| Space Radiation Effects in Advanced Solar Cell Materials and Devices |
JAN 2002 |
12 pages |
| Authors:
R. J. Walters; G. P. Summers; NAVAL RESEARCH LAB WASHINGTON DC
|
 | An investigation of the physical mechanisms governing the response of III-V based solar cells to particle irradiation is presented. The effect of particle irradiation on single and multijunction solar cells is studied through current vs. voltage, spectral response, and deep level transient spectroscopy measurements. The basic radiation response mechanisms are identified, and their effects on the solar cell electrical performance are described. In particular, a detailed analysis of multijunction In(x)Ga(1-x)P/In(y)Ga(1-y)As/Ge ... |
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| Sea-Based Airpower--The Decisive Factor in Expeditionary Operations? Norway 1940, Falkland Islands 1982 |
2002 |
61 pages |
| Authors:
Willard A. Buhl; MARINE CORPS COMMAND AND STAFF COLL QUANTICO VA
|
| This essay examines the British sea-based aviation in support of two modern amphibious campaigns: the British campaign in Norway in 1940 and the Falkland Islands War in 1982. Expeditionary maneuver warfare (EMW) operations and sustainable littoral power projection will require versatile and flexible sea-based airpower to establish local air superiority over the fleet. Whereas land-based aircraft can attack fleets from great distances, current land-based fighters cannot protect the fleet from ... |
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| MightySat II.1 Hyperspectral Imager: Summary of On-Orbit Performance |
2002 |
|
| Authors:
Summer Yarbrough; Thomas Caudill; Eric Kouba; Victor Osweiler; James Arnold; AIR FORCE RESEARCH LAB KIRTLAND AFB NMSPACE VEHICLES DIRECTORATE
|
 | The primary payload on a small-satellite, the Air Force Research Laboratory's MightySat II.1, is a spatially modulated Fourier Transform Hyperspectral Imager (FTHSI) designed for terrain classification. The heart of this instrument is a solid block Sagnac interferometer with 85cm-1 spectral resolution over the 475nm to 1050nm wavelength range and 30m spatial resolution. Coupled with this hyperspectral imager is a Quad-C40 card, used for on-orbit processing. The satellite was launched on ... |
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| Multi-Octave Spectral Imaging in the Infrared - A Newly Emerging Approach |
2002 |
8 pages |
| Authors:
Paul D. LeVan; Diana Maestas; AIR FORCE RESEARCH LAB KIRTLAND AFB NMSPACE VEHICLES DIRECTORATE
|
| A new approach is described for obtaining spectral imagery over a broad range of infrared wavelengths, with high efficiency, and with a single grating element and focal plane array. The approach represents a simplification and mass reduction over the traditional approach involving multiple focal plane arrays, dispersing elements, and optical beamsplitters. The new approach has significant advantages for space-based hyperspectral imagers operating in the infrared over a broad range of ... |
|
| SpaceCAPS: Automated Mission Planning for the TechSat 21 Formation-Flying Cluster Experiment |
2002 |
5 pages |
| Authors:
John L. Mohammed; STOTTLER HENKE ASSOCIATES INC SAN MATEO CA
|
| This paper describes a project concerned with the development of a mission planning system to provide automated planning assistance for the Air Force TechSat 21 formation-flying satellite cluster experiment: Spacecraft Cluster Automatic Planner/Scheduler (SpaceCAPS). The project's focus is on planning and scheduling for payload management, but the system serves as a central planning system for planning and scheduling of all spacecraft functions. The paper describes some of the planning and ... |
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| The Objective Force Battle Staff? |
2002 |
59 pages |
| Authors:
James R. Hevel; ARMY COMMAND AND GENERAL STAFF COLL FORT LEAVENWORTH KS SCHOOL OF ADVANCED MILITARY STUDIES
|
| The Objective Force Unit of Action operates in a significantly different command environment. It is called 'execution-centric command' and it relies on information superiority. The commander uses superior situational understanding and the 'quality of firsts' to see first, understand first, and act first upon the enemy. The commander uses a 'tactical infosphere' or networked information management system to gain and maintain information superiority. He uses sensor systems within his battlespace ... |
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| LEO Satellite Services - Can a Startup Provider Survive? |
14 DEC 2001 |
25 pages |
| Authors:
Christopher G. Schlak; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH
|
| In 1958, President Dwight D. Eisenhower became the first person to send a voice transmission over an orbiting satellite when he sent his Christmas message over the SCORE satellite. By 1962, Telstar I was providing real-time video between the United States and France during its short 20-minute window of operation. The telecommunications industry would never be the same once space based telecommunications became a reality. Voice telephony came first, then ... |
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| Study of Relativistic Electron Beam Propagation in the Atmosphere- Ionosphere-Magnetosphere |
12 DEC 2001 |
66 pages |
| Authors:
Brian E. Gilchrist; George Khazanov; Linda Krause; Torsten Neubert; MICHIGAN UNIV ANN ARBOR
|
| Models for propagation physics and associated ionospheric/atmospheric modification have been developed for the space-based injection of relativistic (E(-) 1-100 MeV) electron beams. Initial evaluations of beam propagation effects in the ionosphere, magnetosphere, and atmosphere have been conducted. The overall goal of this work was to develop computational tools and use them to better assess relavistic beam launch, propagation, and interaction with the space environment and atmosphere. Computational tools developed and ... |
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| Practical Problems Involving Phase Noise Measurements |
01-Nov-2001 |
11 pages |
| Authors:
Warren F Walls; FEMTOSECOND SYSTEMS INC WHEAT RIDGE CO
|
| RADAR systems, secure communications, space-based applications, precision navigation, and computer timing applications are among some of the increasingly large number of modern electronic systems with phase noise performance requirements. Making these measurements is not always as easy as using the ubiquitous multi-meter. The topology or measurement configuration can significantly impact the speed, level of accuracy, and noise floor of the measurement itself. Careful attention must be paid to many different ... |
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| Analysis of the Small Sample Size Performance of Fast Fully Adaptve STAP Techniques for MTI Radar |
OCT 2001 |
|
| Authors:
Christoph H. Gierull; DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)
|
| In ground surveillance from an airborne or space-based radar it is desirable to be able to detect small moving targets, such as tanks or wheeled vehicles, within severe ground clutter. For operational moving target indication (MTI) systems the clutter filter coefficients have to be updated frequently due to rapidly changing interference environment. This report examines the small sample size performance of different fast fully adaptive space-time processors (STAP) and compares ... |
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| High Altitude Long Endurance (HALE) Platforms for Tactical Wireless Communications and Sensor Use in Military Operations |
SEP 2001 |
134 pages |
| Authors:
Charles R. Ferguson; Douglas A. Harbold; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| U,S military forces are transitioning to network centric operations, as described in Joint Vision 2010 and Joint Vision 2020. Warfighting elements will function as individual nodes in a global information grid with an end-to- end infrastructure that provides information on demand to warfighters, policy makers, and support personnel. This transition will place additional demands on wireless communications and Intelligence, Surveillance, and Reconnaissance (ISR) systems. However, current and planned space-based communications ... |
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| TopSat Testing Different Ideas for SBS in ISTAR Laboratory |
SEP 2001 |
|
| Authors:
Paul Brooks; QINETIQ LTD LONDON (UNITED KINGDOM)
|
|
| Coalescence Effects on Neutron Production in High Energy Nucleus-Nucleus Collisions |
AUG 2001 |
58 pages |
| Authors:
Gerald S. Braley; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH
|
| The collision of atomic nuclei traveling at or near relativistic speeds with stationary target nuclei produces a shower of nuclear fragments in all directions and at a wide range of energies, including energies significantly higher than those of the original projectile. Sources of these high-energy projectile nuclei include space radiation of cosmic or solar origin, accelerators, and radiation beams used in medical treatment. Of particular concern is the production of ... |
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| Ionospheric Scintillation Effects on a Space-Based, Foliage Penetration, Ground Moving Target Indication Radar |
AUG 2001 |
|
| Authors:
M. T. Tuley; T. C. Miller; R. J. Sullivan; INSTITUTE FOR DEFENSE ANALYSES ALEXANDRIA VA
|
| This report provides the results of a brief study of the possible effects of ionospheric scintillation on a space-based, foliage-penetration (FOPEN), ground moving-target indication (GMTI) radar operating in the ultrahigh-frequency (UHF) band. The results of publicly available data and analyses are applied to a specific strawman FOPEN space-based radar (SBR) system operating from low-Earth orbit. Performance degradations due to ionospheric scintillation and a combination of ionospheric scintillation and internal clutter ... |
|
| Highly Damped Lightweight Wavy Composite |
JUL 2001 |
147 pages |
| Authors:
William F. Pratt; Matthew S. Allen; Troy J. Skousen; PATTERNED FIBER COMPOSITES INC LINDON UT
|
| Wavy composite had its origin in the Star Wars programs of the late 1980s as part of a space-based laser anti-missile program and is a new material that exhibits both high stiffness and damping when combined with capable viscoelastic materials. If high modulus fibers are used in the production of the wavy composite, it is possible to attain the stiffness of steel, thousands of times the damping, with the lightweight ... |
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| Irradiance Calibration of Space-Based Infrared Sensors |
JUL 2001 |
47 pages |
| Authors:
Russell Walker; Martin Cohen; VANGUARD RESEARCH INC SCOTTS VALLEY CA
|
| The purpose of this work is to develop a basis for irradiance calibration of spacebased infrared sensors. It is an extension of previous work that fully defines the context of the calibration, and the concepts of spectral composites and templates. We discuss four areas of work carried out during the past year; our accomplishments and failures; and our plans for the future. The four areas are: 1) Production and release ... |
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| The Limits of Spacepower |
18 MAY 2001 |
25 pages |
| Authors:
Michael T. McNeely; NAVAL WAR COLL NEWPORT RI JOINT MILITARY OPERATIONS DEPT
|
| The United States military has become highly dependent on space-based assets in the critical areas of communications, intelligence, surveillance and reconnaissance (ISR), and precision navigation. This dependence, coupled with the lack of redundant capabilities, leaves the U.S. particularly vulnerable in these areas, as we risk having this capability neutralized or destroyed. The CINC or JTF commander's staff must be knowledgeable of these vulnerabilities when planning a campaign or major operation, ... |
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| A Space Blockade; Flexible and Responsive Denial of Adversary Use of Space |
03 APR 2001 |
10 pages |
| Authors:
R. A. Fabian; T. Riebe; SPACE COMMAND PETERSON AFB CO
|
| From the earliest days of space exploration, space has been used for military purposes. This use has ranged from imagery for reconnaissance, such as the recently declassified Project Corona, weather, and terrain mapping to long range communications and the more recent innovations from precision navigation. Over the past few decades, space has proven itself a superior force multiplier. America's extensive investments in military space systems paid off demonstrably in OPERATION ... |
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| A Space Blockade Flexible and Responsive Denial of Adversary Use of Space |
03 APR 2001 |
31 pages |
| Authors:
Robb Fabian; SPACE COMMAND PETERSON AFB CO
|
| These briefing slides deal with the military value of space, military applications in space environments, global communications, space threat, the space blockade process and conclusion to the problem. |
|
| Operational Implications of Sovereignty and Freedom of Navigation in Space |
APR 2001 |
51 pages |
| Authors:
Philip T. Wold; AIR COMMAND AND STAFF COLL MAXWELL AFB AL
|
| What is the operational impact and significance upon U,S Air Force operations in applying the terrestrial concepts of sovereignty and freedom of navigation to U,S national interests and assets in space? Can these concepts provide guidance for the formulation of Air Force doctrine regarding military operations in space? The operational impact and significance are examined through a systematic approach from the perspective of a present-day fictional Chinese staff officer in ... |
|
| The Rise of Surveillance |
APR 2001 |
67 pages |
| Authors:
James O. Norman; AIR UNIV MAXWELL AFB AL
|
| A number of recent congressional commissions have reviewed the Intelligence Community's agencies involved with space-based intelligence, surveillance and reconnaissance (ISR). In the past, recommendations for some form of merger involving the National Security Agency (NSA), National Reconnaissance Office (NRO) and the National Imagery and Mapping Agency (NIMA) have been proposed as a way to potentially improve space-based ISR performance. The Joint Staff has also recently asked whether this option should ... |
|
| Improving Space Surveillance with Space-Based Visible Sensor |
APR 2001 |
|
| Authors:
Jayant Sharma; Andrew Wiseman; George Zollinger; MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
|
| The Midcourse Space Experiment satellite was launched in 1996. A principal sensor on board the satellite is the Space-Based Visible (SBV) sensor, a visible-band electro-optical camera designed at Lincoln Laboratory. The program has just completed three years of Contributing Sensor operations under the Advanced Concept Technology Demonstration (ACTD) program. The SBV has transitioned to an operational sensor under Space Command sponsorship. This paper describes recent modifications, made under the ACTD ... |
|
| Space-Time Adaptive FIR Filtering with Staggered PRI |
14 MAR 2001 |
|
| Authors:
R. Klemm; RESEARCH ESTABLISHMENT FOR APPLIED SCIENCES WACHTBERG- WERTHHOVEN (GERMANY)
|
| Space-time least squares far infrared radiation (FIR) filters have shown excellent clutter rejection performance at extremely low computational loads, allowing ground moving target indication (GMTI) to be carried out in real-time. Staggering the pulse repetition interval (PRI) is an appropriate way of avoiding Doppler ambiguities and blind velocities. Fully adaptive space-time processors can cope well with staggered echo data. FIR filtering techniques are based on constant PRI and, therefore, will ... |
|
| Simulation and Analysis of Adaptive Interference Suppression for Bistatic Surveillance Radars |
13 MAR 2001 |
|
| Authors:
Fred Pearson; Geordi Borsari; MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
|
| The standard training approach for Space Time Adaptive Processing (STAP) works poorly, especially in cases of non-stationary interference. Bistatic clutter interference exhibits a strongly range-dependent structure. The Derivative-based Updating (DBU) algorithm has an advantage over other algorithms in that no knowledge of transmitter position and velocity are required. The disadvantages of DBU are that it doubles the STAP degrees of freedom, doubles the number of training samples required, and increases ... |
|
| Using Commercial Off the Shelf (COTS) Digital Signal Processors (DSP) for Reliable Space Based Digital Signal Processing |
MAR 2001 |
116 pages |
| Authors:
Matthew J. Wukitch; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| A radiation tolerant testbed was designed using a Commercial-Off-the- Self Digital Signal Processor and presented to prove the concept of Triple Modular Redundant (TMR) processors in order to make a COTS DSP radiation tolerant design. The system was designed to handle the effects of radiation associated with Single Event Upset only. Two of the industry's leading programmable 32-bit floating-point digital signal processors were reviewed for this thesis, Analog Devices ADSP-21060 ... |
|
| Microdot, a 4-Bit Synchronous Microcontroller for Space Applications |
MAR 2001 |
172 pages |
| Authors:
Kirby M. Watson; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Satellites have limited power budgets due to the amount of power collected by the satellite's solar panels. The goal is to have a wide range of functionality, while running off a limited power source. Large microprocessors use large amounts of power to report back temperature and chemical sensor data to ground stations. By using small micro controllers to perform the data collection and minimizing the usage of the larger microprocessors, ... |
|
| Evaluation of the Strategy-Structure Fit of Space and Missile Systems Center Detachment 11 |
MAR 2001 |
81 pages |
| Authors:
Tommy M. Gates; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Activated June 1,1998, Space and Missile Systems Center Detachment 11, located in Colorado Springs, integrates system support management for the Satellite Launch Control System (SLCS), MlLSTAR, the Defense Meteorological Support Program (DMSP), the Space Based Infrared System (SBlRSl, and the Global Positioning System (GPS). The Detachment performs operational software maintenance, satellite systems engineering, space testing and evaluation, and technology master planning. Contemporary management theory asserts that the appropriate match of ... |
|
| Investigation of Gravity Waves VIA the Rotational Temperature of Hydroxyl Nightglow |
MAR 2001 |
80 pages |
| Authors:
Erin C. Willingham; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH SCHOOL OF ENGINEERING
|
| Measurement of the vibration and rotation bands of mesospheric hydroxyl radicals (OH) has been conducted during the past two decades using ground-based and space-based interferometers to take temperature and wind measurements from 70-100km in altitude. Gravity waves that pass through the mesosphere can be measured by determining the variance over time of the rotational temperature of the OH emissions. Several attempts were made to take spectrum measurements of the nightglow ... |
|
| Space Control as a Critical Mission Area: Leveraging Space-Based Assets for the Joint Commander |
05 FEB 2001 |
20 pages |
| Authors:
John H. Lamb; NAVAL WAR COLL NEWPORT RI JOINT MILITARY OPERATIONS DEPT
|
| As displayed over the last ten years of conflict, from Desert Storm to Kosovo, the military is more dependent upon space-based assets than ever before. Yet these assets, which perform communications, navigation, environmental, surveillance, and missile defense functions, are vulnerable to attack. While Space Control has traditionally remained a strategic function, it is clear that this mission area is important at the operational level. The Joint Force Commander's (JFC) staff ... |
|
| Strategic High Altitude Infrared Backgrounds |
15 JAN 2001 |
8 pages |
| Authors:
W. O. Gallery; H. E. Snell; J. -l. Moncet; ATMOSPHERIC AND ENVIRONMENTAL RESEARCH INC LEXINGTON MA
|
| The purpose of this contract was to "...provide models and codes to predict infrared background phenomenon to be encountered by advanced space based systems operating in natural and disturbed backgrounds." The three specific tasks of the contact were: (1) analysis data from the Mid Course Space Experiment (MSX), (2) development of advanced radiance inversion techniques, and (3) enhancement of the radiative transfer program FASCODE Environment (FASE). Under (1), AER developed ... |
|
| Mission Planning for a Formation-Flying Satellite Cluster |
2001 |
6 pages |
| Authors:
John L. Mohammed; STOTTLER HENKE ASSOCIATES INC SAN MATEO CA
|
| The formation-flying satellite cluster is a new paradigm for space-based surveillance and remote sensing. In this paradigm, several small satellites fly in close formation and coordinate their activities so that through sparse-array interferometric and synthetic aperture techniques the cluster can effectively operate as though it were a much larger monolithic satellite. Management of such clusters will require increased automation for planning and scheduling, both in pre-flight mission planning and during ... |
|
| Space-Based Observation Technology |
01 OCT 2000 |
|
| Authors:
NATO RESEARCH AND TECHNOLOGY ORGANIZATION NEUILLY-SUR-SEINE (FRANCE)
|
| This volume contains the unclassified papers presented at the Sensors and Electronics Technology Panel symposium held on the Island of Samos, Greece on 16, 17 and 18 October 2000. All aspects of space-based observation including the satellite, support systems, sensors, data handling etc. Topics covered included: Operational requirements/trade-offs, Spaceborne radar technology, On- board/real-time processing, Specific space systems issues,Special features of optronics systems. |
|
| Naval EarthMap Observer (NEMO) Hyperspectral Remote Sensing Program |
01 OCT 2000 |
11 pages |
| Authors:
Thomas Wilson; Robert Felt; Rebecca Baugh; PRAXIS INC ALEXANDRIA VA
|
| The NEMO hyperspectral remote sensing program will provide unclassified, space-based hyperspectral passive imagery at moderate resolution that offers substantial potential for direct use by Naval forces and the Civil Sector. |
|
| The RF PRISM Concept for Pushing Forward the Antenna Size Barrier in Space Based Radar |
01 OCT 2000 |
7 pages |
| Authors:
Jean P. Aguttes; CENTRE NATIONAL D'ETUDES SPATIALES TOULOUSE (FRANCE)
|
| RF PRISM is a new space antenna concept where an array is fed through a mesh of points on the antenna back face with RE signals transmitted (or received) by another satellite called illuminator and usually offset by 100 Km on the same orbit. Basically the PRISM deviates, amplifies, and beam forms the signals passing through it and travelling between the illuminator and the earth. Providing that the speed vector ... |
|
| SPACE TRACKS: A Naval Space Command Bulletin on Naval Space Issues and Initiatives. October 2000 |
OCT 2000 |
24 pages |
| Authors:
NAVAL SPACE COMMAND DAHLGREN VA
|
| SPACE TRACKS is published four times s yesr in January. April, July and October as an official, authorized publication of Naval Space Command. Its purpose is to discuss naval space issues and initiatives, and promote a broader awareness of space support available to the naval warfighter. Information contained in Space Tracks does not necessarily reflect the official views of the U.S. Government, the Department of Defense, ... |
|
| Space-Based Applications of Far-Infrared Systems |
29 SEP 2000 |
4 pages |
| Authors:
Michael C. Gaidis; JET PROPULSION LAB PASADENA CA
|
| This paper discusses the applications of space-based far-infrared/terahertz sensors and systems. It also covers the needs and desires of scientists, discusses what has been done to date, and what is planned for the future. |
|
| A Study of the Feasibility and Applicability of Shape Controlled Space Based Inflatable Membrane Structures |
SEP 2000 |
197 pages |
| Authors:
Craig M. Whittinghill; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Inflatable structures used for space applications offer mass, volume, and cost savings to spacecraft programs, allowing larger space structures to be built. For certain space applications, there are advantages to using large structures. For example, antennas achieve higher gains when they are increased in size. Higher gains equate to higher data throughputs. Therefore, inflatable structures offer improvements in performance to certain types of spacecraft components. ... |
|
| Growing the Space Industrial Base: Policy Pitfalls and Prospects |
SEP 2000 |
36 pages |
| Authors:
Robert L. Butterworth; AIR WAR COLL MAXWELL AFB AL
|
| For more than 50 years, the United States used the inventiveness and productivity of its economy to overmaster Soviet advantages in numbers and geography. This "asymmetric" strategy-arguably the most sustained and extensive in history-proved triply successful. It brought superior defense and intelligence capabilities, many of which might remain unchallenged for years to come. It brought economic advancement, as national security research and engineering found ... |
|
| Dynamics Model for a Multi-Tethered Space-Based Interferometer |
07 AUG 2000 |
19 pages |
| Authors:
Stephen S. Gates; NAVAL RESEARCH LAB WASHINGTON DC
|
| A mathematical dynamics model is established for a space-based interferometer concept comprised of multiple collector elements connected to a common central body by tethers of variable length. The system as a whole is to rotate in a coordinated fashion while the collectors simultaneously execute linear extension and retraction motions. The system is taken to consist of a single rigid body and N point mass collector ... |
|
| National Missile Defense (NMD) Deployment. Final Environmental Impact Statement, Volume 1 of 4: Chapters 1-3 |
JUL 2000 |
605 pages |
| Authors:
ARMY SPACE AND MISSILE DEFENSE COMMAND HUNTSVILLE AL
|
| This EIS was prepared in accordance with the National Environmental Policy Act (NEPA), to analyze the potential environmental consequences of the No-action Alternative and Proposed Action. The No-action Alternative is not to deploy the NMD system. If the deployment decision made is not to deploy, the NMD program would use the time to enhance the existing technologies of the various system elements. The Proposed Action would be to deploy the ... |
|
| Implementation of a Fault Tolerant Computing Testbed: A Tool for the Analysis of Hardware and Software Fault Handling Techniques |
JUN 2000 |
185 pages |
| Authors:
David C. Summers; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| With spacecraft designs placing more emphasis on reduced cost, faster design time, and higher performance, it is easy to understand why more commercial-off-the-shelf (COTS) devices are being used in space based applications. The COTS devices offer spacecraft designers shorter design-to- orbit times, lower system costs, orders of magnitude better performance, and a much better software availability than their radiation hardened (radhard) counterparts. The major ... |
|
| Application of Fault-Tolerant Computing For Spacecraft Using Commercial-Off-The-Shelf Microprocessors |
JUN 2000 |
167 pages |
| Authors:
Susan E. Groening; Kimberly Davenport-Whitehouse; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Low availability, high cost, and poor performance of radiation hardened (rad-hard) equipment has driven the market to rely on commercial-off- the-shelf (COTS) equipment for the computing needs of today's spacecraft. This thesis describes the tailoring of a COTS embedded real-time operating system and design of a human-computer interface (HCI) for a triple modular redundant (TMR) fault-tolerant microprocessor for use in space-based applications. Once disadvantage of ... |
|
| Electron-Emissive Materials, Vacuum Microelectronics and Flat-Panel Displays; Symposium Held in San Francisco, California on April 25-27, 2000 |
27 APR 2000 |
|
| Authors:
Kevin L. Jensen; Robert J. Nemanich; Paul Holloway; Troy Trottier; William Mackie; MATERIALS RESEARCH SOCIETY WARRENDALE PA
|
|
| Integrating Space-Based Fires into the Joint Force After Next |
APR 2000 |
41 pages |
| Authors:
Timothy J. Lea; AIR COMMAND AND STAFF COLL MAXWELL AFB AL
|
| How should future commanders integrate space-based fires into their combat operations? Space-based fires represent a significant departure from traditional force structure. They present such an interesting challenge because of their global nature and their out-of-theater planning and execution processes. As a result, fires from space will require significant integration from the operational to tactical level. Unfortunately, current doctrine on commanding, planning and executing is insufficient to accommodate space-based fires. This ... |
|
| Tactical Payloads for UAVs |
APR 2000 |
|
| Authors:
Amy H. Carruso; David L. Maddox; PROGRAM EXECUTIVE OFFICER TACTICAL SYSTEMS PROGRAM OFFICE PATUXENT RIVER MD
|
| The Tactical Systems Program Office of tile Program Executive Officer Cruise Missiles and Unmanned Aerial Vehicles PEO(CU) is developing and refining Payload Concepts of Operation (CONOPS) based on demonstrated capabilities new technology and emerging operator needs. The Tactical Systems Program Office continues to expand technical and operational capabilities for increased Unmanned Aerial Vehicle (UAV) applications. To support future military operations the Tactical Systems Program Office foresees UAVs as a complement ... |
|
| An Evolving Doctrine: Force Application from Space |
22 MAR 2000 |
55 pages |
| Authors:
Michael J. Moran; AIR COMMAND AND STAFF COLL MAXWELL AFB AL
|
| The Air Force's complete and Joint Staffs draft doctrine for force application from space is currently limited to non-space force used against terrestrial space resources. The doctrinal discussion of space force application is constrained by current national policy. While the other space operation areas of space support, force enhancement, and space control are maturing, force application from space has not progressed commensurately. Only with force application from space can we ... |
|
| Spatial-Spectral Sensor Techniques for Detection of Atmospheric Turbulence |
03 MAR 2000 |
71 pages |
| Authors:
Robert D. Sears; Lyle Broadfoot; VANGUARD RESEARCH INC FAIRFAX VA
|
| This report addresses the problem of utilizing spatial-hyperspectral imaging capabilities of spaceborne sensors to detect and characterize regions of atmospheric turbulence and cirrus cloud clutter which may impact employment and/ or performance of space based laser and airborne high energy laser weapons systems. Our concept for worldwide detection, characterization and mapping of atmospheric turbulence and cirrus clouds involves use of satellite-borne (and possibly airborne) spectral and ... |
|
| Optical Metrology of Adaptive Membrane Mirrors |
MAR 2000 |
155 pages |
| Authors:
John W. Wagner; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH SCHOOL OF ENGINEERING
|
| Current space-based imaging platforms are significantly constrained in both size and weight by the launch vehicle. Increased payload size and weight results in increased cost and a decrease in launch responsiveness. The USAF scientific Advisory Board (SAB) identified "Large lightweight structures for optics and antennas" as a revolutionary primary technology to be developed for the Air Force of the 21st Century. A membrane primary mirror in ... |
|
| The Effect of Companions on the SIM Reference Frame |
MAR 2000 |
7 pages |
| Authors:
Christopher S. Jacobs; Slava G. Turyshev; JET PROPULSION LAB PASADENA CA
|
| The Space Interferometry Mission (SIM) is a 10-m Michelson space-based optical interferometer designed for precision astrometry (4 microarcseconds, 3 microarcseconds/year) with better accuracy than before over a narrow field of view. One of the primary objectives of the SIM instrument is to determine accurately the directions to a grid of stars, together with their proper motions and parallax, improving a priori knowledge by nearly three orders of magnitude over Hipparcos ... |
|
| The Future of Space Astrometry |
MAR 2000 |
7 pages |
| Authors:
Kenneth J. Johnston; NAVAL OBSERVATORY WASHINGTON DC
|
| The future of space-based astrometric missions appears to be very promising. Three missions were described at IAU Colloquium 180. These are the Full-sky Astrometric Mapping Explorer (FAME), the Space Interferometry Mission (SIM) and the Global Astrometric Interferometer for Astrophysics (GAIA) missions. These missions will substantially improve the accuracy of global astrometric measurements made by the Hipparcos space mission by factors of 20 to 250. A brief summary of these projects ... |
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Reports by Keyword(s)
SPACE BASED
