https://wiki.satnogs.org/index.php?action=history&feed=atom&title=Artifacts 2026-04-06T07:21:25Z Revision history for this page on the wiki MediaWiki 1.32.0 https://wiki.satnogs.org/index.php?title=Artifacts&diff=3661&oldid=prev 2020-08-21T09:22:25Z

<p>Created page with &quot;== Introduction == In SatNOGS project, &#039;&#039;&#039;Artifacts&#039;&#039;&#039; are the results of an observation. Artifacts are generated by [https://gitlab.com/librespacefoundation/satnogs/satnogs-f...&quot;</p> <p><b>New page</b></p><div>== Introduction ==<br /> In SatNOGS project, '''Artifacts''' are the results of an observation. Artifacts are generated by [https://gitlab.com/librespacefoundation/satnogs/satnogs-flowgraphs SatNOGS GNU Radio Flowgraphs]. A quick introduction on SatNOGS Flowgraphs can be found in [[Understanding_satnogs-flowgraphs]] guide.<br /> <br /> <br /> == Current Artifacts ==<br /> <br /> === I/Q Data ===<br /> I/Q Data is a raw representation of the received signal. In SatNOGS project, it can be generated by SatNOGS client when the related flag is set (it is disabled by default). I/Q data, currently, are not uploaded in SatNOGS Network, however individual station owners keep and/or uploading I/Q data in other platforms.<br /> <br /> === Waterfall ===<br /> Waterfall is a representation of frequency spectrum over the time of the observation. Waterfall covers a range of frequencies around the central frequency of the observation. In SatNOGS Network, Waterfall can be found in waterfall tab of an observation in an image file format.<br /> <br /> === Audio ===<br /> Audio is a lossy compression of the I/Q Data artifact in a format that is audible. In some cases audio can be used for demodulating/decoding signal with external software. In SatNOGS Network, Audio can be found in audio tab of an observation in a .ogg file format presented by waveform and spectrogram.<br /> <br /> === Demodulated/Decoded Frame ===<br /> Demodulated/Decoded Frame is the result of demodulation/decoding of a transmitted signal of a satellite. In SatNOGS Network, Demodulated/Decoded Frame can be found in data tab of an observation in a text of hex values format.<br /> <br /> === Decoded Image ===<br /> Decoded Image is the result of decoding of an image transmitted by a satellite. In SatNOGS Network, Decoded Image can be found in data tab in an image file format.</div>

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