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gr-satnogs
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Code Issues Releases Wiki Activity

Improve sensitivity of FSK/MSK flowgraphs

This commit is contained in:
Manolis Surligas 2019-01-06 14:19:59 +02:00
parent a8745dd6a4
commit a6dbc22d43
4 changed files with 205 additions and 34 deletions
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95
apps/flowgraphs/fsk_ax25.grc
View File

@ -136,7 +136,7 @@
</param>
<param>
<key>_coordinate</key>
<value>(975, 395)</value>
<value>(1190, 411)</value>
</param>
<param>
<key>_rotation</key>
@ -179,7 +179,7 @@
</param>
<param>
<key>_coordinate</key>
<value>(992, 316)</value>
<value>(1030, 195)</value>
</param>
<param>
<key>_rotation</key>
@ -406,7 +406,7 @@
</param>
<param>
<key>_coordinate</key>
<value>(1432, 188)</value>
<value>(1390, 403)</value>
</param>
<param>
<key>_rotation</key>
@ -457,7 +457,7 @@
</param>
<param>
<key>_coordinate</key>
<value>(1208, 308)</value>
<value>(1206, 187)</value>
</param>
<param>
<key>_rotation</key>
@ -641,7 +641,7 @@
</param>
<param>
<key>_coordinate</key>
<value>(1616, 164)</value>
<value>(1590, 379)</value>
</param>
<param>
<key>_rotation</key>
@ -998,6 +998,81 @@ we shift the LO a little further</value>
<value>100e3</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>baudrate / 2 + 1500</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>(1007, 363)</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</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>4.0 * baudrate</value>
</param>
<param>
<key>width</key>
<value>1000</value>
</param>
<param>
<key>win</key>
<value>firdes.WIN_HAMMING</value>
</param>
</block>
<block>
<key>osmosdr_source</key>
<param>
@ -3088,7 +3163,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>_coordinate</key>
<value>(1384, 300)</value>
<value>(1382, 179)</value>
</param>
<param>
<key>_rotation</key>
@ -3500,6 +3575,12 @@ 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>analog_quadrature_demod_cf_0_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>osmosdr_source_0</source_block_id>
<sink_block_id>blocks_rotator_cc_0</sink_block_id>
@ -3526,7 +3607,7 @@ we shift the LO a little further</value>
</connection>
<connection>
<source_block_id>pfb_arb_resampler_xxx_0_0</source_block_id>
<sink_block_id>analog_quadrature_demod_cf_0_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>

113
apps/flowgraphs/msk_ax25.grc
View File

@ -136,7 +136,7 @@
</param>
<param>
<key>_coordinate</key>
<value>(1248, 196)</value>
<value>(1214, 419)</value>
</param>
<param>
<key>_rotation</key>
@ -406,7 +406,7 @@
</param>
<param>
<key>_coordinate</key>
<value>(1432, 188)</value>
<value>(1430, 411)</value>
</param>
<param>
<key>_rotation</key>
@ -641,7 +641,7 @@
</param>
<param>
<key>_coordinate</key>
<value>(1616, 164)</value>
<value>(1614, 387)</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>
@ -998,6 +998,81 @@ we shift the LO a little further</value>
<value>100e3</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>baudrate / 2 + 1500</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>(1022, 371)</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</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>4.0 * baudrate</value>
</param>
<param>
<key>width</key>
<value>1000</value>
</param>
<param>
<key>win</key>
<value>firdes.WIN_HAMMING</value>
</param>
</block>
<block>
<key>osmosdr_source</key>
<param>
@ -2488,7 +2563,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>_coordinate</key>
<value>(984, 172)</value>
<value>(735, 395)</value>
</param>
<param>
<key>_rotation</key>
@ -2496,7 +2571,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>id</key>
<value>pfb_arb_resampler_xxx_0_0</value>
<value>pfb_arb_resampler_xxx_0_0_0</value>
</param>
<param>
<key>maxoutbuf</key>
@ -2512,7 +2587,7 @@ 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 +2595,7 @@ we shift the LO a little further</value>
</param>
<param>
<key>atten</key>
<value>100</value>
<value>60</value>
</param>
<param>
<key>taps</key>
@ -3500,6 +3575,12 @@ 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>analog_quadrature_demod_cf_0_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>osmosdr_source_0</source_block_id>
<sink_block_id>blocks_rotator_cc_0</sink_block_id>
@ -3512,12 +3593,6 @@ 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>
@ -3531,8 +3606,8 @@ we shift the LO a little further</value>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>pfb_arb_resampler_xxx_0_0</source_block_id>
<sink_block_id>analog_quadrature_demod_cf_0_0</sink_block_id>
<source_block_id>pfb_arb_resampler_xxx_0_0_0</source_block_id>
<sink_block_id>low_pass_filter_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
@ -3566,6 +3641,12 @@ 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_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>

8
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 Jan 4 20:33:37 2019
# Generated: Sun Jan 6 14:19:34 2019
##################################################
from gnuradio import analog
@ -96,6 +96,8 @@ 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.low_pass_filter_0 = filter.fir_filter_ccf(1, firdes.low_pass(
1, 4.0 * baudrate, baudrate / 2 + 1500, 1000, firdes.WIN_HAMMING, 6.76))
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)
@ -122,11 +124,12 @@ class satnogs_fsk_ax25(gr.top_block):
self.connect((self.digital_binary_slicer_fb_0, 0), (self.satnogs_ax25_decoder_bm_0, 0))
self.connect((self.digital_binary_slicer_fb_0, 0), (self.satnogs_ax25_decoder_bm_0_0, 0))
self.connect((self.digital_clock_recovery_mm_xx_0, 0), (self.satnogs_quad_demod_filter_ff_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.analog_quadrature_demod_cf_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.analog_quadrature_demod_cf_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.pfb_arb_resampler_xxx_0_0, 0), (self.analog_quadrature_demod_cf_0_0, 0))
self.connect((self.pfb_arb_resampler_xxx_0_0, 0), (self.low_pass_filter_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))
@ -144,6 +147,7 @@ class satnogs_fsk_ax25(gr.top_block):
def set_baudrate(self, baudrate):
self.baudrate = baudrate
self.pfb_arb_resampler_xxx_0_0.set_rate((4.0*self.baudrate)/satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx))
self.low_pass_filter_0.set_taps(firdes.low_pass(1, 4.0 * self.baudrate, self.baudrate / 2 + 1500, 1000, firdes.WIN_HAMMING, 6.76))
def get_bb_gain(self):
return self.bb_gain

23
apps/flowgraphs/satnogs_msk_ax25.py
View File

@ -5,7 +5,7 @@
# Title: satnogs_msk_ax25
# Author: Manolis Surligas (surligas@gmail.com)
# Description: Generic MSK AX.25 decoder
# Generated: Fri Aug 17 00:38:15 2018
# Generated: Sun Jan 6 14:17:55 2019
##################################################
from gnuradio import analog
@ -71,11 +71,11 @@ class satnogs_msk_ax25(gr.top_block):
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.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,
self.pfb_arb_resampler_xxx_0_0_0 = pfb.arb_resampler_ccf(
(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)
self.pfb_arb_resampler_xxx_0_0_0.declare_sample_delay(0)
self.pfb_arb_resampler_xxx_0 = pfb.arb_resampler_ccf(
audio_samp_rate/satnogs.handle_samp_rate_rx(rx_sdr_device, samp_rate_rx),
@ -96,7 +96,9 @@ class satnogs_msk_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.low_pass_filter_0 = filter.fir_filter_ccf(1, firdes.low_pass(
1, 4.0 * baudrate, baudrate / 2 + 1500, 1000, firdes.WIN_HAMMING, 6.76))
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)
@ -122,13 +124,14 @@ class satnogs_msk_ax25(gr.top_block):
self.connect((self.digital_binary_slicer_fb_0, 0), (self.satnogs_ax25_decoder_bm_0, 0))
self.connect((self.digital_binary_slicer_fb_0, 0), (self.satnogs_ax25_decoder_bm_0_0, 0))
self.connect((self.digital_clock_recovery_mm_xx_0, 0), (self.satnogs_quad_demod_filter_ff_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.analog_quadrature_demod_cf_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.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.pfb_arb_resampler_xxx_0_0_0, 0), (self.low_pass_filter_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, 0))
self.connect((self.satnogs_quad_demod_filter_ff_0, 0), (self.digital_binary_slicer_fb_0, 0))
def get_antenna(self):
@ -143,7 +146,8 @@ class satnogs_msk_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_0.set_rate((4.0*self.baudrate)/satnogs.handle_samp_rate_rx(self.rx_sdr_device, self.samp_rate_rx))
self.low_pass_filter_0.set_taps(firdes.low_pass(1, 4.0 * self.baudrate, self.baudrate / 2 + 1500, 1000, firdes.WIN_HAMMING, 6.76))
def get_bb_gain(self):
return self.bb_gain
@ -236,6 +240,7 @@ class satnogs_msk_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_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 +255,7 @@ class satnogs_msk_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_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 +284,6 @@ class satnogs_msk_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))