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All,<br><br>
The Global Precipitation Measurement Mission (GPM) was originally a
Goddard Space Flight Center in-house spacecraft development. The
plans were to use CCSDS packets over IP and CFDP for the communications
links. The project has since been changed to no longer be in-house
and will now no longer be an IP spacecraft. The attached documents
can still be used as a starting point to discuss how a LEO Earth Science
mission could/should use IP.<br><br>
A description of the two attached files in the zip attachment (rename
.wasazip back to .zip):<br><br>
<blockquote type=cite class=cite cite=""><b>GPMCore_RSDO_OCD_072604
</b>(MS Word): This is the Ops concept document for the Core
spacecraft, section 3.1 provides an overview of how we were planning to
implement IP-in-space for GPM (and reflects the latest concept we had
before we pulled the plug on IP).<br><br>
<b>GPM Core SC S-to-G ICD Draft two </b>(MS word): This is the
draft of an ICD we developed between the Ground segment/MOC and the Core
spacecraft defining the formats/protocols to be used for return and
forward link communications. ICD was specific to
"in-house" Core spacecraft development, and reflects most
recent GPM IP-in-space concept before switchover to
CCSDS.</blockquote><br>
The LPT CANDOS experiment flew on the Shuttle on STS-107. One of
the main experiments was the use of IP. A couple of papers are also
attached on this subject. More information can also be found
towards the bottom of this link:
<a href="http://ipinspace.gsfc.nasa.gov/documents/.%A0" eudora="autourl">
http://ipinspace.gsfc.nasa.gov/documents/. </a> This page also has
various other documents and presentations summarizing past work at
GSFC.<br><br>
I'm sorry about filling up people's e-mailboxes with various
documents. Don't worry, these are the last I currently plan to
forward.<br><br>
Regards,<br>
Dave<br><br>
<br>
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______________________________________________________________<br>
Dave Israel<br>
Leader, Advanced Technology Development Group<br>
Microwave & Communication Systems Branch<br>
NASA Goddard Space Flight Center Code 567.3<br>
Greenbelt, MD 20771<br>
Phone: (301) 286-5294 Fax:
(301) 286-1769<br>
E-mail: dave.israel@nasa.gov<br><br>
"Without deviation from the norm, progress is not
possible." -Frank Zappa</body>
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