[Esip-discovery] Orbit Metadata in OpenSearch Metadata

Lynnes, Christopher S. (GSFC-6102) christopher.s.lynnes at nasa.gov
Fri Mar 18 11:16:07 EDT 2011

We actually straddle this fence at GES DISC:  we send orbital metadata to ECHO, but we compute assemblages of rectangles (a single bounding box does not work) for Mirador.  Assuming that the spec were modified (or already accommodates?) multiple rectangles per item in the response, it raises the interesting tactic of delegating granule-level OpenSearch back to Mirador for those datasets.  That is, you could return an OSDD which leads to a search against Mirador instead of ECHO. 

On Mar 18, 2011, at 10:33 AM, Mattmann, Chris A (388J) wrote:

> Hi Matt,
> I think the reason we don't see this stuff in GeoRSS is that GeoRSS is assumed to describe data/documents that are downstream and where spatial information and geometry has already been computed. Maybe there should be a SatlelliteRSS (or whatever :) ) as a set of custom extensions to RSS similar to what GeoRSS does in its own right. 
> Really good topic to discuss in general though.
> My 2 cents,
> Chris
> On Mar 18, 2011, at 5:14 AM, Cechini, Matthew F. (GSFC-423.0)[RAYTHEON COMPANY] wrote:
>> All,  
>>   A number of our granules specify orbit metadata (crossing lat, crossing longitude, etc) and do not specify a spatial geometry (box, polygon).  When returning spatial information for these granules, according to the new spec we would need to calculate the MBR for the orbit track.  Difficulties of that aside, I don't see any handling of orbit information in either of the GeoRSS specifications.  Is this something you have discussed before?  Is there another specification that we may look to that handles orbit metadata, or are we on our own to specify custom tags if we want to return that information?
>> Thanks,
>> Matt
>> Matthew F Cechini
>> ECHO Operations Lead - Systems Engineer
>> Office: (301) 851-8049
>> Cell  : (202) 251-8013
>> Fax   : (301) 851-8283
>> E-Mail: Matthew.F.Cechini at nasa.gov
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> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> Chris Mattmann, Ph.D.
> Senior Computer Scientist
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> Email: chris.a.mattmann at nasa.gov
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> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> Adjunct Assistant Professor, Computer Science Department
> University of Southern California, Los Angeles, CA 90089 USA
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Dr. Christopher Lynnes     NASA/GSFC, Code 610.2    phone: 301-614-5185

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