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<p class="MsoNormal"><span style="font-family:"Georgia",serif;color:#1F497D">Colin,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Georgia",serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Georgia",serif;color:#1F497D">I think there might be a little more follow-up required. The sample that was sent indicates compliance with a red book (“…OPEN-LOOP Observation File - Format compliant with CCSDS 506.1-R-1…).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Georgia",serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Georgia",serif;color:#1F497D">There is a blue book for this (CCSDS 506.1-B-1). Section 4.2 defines the observation header details. I don't think it quite matches what was sent (for example, there is no “V” or
version line which the blue book calls out). Note that the observation header is quite short (which is also the case in the blue book). The majority of the file is then taken up with scan records, which I think is then the domain of DDOR proper. And not
necessarily something that would concern TGFT per se.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Georgia",serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Georgia",serif;color:#1F497D">In general though this brings up a question of how much of this metadata would be brought "outside" of the file to be transferred by TGFT. My initial thinking is that given that
<a name="_MailEndCompose">the DDOR WG has already defined a fair amount of metadata that is apparently used quite successfully that we really don't need much for TGFT. This is based on the assumption that the job for TGFT is simply to move the files from point
A to point B and provide some very basic metadata as to what the file is about that can then be used for subsequent decisions as to what to do with the file. Under that assumption, it seems to me that the basic metadata re TGFT would be:<o:p></o:p></a></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="font-family:"Georgia",serif;color:#1F497D"><o:p> </o:p></span></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span style="mso-bookmark:_MailEndCompose"><![if !supportLists]><span style="font-family:"Georgia",serif;color:#1F497D"><span style="mso-list:Ignore">1)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-family:"Georgia",serif;color:#1F497D">DOR file type -- either a raw observation file for correlation or the correlated product/result (which is a very small file)<o:p></o:p></span></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span style="mso-bookmark:_MailEndCompose"><![if !supportLists]><span style="font-family:"Georgia",serif;color:#1F497D"><span style="mso-list:Ignore">2)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-family:"Georgia",serif;color:#1F497D">The source of the file (Correlator Id or Observer Id in the case of the DDOR “raw” file)<o:p></o:p></span></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span style="mso-bookmark:_MailEndCompose"><![if !supportLists]><span style="font-family:"Georgia",serif;color:#1F497D"><span style="mso-list:Ignore">3)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-family:"Georgia",serif;color:#1F497D">The spacecraft identifier for which the file is applicable<o:p></o:p></span></span></p>
<p class="MsoListParagraph"><span style="mso-bookmark:_MailEndCompose"><span style="font-family:"Georgia",serif;color:#1F497D"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="font-family:"Georgia",serif;color:#1F497D">I think that would do it but of course we should check with the DDOR WG further. I also think that this does a good job of steering clear
of work that has already been done.<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="font-family:"Georgia",serif;color:#1F497D"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="font-family:"Georgia",serif;color:#1F497D">Best regards,<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="font-family:"Georgia",serif;color:#1F497D">-Erik<o:p></o:p></span></span></p>
<p class="MsoListParagraph"><span style="mso-bookmark:_MailEndCompose"><span style="font-family:"Georgia",serif;color:#1F497D"><o:p> </o:p></span></span></p>
<span style="mso-bookmark:_MailEndCompose"></span>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> SMWG [mailto:smwg-bounces@mailman.ccsds.org]
<b>On Behalf Of </b>Colin.Haddow@esa.int<br>
<b>Sent:</b> Monday, January 22, 2018 7:35 AM<br>
<b>To:</b> CCSDS SMWG ML (smwg@mailman.ccsds.org) <smwg@mailman.ccsds.org><br>
<b>Subject:</b> [Smwg] Action 2017-1106-01 - Delta-DOR Metadata.<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Dear all,</span>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif"> please find attached an example of delta-dor metedata that Mattia supplied to me. With respect to the size of delta-dor files I understand from Mattia that "It depends on the length
of the recording, the sampling rate and the quantisation. For Delta-DOR they can go from a minimum of about 25MB to a maximum of about 2GB, depending on the configuration"</span>
<br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Cheers for now,</span>
<br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Colin</span> <br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif"><br>
<br>
---------------------------------------------------------------------------------------------------------<br>
Dr. Colin R. Haddow,<br>
HSO-GI, European Space Agency,<br>
European Space Operations Centre,<br>
Robert-Bosch-Str 5,<br>
64293 Darmstadt,<br>
Germany.<br>
<br>
Phone; +49 6151 90 2896<br>
Fax; +49 6151 90 3010<br>
E-Mail; <a href="mailto:colin.haddow@esa.int">colin.haddow@esa.int</a><br>
---------------------------------------------------------------------------------------------------------<br>
</span><br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:purple">----- Forwarded by Colin Haddow/esoc/ESA on 22/01/2018 16:30 -----</span>
<br>
<br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">From: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">Mattia Mercolino/esoc/ESA</span>
<br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">To: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">Colin Haddow/esoc/ESA@ESA</span>
<br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">Date: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">22/01/2018 15:39</span>
<br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">Subject: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">Re: Delta-DOR Metadata.</span>
<o:p></o:p></p>
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<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Hi Colin,</span> <br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Please find attached a metadata file associated to the DDOR session</span>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">(it is a ASCII file)</span>
<br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Regards,</span> <br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Mattia</span> <br>
<br>
<br>
<br>
<br>
<br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">From: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">Colin Haddow/esoc/ESA</span>
<br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">To: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">Mattia Mercolino/esoc/ESA@ESA</span>
<br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">Date: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">19/01/2018 14:06</span>
<br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">Subject: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">Delta-DOR Metadata.</span>
<o:p></o:p></p>
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<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Hi Mattia,</span> <br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif"> would it be possible for you to send me an example of the metadata that is associated with a delta-dor file ?. Could you also let me know what sort of size a typical delta-dor
data file is ?</span> <br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Thanks.</span> <br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Cheers for now,</span>
<br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Colin</span> <br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif"><br>
<br>
---------------------------------------------------------------------------------------------------------<br>
Dr. Colin R. Haddow,<br>
HSO-GI, European Space Agency,<br>
European Space Operations Centre,<br>
Robert-Bosch-Str 5,<br>
64293 Darmstadt,<br>
Germany.<br>
<br>
Phone; +49 6151 90 2896<br>
Fax; +49 6151 90 3010<br>
E-Mail; <a href="mailto:colin.haddow@esa.int">colin.haddow@esa.int</a><br>
---------------------------------------------------------------------------------------------------------<br>
</span><br>
<br>
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