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Echoes is an experimental spectral analysis software designed to detect, count and analyze the radio echoes produced by meteors entering the atmosphere, an activity known as meteor scatter.

With Echoes it is possible to set up an autonomous entirely digital station without the use of additional software and which is able to capture spectra of individual echoes and generate statistical reports automatically. The program is equipped with filter functions to discard false positives due - for example - to lightning and manages an archive of events, divided by days and of adjustable length in order to meet the storage capacity of the system and thus avoid filling up all available space.

Unlike general purpose programs such as SDR#, HDSDR, Winrad etc, which are generic multi-band and multi-mode radio receivers, Echoes does not demodulate or decode the radio signal, so the spectrum it produces is exclusively radio spectrum and automatic capture of echoes is based on the total received power peaks. Since there is no demodulation, there is no audio listening except for a notification sound when an event has been logged.

Finally, Echoes is able to operate, albeit with reduced performance and functionality, even on older PCs, mini or micro such as the Raspberry-PI, both in a Windows and Linux environment.

LATEST NEWS

Feb 07, 2024
Released Ebrow 0.1.70.
Ebrow 0.1.69 was so buggy that it couldn't even start, even after a successful install. The solution was easily found but this time - to avoid another sensational flop - I decided to wait a couple of days checking the fix on the GABB.it station to make sure it worked. Now it is available on the consuete channels (SourceForge, PyPI).

Feb 03, 2024
Released Ebrow 0.1.69.
During the month of January I had to follow users eager to publish their counts on the RMOB server. So, thanks to Tarcisio Bee (Astro Calina), Yves Robin, Frank Tyrlik and David Krembel and their reports , some flaws in Ebrow were found and corrected in four releases from 0.1.64 to 0.1.68. The 0.1.69 fixes instead a bug regarding the last functionality added, the sporadic background calculation and its subtraction from statistic counts.
For users who want to install 0.1.69 in place of 0.1.63: I recommend deleting the keys
sporadicDates=
sporadicBackgroundDaily=
sporadicBackgroundByHour=
sporadicBackgroundBy10min=
from ebrow.ini, because their format has changed in 0.1.69 and the contents must be recalculated.
For Windows users: the most up-to-date configuration today is Echoes 0.54 + Ebrow 0.1.69, please to install these packages separately to stay tuned with development, since the bundled package won't be regenerated until the next Echoes release.

Jan 03, 2024
Released Echoes 0.54 + Ebrow 0.1.63.
Sources and binaries are available for download from SourceForge, in the Files section.
The changes made are the follows:
Echoes 0.54:
-Fixed the bug announced last December 12th regarding the failure to delete expired screenshots from the database.
-Fixed the wrong counting of days to keep images in the database, before deleting them upon expiration. The error caused the images to be deleted a day earlier than required.
>Added two new controls on the main window, Preferences tab:
With a checkbox, the possibility of using the old ASCII format for dumps .DAT is given instead of the newer and more compact binary format DATB, because the first one can be read with GNUplot and other math tools, while the latter is readable only with Ebrow.
A second control allows to set a delay in microseconds between the sending of subsequent UDP datagrams. This parameter is considered only when using the UDP device.
Ebrow 0.1.63:
-The version number in the Preferences tab is now complete and displays all three version number fields (0.1.63 instead of 0.1.x).
-Implemented the possibility of calculating the Daily Sporadic Background with resolution up to 10 minutes. The calculation is performed on specified day intervals and by applying the underdense and overdense filters separately.
-Statistical tables and graphs can take this sporadic background into account and subtract it from the displayed counts. Depending on whether you are filtering the data by overdense, underdense or both, the sporadic background calculated with the matching filters will be subtracted.
-Fixed bug that caused a crash if you tried to open a freshly created database with no data inside.
-Fixed bug in report generation, the station logo was not copied into the report assets, resulting in a message "logo not found".
Please note that the Raspberry PI images won't be updated. Who desires to try them, will need to update the echoes+ebrow packages afterwards.
In the next days, the documentation of the new features will be added to the manual.

Nov 19, 2023
Released Ebrow 0.1.62.
Starting from this version, the Create Subset button is fully functional. Its purpose is to save a portion of the open database, which can later be managed more quickly with Ebrow.
see Creating subsets.

Nov 17, 2023
Released Echoes 0.53 + Ebrow 0.1.61.
Starting from this version, the format of the dump files changes: it will no longer be an ASCII file but a more compact binary file with the .DATB extension. Consequently, Ebrow 0.1.61 or later must be used to view the dumps of both formats (DAT | DATB).

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