Re: Meteor Detection using a Raspberry Pi
Hello
Tracy
Thanks
for your notes and links on Radio meteor detection. I note that
the
various references relate to using the Graves radar system which
is
located near Dijon. Many of us will have started our meteor
observations using Graves.
Graves has a switched beam
that scans from from East, through South to West so is designed
to
cover those directions from Dijon. Graves runs very high power
so it
does provide some coverage to the north by one mechanism or
another
including radiation from the back of the beam ( although that
description is not strictly accurate) or, possibly by
tropospheric
back scatter. This means its coverage to the North is variable
and
not clearly defined.
The
UK meteor beacon, located at the Sherwood Observatory of the
Mansfield and Sutton Astronomical Society, provides coverage for
the
known region above the UK and I would encourage all with a
serious
interest in radio detection of meteors over the UK and perhaps
coordination with the UKMON optical system to make use of it.
More
details can be found at
.
All the best
Brian
On 15/05/2024 12:37, Tracey Snelus
wrote:
Hello?
I believe that people are already successfully
detecting meteors via radio backscatter using raspberry pi.
I’ve attached some links to projects that I have followed.?
I’ve not tried a pi based solution yet as my
pc does the trick just fine but it certainly looks
achievable.?
If you were also considering using pi for
meteor. Video detection then UKMON and the global meteor
network are already very successfully running a pi based
solution.?
Kind Regards
Miss Tracey Snelus?
Hi All,
I had a
brief conversation with John Cook at the BAA Winchester
Weekend about the feasibility of using a Raspberry Pi,
SDR dongle and appropriate software to detect meteors,
he suggested I post here.
?
The last
time I did meteor detection I was using a custom script
I’d created in SpectrumLab (see here )
with an X86 laptop and handheld scanner. At the time, I
had investigated using a Raspberry Pi but they were
pretty new, x86 software wasn’t compatible and the
project didn’t go anywhere.
?
Since then,
USB SDR Dongles have been invented, Raspberry Pis are
now on version 5 and the Pi 5 is significantly more
powerful than the Win 98 Laptop I was using, has more
memory, faster disk and network access etc. Windows has
also come to ARM, I believe there is a Just in Time
(JIT) re-complier that recompiles x86 software on the
fly (JIT compilers are very fast), but I have no
experience of this, also Linux SW has developed a huge
amount so there might even be a mature Linux software
solution (my main Laptop is Linux).
?
Anyway - I’m
now thinking of trying again, creating a meteor detector
to compliment the visual meteor detector my Astro
Society (Crayford) already runs. The concept is a
Raspberry Pi, USB SDR, and appropriate software. I’d
save the files to a NAS with remote cloud access so
members can share any post processing/collation for
reporting purposes.
?
Do you know
if anyone is already doing radio meteor detection on a
Raspberry Pi? If so can you point me to the details? I’m
also interested in compatible USB SDR’s and Compatible
Analysis Software (like Spectrum Lab) I’d like to know
this is possible because I don’t want to reinvent the
wheel and I don’t want to spend my societies cash
finding out it can’t be done! :-)
?
Thanks,
Simon.
|
Re: ?? Saturation of detector during aurora 10-11/5/2024
If a loose connection then why would data start flowing again next day?
Sent from
toggle quoted message
Show quoted text
Andy,
?
It's not your receiver saturating as the transmitter was off air between 7 and 8 on the 11th.
?
What puzzles me is that when the transmitter was off air at the same time on the 10th the output from
your receiver was higher than when the two large sids occurred. Did you have some local noise around that time?
?
On my traces the signal strength on the night of the 10th/11 was about the same as that on the 11th which you
show without any receiver problems.
?
Looks like a loose connection somewhere? Is it the same in the raw data?
?
Mark
|
Re: ?? Saturation of detector during aurora 10-11/5/2024
Andy,
?
It's not your receiver saturating as the
transmitter was off air between 7 and 8 on the 11th.
?
What puzzles me is that when the
transmitter was off air at the same time on the 10th the output from
your receiver was higher than when the two
large sids occurred. Did you have some local noise around that time?
?
On my traces the signal strength on the
night of the 10th/11 was about the same as that on the 11th which you
show without any receiver problems.
?
Looks like a loose connection somewhere? Is
it the same in the raw data?
?
Mark
|
?? Saturation of detector during aurora 10-11/5/2024
Hi All,
?
Please can you look at the question I have posed here on this link (on link so I can upload associated graphs to make question clear) – what are your thoughts?
?
?
Andy
|
Re: Anomalous SID 2024-05-17
??? I also have clear SIDs starting at
18:07, together with a matching magnetic signal. The SWPC weekly
bulletin should be available on Monday morning, so worth looking
at that to see if anything matches. There was a large flare a
couple of hours later.
John.
On 18/05/2024 13:57, Mark Edwards wrote:
toggle quoted message
Show quoted text
Looking more closely
at the plot for the
17th. To me more of a puzzle is the asymmetry.
The minimum height of
the ionosphere
appears to be around 08:00 rather than 12:00.
?
Mark
|
Re: Anomalous SID 2024-05-17
Looking more closely at the plot for the
17th. To me more of a puzzle is the asymmetry.
The minimum height of the ionosphere
appears to be around 08:00 rather than 12:00.
?
Mark
|
Re: Anomalous SID 2024-05-17
It's not unusual to see the VLF amplitudes
vary because the height of the ionosphere has been affected by a CME.
I have seen many of these at 37.5kHz (Grindavik)
on the path through the auroral halo to Iceland.
?
What is unusual, though is for the other
freqs. to be affected.
As you can see on the plot for 17th May, 37.5kHz
is affected at the same time as large changes in the mag field (as displayed by
the Mull Magnetometer in the
bottom three traces) both before and after
the event at 18:00. Whereas the other freqs. are only affected by the largest
particle input at 18:00.
?
Interestingly, the same effect was seen on
the 10th May, On that day the greatest mag change was between 20:00 and 21:00,
but on that occasion 37.5kHz was hardly
affected, whereas the path to Anthorn and Skelton (19.6 and 22.1kHz) showed all
the signs of the D-layer having
reformed overnight.
?
Mark
|
Re: Anomalous SID 2024-05-17
The same here, 49.5° North. Magnetometer shows a rise in magnetic
flux, the BlackForest Observatory (University Karlsruhe) too. I will
check my SID recordings tomorrow.
Martin Bertges
On 5/18/24 14:54, callum_potter wrote:
toggle quoted message
Show quoted text
I had a magnetic?spike at the same time.
Callum
UK Auroa Watch put out a red alert about then so
something was wag going on.
On 18/05/2024 13:34, Andrew Thomas wrote:
Yesterday at 18:07UTC I recorded a
clear SID event. There is no corresponding solar flare
at this time in the NOAA record and the X-ray flus is
flat.
The attached plot shows the signal
for Anthorn Skelton and Ramsloh. The green trace for
19.6kHz. 20.9kHz and 22.1kHz is recorded using a 0.4m
loop aerial and a sound card. The blue trace for 19.6kHz
(1.0m loop aerial) and 23.4kHz (0.6m loop aerial) are
recorded using UKRAA VLF receivers.
Did any other observers record the
same event? If so was it on the same frequencies or did
other stations show the same event.
Many thanks
Andrew Thomas
|
Re: Anomalous SID 2024-05-17
Hi Andrew,
Afraid I don't have an answer to your post, but I would very much appreciate it if you could possibly provide the settings you have used for Spectrum Lab. I have been having difficulty getting any sensible plots so far so an export of your settings file would be very much appreciated, as your plot looks very easy to read.
Regards
Dave
|
Re: Anomalous SID 2024-05-17
I had a magnetic?spike at the same time.
Callum
UK Auroa Watch put out a red alert about then so something was
wag going on.
On 18/05/2024 13:34, Andrew Thomas
wrote:
Yesterday at
18:07UTC I recorded a clear SID event. There is no corresponding
solar flare at this time in the NOAA record and the X-ray flus
is flat.
The attached plot
shows the signal for Anthorn Skelton and Ramsloh. The green
trace for 19.6kHz. 20.9kHz and 22.1kHz is recorded using a 0.4m
loop aerial and a sound card. The blue trace for 19.6kHz (1.0m
loop aerial) and 23.4kHz (0.6m loop aerial) are recorded using
UKRAA VLF receivers.
Did any other
observers record the same event? If so was it on the same
frequencies or did other stations show the same event.
Many thanks
Andrew Thomas
|
Re: Anomalous SID 2024-05-17
UK Auroa Watch put out a red alert about then so something was
wag going on.
On 18/05/2024 13:34, Andrew Thomas
wrote:
toggle quoted message
Show quoted text
Yesterday at
18:07UTC I recorded a clear SID event. There is no corresponding
solar flare at this time in the NOAA record and the X-ray flus
is flat.
The attached plot
shows the signal for Anthorn Skelton and Ramsloh. The green
trace for 19.6kHz. 20.9kHz and 22.1kHz is recorded using a 0.4m
loop aerial and a sound card. The blue trace for 19.6kHz (1.0m
loop aerial) and 23.4kHz (0.6m loop aerial) are recorded using
UKRAA VLF receivers.
Did any other
observers record the same event? If so was it on the same
frequencies or did other stations show the same event.
Many thanks
Andrew Thomas
|
Yesterday at 18:07UTC I recorded a clear SID event. There is no corresponding solar flare at this time in the NOAA record and the X-ray flus is flat.
The attached plot shows the signal for Anthorn Skelton and Ramsloh. The green trace for 19.6kHz. 20.9kHz and 22.1kHz is recorded using a 0.4m loop aerial and a sound card. The blue trace for 19.6kHz (1.0m loop aerial) and 23.4kHz (0.6m loop aerial) are recorded using UKRAA VLF receivers.
Did any other observers record the same event? If so was it on the same frequencies or did other stations show the same event.
Many thanks
Andrew Thomas
|
Re: Meteor Detection using a Raspberry Pi
To All,
During my review of the BATC website I found this page:??
I hope to get this version running on my equipment soon.
Regards,
Charley
Paul Nicholson ( in the UK ) has created a very capable set of tools called vlfrx-tools which run quite nicely on old PC's and Raspberry Pi's.
Don't let the VLF of vlfrx-tools fool you - these tools can be thought of general purpose building blocks. Once you have created an audio output from a receiver these tools can then process that audio using a sound card as input.
While the general focus is on VLF, ?he also monitors for meteors ?? ( as a start ).? ?
Paul frequents the ? VLF group /g/VLF/topics and quickly answers questions on his tools. He may be active in other groups including this one but couldn't say for certain.?
Something to consider if you are comfortable with command line apps and linux. It is always nice to have options.?
I have no first hand experience using vlfrx-tools for meteor detection however.?
cheers, Graham
|
Python for Muons#4 now on You Tube
Radio Astronomy Section Zoom Monday the 13th May 2024 Python for Muons#4 by Rupert Powell Video is now on YouTube Github for the code used in the Python for Muons course can be found
You can find links to previous meeting videos and associated materials
? Kind Regards John Berman
|
Re: Meteor Detection using a Raspberry Pi
Paul Nicholson ( in the UK ) has created a very capable set of tools called vlfrx-tools which run quite nicely on old PC's and Raspberry Pi's. Don't let the VLF of vlfrx-tools fool you - these tools can be thought of general purpose building blocks. Once you have created an audio output from a receiver these tools can then process that audio using a sound card as input. While the general focus is on VLF, ?he also monitors for meteors ?? ( as a start ).? ? Paul frequents the groups.io? VLF group /g/VLF/topics and quickly answers questions on his tools. He may be active in other groups including this one but couldn't say for certain.? Something to consider if you are comfortable with command line apps and linux. It is always nice to have options.? I have no first hand experience using vlfrx-tools for meteor detection however.? cheers, Graham
|
Re: Meteor Detection using a Raspberry Pi
Thanks for all the reading material, I have a bit to digest before I ask for more help, but thanks for the offer Brian. :-)
|
Re: Meteor Detection using a Raspberry Pi
Hello Simon
Yes take a look at ukmeteorbeacon.org.? The live stream is
supplied by receivers based on the SDR play RSPdx and a Raspberry
Pi.? You'll find a block diagram On the Observing GB3MBA pages.
The hardware and software is based on the BATC Portsdown see
.
All software is intended to be open source so you should not have
to re-invent the wheel. Currently we are streaming 4 or 5
receivers to but a local
display on a touch screen is also available. I'm not the best
person to provide more detail but if you contact me direct I'll
put you in touch with more help. The receivers in our network are
based on the RSPdx as this has better performance than the cheap
dongles and has the facility to lock it to a precision frequency
reference which means we can make precision Doppler measurements .
All the best
Brian
On 15/05/2024 12:14, SIMON via
groups.io wrote:
toggle quoted message
Show quoted text
Hi All,
I had a brief
conversation with John Cook at the BAA Winchester Weekend about
the feasibility of using a Raspberry Pi, SDR dongle and
appropriate software to detect meteors, he suggested I post
here.
?
The last time I did
meteor detection I was using a custom script I’d created in
SpectrumLab (see here )
with an X86 laptop and handheld scanner. At the time, I had
investigated using a Raspberry Pi but they were pretty new, x86
software wasn’t compatible and the project didn’t go anywhere.
?
Since then, USB SDR
Dongles have been invented, Raspberry Pis are now on version 5
and the Pi 5 is significantly more powerful than the Win 98
Laptop I was using, has more memory, faster disk and network
access etc. Windows has also come to ARM, I believe there is a
Just in Time (JIT) re-complier that recompiles x86 software on
the fly (JIT compilers are very fast), but I have no experience
of this, also Linux SW has developed a huge amount so there
might even be a mature Linux software solution (my main Laptop
is Linux).
?
Anyway - I’m now
thinking of trying again, creating a meteor detector to
compliment the visual meteor detector my Astro Society
(Crayford) already runs. The concept is a Raspberry Pi, USB SDR,
and appropriate software. I’d save the files to a NAS with
remote cloud access so members can share any post
processing/collation for reporting purposes.
?
Do you know if
anyone is already doing radio meteor detection on a Raspberry
Pi? If so can you point me to the details? I’m also interested
in compatible USB SDR’s and Compatible Analysis Software (like
Spectrum Lab) I’d like to know this is possible because I don’t
want to reinvent the wheel and I don’t want to spend my
societies cash finding out it can’t be done! :-)
?
Thanks,
Simon.
|
Re: Meteor Detection using a Raspberry Pi
For the video capture I fully recommend looking at the GMN pi based solution as it is pretty well automated, maintained and feeds into the global network so very well worth considering.?
Kind Regards
Miss Tracey Snelus?
Thanks for the info Tracey, I'll investigate, it sounds promising:-) our visual meteor station is PC based and an old video camera, at some point we will rebuild this, but whilst it is working it is best left alone I think:-)
Get BlueMail for Android
On 15 May 2024, at 12:37, Tracey Snelus < tsnelus@...> wrote:
Hello?
I believe that people are already successfully detecting meteors via radio backscatter using raspberry pi. I’ve attached some links to projects that I have followed.?
I’ve not tried a pi based solution yet as my pc does the trick just fine but it certainly looks achievable.?
If you were also considering using pi for meteor. Video detection then UKMON and the global meteor network are already very successfully running a pi based solution.?
Kind Regards
Miss Tracey Snelus?
Hi All,
I had a brief conversation with John Cook at the BAA Winchester Weekend about the feasibility of using a Raspberry Pi, SDR dongle and appropriate software to detect meteors, he suggested I post here.
?
The last time I did meteor detection I was using a custom script I’d created in SpectrumLab (see here ) with an X86 laptop and handheld scanner. At the time, I had investigated using a Raspberry Pi but they were pretty new, x86 software wasn’t compatible and the project didn’t go anywhere.
?
Since then, USB SDR Dongles have been invented, Raspberry Pis are now on version 5 and the Pi 5 is significantly more powerful than the Win 98 Laptop I was using, has more memory, faster disk and network access etc. Windows has also come to ARM, I believe there is a Just in Time (JIT) re-complier that recompiles x86 software on the fly (JIT compilers are very fast), but I have no experience of this, also Linux SW has developed a huge amount so there might even be a mature Linux software solution (my main Laptop is Linux).
?
Anyway - I’m now thinking of trying again, creating a meteor detector to compliment the visual meteor detector my Astro Society (Crayford) already runs. The concept is a Raspberry Pi, USB SDR, and appropriate software. I’d save the files to a NAS with remote cloud access so members can share any post processing/collation for reporting purposes.
?
Do you know if anyone is already doing radio meteor detection on a Raspberry Pi? If so can you point me to the details? I’m also interested in compatible USB SDR’s and Compatible Analysis Software (like Spectrum Lab) I’d like to know this is possible because I don’t want to reinvent the wheel and I don’t want to spend my societies cash finding out it can’t be done! :-)
?
Thanks,
Simon.
|
Re: Meteor Detection using a Raspberry Pi
Thanks for the info Tracey, I'll investigate, it sounds promising:-) our visual meteor station is PC based and an old video camera, at some point we will rebuild this, but whilst it is working it is best left alone I think:-)
Get BlueMail for Android
On 15 May 2024, at 12:37, Tracey Snelus < tsnelus@...> wrote:
Hello?
I believe that people are already successfully detecting meteors via radio backscatter using raspberry pi. I’ve attached some links to projects that I have followed.?
I’ve not tried a pi based solution yet as my pc does the trick just fine but it certainly looks achievable.?
If you were also considering using pi for meteor. Video detection then UKMON and the global meteor network are already very successfully running a pi based solution.?
Kind Regards
Miss Tracey Snelus?
Hi All,
I had a brief conversation with John Cook at the BAA Winchester Weekend about the feasibility of using a Raspberry Pi, SDR dongle and appropriate software to detect meteors, he suggested I post here.
?
The last time I did meteor detection I was using a custom script I’d created in SpectrumLab (see here ) with an X86 laptop and handheld scanner. At the time, I had investigated using a Raspberry Pi but they were pretty new, x86 software wasn’t compatible and the project didn’t go anywhere.
?
Since then, USB SDR Dongles have been invented, Raspberry Pis are now on version 5 and the Pi 5 is significantly more powerful than the Win 98 Laptop I was using, has more memory, faster disk and network access etc. Windows has also come to ARM, I believe there is a Just in Time (JIT) re-complier that recompiles x86 software on the fly (JIT compilers are very fast), but I have no experience of this, also Linux SW has developed a huge amount so there might even be a mature Linux software solution (my main Laptop is Linux).
?
Anyway - I’m now thinking of trying again, creating a meteor detector to compliment the visual meteor detector my Astro Society (Crayford) already runs. The concept is a Raspberry Pi, USB SDR, and appropriate software. I’d save the files to a NAS with remote cloud access so members can share any post processing/collation for reporting purposes.
?
Do you know if anyone is already doing radio meteor detection on a Raspberry Pi? If so can you point me to the details? I’m also interested in compatible USB SDR’s and Compatible Analysis Software (like Spectrum Lab) I’d like to know this is possible because I don’t want to reinvent the wheel and I don’t want to spend my societies cash finding out it can’t be done! :-)
?
Thanks,
Simon.
|
Re: Meteor Detection using a Raspberry Pi
Hello?
I believe that people are already successfully detecting meteors via radio backscatter using raspberry pi. I’ve attached some links to projects that I have followed.?
I’ve not tried a pi based solution yet as my pc does the trick just fine but it certainly looks achievable.?
If you were also considering using pi for meteor. Video detection then UKMON and the global meteor network are already very successfully running a pi based solution.?
Kind Regards
Miss Tracey Snelus?
Hi All, I had a brief conversation with John Cook at the BAA Winchester Weekend about the feasibility of using a Raspberry Pi, SDR dongle and appropriate software to detect meteors, he suggested I post here.
?
The last time I did meteor detection I was using a custom script I’d created in SpectrumLab (see here ) with an X86 laptop and handheld scanner. At the time, I had investigated using a Raspberry Pi but they were pretty new, x86 software wasn’t compatible and the project didn’t go anywhere.
?
Since then, USB SDR Dongles have been invented, Raspberry Pis are now on version 5 and the Pi 5 is significantly more powerful than the Win 98 Laptop I was using, has more memory, faster disk and network access etc. Windows has also come to ARM, I believe there is a Just in Time (JIT) re-complier that recompiles x86 software on the fly (JIT compilers are very fast), but I have no experience of this, also Linux SW has developed a huge amount so there might even be a mature Linux software solution (my main Laptop is Linux).
?
Anyway - I’m now thinking of trying again, creating a meteor detector to compliment the visual meteor detector my Astro Society (Crayford) already runs. The concept is a Raspberry Pi, USB SDR, and appropriate software. I’d save the files to a NAS with remote cloud access so members can share any post processing/collation for reporting purposes.
?
Do you know if anyone is already doing radio meteor detection on a Raspberry Pi? If so can you point me to the details? I’m also interested in compatible USB SDR’s and Compatible Analysis Software (like Spectrum Lab) I’d like to know this is possible because I don’t want to reinvent the wheel and I don’t want to spend my societies cash finding out it can’t be done! :-)
?
Thanks, Simon.
|
