(meteorobs) [radiometeoren] Question about airplane and automatic counting Spectrum Lab

[ernottp]

Hi,
Maarten Vanleenhove wrote a script for Spectrum Lab in which he it tries to
avoid false detections due to aircrafts.
His url is:
http://www.supernovae.be/meteorcounting
However, errors occur.
Following him: "When two aircrafts reflections merge, the script will, due
to the signal width, assume a meteor was picked up. When large meteors
appear, sometimes the meteors will be double counted"

I  do not use this script because we detect too many intersections of
aircrafts (beacon at Dourbes in Belgium 49.97Mz)

Pierre Ernotte






2013/9/11 Raydel Abreu (CM2ESP) <cm2esp at gmail.com>

> Hello all,
>
> Recently, by September 6th I was able to migrate my radio forward scatter
> system from 187 MHz TV to 61 MHz TV. Obviously as the frequency is lower a
> very high increment in rates is present.
>
> With the previous system a manual counting was performed so false
> positives by airplane traces were ignored. As my new system is peaking 150
> meteor traces by hour as an average manual counting is impossible.
>
> A modified script for SpectrumLab based on the meteor_test distributed on
> the software installation package was written to track the weak but
> sporadic present direct signal carrier and it works very great.
>
> However, at least one or two times a day some airplanes gets into the
> working pass-band and produces a lot of false positives; producing false
> "hotspots" which difficult to identified as airplanes produced or real
> meteors outburst like the one recently detected by some members.
>
> Any advice or tips??? Or a recommended better script to deal with this
> "airplane outburst". The happening of this problem is very seldom, but
> still affecting data quality. See efficiency and the "hotspots" in the
> attached picture.
>
> Thanks and best wishes,
>
> Raydel, CM2ESP
> Havana, Cuba.
>
> [image: Imágenes integradas 1]
>
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