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satpredict.py
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90
satpredict.py
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import predict
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import json
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import sys
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import datetime
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frequencies = {'NOAA-15':'137.620M', 'NOAA-18':'137.9125M', 'NOAA-19':'137.10M', 'METEOR-M2':'137.925M', 'ISS':'145.80M' } #Meteor M2 is also on 137.1M
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tle_data = json.load(open('sat_tle.txt'))
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default_predictions = 1
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default_min_elevation = 30
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suppress_low_passes = False
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pass_elevation = default_min_elevation
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if( len(sys.argv) > 1 ):
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pass_elevation = int(sys.argv[1])
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if( pass_elevation == '' ):
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pass_elevation = default_min_elevation
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predictions = default_predictions
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if( len(sys.argv) > 2):
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predictions = int(sys.argv[2])
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if( predictions == '' ):
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predictions = default_predictions
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if( len(sys.argv) > 3 ):
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suppress_low_passes = True
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def convert_time( unixtime ):
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return datetime.datetime.fromtimestamp(
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int(unixtime)
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).strftime('%H:%M %Y-%m-%d')
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def convert_time_short( unixtime ):
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return datetime.datetime.fromtimestamp(
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int(unixtime)
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).strftime('%M')
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def get_sat( sat ):
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return sat + '\n' + tle_data[sat]
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qth = (49.32, 123.42, 49) # lat (N), long (W), alt (meters)
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qth_nw = (51.32, 125.42, 49)
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qth_se = (47.32, 121.42, 49)
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data = {}
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for sat, freq in frequencies.iteritems():
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name = predict.observe(get_sat(sat), qth)['name'].strip()
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t = predict.transits(get_sat(sat), qth)
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t_nw = predict.transits(get_sat(sat), qth_nw)
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t_se = predict.transits(get_sat(sat), qth_se)
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count = 0
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while ( count < predictions ):
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p = t.next()
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p_nw = t_nw.next()
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p_se = t_se.next()
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while (p.peak()['elevation'] < default_min_elevation):
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p = t.next()
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p_nw = t_nw.next()
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p_se = t_se.next()
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if( not suppress_low_passes ):
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print name, "pass too low, recalculating"
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data[name] = {}
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data[name]['frequency'] = freq
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data[name]['start_unix'] = p.start
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data[name]['start'] = convert_time(data[name]['start_unix'])
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data[name]['duration_seconds'] = int(p.duration())
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data[name]['duration_minutes'] = convert_time_short(data[name]['duration_seconds'])
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data[name]['elevation'] = p.peak()['elevation']
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data[name]['direction'] = 'S' #Assume northbound
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if( int(p_nw.start) > int(p.start) and int(p.start) > int(p_se.start) ): #This is the direction the satellite is travelling TO, not from.
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data[name]['direction'] = 'N'
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print name, 'next pass at:', data[name]['start'], 'at', data[name]['elevation'], 'degrees.', data[name]['direction'] + '-bound'
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count = count + 1
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import json
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with open('satpredict.txt', 'w') as fp:
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json.dump(data, fp, indent=4)
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26
sats.sh
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26
sats.sh
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#!/bin/bash
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SAT=$1
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TIEMSTAMP=$(date +%s)
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FILENAME="sat_schedules/schd-${SAT}-${TIEMSTAMP}"
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rm reschd-$SAT.txt
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echo "#!/bin/bash" > $FILENAME
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echo 'bash wol_fastserv.sh' >> $FILENAME
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python satpredict.py 25 1 true
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python satschedule.py $SAT >> $FILENAME
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echo "sleep 30" >> $FILENAME
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echo "echo bash sats.sh ${SAT} > reschd-${SAT}.txt" >> $FILENAME
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echo "at now + 30 minutes -q z -M -f reschd-${SAT}.txt" >> $FILENAME
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echo "rm ${FILENAME}" >> $FILENAME
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TIEM=$(<"${SAT}_sched.txt")
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echo $TIEM
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at -M -m $TIEM < $FILENAME
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rm "${SAT}_sched.txt"
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104
satschedule.py
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104
satschedule.py
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import array
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import json
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import sys
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import time
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import datetime
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ppmshift = '1'
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name = sys.argv[1].upper()
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input_sample_rate = '48000'
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output_sample_rate = '11025'
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gain = '40'
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gain_lower_pass = gain
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gain_lower_pass_requirement = 40
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data = json.load(open('satpredict.txt'))
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af_folder = '/tmp/'
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output_folder = '~/sat_output/'
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wxtoimg_options = ['HVCT', 'MCIR', 'NO'] #['ZA', 'HVCT', 'therm']
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rtl_fm_options = { '-f':data[name]['frequency'],
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'-M':'fm',
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'-p':ppmshift,
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'-F':'9',
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'-s':input_sample_rate,
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'-g':gain,
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'-E': 'dc',
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'-A': 'fast' }
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rtl_power_options = { '-f':'137M:138M:4k',
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'-g':gain,
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'-i':'1s',
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'-e':str(data[name]['duration_seconds']) + 's',
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'-p':ppmshift,
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'-c':'0.2' }
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sox_options = [ '-b16',
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'-c1',
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'-V1',
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'-es',
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'-r ' + input_sample_rate,
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'-t raw' ]
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def filename(satname, part):
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if(part != ''):
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return satname + '_' + part + '.wav'
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return satname + '.wav'
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def datestamp( unixtime ):
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return datetime.datetime.fromtimestamp(
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int(unixtime)
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).strftime('%Y%m%d-%H%M_')
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def convert_time( unixtime ):
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return datetime.datetime.fromtimestamp(
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int(unixtime)
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).strftime('%H:%M %Y-%m-%d')
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if( data[name]['elevation'] < gain_lower_pass_requirement ):
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gain = gain_lower_pass
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timeoutstr = 'timeout ' + str(data[name]['duration_seconds'])
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filename = datestamp(data[name]['start_unix']) + name + '_' + data[name]['direction'] + str(int(data[name]['elevation']))
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if( len(wxtoimg_options) == 0 ):
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rtlpower = 'rtl_power -f 137M:138M:4k -g ' + gain + ' -i 1s -e ' + str(data[name]['duration_seconds']) + 's -p ' + ppmshift + ' -c 0.2 ' + output_folder + filename + '.csv'
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heatmap = 'python heatmap.py ' + output_folder + name + '_' + data[name]['direction'] + str(int(data[name]['elevation'])) + '_' + timestamp + '.csv ' + output_folder + name + '_' + data[name]['direction'] + str(int(data[name]['elevation'])) + '_' + timestamp + '.png'
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print timeoutstr, rtlpower
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print heatmap
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print 'bash ftp.sh ' + output_folder + name + '_' + data[name]['direction'] + str(int(data[name]['elevation'])) + '_' + timestamp + '.png'
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else:
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timeoutstr = 'timeout ' + str(data[name]['duration_seconds'])
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rtlstr = 'rtl_fm'
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for k, v in rtl_fm_options.iteritems():
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rtlstr = rtlstr + ' ' + k + ' ' + v
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soxstr = 'sox'
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for v in sox_options:
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soxstr = soxstr + ' ' + v
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print timeoutstr, rtlstr, af_folder + filename + '.raw'
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print soxstr, af_folder + filename + '.raw', af_folder + filename + '.wav', 'rate 11025'
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print 'touch -r', af_folder + filename + '.raw', af_folder + filename + '.wav'
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print 'bash', 'fastserv_sat_render.sh', af_folder + filename + '.wav', data[name]['start_unix']+60
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f = open(name + '_sched.txt', 'w')
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f.write(convert_time(data[name]['start_unix']))
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#for opt in wxtoimg_options:
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# filename = datestamp(data[name]['start_unix']) + name + '_' + data[name]['direction'] + str(int(data[name]['elevation']))
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#
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# print 'wxtoimg -' + data[name]['direction'] + ' -e', opt, af_folder + filename + '.wav', output_folder + filename + '_' + opt + '.png'
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#
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# if( data[name]['direction'] == "S" ): #southbound images are upside down
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# print 'convert', output_folder + filename + '_' + opt + '.png', '-rotate 180', output_folder + filename + '_' + opt + '.png'
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#
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# print 'bash ftp.sh', output_folder + filename + '_' + opt + '.png'
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