Meteor M2-4 on board time error

[SKnox-coder]

current time of pass should be used to generate the geo map as the onboard clock on Meteor M2-4 is corrupted

[Digitelektro]

This is not possible, you will not now the timestamp in a ms resolution. Also start of the recording of the pass is not equal to the timestamp of the first decoded packet.

[SKnox-coder]

Why couldn't you generate the geo map based on the pass time and orbital elements. The on-board time is unstable, and the geo map does not reflect the correct satellite position

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On Mon, Feb 10, 2025, 2:34 PM Digitelektro ***@***.***> wrote: This is not possible, you will not now the timestamp in a ms resolution. Also start of the recording of the pass is not equal to the timestamp of the first decoded packet. — Reply to this email directly, view it on GitHub <#106 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BPLR4D43LU26JLANPPY2BY32PD5LVAVCNFSM6AAAAABW3LON2KVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMNBZGA2DQNZUGQ> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[Digitelektro]

Because it is not possible to now the pass time. There is not reference without the timestamp from the packet

[SKnox-coder]

the recording name holds the pass date and time

[Digitelektro]

But as I said it is not punctual. Between the start of the recording and the actual first decoded valid packet, the elapsed time is not known.

[SKnox-coder]

can a capture be generated with no geo map overlay? is that an option?

[Digitelektro]

No, there is no such option. I am sure timestamp will be fixed soon on the satellite.

[SKnox-coder]

I'm not convinced the issue is even onboard the satellite

[Digitelektro]

Will have a look at it. I don't have LRPT receiving system right now, but I asked some forum members to provide some cadus

[Digitelektro]

So I have got a cadu file, with satdump the overlay is slightly off, but meteordemod draw it perfectly. Can you upload a file containing the decoded pictures, the cadu and tle file? You can use swisstransfer or something similar to transfer the files. Thanks

[SKnox-coder]

Ok I know I have the correct tle file Offline processing a pass recording with satdump causes it to crash when generating timestamps I will upload a cadu file as soon as I can Is the cadu you have recent? This seems to have started happening last week and others are having the same issue thanks

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On Tue, Feb 11, 2025, 1:41 PM Digitelektro ***@***.***> wrote: So I have got a cadu file, with satdump the overlay is slightly off, but meteordemod draw it perfectly. Can you upload a file containing the decoded pictures, the cadu and tle file? You can use swisstransfer or something similar to transfer the files. Thanks — Reply to this email directly, view it on GitHub <#106 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BPLR4D43ORDUFG7VFN55ZST2PI75XAVCNFSM6AAAAABW3LON2KVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMNJRGY4TENBSGQ> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[Digitelektro]

I got the cadu from 9th of February