Add other instruments about leanhrpt-decode

[Xerbo]

MHS is already supported so adding support for AMSU and/or HIRS shouldn't be too much work as their format is pretty similar. The reason why I haven't done this yet is because the data doesn't have much use without a lot of processing.

TIP/AIP frames are already decoded intermediately (but with no way of exporting, maybe have an export button for use in other software?). And as for timestamps/positions thats already done and is used for georeferencing.

[zeke800]

Yes, I think that it would be very useful to export complete HRPT data mainly because one may create some great composites with it. May I suggest looking into a style similar to satdump. It outputs (to the folder of your choice) folders containing the data, all labeled nicely. I think that this format will play very well with LeanHRPT-Decode.

Thanks :)

[zeke800]

Also on Meteor there are more instruments such as the galactic ray mapper. It would be very useful (scientifically) to be able to analyze this data.

[Xerbo]

Yes, I think that it would be very useful to export complete HRPT data mainly because one may create some great composites with it. May I suggest looking into a style similar to satdump. It outputs (to the folder of your choice) folders containing the data, all labeled nicely. I think that this format will play very well with LeanHRPT-Decode.

A very similar feature is implemented via the command line interface, which is only missing minor functionality like projection and map overlays.

[zeke800]

Thanks! I didn't know that the command line provided that functionality. Still, it would be very nice to have all the other instruments decoded :)

It would also help because NOAA-18's MHS is non-functional.

I have little experience writing decoders, though I wrote 2 of my own protocols. I can try to contribute, especially given that you said that it will be easy because MHS is already decoded. The only problem - I have absolutely no idea how HRPT is encoded :( Is there any document about different satellite's HRPT downlink and it's structure? How did you write this decoder so far? :)

Thanks!

[Xerbo]

Ive compiled a list of various sounders and some basic info on them:

• MWHS - has an odd quirk (broadcasts a, what looks like, ring buffer) but simple
• AMSU - seems simple at a first glance (although some weirdness on MetOp)
• MTVZA - not much info on this, though guessing by the packet size I'm guessing it transmits a single pixel per packet
• HIRS - dead on MetOp-B, not on MetOp-C, looks very painful on NOAA

AMSU on NOAA seems like a good starting point since all the AIP code is already in place and it's well documented.

The way to add a new sensor is to update satinfo.h with the info (swath/resolution/human readable name/etc) and then add the needed code to the decoder.

[zeke800]

Hi! Thank you so much for digging up that guide :) On what page does it mention the AMSU data format (there are over 2500 pages)? Also, I believe this repository has a decoder for MTVZA as well as a large portion of the other sounders.

Thanks!

[Xerbo]

The sections of interest are 4.1.4.1 (AMSU format) and 4.1.5.2 (AIP format)

[Xerbo]

I've added both (NOAA) HIRS and MTVZA support.

[zeke800]

Thanks! It might take a while for me to figure out AMSU :)

[Xerbo]

NOAA AMSU-A added in 85cc7c7