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Code Issues Releases Wiki Activity

Increase CW sensitivity 

* Switch from amplitude based approach to auto-correlation
* Limit the bandwidth of the PLL using a low pass filter
* Reject noise of the PLL using a very steep low pass after it
This commit is contained in:
Manolis Surligas 2019-01-04 20:33:55 +02:00
parent 67ea02a248
commit a8745dd6a4
4 changed files with 503 additions and 152 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

516
apps/flowgraphs/cw_decoder.grc
View File

@ -116,6 +116,123 @@
<value>48000</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>_enabled</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(455, 35)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>dec</value>
</param>
<param>
<key>value</key>
<value>8</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>_enabled</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(359, 35)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>dot_samples</value>
</param>
<param>
<key>value</key>
<value>int((1.2 / wpm) / (1.0 / (audio_samp_rate / 10.0)))</value>
</param>
</block>
<block>
<key>analog_agc2_xx</key>
<param>
<key>attack_rate</key>
<value>1e-4</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>1e-4</value>
</param>
<param>
<key>_enabled</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(567, 283)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>gain</key>
<value>1.0</value>
</param>
<param>
<key>id</key>
<value>analog_agc2_xx_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>1.0</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
</block>
<block>
<key>analog_agc2_xx</key>
<param>
@ -179,65 +296,6 @@
<value>complex</value>
</param>
</block>
<block>
<key>analog_agc_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>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(1372, 339)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>gain</key>
<value>1.0</value>
</param>
<param>
<key>id</key>
<value>analog_agc_xx_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>rate</key>
<value>1e-3</value>
</param>
<param>
<key>reference</key>
<value>1.0</value>
</param>
<param>
<key>type</key>
<value>float</value>
</param>
</block>
<block>
<key>analog_pll_carriertracking_cc</key>
<param>
@ -258,7 +316,7 @@
</param>
<param>
<key>_coordinate</key>
<value>(960, 348)</value>
<value>(919, 299)</value>
</param>
<param>
<key>_rotation</key>
@ -270,11 +328,11 @@
</param>
<param>
<key>w</key>
<value>2*math.pi/400.0</value>
<value>2*math.pi/100</value>
</param>
<param>
<key>max_freq</key>
<value>2*math.pi*2e3/audio_samp_rate</value>
<value>2*math.pi*2500</value>
</param>
<param>
<key>maxoutbuf</key>
@ -282,7 +340,7 @@
</param>
<param>
<key>min_freq</key>
<value>-2*math.pi*2e3/audio_samp_rate</value>
<value>-2*math.pi*2500</value>
</param>
<param>
<key>minoutbuf</key>
@ -496,7 +554,7 @@ tone. This tone is typically 1 kHz.</value>
</param>
</block>
<block>
<key>blocks_complex_to_mag_squared</key>
<key>blocks_complex_to_mag</key>
<param>
<key>alias</key>
<value></value>
@ -515,15 +573,15 @@ tone. This tone is typically 1 kHz.</value>
</param>
<param>
<key>_coordinate</key>
<value>(1168, 368)</value>
<value>(1630, 479)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
<value>180</value>
</param>
<param>
<key>id</key>
<value>blocks_complex_to_mag_squared_0</value>
<value>blocks_complex_to_mag_0</value>
</param>
<param>
<key>maxoutbuf</key>
@ -581,6 +639,104 @@ tone. This tone is typically 1 kHz.</value>
<value>1</value>
</param>
</block>
<block>
<key>blocks_delay</key>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>delay</key>
<value>int(dot_samples)/dec</value>
</param>
<param>
<key>_enabled</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(1302, 403)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>blocks_delay_0</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>num_ports</key>
<value>1</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
</block>
<block>
<key>blocks_multiply_conjugate_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>_enabled</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(1358, 311)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>blocks_multiply_conjugate_cc_0</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
</block>
<block>
<key>blocks_multiply_xx</key>
<param>
@ -910,6 +1066,61 @@ tone. This tone is typically 1 kHz.</value>
<value>test.txt</value>
</param>
</block>
<block>
<key>fir_filter_xxx</key>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>decim</key>
<value>1</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>_coordinate</key>
<value>(1574, 315)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>fir_filter_xxx_0</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>samp_delay</key>
<value>0</value>
</param>
<param>
<key>taps</key>
<value>[1.0] * (int(dot_samples)/dec)</value>
</param>
<param>
<key>type</key>
<value>ccc</value>
</param>
</block>
<block>
<key>parameter</key>
<param>
@ -1134,7 +1345,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>cutoff_freq</key>
<value>2e3</value>
<value>200</value>
</param>
<param>
<key>decim</key>
@ -1150,7 +1361,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>_coordinate</key>
<value>(1268, 179)</value>
<value>(1102, 267)</value>
</param>
<param>
<key>_rotation</key>
@ -1178,11 +1389,11 @@ we shift the LO a little further</value>
</param>
<param>
<key>samp_rate</key>
<value>audio_samp_rate</value>
<value>audio_samp_rate/10</value>
</param>
<param>
<key>width</key>
<value>1e3</value>
<value>0.1e3</value>
</param>
<param>
<key>win</key>
@ -1201,7 +1412,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>comment</key>
<value>Output samplerate: 20k / 4 = 5k</value>
<value></value>
</param>
<param>
<key>affinity</key>
@ -1209,11 +1420,11 @@ we shift the LO a little further</value>
</param>
<param>
<key>cutoff_freq</key>
<value>100</value>
<value>2500</value>
</param>
<param>
<key>decim</key>
<value>4</value>
<value>10</value>
</param>
<param>
<key>_enabled</key>
@ -1221,19 +1432,19 @@ we shift the LO a little further</value>
</param>
<param>
<key>type</key>
<value>fir_filter_fff</value>
<value>fir_filter_ccf</value>
</param>
<param>
<key>_coordinate</key>
<value>(1584, 420)</value>
<value>(743, 267)</value>
</param>
<param>
<key>_rotation</key>
<value>180</value>
<value>0</value>
</param>
<param>
<key>gain</key>
<value>4</value>
<value>1</value>
</param>
<param>
<key>id</key>
@ -1257,7 +1468,82 @@ we shift the LO a little further</value>
</param>
<param>
<key>width</key>
<value>100</value>
<value>0.4e3</value>
</param>
<param>
<key>win</key>
<value>firdes.WIN_HAMMING</value>
</param>
</block>
<block>
<key>low_pass_filter</key>
<param>
<key>beta</key>
<value>6.76</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>cutoff_freq</key>
<value>2500</value>
</param>
<param>
<key>decim</key>
<value>1</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>fir_filter_ccf</value>
</param>
<param>
<key>_coordinate</key>
<value>(1310, 155)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>gain</key>
<value>1</value>
</param>
<param>
<key>id</key>
<value>low_pass_filter_0_0_0</value>
</param>
<param>
<key>interp</key>
<value>1</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>samp_rate</key>
<value>audio_samp_rate</value>
</param>
<param>
<key>width</key>
<value>0.8e3</value>
</param>
<param>
<key>win</key>
@ -3067,7 +3353,7 @@ we shift the LO a little further</value>
<key>satnogs_cw_to_symbol</key>
<param>
<key>threshold</key>
<value>0.4</value>
<value>2.0</value>
</param>
<param>
<key>alias</key>
@ -3079,7 +3365,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>conf_level</key>
<value>0.75</value>
<value>0.90</value>
</param>
<param>
<key>affinity</key>
@ -3091,12 +3377,16 @@ we shift the LO a little further</value>
</param>
<param>
<key>_coordinate</key>
<value>(1336, 460)</value>
<value>(1206, 459)</value>
</param>
<param>
<key>_rotation</key>
<value>180</value>
</param>
<param>
<key>hysteresis</key>
<value>dot_samples/dec</value>
</param>
<param>
<key>id</key>
<value>satnogs_cw_to_symbol_0</value>
@ -3111,7 +3401,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>sampling_rate</key>
<value>audio_samp_rate/4</value>
<value>audio_samp_rate/10.0</value>
</param>
<param>
<key>wpm</key>
@ -3224,7 +3514,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>_coordinate</key>
<value>(952, 444)</value>
<value>(951, 483)</value>
</param>
<param>
<key>_rotation</key>
@ -3639,21 +3929,21 @@ we shift the LO a little further</value>
<value>20</value>
</param>
</block>
<connection>
<source_block_id>analog_agc2_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>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_agc_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>analog_pll_carriertracking_cc_0</source_block_id>
<sink_block_id>blocks_complex_to_mag_squared_0</sink_block_id>
<sink_block_id>low_pass_filter_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
@ -3664,8 +3954,8 @@ we shift the LO a little further</value>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>blocks_complex_to_mag_squared_0</source_block_id>
<sink_block_id>analog_agc_xx_0</sink_block_id>
<source_block_id>blocks_complex_to_mag_0</source_block_id>
<sink_block_id>satnogs_cw_to_symbol_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
@ -3675,6 +3965,18 @@ we shift the LO a little further</value>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>blocks_delay_0</source_block_id>
<sink_block_id>blocks_multiply_conjugate_cc_0</sink_block_id>
<source_key>0</source_key>
<sink_key>1</sink_key>
</connection>
<connection>
<source_block_id>blocks_multiply_conjugate_cc_0</source_block_id>
<sink_block_id>fir_filter_xxx_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>blocks_complex_to_real_0</sink_block_id>
@ -3688,20 +3990,32 @@ we shift the LO a little further</value>
<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_block_id>fir_filter_xxx_0</source_block_id>
<sink_block_id>blocks_complex_to_mag_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_pll_carriertracking_cc_0</sink_block_id>
<sink_block_id>blocks_delay_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>blocks_multiply_conjugate_cc_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>satnogs_cw_to_symbol_0</sink_block_id>
<sink_block_id>analog_pll_carriertracking_cc_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>low_pass_filter_0_0_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>
@ -3713,7 +4027,13 @@ we shift the LO a little further</value>
</connection>
<connection>
<source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
<sink_block_id>low_pass_filter_0</sink_block_id>
<sink_block_id>analog_agc2_xx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
<sink_block_id>low_pass_filter_0_0_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>

24
apps/flowgraphs/fsk_ax25.grc
View File

@ -136,7 +136,7 @@
</param>
<param>
<key>_coordinate</key>
<value>(1248, 196)</value>
<value>(975, 395)</value>
</param>
<param>
<key>_rotation</key>
@ -677,7 +677,7 @@
</param>
<param>
<key>omega</key>
<value>2</value>
<value>4</value>
</param>
<param>
<key>type</key>
@ -2457,7 +2457,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>atten</key>
<value>100</value>
<value>60</value>
</param>
<param>
<key>taps</key>
@ -2488,7 +2488,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>_coordinate</key>
<value>(984, 172)</value>
<value>(727, 275)</value>
</param>
<param>
<key>_rotation</key>
@ -2512,7 +2512,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>rrate</key>
<value>(2.0*baudrate)/audio_samp_rate</value>
<value>(4.0*baudrate)/satnogs.handle_samp_rate_rx(rx_sdr_device, samp_rate_rx)</value>
</param>
<param>
<key>samp_delay</key>
@ -2520,7 +2520,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>atten</key>
<value>100</value>
<value>60</value>
</param>
<param>
<key>taps</key>
@ -3512,12 +3512,6 @@ we shift the LO a little further</value>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
<sink_block_id>pfb_arb_resampler_xxx_0_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
<sink_block_id>satnogs_iq_sink_0</sink_block_id>
@ -3566,6 +3560,12 @@ we shift the LO a little further</value>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>satnogs_coarse_doppler_correction_cc_0</source_block_id>
<sink_block_id>pfb_arb_resampler_xxx_0_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>satnogs_quad_demod_filter_ff_0</source_block_id>
<sink_block_id>digital_binary_slicer_fb_0</sink_block_id>

102
apps/flowgraphs/satnogs_cw_decoder.py
View File

@ -5,7 +5,7 @@
# Title: CW Decoder
# Author: Manolis Surligas (surligas@gmail.com)
# Description: A CW (Morse) Decoder
# Generated: Sun Aug 19 21:56:19 2018
# Generated: Sun Jan 6 13:47:58 2019
##################################################
from gnuradio import analog
@ -25,7 +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, 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, samp_rate_rx=satnogs.not_set_samp_rate_rx):
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', samp_rate_rx=satnogs.not_set_samp_rate_rx, udp_IP='127.0.0.1', udp_port=16887, waterfall_file_path='/tmp/waterfall.dat', wpm=20):
gr.top_block.__init__(self, "CW Decoder")
##################################################
@ -47,16 +47,18 @@ class satnogs_cw_decoder(gr.top_block):
self.rigctl_port = rigctl_port
self.rx_freq = rx_freq
self.rx_sdr_device = rx_sdr_device
self.samp_rate_rx = samp_rate_rx
self.udp_IP = udp_IP
self.udp_port = udp_port
self.waterfall_file_path = waterfall_file_path
self.wpm = wpm
self.samp_rate_rx = samp_rate_rx
##################################################
# Variables
##################################################
self.audio_samp_rate = audio_samp_rate = 48000
self.dot_samples = dot_samples = int((1.2 / wpm) / (1.0 / (audio_samp_rate / 10.0)))
self.dec = dec = 8
##################################################
# Blocks
@ -68,7 +70,7 @@ class satnogs_cw_decoder(gr.top_block):
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(audio_samp_rate/4, 0.4, 0.75, wpm)
self.satnogs_cw_to_symbol_0 = satnogs.cw_to_symbol(audio_samp_rate/10.0, 2.0, 0.90, wpm, dot_samples/dec)
self.satnogs_coarse_doppler_correction_cc_0 = satnogs.coarse_doppler_correction_cc(rx_freq, satnogs.handle_samp_rate_rx(rx_sdr_device, samp_rate_rx))
self.pfb_arb_resampler_xxx_0 = pfb.arb_resampler_ccf(
audio_samp_rate/satnogs.handle_samp_rate_rx(rx_sdr_device, samp_rate_rx),
@ -89,20 +91,26 @@ 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(satnogs.handle_samp_rate_rx(rx_sdr_device, samp_rate_rx), 0)
self.low_pass_filter_0_0 = filter.fir_filter_fff(4, firdes.low_pass(
4, audio_samp_rate, 100, 100, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_0_0_0 = filter.fir_filter_ccf(1, firdes.low_pass(
1, audio_samp_rate, 2500, 0.8e3, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_0_0 = filter.fir_filter_ccf(10, firdes.low_pass(
1, audio_samp_rate, 2500, 0.4e3, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_0 = filter.fir_filter_ccf(1, firdes.low_pass(
1, audio_samp_rate, 2e3, 1e3, firdes.WIN_HAMMING, 6.76))
1, audio_samp_rate/10, 200, 0.1e3, firdes.WIN_HAMMING, 6.76))
self.fir_filter_xxx_0 = filter.fir_filter_ccc(1, ([1.0] * (int(dot_samples)/dec)))
self.fir_filter_xxx_0.declare_sample_delay(0)
self.blocks_rotator_cc_0 = blocks.rotator_cc(-2.0 * math.pi * (lo_offset / satnogs.handle_samp_rate_rx(rx_sdr_device, samp_rate_rx)))
self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
self.blocks_multiply_conjugate_cc_0 = blocks.multiply_conjugate_cc(1)
self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex*1, int(dot_samples)/dec)
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.blocks_complex_to_mag_0 = blocks.complex_to_mag(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/400.0, 2*math.pi*2e3/audio_samp_rate, -2*math.pi*2e3/audio_samp_rate)
self.analog_agc_xx_0 = analog.agc_ff(1e-3, 1.0, 1.0)
self.analog_agc_xx_0.set_max_gain(65536)
self.analog_pll_carriertracking_cc_0 = analog.pll_carriertracking_cc(2*math.pi/100, 2*math.pi*2500, -2*math.pi*2500)
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)
self.analog_agc2_xx_0 = analog.agc2_cc(1e-4, 1e-4, 1.0, 1.0)
self.analog_agc2_xx_0.set_max_gain(65536)
@ -113,19 +121,24 @@ 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_agc2_xx_0, 0), (self.low_pass_filter_0_0, 0))
self.connect((self.analog_agc2_xx_0_0, 0), (self.blocks_multiply_xx_0, 1))
self.connect((self.analog_agc_xx_0, 0), (self.low_pass_filter_0_0, 0))
self.connect((self.analog_pll_carriertracking_cc_0, 0), (self.blocks_complex_to_mag_squared_0, 0))
self.connect((self.analog_pll_carriertracking_cc_0, 0), (self.low_pass_filter_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.analog_agc_xx_0, 0))
self.connect((self.blocks_complex_to_mag_0, 0), (self.satnogs_cw_to_symbol_0, 0))
self.connect((self.blocks_complex_to_real_0, 0), (self.satnogs_ogg_encoder_0, 0))
self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_conjugate_cc_0, 1))
self.connect((self.blocks_multiply_conjugate_cc_0, 0), (self.fir_filter_xxx_0, 0))
self.connect((self.blocks_multiply_xx_0, 0), (self.blocks_complex_to_real_0, 0))
self.connect((self.blocks_rotator_cc_0, 0), (self.satnogs_coarse_doppler_correction_cc_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, 0), (self.satnogs_cw_to_symbol_0, 0))
self.connect((self.fir_filter_xxx_0, 0), (self.blocks_complex_to_mag_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.blocks_delay_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.blocks_multiply_conjugate_cc_0, 0))
self.connect((self.low_pass_filter_0_0, 0), (self.analog_pll_carriertracking_cc_0, 0))
self.connect((self.low_pass_filter_0_0_0, 0), (self.analog_agc2_xx_0_0, 0))
self.connect((self.osmosdr_source_0, 0), (self.blocks_rotator_cc_0, 0))
self.connect((self.pfb_arb_resampler_xxx_0, 0), (self.low_pass_filter_0, 0))
self.connect((self.pfb_arb_resampler_xxx_0, 0), (self.analog_agc2_xx_0, 0))
self.connect((self.pfb_arb_resampler_xxx_0, 0), (self.low_pass_filter_0_0_0, 0))
self.connect((self.pfb_arb_resampler_xxx_0, 0), (self.satnogs_iq_sink_0, 0))
self.connect((self.pfb_arb_resampler_xxx_0, 0), (self.satnogs_waterfall_sink_0, 0))
self.connect((self.satnogs_coarse_doppler_correction_cc_0, 0), (self.pfb_arb_resampler_xxx_0, 0))
@ -244,6 +257,16 @@ class satnogs_cw_decoder(gr.top_block):
self.osmosdr_source_0.set_bandwidth(satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx), 0)
self.blocks_rotator_cc_0.set_phase_inc(-2.0 * math.pi * (self.lo_offset / satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx)))
def get_samp_rate_rx(self):
return self.samp_rate_rx
def set_samp_rate_rx(self, samp_rate_rx):
self.samp_rate_rx = samp_rate_rx
self.pfb_arb_resampler_xxx_0.set_rate(self.audio_samp_rate/satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx))
self.osmosdr_source_0.set_sample_rate(satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx))
self.osmosdr_source_0.set_bandwidth(satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx), 0)
self.blocks_rotator_cc_0.set_phase_inc(-2.0 * math.pi * (self.lo_offset / satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx)))
def get_udp_IP(self):
return self.udp_IP
@ -267,28 +290,35 @@ class satnogs_cw_decoder(gr.top_block):
def set_wpm(self, wpm):
self.wpm = wpm
def get_samp_rate_rx(self):
return self.samp_rate_rx
def set_samp_rate_rx(self, samp_rate_rx):
self.samp_rate_rx = samp_rate_rx
self.pfb_arb_resampler_xxx_0.set_rate(self.audio_samp_rate/satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx))
self.osmosdr_source_0.set_sample_rate(satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx))
self.osmosdr_source_0.set_bandwidth(satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx), 0)
self.blocks_rotator_cc_0.set_phase_inc(-2.0 * math.pi * (self.lo_offset / satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx)))
self.set_dot_samples(int((1.2 / self.wpm) / (1.0 / (self.audio_samp_rate / 10.0))))
def get_audio_samp_rate(self):
return self.audio_samp_rate
def set_audio_samp_rate(self, audio_samp_rate):
self.audio_samp_rate = audio_samp_rate
self.set_dot_samples(int((1.2 / self.wpm) / (1.0 / (self.audio_samp_rate / 10.0))))
self.pfb_arb_resampler_xxx_0.set_rate(self.audio_samp_rate/satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx))
self.low_pass_filter_0_0.set_taps(firdes.low_pass(4, self.audio_samp_rate, 100, 100, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_0.set_taps(firdes.low_pass(1, self.audio_samp_rate, 2e3, 1e3, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_0_0_0.set_taps(firdes.low_pass(1, self.audio_samp_rate, 2500, 0.8e3, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_0_0.set_taps(firdes.low_pass(1, self.audio_samp_rate, 2500, 0.4e3, firdes.WIN_HAMMING, 6.76))
self.low_pass_filter_0.set_taps(firdes.low_pass(1, self.audio_samp_rate/10, 200, 0.1e3, firdes.WIN_HAMMING, 6.76))
self.analog_sig_source_x_0.set_sampling_freq(self.audio_samp_rate)
self.analog_pll_carriertracking_cc_0.set_max_freq(2*math.pi*2e3/self.audio_samp_rate)
self.analog_pll_carriertracking_cc_0.set_min_freq(-2*math.pi*2e3/self.audio_samp_rate)
def get_dot_samples(self):
return self.dot_samples
def set_dot_samples(self, dot_samples):
self.dot_samples = dot_samples
self.fir_filter_xxx_0.set_taps(([1.0] * (int(self.dot_samples)/self.dec)))
self.blocks_delay_0.set_dly(int(self.dot_samples)/self.dec)
def get_dec(self):
return self.dec
def set_dec(self, dec):
self.dec = dec
self.fir_filter_xxx_0.set_taps(([1.0] * (int(self.dot_samples)/self.dec)))
self.blocks_delay_0.set_dly(int(self.dot_samples)/self.dec)
def argument_parser():
@ -342,6 +372,9 @@ def argument_parser():
parser.add_option(
"", "--rx-sdr-device", dest="rx_sdr_device", type="string", default='usrpb200',
help="Set rx_sdr_device [default=%default]")
parser.add_option(
"", "--samp-rate-rx", dest="samp_rate_rx", type="eng_float", default=eng_notation.num_to_str(satnogs.not_set_samp_rate_rx),
help="Set samp_rate_rx [default=%default]")
parser.add_option(
"", "--udp-IP", dest="udp_IP", type="string", default='127.0.0.1',
help="Set udp_IP [default=%default]")
@ -354,9 +387,6 @@ def argument_parser():
parser.add_option(
"", "--wpm", dest="wpm", type="intx", default=20,
help="Set wpm [default=%default]")
parser.add_option(
"", "--samp-rate-rx", dest="samp_rate_rx", type="eng_float", default=eng_notation.num_to_str(satnogs.not_set_samp_rate_rx),
help="Set samp_rate_rx [default=%default]")
return parser
@ -364,7 +394,7 @@ 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, 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, samp_rate_rx=options.samp_rate_rx)
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, samp_rate_rx=options.samp_rate_rx, udp_IP=options.udp_IP, udp_port=options.udp_port, waterfall_file_path=options.waterfall_file_path, wpm=options.wpm)
tb.start()
tb.wait()

13
apps/flowgraphs/satnogs_fsk_ax25.py
View File

@ -5,7 +5,7 @@
# Title: satnogs_fsk_ax25
# Author: Manolis Surligas (surligas@gmail.com)
# Description: Generic FSK AX.25 decoder
# Generated: Fri Aug 17 00:38:04 2018
# Generated: Fri Jan 4 20:33:37 2019
##################################################
from gnuradio import analog
@ -72,7 +72,7 @@ class satnogs_fsk_ax25(gr.top_block):
self.satnogs_ax25_decoder_bm_0_0 = satnogs.ax25_decoder_bm('GND', 0, True, False, 1024)
self.satnogs_ax25_decoder_bm_0 = satnogs.ax25_decoder_bm('GND', 0, True, True, 1024)
self.pfb_arb_resampler_xxx_0_0 = pfb.arb_resampler_ccf(
(2.0*baudrate)/audio_samp_rate,
(4.0*baudrate)/satnogs.handle_samp_rate_rx(rx_sdr_device, samp_rate_rx),
taps=None,
flt_size=32)
self.pfb_arb_resampler_xxx_0_0.declare_sample_delay(0)
@ -96,7 +96,7 @@ class satnogs_fsk_ax25(gr.top_block):
self.osmosdr_source_0.set_antenna(satnogs.handle_rx_antenna(rx_sdr_device, antenna), 0)
self.osmosdr_source_0.set_bandwidth(satnogs.handle_samp_rate_rx(rx_sdr_device, samp_rate_rx), 0)
self.digital_clock_recovery_mm_xx_0 = digital.clock_recovery_mm_ff(2, 0.25*0.175*0.175, 0.5, 0.175, 0.005)
self.digital_clock_recovery_mm_xx_0 = digital.clock_recovery_mm_ff(4, 0.25*0.175*0.175, 0.5, 0.175, 0.005)
self.digital_binary_slicer_fb_0 = digital.binary_slicer_fb()
self.dc_blocker_xx_0_0 = filter.dc_blocker_ff(1024, True)
self.dc_blocker_xx_0 = filter.dc_blocker_ff(1024, True)
@ -124,11 +124,11 @@ class satnogs_fsk_ax25(gr.top_block):
self.connect((self.digital_clock_recovery_mm_xx_0, 0), (self.satnogs_quad_demod_filter_ff_0, 0))
self.connect((self.osmosdr_source_0, 0), (self.blocks_rotator_cc_0, 0))
self.connect((self.pfb_arb_resampler_xxx_0, 0), (self.analog_quadrature_demod_cf_0_0_0, 0))
self.connect((self.pfb_arb_resampler_xxx_0, 0), (self.pfb_arb_resampler_xxx_0_0, 0))
self.connect((self.pfb_arb_resampler_xxx_0, 0), (self.satnogs_iq_sink_0, 0))
self.connect((self.pfb_arb_resampler_xxx_0, 0), (self.satnogs_waterfall_sink_0, 0))
self.connect((self.pfb_arb_resampler_xxx_0_0, 0), (self.analog_quadrature_demod_cf_0_0, 0))
self.connect((self.satnogs_coarse_doppler_correction_cc_0, 0), (self.pfb_arb_resampler_xxx_0, 0))
self.connect((self.satnogs_coarse_doppler_correction_cc_0, 0), (self.pfb_arb_resampler_xxx_0_0, 0))
self.connect((self.satnogs_quad_demod_filter_ff_0, 0), (self.digital_binary_slicer_fb_0, 0))
def get_antenna(self):
@ -143,7 +143,7 @@ class satnogs_fsk_ax25(gr.top_block):
def set_baudrate(self, baudrate):
self.baudrate = baudrate
self.pfb_arb_resampler_xxx_0_0.set_rate((2.0*self.baudrate)/self.audio_samp_rate)
self.pfb_arb_resampler_xxx_0_0.set_rate((4.0*self.baudrate)/satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx))
def get_bb_gain(self):
return self.bb_gain
@ -236,6 +236,7 @@ class satnogs_fsk_ax25(gr.top_block):
def set_rx_sdr_device(self, rx_sdr_device):
self.rx_sdr_device = rx_sdr_device
self.pfb_arb_resampler_xxx_0_0.set_rate((4.0*self.baudrate)/satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx))
self.pfb_arb_resampler_xxx_0.set_rate(self.audio_samp_rate/satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx))
self.osmosdr_source_0.set_sample_rate(satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx))
self.osmosdr_source_0.set_gain(satnogs.handle_rx_rf_gain(self.rx_sdr_device, self.rf_gain), 0)
@ -250,6 +251,7 @@ class satnogs_fsk_ax25(gr.top_block):
def set_samp_rate_rx(self, samp_rate_rx):
self.samp_rate_rx = samp_rate_rx
self.pfb_arb_resampler_xxx_0_0.set_rate((4.0*self.baudrate)/satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx))
self.pfb_arb_resampler_xxx_0.set_rate(self.audio_samp_rate/satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx))
self.osmosdr_source_0.set_sample_rate(satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx))
self.osmosdr_source_0.set_bandwidth(satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx), 0)
@ -278,7 +280,6 @@ class satnogs_fsk_ax25(gr.top_block):
def set_audio_samp_rate(self, audio_samp_rate):
self.audio_samp_rate = audio_samp_rate
self.pfb_arb_resampler_xxx_0_0.set_rate((2.0*self.baudrate)/self.audio_samp_rate)
self.pfb_arb_resampler_xxx_0.set_rate(self.audio_samp_rate/satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx))