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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 1,729 records · Page 96

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NASA NTRS2001

AIRS Science Processing System (ASPS): a description of architecture and capabilities

This paper describes the architecture of the AIRS Science Processing System (SPS) used to process AIRS data.

AIRS ASPS SPS TLSCF TDS↗

NASA NTRS2001

System input/output (SIO) slice: description and status

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Europa Orbiter SIO system input/output↗

NASA NTRS2000

Theoretical Description of a Bistatic System for Ocean Altimetry Using the GPS Signal

The paper presents the fundamental characteristics of bistatic altimetry performed using the Global Positioning System (GPS) signal scattered off the ocean surface and collected by a receiver in space.

Ocean Topography GPS Bistatic Geometry Coherence T↗

NASA NTRS2000

Phylogenetic Characterization and Description of Novel Heat-tolerant Bacillus Species Isolated from Spacecraft Assembly Facility

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Spacecraft Assembly Facility Phylogeny spore forme↗

NASA NTRS2000

Characterization and Description of Heat-tolerant Bacillus Species Isolated Form Spacecraft Assembly Facility

Forward contamination of samples with cells or biomarkers from Earth would seriously compromise interpretation of results of a Space sample return mission.

Spacecraft Assembly Facility Bacillus Phylogeny He↗

NASA NTRS2000

Phylogenetic Characterization and Description of Novel Heat-tolerant Bacillus Species Isolated form Spacecraft Assembly Facility

Microbial biofilms representing both Gram-positive and Gram-negative bacteria were artificially coated onto aluminum metal surfaces that are chiefly used in building spacecraft.

thermo-tolerance phylogeny↗

NASA NTRS2000

A Technical Description of Atmospheric Sounding by GPS Occultation

In recent years, the Global Positioning System (GPS) has been exploited via radio occultation techniques to obtain profiles of refractivity, temperature, pressure and water vapor in the neutral atmosphere and electron density in the ionosphere.

sensing↗

NASA NTRS2000

Sea Winds on QuikSCAT: Sensor Description and Mission Overview

The SeaWinds instrument is the first pencil-beam scatterometer to routinely measure ocean surface winds from space.

scatterometer QuickSCAT↗

NASA NTRS2000

Mission and Computing Support (MACS) Technical Description Document (TDD)

The Mission And Computing Support (MACS) Contractor in accordance with contract number 958226 shall provide engineering, operations, and maintenance support to JPL core systems and Flight Projects.

TMOD MACS IPC JPL ICIS TDD↗

NASA NTRS1998

On the Use of Robotics Formalism in the Description and Modeling of Antenna Range Positioners

A typical positioner used for positioning an antenna under test on an antenna range has two or three rotation axes arranged in such a manner as to facilitate the taking of data along certain paths through the antenna pattern.

Robotics Antenna Range Positioners↗

NASA NTRS1997

On the Use of Robotics Formalism in the Description and Modeling of Antenna Range Positioners

A typical positioner used for positioning an antenna under test on an antenna range has two or three rotation axes arranged in such a manner as to facilitate the taking of a data along certain paths through the antenna pattern.

Robots Antenna↗

NASA NTRS1996

Proposed Functional Description for Phased Arrays

Generally speaking, many photonic engineers, while working in a systems development mode, still focus on presenting the unique physical details of the optical elements, instead of using functional representation to describe the system. The purpose of this presentation is to introduce symbols that can be used to represent the functional intent of most of the phased array architecture.

Phased Arrays systems development mode optical ele↗

NASA NTRS1996

Model for Process Description: From Picture to Information System

A new model for the development of proces information systems is proposed. It is robust and inexpensive, capable of providing timely, neccessary information to the user by integrating Products, Instructions, Examples, Tools, and Process.

faster better cheaper low cost missions reengineer↗

NASA NTRS1993

TOPEX/Poseidon Microwave Radiometer (TMR): 1. Instrument Description and Antenna Temperature Calibration

The TOPEX/Poseidon Microwave Radiometer (TMR) is a 3-frequency radiometer flown on the TOPEX/Poseidon (T/P) satellite in low Earth orbit. It operates at 18, 21 and 37 GHz in a nadir only viewing direction which is co-aligned with the T/P radar altimeters. TMR monitors and corrects for the electrical path delay of the altimeter radar signal due to water vapor and non-precipitating liquid water in the atmosphere. This paper describes the TMR instrument and the radiometric instrument calibration required to derive antenna temperature (T_A) from the raw digital data. T_A precision of 0.4 K is predicted on orbit in all expected thermal environments. T_A accuracy of 0.5-0.6 K is expected following a post-launch field calibration campaign. When uncertainties related to antenna sidelobe corrections are included, this T_A accuracy yields a brightness temperature accuracy of 0.7- 0.8 K...

Ruf, C. S.↗

NASA NTRS1994