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Set the UPSAT uplink at 1200

This commit is contained in:
Manolis Surligas 2016-07-29 20:29:04 +03:00
parent 5f55060473
commit 265f526b69
2 changed files with 109 additions and 39 deletions
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78
apps/flowgraphs/upsat_transceiver_cli.grc
View File

@ -101,13 +101,40 @@
</param> </param>
<param> <param>
<key>id</key> <key>id</key>
<value>baud_rate</value> <value>baud_rate_downlink</value>
</param> </param>
<param> <param>
<key>value</key> <key>value</key>
<value>9600</value> <value>9600</value>
</param> </param>
</block> </block>
<block>
<key>variable</key>
<param>
<key>comment</key>
<value>FSK baud rate</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>_coordinate</key>
<value>(1048, 109)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>baud_rate_uplink</value>
</param>
<param>
<key>value</key>
<value>1200</value>
</param>
</block>
<block> <block>
<key>variable</key> <key>variable</key>
<param> <param>
@ -122,7 +149,7 @@ SDR received samples</value>
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(752, 13)</value> <value>(736, 13)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -149,7 +176,7 @@ SDR received samples</value>
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(888, 13)</value> <value>(872, 13)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -257,7 +284,7 @@ SDR received samples</value>
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(416, 13)</value> <value>(296, 13)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -265,11 +292,38 @@ SDR received samples</value>
</param> </param>
<param> <param>
<key>id</key> <key>id</key>
<value>modulation_index</value> <value>modulation_index_downlink</value>
</param> </param>
<param> <param>
<key>value</key> <key>value</key>
<value>deviation / (baud_rate / 2.0)</value> <value>deviation / (baud_rate_downlink / 2.0)</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>_coordinate</key>
<value>(296, 77)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>modulation_index_uplink</value>
</param>
<param>
<key>value</key>
<value>deviation / (baud_rate_uplink / 2.0)</value>
</param> </param>
</block> </block>
<block> <block>
@ -285,7 +339,7 @@ SDR received samples</value>
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(1296, 13)</value> <value>(1368, 13)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -473,7 +527,7 @@ is too great and becomes a bottlneck.</value>
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(1144, 13)</value> <value>(1216, 13)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -528,7 +582,7 @@ is too great and becomes a bottlneck.</value>
</param> </param>
<param> <param>
<key>sensitivity</key> <key>sensitivity</key>
<value>(math.pi*modulation_index) / samples_per_symbol_tx</value> <value>(math.pi*modulation_index_uplink) / samples_per_symbol_tx</value>
</param> </param>
</block> </block>
<block> <block>
@ -559,7 +613,7 @@ is too great and becomes a bottlneck.</value>
</param> </param>
<param> <param>
<key>gain</key> <key>gain</key>
<value>((first_stage_samp_rate_rx) / baud_rate)/(math.pi*modulation_index)</value> <value>((first_stage_samp_rate_rx) / baud_rate_downlink)/(math.pi*modulation_index_downlink)</value>
</param> </param>
<param> <param>
<key>id</key> <key>id</key>
@ -869,7 +923,7 @@ is too great and becomes a bottlneck.</value>
</param> </param>
<param> <param>
<key>omega</key> <key>omega</key>
<value>first_stage_samp_rate_rx/baud_rate</value> <value>first_stage_samp_rate_rx/baud_rate_downlink</value>
</param> </param>
<param> <param>
<key>type</key> <key>type</key>
@ -3593,7 +3647,7 @@ we shift the LO a little further</value>
</param> </param>
<param> <param>
<key>rrate</key> <key>rrate</key>
<value>samp_rate_tx / (baud_rate * samples_per_symbol_tx)</value> <value>samp_rate_tx / (baud_rate_uplink * samples_per_symbol_tx)</value>
</param> </param>
<param> <param>
<key>samp_delay</key> <key>samp_delay</key>

70
apps/flowgraphs/upsat_transceiver_cli.py
View File

@ -5,7 +5,7 @@
# Title: Upsat Transceiver Cli # Title: Upsat Transceiver Cli
# Author: Manolis Surligas (surligas@gmail.com) # Author: Manolis Surligas (surligas@gmail.com)
# Description: SATNOGS transceiver for UPSAT satellite # Description: SATNOGS transceiver for UPSAT satellite
# Generated: Wed Jul 27 21:46:59 2016 # Generated: Sun Jul 31 13:00:43 2016
################################################## ##################################################
from gnuradio import analog from gnuradio import analog
@ -51,14 +51,16 @@ class upsat_transceiver_cli(gr.top_block):
self.gaussian_taps = gaussian_taps = filter.firdes.gaussian(1.0, samples_per_symbol_tx, 1.0, 4*samples_per_symbol_tx) self.gaussian_taps = gaussian_taps = filter.firdes.gaussian(1.0, samples_per_symbol_tx, 1.0, 4*samples_per_symbol_tx)
self.deviation = deviation = 3.9973e3 self.deviation = deviation = 3.9973e3
self.decimation_rx = decimation_rx = 20 self.decimation_rx = decimation_rx = 20
self.baud_rate = baud_rate = 9600 self.baud_rate_uplink = baud_rate_uplink = 1200
self.baud_rate_downlink = baud_rate_downlink = 9600
self.tx_frequency = tx_frequency = 145.835e6 self.tx_frequency = tx_frequency = 145.835e6
self.taps = taps = firdes.low_pass(1.0, samp_rate_rx, 20000, 60000, firdes.WIN_HAMMING, 6.76) self.taps = taps = firdes.low_pass(1.0, samp_rate_rx, 20000, 60000, firdes.WIN_HAMMING, 6.76)
self.samp_rate_tx = samp_rate_tx = satnogs.hw_tx_settings[rx_sdr_device]['samp_rate'] self.samp_rate_tx = samp_rate_tx = satnogs.hw_tx_settings[rx_sdr_device]['samp_rate']
self.rx_frequency = rx_frequency = 435.765e6 self.rx_frequency = rx_frequency = 435.765e6
self.modulation_index = modulation_index = deviation / (baud_rate / 2.0) self.modulation_index_uplink = modulation_index_uplink = deviation / (baud_rate_uplink / 2.0)
self.modulation_index_downlink = modulation_index_downlink = deviation / (baud_rate_downlink / 2.0)
self.interp_taps = interp_taps = numpy.convolve(numpy.array(gaussian_taps), numpy.array(sq_wave)) self.interp_taps = interp_taps = numpy.convolve(numpy.array(gaussian_taps), numpy.array(sq_wave))
self.first_stage_samp_rate_rx = first_stage_samp_rate_rx = samp_rate_rx / decimation_rx self.first_stage_samp_rate_rx = first_stage_samp_rate_rx = samp_rate_rx / decimation_rx
@ -72,7 +74,7 @@ class upsat_transceiver_cli(gr.top_block):
self.satnogs_qb50_deframer_0 = satnogs.qb50_deframer(0xe) self.satnogs_qb50_deframer_0 = satnogs.qb50_deframer(0xe)
self.satnogs_ax25_decoder_bm_0 = satnogs.ax25_decoder_bm('GND', 0, False, True, 256) self.satnogs_ax25_decoder_bm_0 = satnogs.ax25_decoder_bm('GND', 0, False, True, 256)
self.pfb_arb_resampler_xxx_0 = pfb.arb_resampler_ccf( self.pfb_arb_resampler_xxx_0 = pfb.arb_resampler_ccf(
samp_rate_tx / (baud_rate * samples_per_symbol_tx), samp_rate_tx / (baud_rate_uplink * samples_per_symbol_tx),
taps=(firdes.low_pass_2(32, 32, 0.8, 0.1, 60)), taps=(firdes.low_pass_2(32, 32, 0.8, 0.1, 60)),
flt_size=32) flt_size=32)
self.pfb_arb_resampler_xxx_0.declare_sample_delay(0) self.pfb_arb_resampler_xxx_0.declare_sample_delay(0)
@ -103,12 +105,12 @@ class upsat_transceiver_cli(gr.top_block):
self.interp_fir_filter_xxx_0 = filter.interp_fir_filter_fff(samples_per_symbol_tx, (interp_taps)) self.interp_fir_filter_xxx_0 = filter.interp_fir_filter_fff(samples_per_symbol_tx, (interp_taps))
self.interp_fir_filter_xxx_0.declare_sample_delay(0) self.interp_fir_filter_xxx_0.declare_sample_delay(0)
self.freq_xlating_fir_filter_xxx_0 = filter.freq_xlating_fir_filter_ccc(decimation_rx, (taps), lo_offset, samp_rate_rx) self.freq_xlating_fir_filter_xxx_0 = filter.freq_xlating_fir_filter_ccc(decimation_rx, (taps), lo_offset, samp_rate_rx)
self.digital_clock_recovery_mm_xx_0 = digital.clock_recovery_mm_ff(first_stage_samp_rate_rx/baud_rate, 0.25*0.175*0.175, 0.5, 0.175, 0.005) self.digital_clock_recovery_mm_xx_0 = digital.clock_recovery_mm_ff(first_stage_samp_rate_rx/baud_rate_downlink, 0.25*0.175*0.175, 0.5, 0.175, 0.005)
self.digital_binary_slicer_fb_0 = digital.binary_slicer_fb() self.digital_binary_slicer_fb_0 = digital.binary_slicer_fb()
self.blocks_multiply_xx_0 = blocks.multiply_vcc(1) self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
self.analog_sig_source_x_0 = analog.sig_source_c(samp_rate_tx, analog.GR_COS_WAVE, lo_offset , 1, 0) self.analog_sig_source_x_0 = analog.sig_source_c(samp_rate_tx, analog.GR_COS_WAVE, lo_offset , 1, 0)
self.analog_quadrature_demod_cf_0_0 = analog.quadrature_demod_cf(((first_stage_samp_rate_rx) / baud_rate)/(math.pi*modulation_index)) self.analog_quadrature_demod_cf_0_0 = analog.quadrature_demod_cf(((first_stage_samp_rate_rx) / baud_rate_downlink)/(math.pi*modulation_index_downlink))
self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc((math.pi*modulation_index) / samples_per_symbol_tx) self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc((math.pi*modulation_index_uplink) / samples_per_symbol_tx)
################################################## ##################################################
# Connections # Connections
@ -198,8 +200,8 @@ class upsat_transceiver_cli(gr.top_block):
self.samples_per_symbol_tx = samples_per_symbol_tx self.samples_per_symbol_tx = samples_per_symbol_tx
self.set_gaussian_taps(filter.firdes.gaussian(1.0, self.samples_per_symbol_tx, 1.0, 4*self.samples_per_symbol_tx)) self.set_gaussian_taps(filter.firdes.gaussian(1.0, self.samples_per_symbol_tx, 1.0, 4*self.samples_per_symbol_tx))
self.set_sq_wave((1.0, ) * self.samples_per_symbol_tx) self.set_sq_wave((1.0, ) * self.samples_per_symbol_tx)
self.analog_frequency_modulator_fc_0.set_sensitivity((math.pi*self.modulation_index) / self.samples_per_symbol_tx) self.analog_frequency_modulator_fc_0.set_sensitivity((math.pi*self.modulation_index_uplink) / self.samples_per_symbol_tx)
self.pfb_arb_resampler_xxx_0.set_rate(self.samp_rate_tx / (self.baud_rate * self.samples_per_symbol_tx)) self.pfb_arb_resampler_xxx_0.set_rate(self.samp_rate_tx / (self.baud_rate_uplink * self.samples_per_symbol_tx))
def get_sq_wave(self): def get_sq_wave(self):
return self.sq_wave return self.sq_wave
@ -229,7 +231,8 @@ class upsat_transceiver_cli(gr.top_block):
def set_deviation(self, deviation): def set_deviation(self, deviation):
self.deviation = deviation self.deviation = deviation
self.set_modulation_index(self.deviation / (self.baud_rate / 2.0)) self.set_modulation_index_downlink(self.deviation / (self.baud_rate_downlink / 2.0))
self.set_modulation_index_uplink(self.deviation / (self.baud_rate_uplink / 2.0))
def get_decimation_rx(self): def get_decimation_rx(self):
return self.decimation_rx return self.decimation_rx
@ -238,15 +241,22 @@ class upsat_transceiver_cli(gr.top_block):
self.decimation_rx = decimation_rx self.decimation_rx = decimation_rx
self.set_first_stage_samp_rate_rx(self.samp_rate_rx / self.decimation_rx) self.set_first_stage_samp_rate_rx(self.samp_rate_rx / self.decimation_rx)
def get_baud_rate(self): def get_baud_rate_uplink(self):
return self.baud_rate return self.baud_rate_uplink
def set_baud_rate(self, baud_rate): def set_baud_rate_uplink(self, baud_rate_uplink):
self.baud_rate = baud_rate self.baud_rate_uplink = baud_rate_uplink
self.set_modulation_index(self.deviation / (self.baud_rate / 2.0)) self.pfb_arb_resampler_xxx_0.set_rate(self.samp_rate_tx / (self.baud_rate_uplink * self.samples_per_symbol_tx))
self.analog_quadrature_demod_cf_0_0.set_gain(((self.first_stage_samp_rate_rx) / self.baud_rate)/(math.pi*self.modulation_index)) self.set_modulation_index_uplink(self.deviation / (self.baud_rate_uplink / 2.0))
self.digital_clock_recovery_mm_xx_0.set_omega(self.first_stage_samp_rate_rx/self.baud_rate)
self.pfb_arb_resampler_xxx_0.set_rate(self.samp_rate_tx / (self.baud_rate * self.samples_per_symbol_tx)) def get_baud_rate_downlink(self):
return self.baud_rate_downlink
def set_baud_rate_downlink(self, baud_rate_downlink):
self.baud_rate_downlink = baud_rate_downlink
self.set_modulation_index_downlink(self.deviation / (self.baud_rate_downlink / 2.0))
self.analog_quadrature_demod_cf_0_0.set_gain(((self.first_stage_samp_rate_rx) / self.baud_rate_downlink)/(math.pi*self.modulation_index_downlink))
self.digital_clock_recovery_mm_xx_0.set_omega(self.first_stage_samp_rate_rx/self.baud_rate_downlink)
def get_tx_frequency(self): def get_tx_frequency(self):
return self.tx_frequency return self.tx_frequency
@ -270,7 +280,7 @@ class upsat_transceiver_cli(gr.top_block):
self.analog_sig_source_x_0.set_sampling_freq(self.samp_rate_tx) self.analog_sig_source_x_0.set_sampling_freq(self.samp_rate_tx)
self.osmosdr_sink_0.set_sample_rate(self.samp_rate_tx) self.osmosdr_sink_0.set_sample_rate(self.samp_rate_tx)
self.osmosdr_sink_0.set_bandwidth(self.samp_rate_tx, 0) self.osmosdr_sink_0.set_bandwidth(self.samp_rate_tx, 0)
self.pfb_arb_resampler_xxx_0.set_rate(self.samp_rate_tx / (self.baud_rate * self.samples_per_symbol_tx)) self.pfb_arb_resampler_xxx_0.set_rate(self.samp_rate_tx / (self.baud_rate_uplink * self.samples_per_symbol_tx))
def get_rx_frequency(self): def get_rx_frequency(self):
return self.rx_frequency return self.rx_frequency
@ -279,13 +289,19 @@ class upsat_transceiver_cli(gr.top_block):
self.rx_frequency = rx_frequency self.rx_frequency = rx_frequency
self.osmosdr_source_0.set_center_freq(self.rx_frequency - self.lo_offset, 0) self.osmosdr_source_0.set_center_freq(self.rx_frequency - self.lo_offset, 0)
def get_modulation_index(self): def get_modulation_index_uplink(self):
return self.modulation_index return self.modulation_index_uplink
def set_modulation_index(self, modulation_index): def set_modulation_index_uplink(self, modulation_index_uplink):
self.modulation_index = modulation_index self.modulation_index_uplink = modulation_index_uplink
self.analog_frequency_modulator_fc_0.set_sensitivity((math.pi*self.modulation_index) / self.samples_per_symbol_tx) self.analog_frequency_modulator_fc_0.set_sensitivity((math.pi*self.modulation_index_uplink) / self.samples_per_symbol_tx)
self.analog_quadrature_demod_cf_0_0.set_gain(((self.first_stage_samp_rate_rx) / self.baud_rate)/(math.pi*self.modulation_index))
def get_modulation_index_downlink(self):
return self.modulation_index_downlink
def set_modulation_index_downlink(self, modulation_index_downlink):
self.modulation_index_downlink = modulation_index_downlink
self.analog_quadrature_demod_cf_0_0.set_gain(((self.first_stage_samp_rate_rx) / self.baud_rate_downlink)/(math.pi*self.modulation_index_downlink))
def get_interp_taps(self): def get_interp_taps(self):
return self.interp_taps return self.interp_taps
@ -299,8 +315,8 @@ class upsat_transceiver_cli(gr.top_block):
def set_first_stage_samp_rate_rx(self, first_stage_samp_rate_rx): def set_first_stage_samp_rate_rx(self, first_stage_samp_rate_rx):
self.first_stage_samp_rate_rx = first_stage_samp_rate_rx self.first_stage_samp_rate_rx = first_stage_samp_rate_rx
self.analog_quadrature_demod_cf_0_0.set_gain(((self.first_stage_samp_rate_rx) / self.baud_rate)/(math.pi*self.modulation_index)) self.analog_quadrature_demod_cf_0_0.set_gain(((self.first_stage_samp_rate_rx) / self.baud_rate_downlink)/(math.pi*self.modulation_index_downlink))
self.digital_clock_recovery_mm_xx_0.set_omega(self.first_stage_samp_rate_rx/self.baud_rate) self.digital_clock_recovery_mm_xx_0.set_omega(self.first_stage_samp_rate_rx/self.baud_rate_downlink)
def argument_parser(): def argument_parser():