-
Notifications
You must be signed in to change notification settings - Fork 25
/
top_block.py
202 lines (169 loc) · 9.15 KB
/
top_block.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
#!/usr/bin/env python2
# -*- coding: utf-8 -*-
##################################################
# GNU Radio Python Flow Graph
# Title: Top Block
# Generated: Mon Oct 28 01:00:35 2019
##################################################
from gnuradio import blocks
from gnuradio import eng_notation
from gnuradio import fft
from gnuradio import gr
from gnuradio.eng_option import eng_option
from gnuradio.fft import window
from gnuradio.filter import firdes
from optparse import OptionParser
import numpy as np
import osmosdr
import time
class top_block(gr.top_block):
def __init__(self, c_freq=1420000000, nbin=1000, nchan=1024, obs_time=60, samp_rate=2400000):
gr.top_block.__init__(self, "Top Block")
##################################################
# Parameters
##################################################
self.c_freq = c_freq
self.nbin = nbin
self.nchan = nchan
self.obs_time = obs_time
self.samp_rate = samp_rate
##################################################
# Variables
##################################################
self.sinc_sample_locations = sinc_sample_locations = np.arange(-np.pi*4/2.0, np.pi*4/2.0, np.pi/nchan)
self.sinc = sinc = np.sinc(sinc_sample_locations/np.pi)
self.custom_window = custom_window = sinc*np.hamming(4*nchan)
##################################################
# Blocks
##################################################
self.fft_vxx_0 = fft.fft_vcc(nchan, True, (window.blackmanharris(nchan)), True, 1)
self.blocks_stream_to_vector_0_2 = blocks.stream_to_vector(gr.sizeof_gr_complex*1, nchan)
self.blocks_stream_to_vector_0_1 = blocks.stream_to_vector(gr.sizeof_gr_complex*1, nchan)
self.blocks_stream_to_vector_0_0 = blocks.stream_to_vector(gr.sizeof_gr_complex*1, nchan)
self.blocks_stream_to_vector_0 = blocks.stream_to_vector(gr.sizeof_gr_complex*1, nchan)
self.blocks_multiply_const_vxx_0_0_0_0 = blocks.multiply_const_vcc((custom_window[0:nchan]))
self.blocks_multiply_const_vxx_0_0_0 = blocks.multiply_const_vcc((custom_window[nchan:2*nchan]))
self.blocks_multiply_const_vxx_0_0 = blocks.multiply_const_vcc((custom_window[2*nchan:3*nchan]))
self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vcc((custom_window[-nchan:]))
self.blocks_integrate_xx_0 = blocks.integrate_ff(nbin, nchan)
self.blocks_head_0 = blocks.head(gr.sizeof_gr_complex*1, int(obs_time*samp_rate))
self.blocks_file_sink_0 = blocks.file_sink(gr.sizeof_float*nchan, '/home/pictor/Desktop/pictortelescope/observation.dat', True)
self.blocks_file_sink_0.set_unbuffered(False)
self.blocks_delay_0_1 = blocks.delay(gr.sizeof_gr_complex*1, nchan)
self.blocks_delay_0_0 = blocks.delay(gr.sizeof_gr_complex*1, nchan*2)
self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex*1, nchan*3)
self.blocks_complex_to_mag_squared_0 = blocks.complex_to_mag_squared(nchan)
self.blocks_add_xx_0 = blocks.add_vcc(nchan)
self.RTL820T = osmosdr.source( args="numchan=" + str(1) + " " + '' )
self.RTL820T.set_sample_rate(samp_rate)
self.RTL820T.set_center_freq(c_freq, 0)
self.RTL820T.set_freq_corr(0, 0)
self.RTL820T.set_dc_offset_mode(0, 0)
self.RTL820T.set_iq_balance_mode(0, 0)
self.RTL820T.set_gain_mode(False, 0)
self.RTL820T.set_gain(30, 0)
self.RTL820T.set_if_gain(30, 0)
self.RTL820T.set_bb_gain(30, 0)
self.RTL820T.set_antenna('', 0)
self.RTL820T.set_bandwidth(0, 0)
##################################################
# Connections
##################################################
self.connect((self.RTL820T, 0), (self.blocks_head_0, 0))
self.connect((self.blocks_add_xx_0, 0), (self.fft_vxx_0, 0))
self.connect((self.blocks_complex_to_mag_squared_0, 0), (self.blocks_integrate_xx_0, 0))
self.connect((self.blocks_delay_0, 0), (self.blocks_stream_to_vector_0_2, 0))
self.connect((self.blocks_delay_0_0, 0), (self.blocks_stream_to_vector_0_0, 0))
self.connect((self.blocks_delay_0_1, 0), (self.blocks_stream_to_vector_0_1, 0))
self.connect((self.blocks_head_0, 0), (self.blocks_delay_0, 0))
self.connect((self.blocks_head_0, 0), (self.blocks_delay_0_0, 0))
self.connect((self.blocks_head_0, 0), (self.blocks_delay_0_1, 0))
self.connect((self.blocks_head_0, 0), (self.blocks_stream_to_vector_0, 0))
self.connect((self.blocks_integrate_xx_0, 0), (self.blocks_file_sink_0, 0))
self.connect((self.blocks_multiply_const_vxx_0, 0), (self.blocks_add_xx_0, 0))
self.connect((self.blocks_multiply_const_vxx_0_0, 0), (self.blocks_add_xx_0, 1))
self.connect((self.blocks_multiply_const_vxx_0_0_0, 0), (self.blocks_add_xx_0, 2))
self.connect((self.blocks_multiply_const_vxx_0_0_0_0, 0), (self.blocks_add_xx_0, 3))
self.connect((self.blocks_stream_to_vector_0, 0), (self.blocks_multiply_const_vxx_0, 0))
self.connect((self.blocks_stream_to_vector_0_0, 0), (self.blocks_multiply_const_vxx_0_0_0, 0))
self.connect((self.blocks_stream_to_vector_0_1, 0), (self.blocks_multiply_const_vxx_0_0, 0))
self.connect((self.blocks_stream_to_vector_0_2, 0), (self.blocks_multiply_const_vxx_0_0_0_0, 0))
self.connect((self.fft_vxx_0, 0), (self.blocks_complex_to_mag_squared_0, 0))
def get_c_freq(self):
return self.c_freq
def set_c_freq(self, c_freq):
self.c_freq = c_freq
self.RTL820T.set_center_freq(self.c_freq, 0)
def get_nbin(self):
return self.nbin
def set_nbin(self, nbin):
self.nbin = nbin
def get_nchan(self):
return self.nchan
def set_nchan(self, nchan):
self.nchan = nchan
self.set_custom_window(self.sinc*np.hamming(4*self.nchan))
self.set_sinc_sample_locations(np.arange(-np.pi*4/2.0, np.pi*4/2.0, np.pi/self.nchan))
self.blocks_multiply_const_vxx_0_0_0_0.set_k((self.custom_window[0:self.nchan]))
self.blocks_multiply_const_vxx_0_0_0.set_k((self.custom_window[self.nchan:2*self.nchan]))
self.blocks_multiply_const_vxx_0_0.set_k((self.custom_window[2*self.nchan:3*self.nchan]))
self.blocks_multiply_const_vxx_0.set_k((self.custom_window[-self.nchan:]))
self.blocks_delay_0_1.set_dly(self.nchan)
self.blocks_delay_0_0.set_dly(self.nchan*2)
self.blocks_delay_0.set_dly(self.nchan*3)
def get_obs_time(self):
return self.obs_time
def set_obs_time(self, obs_time):
self.obs_time = obs_time
self.blocks_head_0.set_length(int(self.obs_time*self.samp_rate))
def get_samp_rate(self):
return self.samp_rate
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.blocks_head_0.set_length(int(self.obs_time*self.samp_rate))
self.RTL820T.set_sample_rate(self.samp_rate)
def get_sinc_sample_locations(self):
return self.sinc_sample_locations
def set_sinc_sample_locations(self, sinc_sample_locations):
self.sinc_sample_locations = sinc_sample_locations
self.set_sinc(np.sinc(self.sinc_sample_locations/np.pi))
def get_sinc(self):
return self.sinc
def set_sinc(self, sinc):
self.sinc = sinc
self.set_custom_window(self.sinc*np.hamming(4*self.nchan))
self.set_sinc(np.sinc(self.sinc_sample_locations/np.pi))
def get_custom_window(self):
return self.custom_window
def set_custom_window(self, custom_window):
self.custom_window = custom_window
self.blocks_multiply_const_vxx_0_0_0_0.set_k((self.custom_window[0:self.nchan]))
self.blocks_multiply_const_vxx_0_0_0.set_k((self.custom_window[self.nchan:2*self.nchan]))
self.blocks_multiply_const_vxx_0_0.set_k((self.custom_window[2*self.nchan:3*self.nchan]))
self.blocks_multiply_const_vxx_0.set_k((self.custom_window[-self.nchan:]))
def argument_parser():
parser = OptionParser(usage="%prog: [options]", option_class=eng_option)
parser.add_option(
"", "--c-freq", dest="c_freq", type="eng_float", default=eng_notation.num_to_str(1420000000),
help="Set c_freq [default=%default]")
parser.add_option(
"", "--nbin", dest="nbin", type="intx", default=1000,
help="Set nbin [default=%default]")
parser.add_option(
"", "--nchan", dest="nchan", type="intx", default=1024,
help="Set nchan [default=%default]")
parser.add_option(
"", "--obs-time", dest="obs_time", type="eng_float", default=eng_notation.num_to_str(60),
help="Set obs_time [default=%default]")
parser.add_option(
"", "--samp-rate", dest="samp_rate", type="eng_float", default=eng_notation.num_to_str(2400000),
help="Set samp_rate [default=%default]")
return parser
def main(top_block_cls=top_block, options=None):
if options is None:
options, _ = argument_parser().parse_args()
tb = top_block_cls(c_freq=options.c_freq, nbin=options.nbin, nchan=options.nchan, obs_time=options.obs_time, samp_rate=options.samp_rate)
tb.start()
tb.wait()
if __name__ == '__main__':
main()