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Meteor Logger

This newly developed piece of software detects audio signals from radio meteors via sound card and records them with a high frequency and temporal resolution. For this purpose signal detection relies on identifying signal signatures in the frequency domain instead using an amplitude threshold. A tabular onscreen output of detected meteor signals gives an immediate feedback. Because many meteor enthusiast live in populated areas polluted by man made noise a measure is implemented to notch a strong interference line. The integrated help gives important advice, please read it. For further processing the data are written to disc as a .csv-file. At least it is necessary to reduce interference and conflate fragmented meteor signals. This and much more achieves the additional program "Process Data", see below. "Meteor Logger" is based on python 3.

A detailed description of "Meteor Logger" is published in the Journal of the International Meteor Organization: Kaufmann W. (2017): "New radio meteor detecting and logging software". WGN, The Journal of the IMO, 45:4, 67-72. You can read the article also here.

Screenshot of the Graphical User Interface

Download:

Two versions of "Meteor Logger" are provided for download:

  1. A Windows only cythonized version for enhanced speed. It is running on a 32-bit version of python 3 exclusively. Download it here.
  2. The original python script that should run on a 32- or 64-bit version of python 3 at the expense of lower speed. Download it here.

Actual program version is 1.21a (2017-09-08).

Requirements:

Python 3.4 must be installed on your computer. I have not tested whether "Meteor Logger" also runs under former versions of python 3. At least the following modules are required:

It is recommended to install a complete python-package. I developed "Meteor Logger" with WinPython and used the 32bit version 3.4.4.6Qt5

Process Data

This piece of software is also based on python 3. It reads the raw data produced by "Meteor Logger". It allows to filter out automatically most of interference and conflates fragmented meteor signals. The data can be plotted (frequency vs. time and power vs. time). It is possible to calculate hourly count rates/radio zenithal hourly rates and display them as histogram. The graph of the logarithmic cumulative power distribution may be displayed. Also frequency gradients of the head echoes can be computed and were shown as histogram and scatterplot. Different data extraction features are provided for further analysis (all data exports are .csv-files). Also a RMOB-compatible file export is implemented to feed the data to Cologramme Lab. For a detailed description of all features of "Process Data" see the manual. If you will make use of this software please study the manual thouroghly to get reliable results.

Screenshot of the Graphical User Interface of <Process Data>

Download:

The python script of "Process Data" can be downloaded here. Actual program version is 1.55 (2017-10-11).

Requirements:

Python 3.4 must be installed on your computer. I have not tested whether "Process Data" also runs under former versions of python 3. At least the following modules are required:

It is recommended to install a complete python-package. I developed "Process Data" with WinPython and used the 32bit version 3.4.4.6Qt5. Pyephem is not part of this package. It can be downloaded here.

License:

copyright 2017 Wolfgang Kaufmann

These programs are free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, version 3 of the License. These programs are distributed in the hope that they will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program. If not, see here.