PDS3 Standards: Individual Issue

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Problem Summary: Instruments classified as imaging spectrometers are increasingly being used in planetary missions. Data from these instruments are naturally represented in a three-dimensional structure consisting of an image plane, with spectra associated with each pixel in the image. The ISIS group at the USGS has designed a data structure, the ISIS Cube, to represent this kind of data. But more importantly, the group has developed a tool suite, referred to collectively as ISIS software, which is capable of viewing and processing the ISIS Cube.

Beginning with Mars Odyssey, a number of planetary missions have requested a new object designed specifically for imaging spectrometer data which would enable compatibility with ISIS software. Two issues have driven development of the new SPECTRAL_QUBE object within PDS: (1) known problems with the existing PDS QUBE specification, and (2) the degree to which SPECTRAL_QUBE could be made more general and still maintain compatibility with the ISIS Cube structure. There were also considerations based on the fact that instrument teams were already generating or designing SPECTRAL_QUBE products, based on the emerging standard. This SPECTRAL_QUBE is an improvement over the existing QUBE object, both in rigor and in compatibility with current PDS and ISIS standards and represents a "best fit", given the design constraints.

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Working group: P. Garcia (lead) E. Rye, S. Slavney, R. Alanis, J. Zender, E. Grayzeck, L. Huber, R. Joyner, S. Hughes, C. Isbell

Originator: P. Garcia

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Standards Change Request:

Version	Date	Author(s)	Format	Note
14	2004-06-14	P. Garcia	PDF	Actually version 14b.

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Discussion:

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Supplementary Material:

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Status:

Status	Task	ResponsibleParty	Response
SUBMITTED 2002-11-14
IN_PROGRESS 2003-02-26
DRAFT 2004-06-09
APPROVED 2004-06-21
IN_IMPLEMENTATION 2004-06-21	Insert SPECTRAL_QUBE chapter into StdRef as A.25.	EN-SE	Addition of new chapter to StdRef completed by E. Rye on 08/17/05. Still requires proof-reading.
Proof-reading of new chapter completed by E. Rye on 1/11/06.
Insert group descriptions for BAND_BIN, BAND_SUFFIX, LINE_SUFFIX, and SAMPLE_SUFFIX into Appendix H of StdRef.	EN-SE	Addition of group descriptions to StdRef completed by E. Rye on 1/11/06
Update sections 12.4.5 and 13.2.1 of StdRef to remove restrictions on the use of GROUPs within OBJECTs.	EN-SE	Modifications of 12.4.5 and 13.2.1 in StdRef completed by E. Rye on 1/11/06
Submit updated StdRef to EN-OPS team.	EN-SE	E. Rye submitted v3.7 of StdRef to E. Law on 3/21/06.
Submit object definition template for SPECTRAL_QUBE to EN-OPS team.	EN-SE
Submit group definition templates for BAND_BIN, BAND_SUFFIX, LINE_SUFFIX, and SAMPLE_SUFFIX to EN-OPS.	EN-SE
Submit new element definition templates for ISIS_STRUCTURE_VERSION, MD5_CHECKSUM, BAND_BIN_BAND_NUMBER, BAND_BIN_FILTER_NUMBER, BAND_BIN_BASE, and BAND_BIN_MULTIPLIER to the EN-OPS team.	EN-SE
Submit updated element definition templates for the following keywords to the EN-OPS team: AXES, AXIS_NAME, CORE_ITEMS, CORE_ITEM_TYPE, CORE_ITEM_BYTES, SUFFIX_ITEMS, SUFFIX_BYTES, SUFFIX_NAME, SUFFIX_ITEM_BYTES, SUFFIX_ITEM_TYPE, BANDS, BAND_BIN_CENTER, BAND_BIN_UNIT, BAND_BIN_WIDTH, CORE_NAME, CORE_BASE, CORE_MULTIPLIER, CORE_UNIT, CORE_VALID_MINIMUM, CORE_NULL, CORE_LOW_REPR_SATURATION, CORE_LOW_INSTR_SATURATION, CORE_HIGH_REPR_SATURATION, CORE_HIGH_INSTR_SATURATION, SUFFIX_BASE, SUFFIX_MULTIPLIER, SUFFIX_VALID_MINIMUM, SUFFIX_NULL, SUFFIX_LOW_REPR_SAT, SUFFIX_LOW_INSTR_SAT, SUFFIX_HIGH_REPR_SAT, SUFFIX_HIGH_INSTR_SAT, SUFFIX_UNIT, BAND_BIN_STANDARD_DEVIATION, BAND_BIN_DETECTOR, BAND_BIN_GRATING_POSITION, BAND_BIN_ORIGINAL_BAND	EN-SE	E. Rye wrote revised element definition objects for AXES, AXIS_NAME, CORE_ITEM_BYTES, CORE_ITEM_TYPE, CORE_ITEMS, SUFFIX_BYTES, SUFFIX_ITEM_BYTES, and SUFFIX_ITEMS on 05/11/06. Also sent several emails to P. Garcia and C. Isbell with questions about specific implementation issues.
Notify EN-DEV team of required updates to tools.	EN-SE

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Votes:

The Management Council voted to APPROVE the SCR with a vote of 10-0-2. The vote took place during a telecon on June 21, 2004 on version 14b of the SCR.

Node	Representative	Version 14
ATM	yes
GEO	yes
IMG	yes
NAIF	yes
PPI	yes
RINGS	yes
RS	abstain
SBN	abstain
PDS-PM	yes
PDS-PS	yes
PDS-PE	yes
CN-ML	yes