Differences

This shows you the differences between two versions of the page.

--- vhfsatellite-sw [2021/08/14 18:24] – [SatDump] mm3iig
+++ vhfsatellite-sw [2022/05/08 01:40] (current) – [Reprocessing Meteor M2 Images] mm3iig
@@ Line 5: / Line 5: @@
 ===== 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, but it can be difficult to get set up right. Alternatives are available, such as the excellent SatDump suite (which does a lot more besides VHF and can also decode the NOAA VHF telemetry streams). It does not, sadly, do APT yet - but it is being added at some point soon. It can also work with RTL-SDR dongles for live decoding, which makes for an all-in-one solution when it’s all complete.
+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, but it can be difficult to get set up right. Alternatives are available, such as the excellent SatDump suite (which does a lot more besides VHF and can also decode the NOAA VHF telemetry streams). It does not, sadly, do APT yet, nor can it do LRPT map overlays, but these features are being added at some point soon. It can also work with RTL-SDR dongles for live decoding, which makes for an all-in-one solution when it’s all complete.
 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.
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 ==== SatDump ====
-**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.
+**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.
 ==== LRPT Decoder ====
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 ==== MeteorGIS ====
+I am using a "measuring tape" turnstyle antenna mounted at 5 m high. 30 m of coaxx,a nooelectric twin LNA's with saw filter for 137 mhz. The LNA is Bias T powered by the RTL SDR dongle. All the passes are processed by a suite of software which includes orbitron,sdr sharp,lrpt decoder.dde control and meteorgis. The only setup for meteor m2 processing is to set location and time offset in orbitron and location in meteor gis. The system waits for a meteor pass and switches SDR# on with lrpt active. After a pass MeteorGIS processes the image to create country overlays and composites The system can also be used for NOAA passes by selecting the sats in orbitron, configuring audio output in SDR# and starting Wxtoimg
+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://leshamilton.co.uk/MeteorGIS.htm
+A good source on using MeteorGIS can be found at : https://mikkovuorela.com/meteorgis/meteorgis.html
+==== Reprocessing Meteor M2 Images====
+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.
+https://muglihs.sharing.bublup.com/ui/landing_page?item_id=001-i-6edbd5aa-4ef7-4ab2-870c-d85125b3309e
-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/composites/map overlays then it’s your only option, sadly.
-If you still want to have a go then here's an excellent guide on the process: https://mikkovuorela.com/meteorgis/meteorgis.html