param> <key>avg_alpha</key> <value>0</value> </param> <param> <key>win</key> <value>None</value> </param> <param> <key>win_size</key> <value></value> </param> <param> <key>grid_pos</key> <value>0, 0, 1, 1</value> </param> <param> <key>notebook</key> <value>displays, 0</value> </param> <param> <key>_coordinate</key> <value>(267, 556)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_file_source</key> <param> <key>id</key> <value>gr_file_source_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>file</key> <value>lrit.dat</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>repeat</key> <value>False</value> </param> <param> <key>vlen</key> <value>1</value> </param> <param> <key>_coordinate</key> <value>(79, 729)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_throttle</key> <param> <key>id</key> <value>gr_throttle_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>samples_per_second</key> <value>sample_rate</value> </param> <param> <key>vlen</key> <value>1</value> </param> <param> <key>_coordinate</key> <value>(60, 824)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>wxgui_scopesink2</key> <param> <key>id</key> <value>rx_waveform</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>title</key> <value>Baseband Waveform</value> </param> <param> <key>samp_rate</key> <value>sample_rate</value> </param> <param> <key>v_scale</key> <value>0</value> </param> <param> <key>v_offset</key> <value>0</value> </param> <param> <key>t_scale</key> <value>20.0/sample_rate</value> </param> <param> <key>ac_couple</key> <value>False</value> </param> <param> <key>xy_mode</key> <value>False</value> </param> <param> <key>num_inputs</key> <value>1</value> </param> <param> <key>win_size</key> <value></value> </param> <param> <key>grid_pos</key> <value>1, 0, 1, 1</value> </param> <param> <key>notebook</key> <value>displays, 0</value> </param> <param> <key>_coordinate</key> <value>(267, 915)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable_slider</key> <param> <key>id</key> <value>gain_mu</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>label</key> <value>Gain Mu</value> </param> <param> <key>value</key> <value>saved_gain_mu</value> </param> <param> <key>min</key> <value>0</value> </param> <param> <key>max</key> <value>0.5</value> </param> <param> <key>num_steps</key> <value>100</value> </param> <param> <key>style</key> <value>wx.SL_HORIZONTAL</value> </param> <param> <key>converver</key> <value>float_converter</value> </param> <param> <key>grid_pos</key> <value>0, 1, 1, 1</value> </param> <param> <key>notebook</key> <value></value> </param> <param> <key>_coordinate</key> <value>(478, 91)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>wxgui_fftsink2</key> <param> <key>id</key> <value>costas_spectrum</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>title</key> <value>PLL Spectrum</value> </param> <param> <key>samp_rate</key> <value>sample_rate</value> </param> <param> <key>baseband_freq</key> <value>0</value> </param> <param> <key>y_per_div</key> <value>10</value> </param> <param> <key>y_divs</key> <value>10</value> </param> <param> <key>ref_level</key> <value>-15</value> </param> <param> <key>ref_scale</key> <value>2.0</value> </param> <param> <key>fft_size</key> <value>1024</value> </param> <param> <key>fft_rate</key> <value>30</value> </param> <param> <key>peak_hold</key> <value>False</value> </param> <param> <key>average</key> <value>True</value> </param> <param> <key>avg_alpha</key> <value>0</value> </param> <param> <key>win</key> <value>window.hanning</value> </param> <param> <key>win_size</key> <value></value> </param> <param> <key>grid_pos</key> <value>0, 0, 1, 1</value> </param> <param> <key>notebook</key> <value>displays, 2</value> </param> <param> <key>_coordinate</key> <value>(916, 535)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_clock_recovery_mm_xx</key> <param> <key>id</key> <value>gr_clock_recovery_mm_xx_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>omega</key> <value>sps</value> </param> <param> <key>gain_omega</key> <value>(gain_mu**2)/4.0</value> </param> <param> <key>mu</key> <value>0.5</value> </param> <param> <key>gain_mu</key> <value>gain_mu</value> </param> <param> <key>omega_relative_limit</key> <value>50e-6</value> </param> <param> <key>_coordinate</key> <value>(915, 789)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>wxgui_fftsink2</key> <param> <key>id</key> <value>costas_spectrum_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>title</key> <value>Bit Sync Spectrum</value> </param> <param> <key>samp_rate</key> <value>symbol_rate</value> </param> <param> <key>baseband_freq</key> <value>0</value> </param> <param> <key>y_per_div</key> <value>10</value> </param> <param> <key>y_divs</key> <value>10</value> </param> <param> <key>ref_level</key> <value>-15</value> </param> <param> <key>ref_scale</key> <value>2.0</value> </param> <param> <key>fft_size</key> <value>1024</value> </param> <param> <key>fft_rate</key> <value>30</value> </param> <param> <key>peak_hold</key> <value>False</value> </param> <param> <key>average</key> <value>True</value> </param> <param> <key>avg_alpha</key> <value>0</value> </param> <param> <key>win</key> <value>window.hanning</value> </param> <param> <key>win_size</key> <value></value> </param> <param> <key>grid_pos</key> <value>0, 0, 1, 1</value> </param> <param> <key>notebook</key> <value>displays, 3</value> </param> <param> <key>_coordinate</key> <value>(1160, 539)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>notebook</key> <param> <key>id</key> <value>displays</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>style</key> <value>wx.NB_TOP</value> </param> <param> <key>labels</key> <value>['USRP RX', 'RRC Filter', 'PLL', 'MM']</value> </param> <param> <key>grid_pos</key> <value>1, 0, 1, 2</value> </param> <param> <key>notebook</key> <value></value> </param> <param> <key>_coordinate</key> <value>(15, 206)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable_slider</key> <param> <key>id</key> <value>costas_alpha</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>label</key> <value>Costas Alpha</value> </param> <param> <key>value</key> <value>saved_costas_alpha</value> </param> <param> <key>min</key> <value>0</value> </param> <param> <key>max</key> <value>0.5</value> </param> <param> <key>num_steps</key> <value>100</value> </param> <param> <key>style</key> <value>wx.SL_HORIZONTAL</value> </param> <param> <key>converver</key> <value>float_converter</value> </param> <param> <key>grid_pos</key> <value>0, 0, 1, 1</value> </param> <param> <key>notebook</key> <value></value> </param> <param> <key>_coordinate</key> <value>(338, 90)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>wxgui_scopesink2</key> <param> <key>id</key> <value>costas_waveform</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>title</key> <value>PLL Waveform</value> </param> <param> <key>samp_rate</key> <value>sample_rate</value> </param> <param> <key>v_scale</key> <value>0.5</value> </param> <param> <key>v_offset</key> <value>0</value> </param> <param> <key>t_scale</key> <value>20.0/sample_rate</value> </param> <param> <key>ac_couple</key> <value>False</value> </param> <param> <key>xy_mode</key> <value>False</value> </param> <param> <key>num_inputs</key> <value>1</value> </param> <param> <key>win_size</key> <value></value> </param> <param> <key>grid_pos</key> <value>1, 0, 1, 1</value> </param> <param> <key>notebook</key> <value>displays, 2</value> </param> <param> <key>_coordinate</key> <value>(915, 928)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>wxgui_scopesink2</key> <param> <key>id</key> <value>mm_waveform</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>title</key> <value>Constellation</value> </param> <param> <key>samp_rate</key> <value>symbol_rate</value> </param> <param> <key>v_scale</key> <value>0.5</value> </param> <param> <key>v_offset</key> <value>0</value> </param> <param> <key>t_scale</key> <value>20.0/symbol_rate</value> </param> <param> <key>ac_couple</key> <value>False</value> </param> <param> <key>xy_mode</key> <value>True</value> </param> <param> <key>num_inputs</key> <value>1</value> </param> <param> <key>win_size</key> <value></value> </param> <param> <key>grid_pos</key> <value>1, 0, 1, 1</value> </param> <param> <key>notebook</key> <value>displays, 3</value> </param> <param> <key>_coordinate</key> <value>(1160, 922)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable_config</key> <param> <key>id</key> <value>saved_costas_alpha</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>0.2</value> </param> <param> <key>type</key> <value>real</value> </param> <param> <key>config_file</key> <value>config_filename</value> </param> <param> <key>section</key> <value>'usrp_rx_lrit'</value> </param> <param> <key>option</key> <value>'costas_alpha'</value> </param> <param> <key>writeback</key> <value>costas_alpha</value> </param> <param> <key>_coordinate</key> <value>(251, 244)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable_config</key> <param> <key>id</key> <value>saved_gain_mu</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>0.2</value> </param> <param> <key>type</key> <value>real</value> </param> <param> <key>config_file</key> <value>config_filename</value> </param> <param> <key>section</key> <value>'usrp_rx_lrit'</value> </param> <param> <key>option</key> <value>'gain_mu'</value> </param> <param> <key>writeback</key> <value>gain_mu</value> </param> <param> <key>_coordinate</key> <value>(411, 242)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>parameter</key> <param> <key>id</key> <value>decim</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>label</key> <value>Decim</value> </param> <param> <key>value</key> <value>160</value> </param> <param> <key>type</key> <value>intx</value> </param> <param> <key>short_id</key> <value>d</value> </param> <param> <key>_coordinate</key> <value>(249, 90)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>wxgui_fftsink2</key> <param> <key>id</key> <value>rrc_spectrum</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>title</key> <value>RRC Spectrum</value> </param> <param> <key>samp_rate</key> <value>sample_rate</value> </param> <param> <key>baseband_freq</key> <value>0</value> </param> <param> <key>y_per_div</key> <value>10</value> </param> <param> <key>y_divs</key> <value>10</value> </param> <param> <key>ref_level</key> <value>-15</value> </param> <param> <key>ref_scale</key> <value>2.0</value> </param> <param> <key>fft_size</key> <value>1024</value> </param> <param> <key>fft_rate</key> <value>30</value> </param> <param> <key>peak_hold</key> <value>False</value> </param> <param> <key>average</key> <value>True</value> </param> <param> <key>avg_alpha</key> <value>0</value> </param> <param> <key>win</key> <value>window.hanning</value> </param> <param> <key>win_size</key> <value></value> </param> <param> <key>grid_pos</key> <value>0, 0, 1, 1</value> </param> <param> <key>notebook</key> <value>displays, 1</value> </param> <param> <key>_coordinate</key> <value>(705, 534)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_agc_xx</key> <param> <key>id</key> <value>gr_agc_xx_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>rate</key> <value>1e-6</value> </param> <param> <key>reference</key> <value>1.0</value> </param> <param> <key>gain</key> <value>1.0/32767.0</value> </param> <param> <key>max_gain</key> <value>1.0</value> </param> <param> <key>_coordinate</key> <value>(273, 800)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>wxgui_scopesink2</key> <param> <key>id</key> <value>rx_waveform_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>title</key> <value>RRC Waveform</value> </param> <param> <key>samp_rate</key> <value>sample_rate</value> </param> <param> <key>v_scale</key> <value>0.5</value> </param> <param> <key>v_offset</key> <value>0</value> </param> <param> <key>t_scale</key> <value>20.0/sample_rate</value> </param> <param> <key>ac_couple</key> <value>False</value> </param> <param> <key>xy_mode</key> <value>False</value> </param> <param> <key>num_inputs</key> <value>1</value> </param> <param> <key>win_size</key> <value></value> </param> <param> <key>grid_pos</key> <value>1, 0, 1, 1</value> </param> <param> <key>notebook</key> <value>displays, 1</value> </param> <param> <key>_coordinate</key> <value>(706, 927)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_costas_loop_cc</key> <param> <key>id</key> <value>costas</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>alpha</key> <value>costas_alpha</value> </param> <param> <key>beta</key> <value>(costas_alpha**2)/4.0</value> </param> <param> <key>max_freq</key> <value>50e-6*sps</value> </param> <param> <key>min_freq</key> <value>-50e-6*sps</value> </param> <param> <key>order</key> <value>2</value> </param> <param> <key>_coordinate</key> <value>(706, 792)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>root_raised_cosine_filter</key> <param> <key>id</key> <value>rrc</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>fir_filter_ccf</value> </param> <param> <key>decim</key> <value>1</value> </param> <param> <key>interp</key> <value>1</value> </param> <param> <key>gain</key> <value>1</value> </param> <param> <key>samp_rate</key> <value>sample_rate</value> </param> <param> <key>sym_rate</key> <value>symbol_rate</value> </param> <param> <key>alpha</key> <value>0.25</value> </param> <param> <key>ntaps</key> <value>int(11*sample_rate/symbol_rate)</value> </param> <param> <key>_coordinate</key> <value>(448, 784)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <connection> <source_block_id>rrc</source_block_id> <sink_block_id>rx_waveform_0</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>rrc</source_block_id> <sink_block_id>rrc_spectrum</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>gr_agc_xx_0</source_block_id> <sink_block_id>rrc</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>gr_throttle_0</source_block_id> <sink_block_id>rx_waveform</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>gr_throttle_0</source_block_id> <sink_block_id>rx_spectrum</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>gr_throttle_0</source_block_id> <sink_block_id>gr_agc_xx_0</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>gr_file_source_0</source_block_id> <sink_block_id>gr_throttle_0</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>rrc</source_block_id> <sink_block_id>costas</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>costas</source_block_id> <sink_block_id>costas_spectrum</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>costas</source_block_id> <sink_block_id>costas_waveform</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> 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