| Introduction to Spiral Development |
18 May 2012 |
25 pages |
| Authors:
Peter Hantos; AEROSPACE CORP EL SEGUNDO CA
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| Do You Know the Difference Between Process Life Cycle and Life Cycle Process? |
18 May 2012 |
35 pages |
| Authors:
Peter Hantos; AEROSPACE CORP EL SEGUNDO CA
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| Agile Software Development in Defense Acquisition: A Mission Assurance Perspective |
23 Mar 2012 |
86 pages |
| Authors:
Peter Hantos; AEROSPACE CORP EL SEGUNDO CA
|
 | Readers will be able to - Name popular agile software development methods - Describe representative agile software development practices - Compare agile and traditional development methods - Assess the appropriateness of an organization's software development practices - Appreciate the spirit and usefulness of mission assurance in carrying out the evaluations of the defense contractors' software development practices - Differentiate between agility in acquisition and agility in development |
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| The Elements of an Effective Software Development Plan - Software Development Process Guidebook |
11 Nov 2011 |
219 pages |
| Authors:
Marvin C Gechman; Suellen Eslinger; AEROSPACE CORP EL SEGUNDO CA
|
| Every software development program must have a Software Development Plan (SDP). The SDP is required by the software development standards, it is prepared by the contractor, and it is usually submitted with their proposal. The SDP is the vehicle by which the contractor, responsible for software development, documents how the software will be designed, developed, integrated, tested and managed. The principal objectives of this SDP Guidebook are to: (1) Assist ... |
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| Dynamic Modeling for Project Management |
18 May 2011 |
38 pages |
| Authors:
Dan Houston; AEROSPACE CORP EL SEGUNDO CA
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| The Effective Use of System and Software Architecture Standards for Software Technology Readiness Assessments |
May 2011 |
78 pages |
| Authors:
Peter Hantos; AEROSPACE CORP EL SEGUNDO CA
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| Trapped Electron Model 2 (TEM-2) |
25 Apr 2010 |
70 pages |
| Authors:
Paul O'Brien; Timothy B Guild; AEROSPACE CORP EL SEGUNDO CA
|
| We present a next-generation radiation specification for the electron radiation belts. The specification includes an empirical model of the statistical variation and spatiotemporal covariation of electron fluxes from 40 keV to 10 MeV in the inner and outer zones, as well as a dynamic full solar-cycle reanalysis, which provides a global snapshot of the electron fluxes every 6 hours from 1992 to 2008. The statistical model is derived from data ... |
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| Automated Generation of Failure Modes and Effects Analyses from AADL Architectural and Error Models |
Apr 2010 |
26 pages |
| Authors:
Myron Hecht; Alexander Lam; Russell Howes; Christopher Vogl; AEROSPACE CORP EL SEGUNDO CA
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| The Holy Grail of Agile Acquisition |
Apr 2010 |
36 pages |
| Authors:
Peter Hantos; AEROSPACE CORP EL SEGUNDO CA
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| Software Technology Readiness Assessment. Defense Acquisition Guidance with Space Examples |
Apr 2010 |
83 pages |
| Authors:
Peter Hantos; AEROSPACE CORP EL SEGUNDO CA
|
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| Life Test of 76-Ah Nickel-Hydrogen Cell Designs After 14 Years of Storage |
10 Jan 2010 |
22 pages |
| Authors:
Albert H Zimmerman; Michael V Quinzio; AEROSPACE CORP EL SEGUNDO CA
|
| A matrix of twelve nickel-hydrogen cells were built in 1988 to develop and validate the Man Tech nickel-hydrogen cell design that has subsequently been used in a wide range of space applications. This cell matrix included three design variations: precharge (hydrogen or nickel), electrolyte concentration (31 % or 38%), and electrolyte amount (drained or drained plus 20 cc). In 2003, eight of these cells were put into a life test ... |
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| Particle Deposition onto Enclosure Surfaces |
20-Aug-2009 |
61 pages |
| Authors:
De-Ling Liu; AEROSPACE CORP EL SEGUNDO CA
|
| In space applications, the main concern of particle deposition arises from the undesirable effects of surface obscuration on contamination-sensitive surfaces. The development of effective mitigation strategies to minimize particulate contamination requires the understanding of particle transport and deposition as well as the associated physical factors affecting the processes. The knowledge gleaned from the state-of-the-art literature review presented here can be applied to an enclosure scale as small as a spacecraft ... |
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| Airborne Particulate Sampling in Environmental Control Systems |
15 Jul 2009 |
44 pages |
| Authors:
De-Ling Liu; Kenneth T Luey; AEROSPACE CORP EL SEGUNDO CA
|
| HEPA-filtered purge air supplied by an environmental control system (ECS) is used to protect encapsulated spacecraft from particulate contamination. Therefore, it is imperative to acquire representative air samples from the ECS ducts in order to ensure that the air cleanliness requirements per mission specifications are achieved. Based on well-established work involving particle transport in the literature, this report quantitatively examines the particle sampling efficiency with respect to the sampling apparatus ... |
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| Genetic Modeling of Battery Performance |
10 Jul 2009 |
35 pages |
| Authors:
Albert H Zimmerman; AEROSPACE CORP EL SEGUNDO CA
|
| A state-of-the-art, first-principles lithium-ion cell model has been used to describe the changes in the performance of a 50- Ah cell during the first 7563 cycles of its life. This model was fit to the life test database using a genetic adaptation algorithm that provided degradation trends for nine different parameters that described the processes most likely to undergo change during the life of the cell. Based on the model ... |
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| Ascent Particle Filter Molecular Conductance Study |
06-Apr-2009 |
39 pages |
| Authors:
Keith R Olson; Kelsey A Folgner; Randy M Villahermosa; AEROSPACE CORP EL SEGUNDO CA
|
| Ascent particle filters on enclosures containing space hardware, such as electronics boxes, regulate venting of these enclosures during launch and ascent. While allowing venting to occur, these filters prevent the transport of particles into and out of the enclosures. Particle filters are primarily chracterized with respect to the flow of gas through the filter; the conductance of outgassed molecules is not quantified. This report documents a series of tests performed ... |
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| Environmental Variation in Contamination Outgas Testing of a Composite Material |
15-Mar-2009 |
30 pages |
| Authors:
Keith R Olson; Kelsey A Folgner; AEROSPACE CORP EL SEGUNDO CA
|
| Molecular contamination degrades sensitive spacecraft surfaces and can adversely affect the useful life of a spacecraft. In order to accurately predict mission performance, a thorough understanding of the emission and condensation of potential spacecraft contaminants is necessary. Potential sources of contamination include composite materials that are often used for large structural components. The large mass of these composite structures can represent the largest outgassing source on a spacecraft. This report ... |
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| Evolution and Energization of Energetic Electrons in the Inner Magnetosphere |
15-Jan-2009 |
33 pages |
| Authors:
Joseph F Fennell; James L Roeder; AEROSPACE CORP EL SEGUNDO CA
|
| A review is presented of what we know about the evolution and energization of energetic electrons in the inner magneto- sphere. We emphasize what we have learned since the review by Friedel et al. (2002) with the primary result being a greater focus on local acceleration processes and significant new evidence that points to processes that are acting in the region between GPS and geosynchronous altitudes. We use as an ... |
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| Particulate Infiltration into a Simulated Space Telescope |
31 Dec 2008 |
24 pages |
| Authors:
De-Ling Liu; Kenneth T Luey; AEROSPACE CORP EL SEGUNDO CA
|
| To understand the dynamics of airborne particulate intrusion into a space telescope, a mechanistic model based on mass balance was developed to predict the extent to which ambient particles penetrate through vent holes and enter the interiors after the purge is off. This work describes the mathematical modeling analysis, supplementing with results from laboratory measurements using a cylindrical chamber as a simulated space telescope. It was found that the characteristic ... |
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| Evaluation of a Simple Proof Test of Planar Ferrite Cores |
20-Dec-2008 |
14 pages |
| Authors:
de la; Aldrich Cruz; David Witkin; AEROSPACE CORP EL SEGUNDO CA
|
| Ferrites are soft magnetic materials that have a wide range of uses in microwave circuits. Many otherwise flight-qualified parts may have a variety of defects arising from fabrication and handling. A finite-element analysis (FEA) was performed to design a simple proof test for a particular planar ferrite core geometry. A 3-point bend test and three different geometries of 4-point bend tests were modeled to determine the distribution of tensile stress ... |
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| Reentry Breakup and Survivability Characteristics of the Vehicle Atmospheric Survivability Project (VASP) Vehicles |
05-Aug-2008 |
26 pages |
| Authors:
Richard G Stern; AEROSPACE CORP EL SEGUNDO CA
|
| The breakup of two satellites (Vehicle Atmospheric Survivability Project) during atmospheric reentry is documented. The satellites were deboosted from orbit, and their subsequent reentries were observed by surface-based radars and optics as well as airborne optics. Numerous pieces of satellite debris were tracked, and, in some cases, their heritage identified. The breakup process substantiated the heating relationships derived from the VAST test, which is an order of magnitude less than ... |
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| Thermal Conductivity and Speed of Sound Measurements of Liquid Hydrazine (N2H4) at 293.15K and 0.101 MPa to 2.068 MPa |
25 APR 2008 |
23 pages |
| Authors:
John D. DeSain; Brian B. Brady; AEROSPACE CORP EL SEGUNDO CA
|
| The thermal conductivity of liquid hydrazine was measured by the steady-state hot-wire method at 293.15K and 0.101 MPa. Eight pure organic liquids were used as reference liquids to calibrate the experimental apparatus. The current measurement is in agreement with one recent measurement. However, the current measurement disagrees with the most recent measurement, as well as several previous measurements and estimation methods. The thermal conductivity was determined to change very little ... |
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| The Effect of Teflon Emulsion on Hydrogen Electrode Properties and Performance in Nickel-Hydrogen Cells |
30 JAN 2008 |
44 pages |
| Authors:
Margot Wasz; Albert Zimmerman; AEROSPACE CORP EL SEGUNDO CA
|
| The traditional T30 Teflon emulsion used in nickel-hydrogen battery cells is being phased due to EPA concerns with two of its minority components. This presentation reviews work done to date by The Aerospace Corporation to better understand the relationship between the properties of the hydrogen electrode affected by the Teflon emulsion and cell performance. Special cycling tests have been derived to selectively stress the hydrogen electrode with minimum stress to ... |
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| Micrometeoroid and Orbital Debris Environments for the International Space Station |
15 DEC 2007 |
12 pages |
| Authors:
T. E. Gallini; J. A. Hackwell; D. C. Marin; Michael Zambran; Glenn E. Peterson; David K. Lynch; AEROSPACE CORP EL SEGUNDO CA
|
| Baseline micrometeoroid and orbital debris fluence estimates for spacecraft in low Earth orbit (LEO) are provided. For these calculations, an orbit similar to that of the International Space Station (ISS) is used. |
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| HEO Satellite Surface and Frame Charging and SCATHA Low-Level Frame Charging |
15 NOV 2007 |
23 pages |
| Authors:
Joseph F. Fennell; James L. Roeder; AEROSPACE CORP EL SEGUNDO CA
|
| In this report, we show the results of spacecraft frame and differential potentials that have been measured over several years on a highly elliptical orbit, HEO2, satellite. The measurements are of charging levels |
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| Evaluation of GPS Block IIR Time Keeping System for Integrity Monitoring |
01-Nov-2007 |
13 pages |
| Authors:
Andy Wu; AEROSPACE CORP EL SEGUNDO CA
|
| Onboard GPS clock monitoring will be required for GPS III satellites. This paper will discuss some of the key integrity monitoring parameters in the context of the GPS Block IIR TKS. The paper will also show that: (1) the phase meter output, comparing the phase difference of the Rb Atomic Frequency Standard (AFS) and the VCXO in a 1.5-second GPS epoch, behaves like a Gaussian distribution; (2) The TKS probability ... |
|
| Testing of LiAlH4 as a Potential Additive to Paraffin Wax Hybrid Rocket Fuel |
30 OCT 2007 |
23 pages |
| Authors:
John D. DeSain; Thomas J. Curtiss; Ronald B. Cohen; Brian B. Brady; Steven A. Frolik; AEROSPACE CORP EL SEGUNDO CA
|
| The burn rate of paraffin wax fuel was measured in air with and without addition of LiAlH4. The paraffin wax was mixed with 7-24% LiAlH4(lithium aluminum hydride) by weight. The wax was then molded into candles. The candles where lit in air, and the mass loss with time was recorded. The 24% LiAlH4 was found to enhance the burn rate of the candles by a factor of 14. LiAlH4 was ... |
|
| High-Performance 1645-nm Er: YAG Laser |
25 SEP 2007 |
12 pages |
| Authors:
Da-Wun Chen; Todd S. Rose; Steven M. Beck; Milton Birnbaum; AEROSPACE CORP EL SEGUNDO CA
|
| The efficiency and output of the resonantly fiber-laser-pumped Er: AYG laser at 1645 nm using 0.25% doped crystal out-performed the 0.5% doped crystal. in addition to the reported decrease in efficiency because of cooperative up conversion, a significant loss of laser output during Q-switched operation was observed and identified as two-photon absorption. This is deleterious in the short-pulse, high-intensity operational regime. |
|
| Pico Satellite Solar Cell Testbed (PSSC Testbed) |
25 SEP 2007 |
31 pages |
| Authors:
E. J. Simburger; S. Liu; J. S. Halpine; D. A. Hinkley; D. L. Rumsey; J. E. Granata; H. Yoo; AEROSPACE CORP EL SEGUNDO CA
|
| The PSSC Testbed flight experiment is designed to obtain space environment degradation data for advanced solar cells. The purpose of this particular experiment is to develop and operationally test the picosatellite and associated ground station. This picosat could be the starting point for the development of a responsive space vehicle that would provide the capability of obtaining actual space environment exposure of new solar cell technology in a time frame ... |
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| Materials on the International Space Station Experiment (MISSE): Optical Analysis of Molecular Contamination on PEC1 Tray 2 |
20 FEB 2007 |
21 pages |
| Authors:
P. D. Fuqua; C. J. Panetta; J. D. Barrie; AEROSPACE CORP EL SEGUNDO CA
|
| Silicon wafers were mounted on the exterior of the International Space Station as a part of MISSE. Post-flight ellipsometry and reflectometry were employed to show that the silicon wafers gained about a 420-A-thick layer of a silica-like contaminant with BRDF scatter values around 1 x l0% per steradian. |
|
| Formation of Contaminant Droplets on Surfaces |
15 DEC 2006 |
24 pages |
| Authors:
K. T. Luey; D. J. Coleman; AEROSPACE CORP EL SEGUNDO CA
|
| The effects of molecular film contamination on optical systems depend strongly on the film uniformity and thickness. Molecular films of uniform thickness are responsible for light transmission losses through absorption. For example, a partially darkened film of dioctyl phthalate 100 A thick may cause losses of about 2% in the visible spectrum. However, Ternet, et al, Villahermosa, et al, and others have shown that scattering from droplets or "puddles" can ... |
|
| Digital Imaging and Analysis of Particulate Contamination |
15 DEC 2006 |
23 pages |
| Authors:
K. T. Luey; D. P. Taylor; D. J. Coleman; K. A. Folgner; AEROSPACE CORP EL SEGUNDO CA
|
| The use of digital cameras and digital imaging software for the measurement of particle obscuration is discussed. Novel calibration standards are used to evaluate the sensitivity and accuracy of commercially available digital cameras for detecting microscopic dust particles and other contaminant features on surfaces. Lighting and illumination effects are also illustrated and discussed. The digital image histogram of particles on a surface is shown to give good results for the ... |
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| Thin-Film Photovoltaic Proton and Electron Radiation Testing for a MEO Orbit |
2006 |
5 pages |
| Authors:
J. E. Granata; T. D. Sahlstrom; P. Hausgen; S. R. Messenger; R. J. Walters; J. R. Lorentzen; Simon Liu; Roger Helizon; AEROSPACE CORP EL SEGUNDO CA
|
| A radiation test plan for thin-film photovoltaic technologies focused on a MEO flight experiment is outlined. The proton and electron radiation response of thin film, amorphous Si solar cells and CuInGaSe2 solar cells, with and without space coatings, is presented. The degradation of the photovoltaic output under penetrating and junction-damaging proton irradiation, and 0.6 MeV and 1 MeV electron irradiation, is measured and examined. The experimental data are presented and ... |
|
| The Infrared Spectral Signature of Water Ice in the Vacuum Cryogenic AI&T Environment |
31 DEC 2005 |
21 pages |
| Authors:
D. K. Lynch; AEROSPACE CORP EL SEGUNDO CA
|
| In a thermal vacuum testing of spacecraft sensors, water ice can condense on optical surfaces. The most common source of water vapor is out-gassing from multilayer insulation(MLI). In the infrared, such ice films can significantly absorb radiation leading to lower performance of the sensor system. If chamber ice is heated, it normally sublimes (vaporizes directly from the solid state) at a temperature of around 150K. In an earlier paper aimed ... |
|
| Evolutionary Acquisition and Spiral Development Tutorial |
30 SEP 2005 |
113 pages |
| Authors:
P. Hantos; AEROSPACE CORP EL SEGUNDO CA
|
| The publication of Department of Defense (DOD) Directives 5000.1 and 5000.2 established a preference for the use of evolutionary acquisition and spiral development in the acquisition of complex weapon systems. NSS Acquisition Policy 03-01 provided some space-oriented customization and, similarly to the original DOD directives, also positioned Evolutionary Acquisition and Spiral Development as preferred strategies for the space domain. The tutorial's key objectives are to establish proper life cycle modeling ... |
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| VIIRS Initial Performance Verification. Subassembly, Early Integration and Ambient Phase I Testing of EDU |
25 JUL 2005 |
5 pages |
| Authors:
Tanya Scalione; Frank De Luccia; John Cymerman; Eric Johnson; James K. McCarthy; Debra Olejniczak; AEROSPACE CORP EL SEGUNDO CA
|
| This paper will examine the initial results of performance verification testing of the first VIIRS sensor, the Engineering Development Unit (EDU). The EDU was completed and began the initial stages of integration testing in late 2004. As the EDU progresses through ambient and thermal vacuum testing, test data are collected, analyzed, and evaluated. Raytheon SBRS evaluates the data for compliance with sensor specifications. Northrop Grumman evaluates the data to ensure ... |
|
| Investigation of CONOPS for ISR and Weapon Systems in Missions against Targets Employing Deceptive Tactics |
23 JUN 2005 |
33 pages |
| Authors:
William Maillard; AEROSPACE CORP EL SEGUNDO CA
|
| Survey Concealment, Camouflage and Deception (CCD) techniques and approaches to modeling them. Represent characteristics and first order effects of CCD techniques in the SEAS theater level model. Support training in Military Utility Analysis methods and tools as part of IR & D. Investigate the potential contributions of advanced ISR and weapon systems to the engagement of TBM target elements employing CCD tactics. |
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| Dilution of Disposal Orbit Collision Risk for the Medium Earth Orbit Constellations |
13 MAY 2005 |
39 pages |
| Authors:
A. B. Jenkin; R. A. Gick; AEROSPACE CORP EL SEGUNDO CA
|
| Previous studies have shown that disposal orbits for the medium Earth orbit constellations can be unstable and undergo significant long-term eccentricity growth. This can lead to repenetration of the constellations by disposed vehicles, thereby posing a collision risk. The study presented here investigated the possibility of diluting disposal orbit collision risk by exploiting long-term eccentricity growth. The Galileo constellation was selected as an example. Various disposal strategies were considered. It ... |
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| Using Composites in Seismic Retrofit Applications |
20 APR 2005 |
201 pages |
| Authors:
V. M. Karbhari; AEROSPACE CORP EL SEGUNDO CA
|
| This report was prepared to provide a comprehensive review of the state-of-the-art for using composite materials for seismic retrofit applications. The emphasis is on seismic retrofit of reinforced concrete columns. The report is presented in eleven chapters. Chapters 1-3 provide a basic introduction to composite materials, including discussions on the types of matrix and reinforcement materials, processing methods, and basic mechanics. Polymer matrix composites with continuous carbon or glass fibers ... |
|
| The Application of Qualification Testing, Field Testing, and Accelerated Testing for Estimating Long-Term Durability of Composite Materials for Caltrans Applications |
25 FEB 2005 |
100 pages |
| Authors:
G. L. Steckel; G. F. Hawkins; AEROSPACE CORP EL SEGUNDO CA
|
| Caltrans has begun utilizing composite materials in several bridge applications, including girders and decks on new bridges, replacement decks and seismic retrofit of columns on old bridges, and for general structural reinforcement. Formal procedures for the evaluation and qualification of composite casings for seismic retrofit of bridge columns were adopted in 1995 and are being applied by Caltrans to all structural applications of composite materials. Environmental durability testing to ensure ... |
|
| Porosity Characteristics of Nickel Sinter |
15 FEB 2005 |
32 pages |
| Authors:
A. H. Zimmerman; G. A. To; AEROSPACE CORP EL SEGUNDO CA
|
| The porosity characteristics of sintered-nickel plaque made by a range of manufacturing processes for use in the nickel electrodes in nickel hydrogen cells have been measured. These characteristics include variations in porosity and pore size through the thickness of the sinter, as well as the uniformity of the sinter. Sinter made using an aqueous slurry process is found to provide the uniformity typically found in dry-powder sinter processes, with the ... |
|
| Pico Satellite Solar Cell Testbed (PSSC Testbed) |
2005 |
4 pages |
| Authors:
Edward J. Simburger; Simon Liu; John Halpine; David Hinkley; Daniel Rumsey; Henry Yoo; AEROSPACE CORP EL SEGUNDO CA
|
| The Picosatellite Solar Cell (PSSC) Testbed flight experiment is designed to obtain space environment degradation data for advanced solar cells. The purpose of the first flight (ISS orbit) is to develop and operationally test the picosatellite and associated ground station. Subsequent flights will be in a Geosynchronous Transfer Orbit, which will provide accelerated radiation degradation data for missions to geosynchronous orbit. |
|
| Aerothermal Heating for Satellite Reentry Conditions |
22 SEP 2004 |
21 pages |
| Authors:
Richard G. Stern; AEROSPACE CORP EL SEGUNDO CA
|
| Equations are presented which provide heating rates for objects reentering the Earth's atmosphere. The relationships are appropriate for estimating the survival or aerothermal breakup of a reentering vehicle. The relationships presented in this report predict heating which is an order of magnitude less than predicted by existing theory. The results presented in this report are based on numerous satellite reentry experiments conducted over the last three decades. |
|
| Strength Degradation of Filament-Wound Graphite/Epoxy Tubes Due to Either Impact Damage or Fabrication Defects |
01 AUG 2004 |
17 pages |
| Authors:
D. J. Chang; H. A. Katzman; AEROSPACE CORP EL SEGUNDO CA
|
| Two test series were conducted to assess the strength degradation of filament-wound graphite/epoxy tubes caused by impact damage or fabrication defects. The defects were either helical wrinkles or a hoop wrinkle inside the tube walls. The baseline tube configuration had a nine-ply (+10 deg, -10 deg, 90 deg)3 lay-up, with the exception of one tube having a (+15 deg, -l5 deg, 90 deg, 90 deg)3 stacking sequence. The latter lay-up ... |
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| Grid Computing: Topology-Aware, Peer-to-Peer, Power-Aware, and Embedded Web Services |
22 SEP 2003 |
41 pages |
| Authors:
Craig A. Lee; AEROSPACE CORP EL SEGUNDO CA
|
| Summary and Review: 1) Component "Web Service" Architectures with well-known namespace conventions; 2) Topology-Aware Communication Services will become essential; 3) Peer-to-Peer Systems will manage much of this; 4) Program meta-models with grid-aware "back-ends:" 5) Mobile, Ad Hoc, Embedded grids are coming. |
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| Battery Voltage Fluctuations during Penumbral Passage |
20 JUN 2003 |
13 pages |
| Authors:
A. H. Zimmerman; AEROSPACE CORP EL SEGUNDO CA
|
| The effect of power system load fluctuations on nickel-hydrogen battery cell voltage has been examined during simulated transit from discharge to charge as a satellite traverses a penumbral region of space The types of cell and battery resistances that can affect the voltage ripple are identified and measured for an aged 60-Ah nickel-hydrogen cell, and are found to range from 0. 95 to 1.25 V for a 22-cell battery for ... |
|
| The Crystal Oscillator Characterization Facility at the Aerospace Corporation |
Dec 2002 |
13 pages |
| Authors:
S Karuza; M Rolenz; A Moulthrop; A Young; V Hunt; AEROSPACE CORP EL SEGUNDO CA
|
| At the present time, there is a need by the military for small, low-power, fast-warmup, and low g-sensitivity crystal oscillators for use in GPS receivers and transmitters in handheld survival radios and smart munitions. These units require a stable frequency source (crystal oscillators or small rubidium atomic clocks) for their operation. A variety of crystal oscillators are now on the market, and there is a need to evaluate the latest ... |
|
| Radiometric Calibration Methodology for Near-Infrared Instrumentation |
20 OCT 2002 |
14 pages |
| Authors:
R. J. Rudy; AEROSPACE CORP EL SEGUNDO CA
|
| This document describes the selection of a laboratory-based, spectroradiometric standard to provide for the calibration of the near-infrared instrumentation of the Remote Sensing Department of the Space Sciences Application Laboratory. The goal is to provide a source whose spectral emittance is known to better than 1% over the entire near-infrared spectral region (0.8-2. 5 mironm) and which can be calibrated directly at the National Institute of Standards (NIST). The source ... |
|
| Refactored Characteristics of Intelligent Computing Systems |
Aug 2002 |
9 pages |
| Authors:
Christopher Landauer; Kirstie L Bellman; AEROSPACE CORP EL SEGUNDO CA
|
| We have discussed the following measurable characteristics of intelligent behavior in computing systems: (1) speed and scope of adaptability to unforeseen situations; (2) rate of effective learning of observations; (3) accurate modeling and prediction of the relevant external environment; (4) speed and clarity of problem identification and formulation; (5) effective association and evaluation of disparate information; (6) identification of more important assumptions and prerequisites; (7) creation and use of symbolic ... |
|
| SMC Orbital/Sub-Orbital Debris Mitigation User's Handbook, Version 1.0 |
JUL 2002 |
70 pages |
| Authors:
W. S. Campbell; D. M. Nerio; AEROSPACE CORP EL SEGUNDO CA
|
| The purpose of this handbook is to provide Space and Missile Systems Center (SMC) space system developers a reference for use in satisfying DoD and National Space Policy regarding the Mitigation and Control of space debris. Meeting policy objectives involves mitigation of the effects of the debris environment on military space systems as well as mitigation of the effects of military space systems on other users of space. This handbook ... |
|
| Precision Measurements of Absorption and Refractive-Index Using an Atomic Candle |
20 MAR 2002 |
10 pages |
| Authors:
T. Swan-Wood; J. G. Coffer; J. C. Camparo; AEROSPACE CORP EL SEGUNDO CA
|
| Across a broad range of disciplines, the accurate determination of an electromagnetic wave's amplitude (either absolute or relative) has considerable relevance. Here, we demonstrate a novel and potentially very precise method for making intensity measurements based on the atomic stabilization of electromagnetic field-strength. For ease of reference, and by analogy to atomic clocks, we refer to this field-strength stabilization system as an atomic candle. While the candle's original purpose was ... |
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Reports by Corporate Author
