vhfsatellite-sw
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vhfsatellite-sw [2021/08/01 23:38] – created - mm3iig | vhfsatellite-sw [2022/05/08 01:40] (current) – [Reprocessing Meteor M2 Images] mm3iig | ||
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+ | [[vhfwxsatellitetips|Front Page]] | [[vhfwxsatellitetips-antenna|Antennas]] | [[vhfwxsatellitetips-hw|Hardware]] | [[vhfsatellite-sw|Software]] | [[vhfsatellite-general|General Tips]] | [[vhfsatellite-gallery|Gallery]] | ||
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====== Software overview + tips ====== | ====== Software overview + tips ====== | ||
===== SDR Receiver software ===== | ===== SDR Receiver software ===== | ||
- | Honestly, it doesn’t really matter what software you use as long as it can pipe out audio to a virtual cable or record the audio or baseband for use later (for APT be sure to resample recordings to 11,025 kHz with your software of choice - see below). For LRPT you may wish to use SDR# as the plugin and setup is well-supported, | + | Honestly, it doesn’t really matter what software you use as long as it can pipe out audio to a virtual cable or record the audio or baseband for use later (for APT be sure to resample recordings to 11,025 kHz with your software of choice - see below). For LRPT you may wish to use SDR# as the plugin and setup is well-supported, |
If you’re struggling for CPU clock cycles you can run with a low sample rate for this work. This is useful for RTL-SDR dongles. Both signals easily fit into a 250kbps sample rate. This also makes it doable on RPIs, but processing the data afterwards can take longer than other devices. | If you’re struggling for CPU clock cycles you can run with a low sample rate for this work. This is useful for RTL-SDR dongles. Both signals easily fit into a 250kbps sample rate. This also makes it doable on RPIs, but processing the data afterwards can take longer than other devices. | ||
- | Here's the most cited/ | + | Here's the most cited/ |
For APT there' | For APT there' | ||
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==== WxtoImg ==== | ==== WxtoImg ==== | ||
- | **Overriding pass auto-recording** - you may need to tell WxtoImg to stop enabling recording when you’re trying to do other work in it. The best way to do this seems to be to deactivate the specific satellite the software is trying to record next from the list of satellites in the options - or untick them all. You may also need to do this to record one particular satellite if two passes are happening at the same time. | + | **Overriding pass auto-recording** - you may need to tell WxtoImg to stop enabling recording when you’re trying to do other work in it. The best way to do this seems to be to deactivate the specific satellite the software is trying to record next from the list of satellites in the options - or untick them all. You may also need to do this to record one particular satellite if two passes are happening at the same time. Sadly, you may not be able to get into the menus in time after you load to cancel a record, so sometimes you may just have to wait 10 minutes or so for the pass to complete before reopening the application. |
- | **Composite tips** - make sure that you make any changes to an image individually before saving | + | **Composite tips** - make sure that you make any changes to an image individually before saving the composite (that is, any of the options under the Image menu, such as equalising the image). Also images are saved in the order you add them to the composite - remember this when you’re after a certain image in a certain place. For example, two passes may cover the same area, but you want one shot over the other because it has better clouds |
- | **Animations** - it works, but it’s ropey, depending on the AVI format you choose. It may be better to transcode to MP4 afterwards if you want to do anything with it. Same tips here as for composites: make changes to each image individually! Another tip is to scale the timing/ | + | **Animations** - it works, but it’s ropey, depending on the AVI format you choose. It may be better to transcode to MP4 afterwards if you want to do anything with it. Or you could save images out individually and use an app that doesn' |
**Desyncs/ | **Desyncs/ | ||
- | **Importing audio files tip** - If you are bringing any audio file back into WxtoImg you will need to clone the timestamp from the original recording! If you don’t you may find your map overlays don’t work right. Again, NOAA-APT has a function for this in the Tools menu. | + | **Importing audio files tip** - If you are bringing any audio file back into WxtoImg you will need to clone the timestamp from the original recording! If you don’t you may find your map overlays don’t work right. Again, NOAA-APT has a function for this in the Tools menu. Sometimes you may find a pass you copy into the audio folder isn't matched up with a pass in the Audio Files tab, so you'll have to load those WAVs manually. |
**Recording passes for longer** - If you improve your antenna’s low-angle gain make sure to adjust how early/late in a pass the recording runs. This can be found under Recording Options and is set by elevation angle on each side (useful if you’re blocked on one side - you can ignore it). Set a starting angle (bottom box) and a max elevation above which you want a recording to happen at all (top box). | **Recording passes for longer** - If you improve your antenna’s low-angle gain make sure to adjust how early/late in a pass the recording runs. This can be found under Recording Options and is set by elevation angle on each side (useful if you’re blocked on one side - you can ignore it). Set a starting angle (bottom box) and a max elevation above which you want a recording to happen at all (top box). | ||
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==== SatDump ==== | ==== SatDump ==== | ||
- | If you don’t need map overlays for your LRPT captures then SatDump is a great solution that does everything you need and chucks out good images of a few different types. It’s certainly easier than setting up SDR# and multiple plugins and decoders and also opens up the world to further decoding of other satellites in other bands. | + | **Loading baseband recordings** - Do make sure you select the right sample rate (bandwidth selected in SDR application) and type when loading in your baseband. The box expects bits per second, rather than kilobits per second. Tick DC Block too if you know you have a spike in your recording. |
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- | Do make sure you select the right sample rate (bandwidth selected in SDR application) and type when loading in your baseband. The box expects bits per second, rather than kilobits per second. | + | |
==== LRPT Decoder ==== | ==== LRPT Decoder ==== | ||
- | Symbol | + | **Loading |
- | Additionally, | + | **Configuration .INI files** - The ini files are what tell the software |
==== MeteorGIS ==== | ==== MeteorGIS ==== | ||
+ | I am using a " | ||
+ | The suite of software for win 10 is preconfigured in a single zip file for extraction to the root of any drive. | ||
+ | For more information and downloads see: http:// | ||
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+ | A good source on using MeteorGIS can be found at : https:// | ||
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+ | ==== Reprocessing Meteor M2 Images==== | ||
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+ | The attached zip file is a package put together by Les Hamilton. It allows you to reprocess any .s files you may have. These could have been created by any combination of software that suits you. The package will reprocess a .s file to remove black lines, assign a projection such as UTM, sharpen the image and overlay country borders etc. The readme.pdf included has the step by step procedure. Simply unzip the .zip file into the root of your drive. | ||
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+ | https:// | ||
- | Honestly, don’t worry if you can’t figure this out. The software is absolutely horrible and very much part of the “someone made it work for them and then stopped caring” school of software development. As you’ll see from the pages online it has a specific list of requirements for things like folder and file names and the command line is unforgiving if you’re doing post-pass decoding. If you’re set on projections/ | ||
- | (Put some useful commands here) |
vhfsatellite-sw.txt · Last modified: 2022/05/08 01:40 by mm3iig