[HN Gopher] Receiving weather satellite images using SatDump
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Receiving weather satellite images using SatDump
Author : belter
Score : 173 points
Date : 2024-02-08 07:50 UTC (1 days ago)
(HTM) web link (support.nooelec.com)
(TXT) w3m dump (support.nooelec.com)
| matteason wrote:
| Messing around with SDR is a really fun little hobby. There's
| something very satisfying about picking up signals that are just
| floating around waiting to be seen.
|
| I briefly tried writing an SDR tuner in JavaScript a while back
| but there was a bug somewhere between Chrome and my SDR dongle
| that meant it failed whenever you tried to tune to a different
| frequency. I might pick it back up and see if it's possible now.
|
| If you're interested in near-realtime weather images without
| having to fiddle with SDR, NASA collate images from loads of
| different satellites at https://worldview.earthdata.nasa.gov/ and
| so do EUMETSAT at
| https://view.eumetsat.int/productviewer?v=default#
|
| I used the EUMETSAT data to build this service which provides
| 3-hourly cloud maps for the whole Earth, which are surprisingly
| difficult to find: https://github.com/matteason/live-cloud-maps
| raffraffraff wrote:
| I was expecting the NASA link to be a somewhat usable
| experience but it's... perhaps not for someone who just wants a
| weather prediction. The map is blank unless you add some
| layers, and I just spent "too long" failing to find anything
| useful. There are layers with data from 1987. maybe I need to
| use this on a desktop browser.
| matteason wrote:
| This link should show a full true-colour image from
| yesterday: https://go.nasa.gov/48cQIXE
|
| And this one precipitation estimates:
| https://go.nasa.gov/49a68Nq
| somishere wrote:
| This is an amazing resource. Thank you.
| NKosmatos wrote:
| I remember seeing your page somewhere, but it got lost between
| all the opened tabs and I didn't bookmark it. Now that I've
| rediscovered it, and found the creator, I can say thanks mate
| :-)
| matteason wrote:
| Ha, thanks! You probably saw it when I submitted to Show HN.
| Hope it's useful!
| ByQuyzzy wrote:
| WEfax is still useful and it's fun to experiment with different
| data modes. You don't need an expensive radio or even an SDR to
| receive it, any cheap used SW receiver will do.
| h4ch1 wrote:
| https://www.youtube.com/watch?v=w_QpKGK0tuE
|
| SaveItForParts is a great channel and does interesting
| explorations and detailed explanations about interacting with
| satellites :)
| vik0 wrote:
| I'm glad someone mentioned him. I found his channel a while ago
| and I really enjoy his stuff!
| dabluecaboose wrote:
| For anyone who is interested in just getting satellite imagery
| (though I understand the fun of pulling it out of the air), NOAA
| makes the GOES imagery available online from static web
| addresses.
|
| https://cdn.star.nesdis.noaa.gov/GOES16/ABI/CONUS/GEOCOLOR/2...
| This link will always be the most recent shot of the continental
| US from GOES-16 (which is currently GOES-EAST)
|
| https://cdn.star.nesdis.noaa.gov/GOES18/ABI/CONUS/GEOCOLOR/2...
| This link will always be the most recent shot of the Pacific and
| West Coast US from GOES-17 (which is currently GOES-WEST)
|
| If you go to the base directories you can hunt around for
| different resolutions or for all kinds of other products, like
| full-disk images or even the lightning mapper.
|
| I used to have a script that pulled the CONUS and FD (Full Disk)
| shots every 10 minutes. The goal was to auto-update my desktop
| wallpaper to the most recent imagery, but that proved to be
| frustratingly annoying to implement. Still, it was very cool to
| have an entire years worth of imagery at 10 minute intervals when
| I left it abandoned and it just kept running.
| enriquto wrote:
| > For anyone who is interested in just getting satellite
| imagery (though I understand the fun of pulling it out of the
| air)
|
| If you download satellite images from the internet, but you are
| connected via wifi, you are still pulling them out of the air,
| aren't you?
|
| Behold the amazing Copernicus program, paid for by all European
| citizens:
|
| https://dataspace.copernicus.eu/
|
| It provides a nice API to download many satellite images in
| bulk: optical, radar, multispectral and hyperspectral images of
| various types are available for free. That's about one TB of
| Earth images acquired per hour, and all of them are archived
| for ever and for all to see.
| dylan604 wrote:
| with a fun little shell script, you can curl/wget your way into
| doing this automagically for you.* i did this with imagery for
| NASA images to create custom timelapse sequences of the sun
| from SOHO. they have a similar fixed folder structure for the
| frequency filters and image dimensions. it created an art
| exhibit that would keep the previous 24 hours of data current.
|
| *beware, using wget will prove you are evilHacker in certain
| jurisdictions. /s
| Solvency wrote:
| Is it possible to build a smooth hires animation of these? How
| often are the images updated?
| dabluecaboose wrote:
| Every ~10 minutes. It looks pretty smooth.
|
| NOAA/NESDIS actually has animations posted on their website:
| https://www.star.nesdis.noaa.gov/goes/conus_band.php?sat=G16.
| ..
| Solvency wrote:
| Too bad there's no way to hide the ugly pixelated
| state/country borders to just see the beautiful raw
| photography.
| dabluecaboose wrote:
| The Full-Disk images don't have the baked-in borders:
|
| https://www.star.nesdis.noaa.gov/goes/fulldisk_band.php?s
| at=...
| lxe wrote:
| https://rammb-slider.cira.colostate.edu/ has a UI for this
| mthoms wrote:
| Do you still have the image archive? I started collecting them
| at New Years with a script (Goes x 2, Himiwari-8, EU Metsat)
| and would love to be able to get older imagery. I'm more than
| happy to pay for any bandwidth costs, etc if you can share the
| archive.
| dabluecaboose wrote:
| I don't, unfortunately. It occurred to me that I wasn't doing
| anything with the almost terabyte of images and didn't even
| have any ideas of _what_ I would do, so I deleted it.
| mthoms wrote:
| No worries. It is indeed tons of data. I've already stored
| 200GB+ and I just started on Jan 1st.
| redavni wrote:
| Google Cloud and AWS host the netcdf GOES archives among
| others. They are all there.
|
| https://console.cloud.google.com/marketplace/product/noaa-
| pu...
| mthoms wrote:
| I appreciate the response, this is good to know. I
| apologize for not being clearer but what I'm specifically
| looking for is the "GeoColor" full-disk imagery [0], which
| I don't think is archived anywhere (beyond a couple weeks
| worth). That imagery is generated from the raw data you
| linked, but sadly the code isn't publicly available.
|
| There is a good amount of material around the techniques
| used to generate the GeoColor images [1][2] but
| understanding it well enough to implement it is a little
| above me.
|
| If any HN'er can code up something like this, I'd
| definitely be interested in talking with them.
|
| [0] https://www.star.nesdis.noaa.gov/GOES/fulldisk_band.php
| ?sat=... [1] https://www.star.nesdis.noaa.gov/goes/document
| s/QuickGuide_C... [2] https://journals.ametsoc.org/view/jou
| rnals/atot/37/3/JTECH-D...
| cocostation wrote:
| Most commercial EO vendors have imagery sets freely available.
|
| https://www.maxar.com/open-data
|
| https://www.capellaspace.com/gallery/
|
| You need to apply for a key here:
| https://developers.planet.com/open/
|
| AWS Hosts Earth Observation data here:
|
| https://registry.opendata.aws/?search=tags:gis,earth%20obser...
|
| Also, Microsofts Plantary Computer has a bunch of open data as
| well.
| lxe wrote:
| I use the CSU's RAMMB SLIDER UI at https://rammb-
| slider.cira.colostate.edu/
| matthewaveryusa wrote:
| Has anyone had any luck with a pvc qfh helix antenna like this
| one?
|
| https://www.instructables.com/NOAA-Satellite-Signals-with-a-...
|
| I already have an rtl-sdr picking up aircraft beacons and have
| this antenna on my todo list. Are there any benefits to buying a
| grid antenna vs DIYing my own helix?
| cocostation wrote:
| I tried that project and couldn't pick anything up. When the
| satellite was passing overhead, the antenna just couldn't pick
| up the signal. I have coworkers that got it to work, so I think
| either I configured the wiring on the antenna incorrectly (the
| directions weren't very clear to me), used the wrong type of
| coax, or my soldering was too sloppy (or a combination of A, B
| and C).
|
| I'd love to see more demos on how to make the QFH antenna.
| Rallen89 wrote:
| For EU people, this is a US geostationary satellite so no luck
| there, We have meteosat but its encrypted and have to pay a fee
| to use :( , even the russian (non geostationary meteor series)
| can be accessed freely.
| matteason wrote:
| It is possible to receive images from the NOAA satellites
| outside the US though, since they're polar-orbiting:
| https://www.rtl-sdr.com/rtl-sdr-tutorial-receiving-noaa-weat...
| amatecha wrote:
| GOES sats are geostationary but the NOAA APT satellites are
| encircling the planet and you can pick them up. Old tutorial
| but still relevant, just use "noaa-apt" tool[0] instead of
| WXtoImg. https://www.rtl-sdr.com/rtl-sdr-tutorial-receiving-
| noaa-weat...
|
| [0] https://github.com/martinber/noaa-apt
| jp42 wrote:
| any recommendation for tutorial to build receiver for to get live
| satellite data?
| redavni wrote:
| The Thought Emporium made a great series on this. There are
| more these days though.
|
| https://www.youtube.com/watch?v=jGWFg7EDnyY
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