01-Mar-2017_shell_script_&_Python_code_to_decode_LMS-6_radiosondes

csv2kml.py

#!/usr/bin/python2.7

#
# to run:  ./csv2kml.py   from within working directory where this script & lms6 decoder files are located
#                          NOTE:  ./data/lat-long-alt.csv files must already exist (is created by rf2csv.sh script)
#

#
# using "while" to loop program until broken out w/ CTL-c
#
while True:

#
# delete non-ascii characters
#
  import unicodedata
  import codecs
  infile = codecs.open('./data/lat-long-alt.csv','r',encoding='utf-8',errors='ignore')
  outfile = codecs.open('./data/lat-long-alt--only-ascii.csv','w',encoding='utf-8',errors='ignore')

  for line in infile.readlines():
     for word in line.split():
        outfile.write(word+" ")
     outfile.write("\n")

  infile.close()
  outfile.close()

#
# delete blank lines
#
  with open("./data/lat-long-alt--only-ascii.csv","r") as f, open("./data/lat-long-alt--no-blank-lines.csv","w") as outfile:
   for i in f.readlines():
         if not i.strip():
             continue
         if i:
             outfile.write(i) 
#
# from each line in csv file, extract long, lat, & alt;  save to properly formatted kml file
#
  import csv
  import simplekml

  inputfile = csv.reader(open('./data/lat-long-alt--no-blank-lines.csv','r'))
  kml=simplekml.Kml()

  style = simplekml.Style()
  style.iconstyle.icon.href = 'http://maps.google.com/mapfiles/kml/shapes/shaded_dot.png'
  style.iconstyle.color = simplekml.Color.red

  for row in inputfile:
	pnt = kml.newpoint()
	pnt.coords = [(row[1],row[0],row[2])]
	pnt.style = style
	pnt.extrude = 1
	pnt.altitudemode = simplekml.AltitudeMode.relativetoground
  
  kml.networklinkcontrol.minrefreshperiod = 20

#
# NOTE: adjust KML save file/folder detail to suit your environment
#

  kml.save('/home/k4kdr/Dropbox/Public/kml/k4kdr-radiosonde-track.kml')

#
# echo current time onto screen
#
  import datetime
  now = datetime.datetime.now()
  print "Last KML update : ",
  print now.strftime("%Y-%m-%d %H:%M:%S")

#
# pause program loop for 15 seconds
#
  import time
  time.sleep(15) # delays for 15 seconds

rf2csv.sh

#!/bin/bash

#
# Monitors audio from SDR or recorded file; decodes lms-6 radiosonde telemetry; writes output to screen & saves in CSV file
#   NOTE:  "stdbuf -oL" command used to limit buffer to a single line
#
#   LMS6 decoder application from:  https://github.com/rs1729/RS
#

#
# to run:  ./rf2csv.sh   from within working directory where this script & lms6 decoder files are located
#

#
# make ./data directory if it does not already exist
#
mkdir -p data

sox -d -t wav - lowpass 2600 2>/dev/null | stdbuf -oL ./lms6-decoder -v | stdbuf -oL tee /dev/tty | stdbuf -oL cut -c46-54,63-72,82-89 --output-delimiter=',' > ./data/lat-long-alt.csv
#