NASA Scientific and Technical Aerospace Reports

in 2005. Progress is also described towards realizing a two-dimensional thermopile array built over CMOS readout circuitry
in the substrate.
Author
Thermopiles; Bolometers; Detectors; Pyroelectricity; Radiometers; Linear Arrays
20040068216 Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, USA
Large Format Narrow-Band, Multi-Band, and Broad-Band LWIR QWIP Focal Planes for Space and Earth Science
Applications
Gunapala, S. D.; Bandara, S. V.; International Thermal Detectors Workshop (TDW 2003); February 2004, pp. 7-12 - 7-15;
In English; See also 20040068186; No Copyright; Avail: CASI; A01, Hardcopy
A 640x512 pixel, long-wavelength cutoff, narrow-band (delta(lambda)/approx. 10%) quantum well infrared photodetector
(QWIP) focal plane array (FPA), a four-band QWIP FPA in the 4-16 m spectral region, and a broad-band (delta(lambda)/
approx. 42%) QWIP FPA having 15.4 m cutoff have been demonstrated.
Author
Narrowband; Broadband; Focal Plane Devices; Infrared Radiation; M Region; Spectral Bands
20040068390 NASA Marshall Space Flight Center, Huntsville, AL, USA
Spaceflight Operations Services Grid (SOSG)
Bradford, Robert N.; Thigpen, William W.; [2004]; 3 pp.; In English; Ground Systems Architecture Workshop 2004, 30 Mar.
- 1 Apr. 2004, Manhatten Beach, CA, USA; No Copyright; Avail: Other Sources; Abstract Only
In an effort to adapt existing space flight operations services to new emerging Grid technologies we are developing a
Grid-based prototype space flight operations Grid. This prototype is based on the operational services being provided to the
International Space Station’s Payload operations located at the Marshall Space Flight Center, Alabama. The prototype services
will be Grid or Web enabled and provided to four user communities through portal technology. Users will have the opportunity
to assess the value and feasibility of Grid technologies to their specific areas or disciplines. In this presentation descriptions
of the prototype development, User-based services, Grid-based services and status of the project will be presented. Expected
benefits, findings and observations (if any) to date will also be discussed. The focus of the presentation will be on the project
in general, status to date and future plans. The End-use services to be included in the prototype are voice, video, telemetry,
commanding, collaboration tools and visualization among others. Security is addressed throughout the project and is being
designed into the Grid technologies and standards development. The project is divided into three phases. Phase One establishes
the baseline User-based services required for space flight operations listed above. Phase Two involves applying Gridlweb
technologies to the User-based services and development of portals for access by users. Phase Three will allow NASA and
end users to evaluate the services and determine the future of the technology as applied to space flight operational services.
Although, Phase One, which includes the development of the quasi-operational User-based services of the prototype,
development will be completed by March 2004, the application of Grid technologies to these services will have just begun.
We will provide status of the Grid technologies to the individual User-based services. This effort will result in an extensible
environment that incorporates existing and new spaceflight services into a standards-based framework providing current and
future NASA programs with cost savings and new and evolvable methods to conduct science. This project will demonstrate
how the use of new programming paradigms such as web and grid services can provide three significant benefits to the
cost-effective delivery of spaceflight services. They will enable applications to operate more efficiently by being able to utilize
pooled resources. They will also permit the reuse of common services to rapidly construct new and more powerful
applications. Finally they will permit easy and secure access to services via a combination of grid and portal technology by
a distributed user community consisting of NASA operations centers, scientists, the educational community and even the
general population as outreach. The approach will be to deploy existing mission support applications such as the Telescience
Resource Kit (TReK) and new applications under development, such as the Grid Video Distribution System (GViDS), together
with existing grid applications and services such as high-performance computing and visualization services provided by
NASA s Information Power Grid (IPG) in the MSFC s Payload Operations Integration Center (POIC) HOSC Annex. Once
the initial applications have been moved to the grid, a process will begin to apply the new programming paradigms to integrate
them where possible. For example, with GViDS, instead of viewing the Distribution service as an application that must run
on a single node, the new approach is to build it such that it can be dispatched across a pool of resources in response to
dynamic loads. To make this a reality, reusable services will be critical, such as a brokering service to locate appropriate
resource within the pool. This brokering service can then be used by other applications such as the TReK. To expand further,
if the GViDS application is constructed using a services-based mel, then other applications such as the Video Auditorium can
then use GViDS as a service to easily incorporate these video streams into a collaborative conference. Finally, as these
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