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BEST : final presentation

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BEST Final Presentation - Frascati April 2005 ... BEST Final Presentation - Frascati April 2005. Applied standards (3) Tools ... BEST framework offers a direct ... – PowerPoint PPT presentation

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Title: BEST : final presentation


1
BEST final presentation
  • Frascati, 21st April 2005

2
BEST FINAL PRESENTATION CONTENTS
  • Welcome (A. Ciarlo)
  • DEBAT project short history (A. Ciarlo)
  • Applied standards (CCSDS / ISO) (D. Minguillon)
  • Tools vs. Data life cycle (F. Berriri, J.
    Ferreira) - Demonstration
  • XML improvements (D. Minguillon) Demonstration
  • Success story (D.Minguillon)
  • Near future (A. Ciarlo, D.Minguillon)
  • Contacts
  • Conclusion (A. Ciarlo)

3
Welcome
4
Applied standards
5
Applied standards
  • EAST (Enhanced Ada subset)
  • The data description language EAST specification
  • CCSDS recommendation CCSDS 644.0-B-2 (nov 2002)
  • ISO standard ISO 158892003
  • Used to describe data structure on its medium
  • Not to be mastered thanks to the description tool
  • Makes I/O software easy to maintain thanks to the
    EAST I/O library
  • EAST V3 Standard will include DEBAT evolutions

6
Applied standards (2)
  • DEDSL
  • Data Entity Dictionary Specification Language
  • XML/DTD Syntax
  • CCSDS recommendation CCSDS 647.3-B-1(jan 2002)
  • Used to describe data semantics
  • Each data field or type is described through
    attributes (standard ones or user purpose ones)
  • Based on XML syntax
  • Produced by the same description tool than EAST

7
Applied standards (3)
  • Tools before DEBAT project

User application
Write
Read
EAST description
EAST I/O library
OASIS V4 or previous
Read/Write
DEDSL description
DATA
ICD
Document Editor
8
Tools presentation
9
Data life cycle
  • The data life cycle can be summarised as
  • Modelling syntactic and semantic data
    description
  • Generating / Simulating data generation for
    test or validation
  • Processing editing, checking, extracting
  • Post processing data transformation
  • Distribution CDROM, Internet

10
Data life cycle
11
BEST
  • BEST framework offers a direct access to the
    tools.
  • Easy way to add plug-ins sharing models and data.
  • Project managing facilities.

12
Modelling
Modelling
Model
13
OASIS Modeller
  • Modelling of data through a performing graphical
    user interface.
  • A XML internal format.
  • Several output formats
  • EAST,
  • DEDSL (PVL and XML),
  • XML schemas,
  • RTF, PDF and HTML documentation.
  • Library concept available

14
OASIS Modeller
15
OASIS Modeller
  • Demonstration
  • Modelling from scratch, using a documentation of
    CRYOSAT.
  • Finishing a model making some fields optional.
  • File generation EAST and DEDSL-XML.

16
Generating Simulating
Data
17
DPE (Data Producer Editor)
  • Displaying the tree-view of the Model
  • Generation of Data according to a Model
  • Custom generation default value, degraded
    value, computed value and random value.
  • Modification of an existing Data
  • Displaying the Data
  • Navigation through the Data
  • Search for particular elements

18
DPE (Data Producer Editor)
19
DPE (Data Producer Editor)
  • Demonstration
  • Opening existing data product
  • Generating from scratch a new data product

20
Processing
21
DEQ (Data Extractor Querying)
  • Displaying the tree-view of the Model
  • Displaying the Data
  • Navigation through the Data
  • Search for particular elements
  • Extraction
  • Definition of the extraction made thanks to a
    wizard
  • Storage of the extracted Data
  • Batch processing

22
DEQ (Data Extractor Querying)
23
DEQ (Data Extractor Querying)
  • Demonstration
  • Opening existing data product
  • Extracting subset from the edited data product

24
Utilities
  • Data Checker
  • Checks a Data against a Model.
  • ASCII Dump
  • Generates an ASCII representation of Data with
    possibility of XML structure.
  • Comparison Tool
  • Compares two versions of a Model and displays the
    difference in a tree-view.

25
ASCII Dump
  • Demonstration
  • Generating a simple text file
  • Generating a flat XML file
  • Generating a hierarchical XML file

26
Post Processing
Processed Data
27
PPT (Post Processing Tools)
  • XML Tagging
  • Generates a XML file from any Data
  • Quick Look
  • Smart presentation of extracted Data
  • Visu2d
  • Draws some graphs from Data

28
Quick Look
  • Demonstration
  • Quick visualisation of an image included in the
    data

29
Distribution
30
Distribution
  • Packaging
  • Creates an archive for diffusion
  • WEB services
  • Model Reading
  • Data Reading
  • Data Checking
  • Data Extraction
  • XML Tagging

31
XML improvements
32
XML improvements
  • Just before the start of DEBAT project XML became
    very used
  • As a data format
  • As a data description format (DTD or schemas)
  • The modeller was very suitable to design data
    (why not XML ones?)
  • The output were easy to enhance with schema
    production

33
XML improvements (2)
  • CNES had just issued an internal recommendation
    for XML data ICDs
  • The PLEIADES project (Earth observation) had just
    decided to have all its interfaces in XML
  • So, we decided to enhance the modeller with XML
    schema production facilities and to take some
    PLEIADES interfaces as use-cases applying the
    recommendation

34
XML improvements (3)
  • 2 additional plug-ins based on XML
  • ALADIN XML description comparisons
  • SCRIBE XML post processor transforming XML data
    descriptions into ICDs (Word or HTML)
  • Both are in test in PLEIADES context to produce
    and compare ICD versions
  • SCRIBE is already operational on Helios project

35
Success story
36
Success story
  • The list of project using EAST and DEDSL is now
    quite long...
  • SPOT (Earth observation) was the historical first
    one, describing and checking its metadata with
    OASIS and EAST Ascii dump tool.
  • then SSALTO (altimetry) was the first one to use
    the EAST I/O library in its operational software.

37
Success story (2)
  • CDPP (data centre for plasma physics) made the
    EAST/DEDSL description mandatory accept the data
    he hosted. Based on these generic descriptions it
    offers some extraction facilities.
  • PHARAO (embedded atomic clock) designed all its
    telemetry with OASIS, then made a simulation for
    instrument tests purpose with EAST I/O library
    and produced its documentation with SCRIBE and
    ALADIN

38
Success story (3)
  • Helios II described all its ground segment
    interfaces with OASIS and used te EAST I/O
    libraries to read and write the corresponding
    files. The ICDs are managed with SCRIBE. From
    that experience we learnt a lot comparing with
    Helios I... The sub-system integration faced much
    less problems due to the formal definition of the
    interfaces. That was the initial goal and it was
    reached.

39
Near future
40
Near future
  • Even if we still propose EAST technology for
    binary telemetries (most difficult cases of COROT
    telemetry for instance) we are investing a lot on
    the XML part of BEST.
  • Generic XML tools offer an XML grammar but do not
    support any domain skills.
  • The modeller could help in designing data and
    producing the documentation.

41
Contacts
42
Contacts
  • For any EAST/DEDSL question there is a hot-line
    at
  • eastcnes.fr
  • To get BEST version 1.0 and related information
  • http//debat.c-s.fr
  • To get the previous versions
  • logiciels.cnes.fr

43
Conclusion
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