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Reports by Keyword(s)SPACE BASED
Total Results: 495 Pages: Previous 1 2 3 4 [5] 6 7 8 9 10 Next Results per page:
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Achieving Affordable Operational Requirements on the Space Based Infrared System (SBIRS) Program: A Model for Warfighter and Acquisition Success? MAR 1997 79 pages
Authors:  Jay A. Moody; AIR COMMAND AND STAFF COLL MAXWELL AFB AL
The full text of this report is available for sale.Well defined, warfighter customer generated operational requirements are the most significant determinants of successful military systems. If the warfighter customers and the acquirers do a good job early of defining the operational requirements, the warfighters will have a much higher likelihood of obtaining a capable system that meets their needs in less time and at less cost. The Space Based Infrared System (SBIRS) Program, a complex system of systems satellite ...


Alternative Gate Designs for Improved Radiation Hardness in Bulk CMOS integrated Circuits MAR 97 248 pages
Authors:  Sidney S. Noe; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
The full text of this report is available for sale.In the last 30 years, the world has become increasingly dependent on space-based systems. These systems require varying degrees of radiation tolerance to perform their missions. Current radiation hardening processes for integrated circuits are expensive and consume significant layout area, increase power consumption, and decrease the frequency of operation. Furthermore, it is becoming more difficult to find fabricators for radiation-hardened electronic devices. In this thesis, two new transistor designs using ...


National Missile Defense: Risk and Funding Implications for the Space- Based Infrared Low Component FEB 97 32 pages
Authors:  GENERAL ACCOUNTING OFFICE WASHINGTON DC NATIONAL SECURITY AND INTERNATIONAL A FFAIRS DIV
The full text of this report is available for sale.In 1995, the Department of Defense (DOD) made plans for the space and missile tracking system-the low satellite component of the Space-Based Infrared System (SBIRs)-to be deployed in fiscal year 2006. In February 1996, the Congress directed the Secretary of Defense to restructure the SBIRs program and deploy the first space and missile tracking system (hereafter referred to as SBIRs-low) satellite in fiscal year 2002. The Congress also appropriated $264 ...


Iceberg Detection and Tracking Using High Frequency Surface Wave Radar JAN 97
Authors:  Hing C. Chan; DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)
The full text of this report is not available and therefore is not for sale. This information is provided for reference purposes only.An iceberg surveillance experiment involving multiple sensors was carried out in a one-week period between April and May 1995. Several Canadian and U.S. Government agencies and members of industry participated. The Canadian Department of National Defence (DND), in collaboration with industry, provided high frequency surface ave radar (HFSWR) sensors, while the Canadian and U.S. Coast Guards provided surface and aerial ground tuth data. The experiment coincided with the over-flight of ...


Overview Environmental Assessment for the Space Based Infrared System (SBIRS) DEC 1996 121 pages
Authors:  Anthony C. Davis; Donald L. Koehler; J. D. Latimer; Craig McColloch; David S. Reasons; PARSONS ENGINEERING SCIENCE INC AUSTIN TX
The full text of this report is available for sale.The United States needs to procure a consolidated, cost-effective, flexible system that will meet the Nation's infrared space surveillance needs through the next two to three decades. The system must fulfill four broad mission areas: missile warning, missile defense, technical intelligence, and battlespace characterization. This overview Environmental Assessment (EA) identifies, describes, and evaluates the potential environmental impacts that could result from implementing the Space Based Infrared System (SBIRS) High Component, ...


Electric Propulsion For Spacecraft Applications DEC 96
Authors:  Jeff D. Filliben; CHEMICAL PROPULSION INFORMATION AGENCY COLUMBIA MD
The full text of this report is not available and therefore is not for sale. This information is provided for reference purposes only.The purpose of this review and an accompanying review, CPTR 96-65 Electric Thruster Systems, is to present an overview of the current field of electric propulsion technology. This review focuses on operational issues associated with the use of electric propulsion systems and the current and proposed mission applications. More than 200 electric propulsion devices have been used on about 100 spacecraft over the last 32 years and a significant increase ...


Lessons Learned from the First Capability Increment of the National Missile Defense (NMD) Battle Management/Command, Control, and Communications (BMC3) Software SEP 96 11 pages
Authors:  Jeff Blank; Mary L. Urban; Charles K. Wilkinson; ELECTRONIC SYSTEMS CENTER HANSCOM AFB MA
The full text of this report is available for sale.A demonstrator system for the Battle Management, Command, Control, and Communications element of the National Missile Defense system is being built in seven increments. This paper reports lessons learned from development of the first increment. Four lessons are discussed. First, a relatively informal requirements baseline, generated and iterated by the contractor, was found to meet the needs of the program. Second, benefits from use of object oriented methods and Ada ...


Cueing Performance Estimation Using Space Based Observations During Boost Phase SEP 96 12 pages
Authors:  Albert J. Perrella Jr.; William W. Kuhn; MITRE CORP MCLEAN VA
The full text of this report is available for sale.This paper addresses error statistics for estimates of ballistic missile trajectory parameters that are computed from observations by space-based infrared (IR) sensors during the boost phase. These error statistics are useful for system level planning and performance estimation of such quantities as cueing accuracy vs time, sensitivity to satellite parameters, or impact point predictions. These statistics assume correct ballistic missile typing, which provides the basis for most of the inputs ...


Counterair: The Cutting Edge AUG 1996 78 pages
Authors:  Rick W. Lester; Steven M. Jacobsmeyer; Michael M. Miller; Jim C. Bigham Jr; Stephen M. Tanous; AIR WAR COLL MAXWELL AFB AL
The full text of this report is available for sale.This paper examines the counterair mission in 2025; what it is, what the threats are, and how we counter them. In the broadest sense, the counterair mission will not change in the next 30 years. The basic premise of air superiority, neutralizing or destroying an adversary's ability to control the skies, will remain intact. This paper examines the counterair mission by first performing an analysis of three different trajectories: (1) ...


The Employment of the Single Channel Tactical Satellite System at Corps and Division Level 07 JUN 96 72 pages
Authors:  John B. Hildebrand; ARMY COMMAND AND GENERAL STAFF COLL FORT LEAVENWORTH KS
The full text of this report is available for sale.This study investigates the current and near-term future single channel satellite communications architecture in support of corps and division operations. It identifies considerations that corps and division commanders have when employing space-based communications systems and suggests several possible alternatives to the single channel tactical satellite system. As an attempt to keep pace with the rapid movement on the modern battlefield, the Army has developed the Warfighter Net. The primary mission ...


Magnetospheric Atmospheric X-ray Imaging Experiment (MAXIE) 06 JUN 96 82 pages
Authors:  W. L. Imhof; H. D. Voss; J. Mobilia; D. W. Datlowe; V. L. Chinn; LOCKHEED MISSILES AND SPACE CO INC PALO ALTO CA AEROSPACE SCIENCES LAB
The full text of this report is available for sale.This report summarizes the activities sponsored by the Office of Naval Research for the Magnetospheric Atmospheric X-ray Imaging Experiment (MAXIE). The MAXIE instrument was developed as a joint activity of Lockheed, The Aerospace Corporation, and the University of Bergen, Norway. Lockheed was responsible for the overall management of the program, interfacing with the appropriate government agencies, the overall electrical and mechanical design, flight software, environmental testing, spacecraft integration activities, on ...


Improving Theater Ballistic Missile Defense at the Operational Level of War 20 MAY 96 29 pages
Authors:  Steven C. Schlientz; NAVAL WAR COLL NEWPORT RI
The full text of this report is available for sale.The proliferation of theater ballistic missiles (TBMs) and weapons of mass destruction (WMD) throughout developing nations is so widespread that over 20 states may have an operational capability to deliver WMD using TBMs by the turn of the century. As was amply demonstrated during the Gulf War, even cheap, unsophisticated, and militarily insignificant TBMs such as the Al Hussein (modified Scud-B) can pose a psychological impact so severe that a ...


It Still Takes an Agent....AFOSI Techno-Tools for 2025 01 APR 96 42 pages
Authors:  Robert W. Broeking; AIR WAR COLL MAXWELL AFB AL
The full text of this report is available for sale.Future technologies will change the way law enforcement and investigations are conducted by AFOSI. By the year 2025, the three main revelations in this area could be the computer, the use of space-based assets for remote sensing, and the development of non-lethal weapons for use by AFOSI Special Agents. This paper explores the use of science and technology through the use of a fictional essay, a discussion of the new ...


Environmental Assessment for the Space Based Infrared System (SBIRS) mission Control Station for Defense Support Program Consolidation APR 1996 114 pages
Authors:  Anthony C. Davis; Josephine Jarrell; Donald L. Koehler; J. D. Latimer; Craig McColloch; PARSONS ENGINEERING SCIENCE INC AUSTIN TX
The full text of this report is available for sale.A number of different missile warning, defense, and battlespace characterization systems are currently in use by the Department of Defense (DoD) and other national users. These systems include the Defense Support Program (DSP), Large Processing Station (LPS), Attack and Launch Early Reporting to Theater (ALERT), Tactical Detection and Reporting (TACDAR), and Joint Tactical Ground Station (JTAGS). The DoD proposes to integrate and ultimately replace these systems with the Space Based ...


Development of Foreign High-Powered Microwave Weapons and Prospects of Future Applications in Space-Based Target Defense and Air Defense 08 MAR 96 34 pages
Authors:  Hui Li; Zibin Wang; NATIONAL AIR INTELLIGENCE CENTER WRIGHT-PATTERSON AFB OH
The full text of this report is available for sale.This paper outlines the development of foreign high-power microwave weapons and their technologies and, by introducing high-power microwave sources and effects, analyzes the prospects of their applications in space-based target defense and air defense. ANNOTATION: Development of Foreign High-Powered Microwave Weapons and Prospects of Future Applications in Space-Based Target Defense and Air Defense. -- Translation.


Exploiting the Utility of Space-Based Environmental Surveillance Systems at the Operational Level of War 07 MAR 96 22 pages
Authors:  John Barron; NAVAL WAR COLL NEWPORT RI
The full text of this report is available for sale.The ability to assess the physical environment of the battlefield and understand its implications on the outcome of military operations is an integral part of the operational commander's planning and decision making processes. Today, accurate environmental intelligence, particularly in the areas of weather observation and terrain characterization, is almost exclusively accomplished through the use of space-based surveillance systems. The analysis of near real- time, satellite data in the form of ...


International Space Station Traffic Modeling and Simulation MAR 96 151 pages
Authors:  Jillene B. Rylaarsdam; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
The full text of this report is available for sale.In an effort to provide NASA with an alternative perspective and some insights to the operational planning of the International Space Station (ISS), this research developed a simulation environment for the ISS and devised a method to evaluate various altitude strategies. The simulation environment allowed us to incorporate the natural random behaviors which affect the lifetime of objects in low earth orbit. We created prototype models of the operational planning ...


GPS Capabilities for the Warfighter 12 FEB 96 31 pages
Authors:  Jon C. Dale; NAVAL WAR COLL NEWPORT RI
The full text of this report is available for sale.The Global Positioning System (GPS) is a space-based worldwide navigation system that has a wide range of military and civil applications. The vastly increased situational awareness and accurate positioning capabilities provided by this system act as a force multipliers for today's smaller military. Increased situational awareness, as well as navigation and reconnaissance capabilities will support decisions regarding maneuver and application of forces. GPS will be used to guide weapons and ...


Functional Cost-Estimating Relationships for Spacecraft FEB 96
Authors:  Neang I. Om; James K. Roth; Melissa L. Corso; Jennifer A. Titus; INSTITUTE FOR DEFENSE ANALYSES ALEXANDRIA VA
The full text of this report is not available and therefore is not for sale. This information is provided for reference purposes only.The costs to acquire space-based missile defense systems are often reviewed by DoD. Issues are raised concerning the cost models used to generate cost estimates for space-based missile defense systems. The Ballistic Missile Defense Organization questions the use of traditional weight-based spacecraft cost models developed by the Air Force Space and Missile Systems Center. The concern is motivated by changes in satellite designs of future systems where smaller but more ...


60 K Phase Change Material Device JAN 1996 57 pages
Authors:  David C. Bugby; SWALES AND ASSOCIATES INC BELTSVILLE MD
The full text of this report is available for sale.The objective of this Phase I SBIR program was to demonstrate the feasibility of phase change material device (PCMD) technology at 60 K. The application for this technology will be to optimize the improve the reliability, and reduce the cost of space-based infrared (IR) sensor systems for the DoD. In Phase I, an apparatus was designed and constructed for testing/characterizing PCMs and PCMDs, a one-tenth scale prototype PCMD was designed, ...


Space-Time Adative Matched-Field Processing (STAMP) 1996 6 pages
Authors:  Yung P. Lee; SCIENCE APPLICATIONS INTERNATIONAL CORPMCLEAN VA
The full text of this report is available for sale.Space-time adaptive processing (STAP) is two-dimensional adaptive filtering employed for the purpose of clutter cancellation to enable the detection of moving targets. It has been a major focus of research activity in radar applications for which the platform is in motion, e.g., airborne or space- based systems. In this setting, an antenna sensor array provides spatial discrimination, while a series of time returns or pulses form a synthetic array that ...


Optically Controlled SHF SATCOM Array DEC 95 66 pages
Authors:  Greg L. Abbas; BOEING DEFENSE AND SPACE GROUP SEATTLE WA
The full text of this report is available for sale.Photonics technology offers many advantages when applied to phased array antenna problems. These advantages include small size, low weight, low loss, wide bandwidth, and advanced signal processing functions such as high- resolution, broadband, amplitude and phase control, variable true time delay, and broadband correlation for jammer nulling. This one-year study contract investigated the use of integrated optical circuits for high-resolution amplitude and phase control of super high frequency (SHF) signals. ...


Evaluation of Rotman Lenses for Space-Based Radar DEC 95
Authors:  John W. Moffat; DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)
The full text of this report is not available and therefore is not for sale. This information is provided for reference purposes only.The Space Based Radar (SBR) R&D Project at DREO has been investigating the feasibility of the application of a number of different technologies to space based wide area surveillance using microwave radar. One of the technologies investigated was the Rotman lens implementation of a Fourier transform beam forming network. A number of Rotman lenses were designed and manufactured in stripline microwave structure under a development contract. The expected performance was ...


Advanced Surveillance Testbed (AST) Space Based Infrared Upgrades NOV 95 12 pages
Authors:  R. Chase; K. Singkofer; GENERAL RESEARCH CORP WESTLAKE VILLAGE CA
The full text of this report is available for sale.This report covers upgrades made to the General Research Corporation Advanced Surveillance Testbed (AST). Under this task, major upgrades were made to the AST phenomenological models. These included upgrades to the synthetic background models, development of a statistical persistence model, and development of a target intensity model based on CHARM and SIRRM. In addition, selected AST signal processing and data processing modules were upgraded to accommodate the newly defined phenomenological ...


Carbon Fiber Reinforced Glass Matrix Composites for Satellite Applications 31 OCT 95 143 pages
Authors:  William K. Tredway; UNITED TECHNOLOGIES RESEARCH CENTER EAST HARTFORD CT
The full text of this report is available for sale.The development of carbon fiber reinforced glass and glass-ceramic matrix composites for satellite applications is described. A variety of carbon fibers (HMU, P-i 00, FT7OO, K ii OOX) have been used to reinforce borosilicate glass and BMAS glass-ceramics to create high performance composite materials useful for structural applications in space. Fundamental material properties that are described in this report include tensile and compressive stress-strain behavior, tensile and compressive fatigue behavior, ...


Anti-Satellite Weapons, Countermeasures, and Arms Control 01 SEP 95 158 pages
Authors:  T. H. Karas; M. Callaham; R. DalBello; G. Epstein; OFFICE OF TECHNOLOGY ASSESSMENT WASHINGTON DC
The full text of this report is available for sale.At the requests of the House Armed Services Committee and the Senate Foreign Relations Committee, OTA undertook an assessment of the opportunities and risks involved in an accelerated program of research on new ballistic missile defense technologies, including those that might lead to deployment of weapons in space. The resulting report,'Ballistic Missile Defense Technologies', is being published concurrently with this volume. This report on 'Anti-Satellite Weapons, Countermeasures, and Arms Control' ...


Adaptive Sensor Arrays with Subband Signal Processing SEP 95 48 pages
Authors:  Mary Ann Ingram; GEORGIA INST OF TECH ATLANTA SCHOOL OF ELECTRICAL AND COMPUTER ENGINEERING
The full text of this report is available for sale.A tree structured multirate filterbank is used for low complexity space time adaptive processing for space based communications. The filterbank is used to improve convergence speeds in the Least Mean Squares (LMS) algorithm and to reduce processor complexity in a wideband adaptive array processor that performs interference cancellation.


Quasi-Weld-Free Bellows SEP 1995 39 pages
Authors:  William Raser; Paul Ibanez; Arthur Sullivan; Dave Clark; ANCO ENGINEERS INC BOULDER CO
The full text of this report is available for sale.This research investigated the merits of certain novel bellows designs for use in Stirling and pulse tube cryocooler compressors as an alternative to the present state of the art which uses flexure bearings. The Quasi-Weldfree (QWF) bellows incorporates the low dead volume of welded bellows and high fatigue life of formed bellows. There was also a secondary goal to investigate the merits of alternate materials. The design started with Roark- ...


Potential Applications of the ORBCOMM Global Messaging System to US military Operations JUN 95 93 pages
Authors:  David R. Coverdale; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
The full text of this report is available for sale.The author presents a detailed description of the components, architecture, links, and operations of the ORB COMM global messaging and position determination system. ORB COMM is the first commercial venture to offer worldwide personal communications service (PCS) using non-voice-non- geostationary (NVNG) low earth orbit (LEO) satellite technology. Link budget analyses of the system's satellite up and down links are presented. The author analyzes ORB COMM's proprietary multiple access scheme for ...


Is the U.S. Prepared to Execute Operational Space Control? 19 MAY 95 64 pages
Authors:  Tommy C. Brown; ARMY COMMAND AND GENERAL STAFF COLL FORT LEAVENWORTH KS SCHOOL OF ADVANCED MIL ITARY STUDIES
The full text of this report is available for sale.This study considers the argument for a more robust space control policy and force structure, to include the argument for an Anti-Satellite (ASAT) capability. This monograph addresses the validity of space control doctrine, as well as examining measures which ensure US access to space, and actions to deny that same use to an adversary.


Zenith Star Support Experiment Design MAY 95 124 pages
Authors:  J. W. Dettmer; LOCKHEED MISSILES AND SPACE CO INC ALBUQUERQUE NM
The full text of this report is available for sale.Experiments are proposed that can be performed on the SPICE structure in support of the Zenith Star Experiments. The fourteen experimental proposals fall into four categories: isolation of a space beam expander from on-board disturbances, evaluation of pointing and tracking systems, uses of advanced materials and passive damping, and characterization of disturbances. At least four experiments are proposed in each category. Those rated most valuable by Zenith Star personnel include: ...


Space Integrated Controls Experiment (SPICE) Program MAY 95 78 pages
Authors:  J. W. Dettmer; LOCKHEED MISSILES AND SPACE CO INC ALBUQUERQUE NM
The full text of this report is available for sale.The objective of the SPICE program was to demonstmte improvement in precision pointing, tracking, and retargeting by integration of active isolation, active and passive structural control, advanced materials, active optics, and adaptive control. Available flinding allowed only the implementation of the active isolation and active structural control. A linear, ftill-size, and well-characterized precision test-bed was developed to represent a space-based laser beam director structure. Key SPICE subsystem developments included: (1) ...


Space Power 2010 MAY 95 129 pages
Authors:  James L. Hyatt III; Paul L. Laugesen; Michael A. Rampino; Ronald R. Ricchi; Joseph H. Schwarz; AIR COMMAND AND STAFF COLL MAXWELL AFB AL
The full text of this report is available for sale.A working lexicon is created to assist in the process of analyzing US space power and in developing a desirable vision for its future. The authors first derive a definition of space power and military space power by drawing on scholarly interpretations of the notions of space and power. The authors then describe five elements of military space power. Guided by this formal concept of military space power and its ...


Cryogenic BRDF Measurements at 10.6 micrometers and 0.63 micrometers on Contaminated Mirrors FEB 95 88 pages
Authors:  B. L. Seiber; R. J. Bryson; W. T. Bertrand; B. E. Wood; ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFS TN
The full text of this report is available for sale.Effects of contaminants on optical surface are concern for space- based systems. Many systems contain cryogenic optical systems that operate at temperatures where gases condense. This study presents experimental results of the effects of condensed gases and spacecraft contaminants on highly polished (superpolished) mirror surfaces cooled, under vacuum to temperatures near 16 K and 70 K. After condensing contaminants on the mirror, the change in the bidirectional reflectance distribution function ...


Technology Applications Report 1995 99 pages
Authors:  BALLISTIC MISSILE DEFENSE ORGANIZATION WASHINGTON DC
The full text of this report is available for sale.This report highlights 50 examples of BMDO-funded technologies that have been or are being commercialized in areas such as communications energy, manufacturing, and medicine.


Blueprints for the Future: Comparing National Security Space Architectures 95 88 pages
Authors:  Christian C. Daehnick; AIR UNIV MAXWELL AFB AL SCHOOL OF ADVANCED AIRPOWER STUDIES
The full text of this report is available for sale.In recent years it has become cliche to speak of the growing importance of space systems and their capabilities to US national security in general and to military operations in particular. At the very least, the changing national security environment and our experiences in the Gulf War have caused a more open discussion of what those space-based capabilities are and what they should be. Along with a greater awareness of ...


New World Vistas: Air and Space Power for the 21st Century. Space Technology Volume 95 125 pages
Authors:  SCIENTIFIC ADVISORY BOARD (AIR FORCE) WASHINGTON DC
The full text of this report is available for sale.The Space Technology Panel's recommendations for technology investments derive from a vision of the Air Force in space in the 21St century, in which the Air Force has achieved survivable, on demand, real time, global presence that is affordable. This vision represents a revolutionary increase in capabilities for the Air Force and is achievable with targeted Air Force technology investments and adaptation of commercial developments. These technology investments will enable ...


Violating the Sanctuary. The Decision to Arm Space 17 DEC 94 62 pages
Authors:  Tommy C. Brown; ARMY COMMAND AND GENERAL STAFF COLL FORT LEAVENWORTH KS SCHOOL OF ADVANCED MIL ITARY STUDIES
The full text of this report is available for sale.This study examines the decision to deploy a space-based kinetic kill vehicle (SBKHV) by examining the validity, feasibility, suitability, and acceptability of such a deployment. Determining validity entails verifying that a need exists for the type of capability such a weapon might possess. By examining the development of other conventional weapons capabilities, one may define the operational need behind that development. For example, numerous programs are underway to address the ...


Ductile - Ductile Beryllium Aluminum Metal Matrix Composite Manufactured by Extrusion 01 DEC 94 6 pages
Authors:  Nancy F. Levoy; NUCLEAR METALS INC CONCORD MA
The full text of this report is available for sale.Beryllium-aluminum alloys are unique, in-situ ductile-ductile metal matrix composite alloys. Cast and extruded beryllium-aluminum composite alloys are expected to have a unique combination of properties that are attractive for applications such as ground and space based interceptor and tracking systems that require minimum weight, high stiffness, good damping capacity and thermal stability. Compared with other metal matrix composites, cast and extruded beryllium-aluminum composites are expected to have the advantages of: ...


Ductile - Ductile Beryllium Aluminum Metal Matrix Composite Manufactured by Extrusion 01 NOV 94 5 pages
Authors:  Nancy F. Levoy; NUCLEAR METALS INC CONCORD MA
The full text of this report is available for sale.Beryllium-aluminum alloys are unique, in-situ ductile-ductile metal matrix composite alloys. Cast and extruded beryllium-aluminum composite alloys are expected to have a unique combination of properties that are attractive for applications such as ground and space based interceptor and tracking systems that require minimum weight, high stiffness, good damping capacity and thermal stability. Compared with other metal matrix composites, cast and extruded beryllium-aluminum composites are expected to have the advantages of: ...


Advanced Compressor for Long Life Space Cryocoolers NOV 1994
Authors:  Peter W. Curwen; Warren D. Waldron; MECHANICAL TECHNOLOGY INC LATHAM NY
The full text of this report is not available and therefore is not for sale. This information is provided for reference purposes only.The objective of the program was to demonstrate the advantages (high reliability, low weight, and long life) of hermetically sealed diaphragm-type compressors intended for space cryocooler applications. To accomplish this objective, a "proof-of-concept" compressor was designed, built, and tested. The compressor was designed to drive a 30-k, O.5-W orifice-pulse-tube cryocooler under development by the National Institute of Standards and Technology (NIST). Compressor design requirements were developed around the pulse-tube cryocooler ...


Ballistic Missile Defense FY95 Funding & Language Track OCT 1994 270 pages
Authors:  BALLISTIC MISSILE DEFENSE ORGANIZATION WASHINGTON DC
The full text of this report is available for sale.This document presents requirements that must be met in the use of funds appropriated to BMDO for FY1995.


Classical Analysis Methods for Designing and Developing Downlooking Radars AUG 94 96 pages
Authors:  George Skahill; NTL TECHNOLOGIES INC GREENLAWN NY
The full text of this report is available for sale.This report describes analytical methods for characterizing the distributions of surface clutter as observed by downlooking radars over spherical planets, taking the classical, pencil and paper, methods of analytic geometry and calculus as far as possible before turning to computer based numerical evaluations. General expressions describing surface clutter power distributions in range and range-rate coordinates are developed in closed form and evaluated for several low PRF, phased array configurations. Information ...


CVD Silicon Carbide Characterization AUG 94 51 pages
Authors:  G. A. Graves Jr.; D. Iden; DAYTON UNIV OH RESEARCH INST
The full text of this report is available for sale.Chemically vapor deposited (CVD) silicon carbide is a candidate material for high quality ground and space-based mirror substrates and high quality reflective optics. Statistically valid material property data has not been available, however, to make durability and lifetime predictions for such optics. The primary purpose of this study was to determine the Weibull and slow crack growth parameters for CVD silicon carbide. Specimens were cut from various locations in a ...


Department of Defense High Power Laser Program Guidance 06 JUN 94 23 pages
Authors:  Clifford H. Muller; PHILLIPS LAB KIRTLAND AFB NM
The full text of this report is available for sale.The DoD investment of nominally $200 million per year is focused on four high power laser (HPL) concepts: Space-Based Laser (SBL), a Ballistic Missile Defense Organization effort that addresses boost-phase intercept for Theater Missile Defense and National Missile Defense, Airborne Laser (ABL), an Air Force effort that addresses boost-phase intercept for Theater Missile Defense, Ground-Based Laser (GBL), an Air Force effort addressing space control, and Anti-Ship Missile Defense (ASMD), a ...


A Multiscale Random Field Model for Bayesian Image Segmentation JUN 94 53 pages
Authors:  Michael Shapiro; Charles Bouman; Calvin F. Bagley; CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL
The full text of this report is available for sale.The Army's Land Condition Trend Analysis (LCTA) program collects both space-based remotely-sensed data and ground-level data for natural resource inventory and evaluation. Coupling remotely sensed digital data with traditional ecological ground data could help Army land managers inventory and monitor natural resources. This study used LCTA data sets to test image segmentation algorithms that may be used to interpret remotely sensed digital data. Many approaches to Bayesian image segmentation have ...


Information Management Performance of Future Platoon Leaders: An Initial Investigation JUN 94 79 pages
Authors:  Carl W. Lickteig; Cathy D. Emery; ARMY RESEARCH INST FIELD UNIT FORT KNOX KY
The full text of this report is available for sale.As the Army moves toward vehicle-based automated command and control (C2) systems, small unit commanders face new challenges in managing battlefield information. This report evaluates the information management performance of platoon leaders equipped with a future C2 system. Findings indicate that the number and relevance of messages received affect information processing speed and accuracy and the type of action taken. High message volume resulted in the loss of appropriate information ...


Optical Remote Sensing of the Atmosphere. Technical Digest 1993. Volume 5. Postconference Edition JUN 94 522 pages
Authors:  Jarus W. Quinn; OPTICAL SOCIETY OF AMERICA WASHINGTON DC
The full text of this report is available for sale.The agenda of sessions includes water vapor, space & ground based remote sensing, clouds and ECLIP, winds, ozone, aerosols, spectroscopy and new developments.


The High Altitude Balloon Experiment Demonstration of Acquisition, Tracking and Pointing Technologies (HABE-ATP). 18 MAY 1994
Authors:  David Dimiduk; Michael Caylor; David Williamson; Lanny Larson; PHILLIPS LAB KIRTLAND AFB NM
The full text of this report is not available and therefore is not for sale. This information is provided for reference purposes only.The High Altitude Balloon Experiment demonstration of Acquisition, Tracking, and Pointing (HABE-ATP) is a system build around balloon-borne payload which is carried to a nominal 26-km altitude. The goal is laser tracking thrusting theater and strategic missiles, and then pointing a surrogate laser weapon beam, with performance levels and a timeline traceable to operational laser weapon system requirements. This goal leads to an experiment system design which combines hardware from ...


Advanced Induction Accelerator Designs for Ground Based and Space Based FELs 30 APR 94 138 pages
Authors:  Daniel Birx; SCIENCE RESEARCH LAB INC SOMERVILLE MA
The full text of this report is available for sale.The primary goal of this program was to improve the performance of induction accelerators with particular regards to their being used to drive Free Electron Lasers (FELs). It is hoped that FELs operating at visible wavelengths might someday be used to beam power from earth to extraterrestrial locations. One application of this technology might be strategic theater defense, but this power source might be used to propel vehicles or supplement ...


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