[CESG] CESG / SEA Analysis of issues with IOAG RF Asset in the SANA registry (AI 19b-03)

[Nestor.Peccia at esa.int]

Michael,

Please find below an analysis done by Peter Shames (SEA AD) , who leads 
all CCSDS activities related to SANA

I would appreciate if you can distribute the mail within the IOAG.

I have an additional comment: "the bests in class" for the population of 
the SANA registry are those not belonging to IOAG.

ciao
nestor
============================================


As requested during the CESG telecon, here is my analysis of the issues 
present in the current IOAG RF Assets registry.  The first, of course, is 
that access is limited.  Presumably we can fix that by creating a list of 
allowed access that includes the necessary people.

The primary use for this in CCSDS is intended to be to provide a list of 
RF assets that can be used in the future as part of planning and 
scheduling space communications.  As such this is of primary interest to 
the Cross Support Services (CSS) area and to users of the Service 
Management (SM) standards.  It is these standads that are intended to be 
used for the planning and scheduling of space comm services.

For reference I have attached an information model of what it presently in 
the IOAG RF assets registry, with items in red showing the proposed 
extensions to allow this to connect to the CSS required Sites and 
Apertures registries to be used for scheduling.  The IOAG RF asset 
registry is located in the SANA set of Candidate registries.  This is 
located at: http://sanaregistry.org/cgi/registry-auth?id=rf_assets.  You 
will need to request an access token (and be on the list of acceptable 
viewers) before you can see the registry.

Issues with registry consistency and contents:
1.      About 1/2 of the assets do not have any name present
2.      Some names are not unique (they are repeated) 
3.      There is no distinction in the names that reflects that the 
antennas are at different sites
4.      In some cases the name of the site (location) is missing
5.      In most cases the location information (longitude / latitude) is 
missing
6.      When it is provided the lat / lon is sometimes in ddmmss and 
sometimes in dd.dddddd format
7.      In almost all cases the elevation info is missing
8.      In many cases the asset type (DS, EO, NE) is missing
Note that the most complete data sets come from the following: SSAT, KSAT, 
SSC Group, INPE, INTA, JHU, and SANSA.  All of the rest are incomplete in 
one or more ways.  See screen shots of one densely populated area and one 
more sparse one, for comparison.  The last attachment shows the top level 
of the registry and the column headers.

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