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Code Issues Releases Wiki Activity

Improve sensitivity

This commit is contained in:
Patrick Dohmen 2018-05-18 08:53:12 +02:00 committed by Manolis Surligas
parent 9d41d8986c
commit dbfb6e6562
2 changed files with 515 additions and 56 deletions
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511
apps/flowgraphs/cw_decoder.grc
View File

@ -214,7 +214,70 @@ TX sampling rate</value>
</param>
<param>
<key>value</key>
<value>5</value>
<value>int(samp_rate_rx/100e3)</value>
</param>
</block>
<block>
<key>analog_agc2_xx</key>
<param>
<key>attack_rate</key>
<value>0.01</value>
</param>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>decay_rate</key>
<value>0.001</value>
</param>
<param>
<key>_enabled</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(1408, 556)</value>
</param>
<param>
<key>_rotation</key>
<value>180</value>
</param>
<param>
<key>gain</key>
<value>0.0</value>
</param>
<param>
<key>id</key>
<value>analog_agc2_xx_0_0</value>
</param>
<param>
<key>max_gain</key>
<value>65536</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>reference</key>
<value>0.015</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
</block>
<block>
@ -237,7 +300,7 @@ TX sampling rate</value>
</param>
<param>
<key>_coordinate</key>
<value>(983, 275)</value>
<value>(960, 348)</value>
</param>
<param>
<key>_rotation</key>
@ -268,6 +331,69 @@ TX sampling rate</value>
<value>0</value>
</param>
</block>
<block>
<key>analog_sig_source_x</key>
<param>
<key>amp</key>
<value>1</value>
</param>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>freq</key>
<value>bfo_freq</value>
</param>
<param>
<key>_coordinate</key>
<value>(1408, 668)</value>
</param>
<param>
<key>_rotation</key>
<value>180</value>
</param>
<param>
<key>id</key>
<value>analog_sig_source_x_0</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>offset</key>
<value>0</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>samp_rate</key>
<value>audio_samp_rate</value>
</param>
<param>
<key>waveform</key>
<value>analog.GR_COS_WAVE</value>
</param>
</block>
<block>
<key>parameter</key>
<param>
@ -354,6 +480,51 @@ TX sampling rate</value>
<value>satnogs.not_set_rx_bb_gain</value>
</param>
</block>
<block>
<key>parameter</key>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value>The bfo_freq shifts the carrier from 0 Hz to a
frequency that corresponds to the CW audio
tone. This tone is typically 1 kHz.</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>_coordinate</key>
<value>(1408, 788)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>bfo_freq</value>
</param>
<param>
<key>label</key>
<value></value>
</param>
<param>
<key>short_id</key>
<value></value>
</param>
<param>
<key>type</key>
<value>eng_float</value>
</param>
<param>
<key>value</key>
<value>1e3</value>
</param>
</block>
<block>
<key>blocks_complex_to_mag_squared</key>
<param>
@ -374,7 +545,7 @@ TX sampling rate</value>
</param>
<param>
<key>_coordinate</key>
<value>(1374, 295)</value>
<value>(1168, 368)</value>
</param>
<param>
<key>_rotation</key>
@ -417,11 +588,11 @@ TX sampling rate</value>
</param>
<param>
<key>_coordinate</key>
<value>(1070, 159)</value>
<value>(920, 608)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
<value>180</value>
</param>
<param>
<key>id</key>
@ -440,6 +611,112 @@ TX sampling rate</value>
<value>1</value>
</param>
</block>
<block>
<key>blocks_moving_average_xx</key>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>_coordinate</key>
<value>(1400, 348)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>blocks_moving_average_xx_0</value>
</param>
<param>
<key>length</key>
<value>300</value>
</param>
<param>
<key>max_iter</key>
<value>4000</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>scale</key>
<value>1</value>
</param>
<param>
<key>type</key>
<value>float</value>
</param>
</block>
<block>
<key>blocks_multiply_xx</key>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>_coordinate</key>
<value>(1264, 592)</value>
</param>
<param>
<key>_rotation</key>
<value>180</value>
</param>
<param>
<key>id</key>
<value>blocks_multiply_xx_0</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>num_inputs</key>
<value>2</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
</block>
<block>
<key>parameter</key>
<param>
@ -667,7 +944,7 @@ TX sampling rate</value>
</param>
<param>
<key>comment</key>
<value></value>
<value>Output samplerate: 500k / 5 = 100k</value>
</param>
<param>
<key>affinity</key>
@ -683,7 +960,7 @@ TX sampling rate</value>
</param>
<param>
<key>_coordinate</key>
<value>(518, 271)</value>
<value>(520, 188)</value>
</param>
<param>
<key>_rotation</key>
@ -918,7 +1195,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>comment</key>
<value></value>
<value>Output samplerate: 100k / 5 = 20k</value>
</param>
<param>
<key>affinity</key>
@ -942,7 +1219,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>_coordinate</key>
<value>(765, 247)</value>
<value>(768, 284)</value>
</param>
<param>
<key>_rotation</key>
@ -993,7 +1270,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>comment</key>
<value></value>
<value>Output samplerate: 20k / 4 = 5k</value>
</param>
<param>
<key>affinity</key>
@ -1013,15 +1290,15 @@ we shift the LO a little further</value>
</param>
<param>
<key>type</key>
<value>fir_filter_ccf</value>
<value>fir_filter_fff</value>
</param>
<param>
<key>_coordinate</key>
<value>(1182, 247)</value>
<value>(1584, 420)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
<value>180</value>
</param>
<param>
<key>gain</key>
@ -2514,8 +2791,67 @@ we shift the LO a little further</value>
</param>
<param>
<key>comment</key>
<value>Output samplerate: 48k</value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>decim</key>
<value>int((samp_rate_rx/xlating_decimation))</value>
</param>
<param>
<key>_enabled</key>
<value>1</value>
</param>
<param>
<key>fbw</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(864, 76)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>rational_resampler_xxx_0</value>
</param>
<param>
<key>interp</key>
<value>audio_samp_rate</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>taps</key>
<value></value>
</param>
<param>
<key>type</key>
<value>ccc</value>
</param>
</block>
<block>
<key>rational_resampler_xxx</key>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value>Output samplerate: 48k</value>
</param>
<param>
<key>affinity</key>
<value></value>
@ -2534,15 +2870,15 @@ we shift the LO a little further</value>
</param>
<param>
<key>_coordinate</key>
<value>(845, 103)</value>
<value>(1088, 580)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
<value>180</value>
</param>
<param>
<key>id</key>
<value>rational_resampler_xxx_0</value>
<value>rational_resampler_xxx_0_0</value>
</param>
<param>
<key>interp</key>
@ -2745,7 +3081,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>comment</key>
<value></value>
<value>Output samplerate: 500k</value>
</param>
<param>
<key>affinity</key>
@ -2757,7 +3093,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>_coordinate</key>
<value>(303, 263)</value>
<value>(280, 304)</value>
</param>
<param>
<key>_rotation</key>
@ -2788,7 +3124,7 @@ we shift the LO a little further</value>
<key>satnogs_cw_to_symbol</key>
<param>
<key>threshold</key>
<value>0.25</value>
<value>0.75</value>
</param>
<param>
<key>alias</key>
@ -2812,7 +3148,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>_coordinate</key>
<value>(1366, 391)</value>
<value>(1336, 460)</value>
</param>
<param>
<key>_rotation</key>
@ -2839,6 +3175,57 @@ we shift the LO a little further</value>
<value>wpm</value>
</param>
</block>
<block>
<key>satnogs_doppler_correction_cc</key>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>corrections_per_sec</key>
<value>1000</value>
</param>
<param>
<key>_enabled</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(288, 192)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>satnogs_doppler_correction_cc_0</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>sampling_rate</key>
<value>samp_rate_rx</value>
</param>
<param>
<key>target_freq</key>
<value>rx_freq</value>
</param>
</block>
<block>
<key>satnogs_frame_file_sink</key>
<param>
@ -2859,7 +3246,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>_coordinate</key>
<value>(903, 403)</value>
<value>(720, 444)</value>
</param>
<param>
<key>_rotation</key>
@ -2906,7 +3293,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>_coordinate</key>
<value>(1070, 83)</value>
<value>(1144, 140)</value>
</param>
<param>
<key>_rotation</key>
@ -2945,7 +3332,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>_coordinate</key>
<value>(1142, 411)</value>
<value>(952, 444)</value>
</param>
<param>
<key>_rotation</key>
@ -2996,11 +3383,11 @@ we shift the LO a little further</value>
</param>
<param>
<key>_coordinate</key>
<value>(1246, 139)</value>
<value>(760, 588)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
<value>180</value>
</param>
<param>
<key>id</key>
@ -3071,7 +3458,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>interval</key>
<value>1000</value>
<value>50</value>
</param>
</block>
<block>
@ -3094,7 +3481,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>_coordinate</key>
<value>(933, 490)</value>
<value>(752, 508)</value>
</param>
<param>
<key>_rotation</key>
@ -3149,7 +3536,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>_coordinate</key>
<value>(647, 23)</value>
<value>(1144, 12)</value>
</param>
<param>
<key>_rotation</key>
@ -3169,7 +3556,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>samp_rate</key>
<value>(samp_rate_rx/xlating_decimation)</value>
<value>audio_samp_rate</value>
</param>
</block>
<block>
@ -3344,15 +3731,27 @@ we shift the LO a little further</value>
<value>20</value>
</param>
</block>
<connection>
<source_block_id>analog_agc2_xx_0_0</source_block_id>
<sink_block_id>blocks_multiply_xx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>1</sink_key>
</connection>
<connection>
<source_block_id>analog_pll_carriertracking_cc_0</source_block_id>
<sink_block_id>low_pass_filter_0_0</sink_block_id>
<sink_block_id>blocks_complex_to_mag_squared_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>analog_sig_source_x_0</source_block_id>
<sink_block_id>blocks_multiply_xx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>blocks_complex_to_mag_squared_0</source_block_id>
<sink_block_id>satnogs_cw_to_symbol_0</sink_block_id>
<sink_block_id>blocks_moving_average_xx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
@ -3362,6 +3761,18 @@ we shift the LO a little further</value>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>blocks_moving_average_xx_0</source_block_id>
<sink_block_id>low_pass_filter_0_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>blocks_multiply_xx_0</source_block_id>
<sink_block_id>rational_resampler_xxx_0_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>freq_xlating_fir_filter_xxx_0</source_block_id>
<sink_block_id>low_pass_filter_0</sink_block_id>
@ -3370,7 +3781,13 @@ we shift the LO a little further</value>
</connection>
<connection>
<source_block_id>freq_xlating_fir_filter_xxx_0</source_block_id>
<sink_block_id>satnogs_waterfall_sink_0</sink_block_id>
<sink_block_id>rational_resampler_xxx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>low_pass_filter_0</source_block_id>
<sink_block_id>analog_agc2_xx_0_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
@ -3380,15 +3797,9 @@ we shift the LO a little further</value>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>low_pass_filter_0</source_block_id>
<sink_block_id>rational_resampler_xxx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>low_pass_filter_0_0</source_block_id>
<sink_block_id>blocks_complex_to_mag_squared_0</sink_block_id>
<sink_block_id>satnogs_cw_to_symbol_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
@ -3400,13 +3811,19 @@ we shift the LO a little further</value>
</connection>
<connection>
<source_block_id>rational_resampler_xxx_0</source_block_id>
<sink_block_id>blocks_complex_to_real_0</sink_block_id>
<sink_block_id>satnogs_iq_sink_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>rational_resampler_xxx_0</source_block_id>
<sink_block_id>satnogs_iq_sink_0</sink_block_id>
<sink_block_id>satnogs_waterfall_sink_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>rational_resampler_xxx_0_0</source_block_id>
<sink_block_id>blocks_complex_to_real_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
@ -3422,6 +3839,12 @@ we shift the LO a little further</value>
<source_key>out</source_key>
<sink_key>in</sink_key>
</connection>
<connection>
<source_block_id>satnogs_doppler_correction_cc_0</source_block_id>
<sink_block_id>freq_xlating_fir_filter_xxx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>satnogs_morse_decoder_0</source_block_id>
<sink_block_id>satnogs_frame_file_sink_0_0</sink_block_id>
@ -3440,4 +3863,10 @@ we shift the LO a little further</value>
<source_key>freq</source_key>
<sink_key>freq</sink_key>
</connection>
<connection>
<source_block_id>satnogs_tcp_rigctl_msg_source_0</source_block_id>
<sink_block_id>satnogs_doppler_correction_cc_0</sink_block_id>
<source_key>freq</source_key>
<sink_key>freq</sink_key>
</connection>
</flow_graph>

60
apps/flowgraphs/satnogs_cw_decoder.py
View File

@ -5,9 +5,10 @@
# Title: CW Decoder
# Author: Manolis Surligas (surligas@gmail.com)
# Description: A CW (Morse) Decoder
# Generated: Sun Mar 25 17:48:02 2018
# Generated: Tue May 15 22:58:51 2018
##################################################
from gnuradio import analog
from gnuradio import blocks
from gnuradio import eng_notation
@ -24,7 +25,7 @@ import time
class satnogs_cw_decoder(gr.top_block):
def __init__(self, antenna=satnogs.not_set_antenna, bb_gain=satnogs.not_set_rx_bb_gain, decoded_data_file_path='/tmp/.satnogs/data/data', dev_args=satnogs.not_set_dev_args, doppler_correction_per_sec=1000, enable_iq_dump=0, file_path='test.txt', if_gain=satnogs.not_set_rx_if_gain, iq_file_path='/tmp/iq.dat', lo_offset=100e3, ppm=0, rf_gain=satnogs.not_set_rx_rf_gain, rigctl_port=4532, rx_freq=100e6, rx_sdr_device='usrpb200', udp_IP='127.0.0.1', udp_port=16887, waterfall_file_path='/tmp/waterfall.dat', wpm=20):
def __init__(self, antenna=satnogs.not_set_antenna, bb_gain=satnogs.not_set_rx_bb_gain, bfo_freq=1e3, decoded_data_file_path='/tmp/.satnogs/data/data', dev_args=satnogs.not_set_dev_args, doppler_correction_per_sec=1000, enable_iq_dump=0, file_path='test.txt', if_gain=satnogs.not_set_rx_if_gain, iq_file_path='/tmp/iq.dat', lo_offset=100e3, ppm=0, rf_gain=satnogs.not_set_rx_rf_gain, rigctl_port=4532, rx_freq=100e6, rx_sdr_device='usrpb200', udp_IP='127.0.0.1', udp_port=16887, waterfall_file_path='/tmp/waterfall.dat', wpm=20):
gr.top_block.__init__(self, "CW Decoder")
##################################################
@ -32,6 +33,7 @@ class satnogs_cw_decoder(gr.top_block):
##################################################
self.antenna = antenna
self.bb_gain = bb_gain
self.bfo_freq = bfo_freq
self.decoded_data_file_path = decoded_data_file_path
self.dev_args = dev_args
self.doppler_correction_per_sec = doppler_correction_per_sec
@ -54,7 +56,7 @@ class satnogs_cw_decoder(gr.top_block):
# Variables
##################################################
self.samp_rate_rx = samp_rate_rx = satnogs.hw_rx_settings[rx_sdr_device]['samp_rate']
self.xlating_decimation = xlating_decimation = 5
self.xlating_decimation = xlating_decimation = int(samp_rate_rx/100e3)
self.xlate_filter_taps = xlate_filter_taps = firdes.low_pass(1, samp_rate_rx, 125000, 25000, firdes.WIN_HAMMING, 6.76)
self.lpf_decimation = lpf_decimation = 5
self.audio_samp_rate = audio_samp_rate = 48000
@ -62,21 +64,27 @@ class satnogs_cw_decoder(gr.top_block):
##################################################
# Blocks
##################################################
self.satnogs_waterfall_sink_0 = satnogs.waterfall_sink((samp_rate_rx/xlating_decimation), 0.0, 10, 1024, waterfall_file_path, 1)
self.satnogs_waterfall_sink_0 = satnogs.waterfall_sink(audio_samp_rate, 0.0, 10, 1024, waterfall_file_path, 1)
self.satnogs_udp_msg_sink_0_0 = satnogs.udp_msg_sink(udp_IP, udp_port, 1500)
self.satnogs_tcp_rigctl_msg_source_0 = satnogs.tcp_rigctl_msg_source("127.0.0.1", rigctl_port, False, 1000, 1500)
self.satnogs_tcp_rigctl_msg_source_0 = satnogs.tcp_rigctl_msg_source("127.0.0.1", rigctl_port, False, 50, 1500)
self.satnogs_ogg_encoder_0 = satnogs.ogg_encoder(file_path, audio_samp_rate, 1.0)
self.satnogs_morse_decoder_0 = satnogs.morse_decoder(ord('#'), 3)
self.satnogs_iq_sink_0 = satnogs.iq_sink(16768, iq_file_path, False, enable_iq_dump)
self.satnogs_frame_file_sink_0_0 = satnogs.frame_file_sink(decoded_data_file_path, 0)
self.satnogs_cw_to_symbol_0 = satnogs.cw_to_symbol(samp_rate_rx/xlating_decimation/lpf_decimation/4, 0.25, 0.75, wpm)
self.satnogs_cw_to_symbol_0 = satnogs.cw_to_symbol(samp_rate_rx/xlating_decimation/lpf_decimation/4, 0.75, 0.75, wpm)
self.satnogs_coarse_doppler_correction_cc_0 = satnogs.coarse_doppler_correction_cc(rx_freq, samp_rate_rx)
self.rational_resampler_xxx_0 = filter.rational_resampler_ccc(
self.rational_resampler_xxx_0_0 = filter.rational_resampler_ccc(
interpolation=audio_samp_rate,
decimation=int((samp_rate_rx/xlating_decimation)/lpf_decimation),
taps=None,
fractional_bw=None,
)
self.rational_resampler_xxx_0 = filter.rational_resampler_ccc(
interpolation=audio_samp_rate,
decimation=int((samp_rate_rx/xlating_decimation)),
taps=None,
fractional_bw=None,
)
self.osmosdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + satnogs.handle_rx_dev_args(rx_sdr_device, dev_args) )
self.osmosdr_source_0.set_sample_rate(samp_rate_rx)
self.osmosdr_source_0.set_center_freq(rx_freq - lo_offset, 0)
@ -90,14 +98,19 @@ class satnogs_cw_decoder(gr.top_block):
self.osmosdr_source_0.set_antenna(satnogs.handle_rx_antenna(rx_sdr_device, antenna), 0)
self.osmosdr_source_0.set_bandwidth(samp_rate_rx, 0)
self.low_pass_filter_0_0 = filter.fir_filter_ccf(4, firdes.low_pass(
self.low_pass_filter_0_0 = filter.fir_filter_fff(4, firdes.low_pass(
4, samp_rate_rx/xlating_decimation/lpf_decimation, 100, 100, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_0 = filter.fir_filter_ccf(lpf_decimation, firdes.low_pass(
lpf_decimation, samp_rate_rx/xlating_decimation, 2e3, 1e3, firdes.WIN_HAMMING, 6.76))
self.freq_xlating_fir_filter_xxx_0 = filter.freq_xlating_fir_filter_ccc(xlating_decimation, (xlate_filter_taps), lo_offset, samp_rate_rx)
self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
self.blocks_moving_average_xx_0 = blocks.moving_average_ff(300, 1, 4000)
self.blocks_complex_to_real_0 = blocks.complex_to_real(1)
self.blocks_complex_to_mag_squared_0 = blocks.complex_to_mag_squared(1)
self.analog_sig_source_x_0 = analog.sig_source_c(audio_samp_rate, analog.GR_COS_WAVE, bfo_freq, 1, 0)
self.analog_pll_carriertracking_cc_0 = analog.pll_carriertracking_cc(2*math.pi/100, 2*math.pi*2e3/(samp_rate_rx/xlating_decimation/lpf_decimation), -2*math.pi*2e3/(samp_rate_rx/xlating_decimation/lpf_decimation))
self.analog_agc2_xx_0_0 = analog.agc2_cc(0.01, 0.001, 0.015, 0.0)
self.analog_agc2_xx_0_0.set_max_gain(65536)
##################################################
# Connections
@ -106,17 +119,22 @@ class satnogs_cw_decoder(gr.top_block):
self.msg_connect((self.satnogs_morse_decoder_0, 'out'), (self.satnogs_frame_file_sink_0_0, 'frame'))
self.msg_connect((self.satnogs_morse_decoder_0, 'out'), (self.satnogs_udp_msg_sink_0_0, 'in'))
self.msg_connect((self.satnogs_tcp_rigctl_msg_source_0, 'freq'), (self.satnogs_coarse_doppler_correction_cc_0, 'freq'))
self.connect((self.analog_pll_carriertracking_cc_0, 0), (self.low_pass_filter_0_0, 0))
self.connect((self.blocks_complex_to_mag_squared_0, 0), (self.satnogs_cw_to_symbol_0, 0))
self.connect((self.analog_agc2_xx_0_0, 0), (self.blocks_multiply_xx_0, 1))
self.connect((self.analog_pll_carriertracking_cc_0, 0), (self.blocks_complex_to_mag_squared_0, 0))
self.connect((self.analog_sig_source_x_0, 0), (self.blocks_multiply_xx_0, 0))
self.connect((self.blocks_complex_to_mag_squared_0, 0), (self.blocks_moving_average_xx_0, 0))
self.connect((self.blocks_complex_to_real_0, 0), (self.satnogs_ogg_encoder_0, 0))
self.connect((self.blocks_moving_average_xx_0, 0), (self.low_pass_filter_0_0, 0))
self.connect((self.blocks_multiply_xx_0, 0), (self.rational_resampler_xxx_0_0, 0))
self.connect((self.freq_xlating_fir_filter_xxx_0, 0), (self.low_pass_filter_0, 0))
self.connect((self.freq_xlating_fir_filter_xxx_0, 0), (self.satnogs_waterfall_sink_0, 0))
self.connect((self.freq_xlating_fir_filter_xxx_0, 0), (self.rational_resampler_xxx_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.analog_agc2_xx_0_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.analog_pll_carriertracking_cc_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.rational_resampler_xxx_0, 0))
self.connect((self.low_pass_filter_0_0, 0), (self.blocks_complex_to_mag_squared_0, 0))
self.connect((self.low_pass_filter_0_0, 0), (self.satnogs_cw_to_symbol_0, 0))
self.connect((self.osmosdr_source_0, 0), (self.satnogs_coarse_doppler_correction_cc_0, 0))
self.connect((self.rational_resampler_xxx_0, 0), (self.blocks_complex_to_real_0, 0))
self.connect((self.rational_resampler_xxx_0, 0), (self.satnogs_iq_sink_0, 0))
self.connect((self.rational_resampler_xxx_0, 0), (self.satnogs_waterfall_sink_0, 0))
self.connect((self.rational_resampler_xxx_0_0, 0), (self.blocks_complex_to_real_0, 0))
self.connect((self.satnogs_coarse_doppler_correction_cc_0, 0), (self.freq_xlating_fir_filter_xxx_0, 0))
def get_antenna(self):
@ -133,6 +151,13 @@ class satnogs_cw_decoder(gr.top_block):
self.bb_gain = bb_gain
self.osmosdr_source_0.set_bb_gain(satnogs.handle_rx_bb_gain(self.rx_sdr_device, self.bb_gain), 0)
def get_bfo_freq(self):
return self.bfo_freq
def set_bfo_freq(self, bfo_freq):
self.bfo_freq = bfo_freq
self.analog_sig_source_x_0.set_frequency(self.bfo_freq)
def get_decoded_data_file_path(self):
return self.decoded_data_file_path
@ -252,6 +277,7 @@ class satnogs_cw_decoder(gr.top_block):
def set_samp_rate_rx(self, samp_rate_rx):
self.samp_rate_rx = samp_rate_rx
self.set_xlating_decimation(int(self.samp_rate_rx/100e3))
self.set_xlate_filter_taps(firdes.low_pass(1, self.samp_rate_rx, 125000, 25000, firdes.WIN_HAMMING, 6.76))
self.osmosdr_source_0.set_sample_rate(self.samp_rate_rx)
self.osmosdr_source_0.set_bandwidth(self.samp_rate_rx, 0)
@ -292,6 +318,7 @@ class satnogs_cw_decoder(gr.top_block):
def set_audio_samp_rate(self, audio_samp_rate):
self.audio_samp_rate = audio_samp_rate
self.analog_sig_source_x_0.set_sampling_freq(self.audio_samp_rate)
def argument_parser():
@ -303,6 +330,9 @@ def argument_parser():
parser.add_option(
"", "--bb-gain", dest="bb_gain", type="eng_float", default=eng_notation.num_to_str(satnogs.not_set_rx_bb_gain),
help="Set bb_gain [default=%default]")
parser.add_option(
"", "--bfo-freq", dest="bfo_freq", type="eng_float", default=eng_notation.num_to_str(1e3),
help="Set bfo_freq [default=%default]")
parser.add_option(
"", "--decoded-data-file-path", dest="decoded_data_file_path", type="string", default='/tmp/.satnogs/data/data',
help="Set decoded_data_file_path [default=%default]")
@ -361,7 +391,7 @@ def main(top_block_cls=satnogs_cw_decoder, options=None):
if options is None:
options, _ = argument_parser().parse_args()
tb = top_block_cls(antenna=options.antenna, bb_gain=options.bb_gain, decoded_data_file_path=options.decoded_data_file_path, dev_args=options.dev_args, doppler_correction_per_sec=options.doppler_correction_per_sec, enable_iq_dump=options.enable_iq_dump, file_path=options.file_path, if_gain=options.if_gain, iq_file_path=options.iq_file_path, lo_offset=options.lo_offset, ppm=options.ppm, rf_gain=options.rf_gain, rigctl_port=options.rigctl_port, rx_freq=options.rx_freq, rx_sdr_device=options.rx_sdr_device, udp_IP=options.udp_IP, udp_port=options.udp_port, waterfall_file_path=options.waterfall_file_path, wpm=options.wpm)
tb = top_block_cls(antenna=options.antenna, bb_gain=options.bb_gain, bfo_freq=options.bfo_freq, decoded_data_file_path=options.decoded_data_file_path, dev_args=options.dev_args, doppler_correction_per_sec=options.doppler_correction_per_sec, enable_iq_dump=options.enable_iq_dump, file_path=options.file_path, if_gain=options.if_gain, iq_file_path=options.iq_file_path, lo_offset=options.lo_offset, ppm=options.ppm, rf_gain=options.rf_gain, rigctl_port=options.rigctl_port, rx_freq=options.rx_freq, rx_sdr_device=options.rx_sdr_device, udp_IP=options.udp_IP, udp_port=options.udp_port, waterfall_file_path=options.waterfall_file_path, wpm=options.wpm)
tb.start()
tb.wait()