| Shield Optimization Program, Part 2: Effects of Van Allen Belt Radiation on SDI Weapon Platforms |
DEC 1988 |
54 pages |
| Authors:
J. M. Barnes; R. T. Santoro; J. O. Johnson; J. D. Drischler; T. A. Gabriel; OAK RIDGE NATIONAL LAB TN
|
 | The effects of both natural and man-made Van Allen Belt (VAB) radiation at an altitude of 500 km are presented for various components of a prototypic space-based interceptor (SBI) weapon platform. The weapon platform is described in detail and represents the authors' concept of such a system. The calculated results show that the SBI platform will survive long term (10 years) exposure to natural VAB protons and electrons. However, when ... |
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| Increasing the Margin of Stability of Arbitrarily Finite Modes of Flexible Large Space Structures with Damping |
DEC 88 |
|
| Authors:
I. Lasiecka; R. Triggiani; VIRGINIA UNIV CHARLOTTESVILLE DEPT OF APPLIED MATHEMATICS AND COMPUTER SCIENC E
|
 | Achievements during this report period include new results for wave equations and plate equations, linear and nonlinear, on the following problems: exact controllability, strong and uniform stabilization, structural damping, quadratic optimal control problem, Riccati equations, and numerical aspects thereof. Keywords: Space based flexible structures, Equations of motion. |
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| An Analysis of Platinum Silicide and Indium Antimonide for Remote Sensors in the 3 to 5 Micrometer Wavelength Band |
DEC 88 |
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| Authors:
Neil F. Schoon; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
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| Platinum Silicide and Indium Antimonide are compared as detector materials in a space based remote sensor using the 3 to 5 micrometer wavelength band. The comparison is based on a scaled count rate involving the material's quantum efficiency, a target's reflected solar and thermal emittances, the atmospheric transmission, and the wavelength. The comparison is made using a baseline scenario and seven sensitivity analysis scenarios. The baseline scenario uses a target ... |
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| SDI (Strategic Defense Initiative) Battle Management/C3 (Command, Control, and Communications) Networking Technology Program Plan. |
DEC 1988 |
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| Authors:
Robert Botta; Sharon Noll; INSTITUTE FOR DEFENSE ANALYSES ALEXANDRIA VA
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| The Institute for Defense Analyses (IDA) has collected and analyzed information on network technology that is relevant to Battle Management Command, Control, and Communications (BM/C3). This memorandum report represents a program plan that will provide the SDIO BM C3 directorate with administrative and technical insight into network technology. This program plan focuses on C3 network concepts and provides information and analysis to the SDIO to be used in formulating budget ... |
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| A Report on the Possible Benefits of Using High-Temperature Superconductor Materials in Particle Accelerator Design |
DEC 88 |
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| Authors:
Leslie Cohen; Robert Collins; Bohdan Balko; INSTITUTE FOR DEFENSE ANALYSES ALEXANDRIA VA
|
| This report discusses different design concepts for particle beam accelerators. It demonstrates that with the use of high temperature superconducting materials, a more compact, lighter, and more robust accelerator design can be realized for the space based neutral particle beam (NPB) accelerator. Particle accelerators, Neutral particle beam, High temperature superconductivity, Cryogenic systems, Directed energy weapons, RF cavities. (mjm) |
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| Nonlinear Dynamics and Control of Flexible Structures |
15 NOV 88 |
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| Authors:
W. H. Bennett; H. G. Kwatny; G. L. Blakenship; O. Akhrif; SYSTEMS ENGINEERING INC GREENBELT MD
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| The unprecedented requirements for rapid retargeting and precision pointing for spaced-based directed energy weapon platforms is the prime driver behind the reported modeling and control study. The combination of such requirements demand a comprehensive dynamic model of the nonlinear multibody dynamics of typical space platforms for such weapon including the interaction platform structural flexure effecting principal weapon system effective Line-Of- Sight. This report describes the first year effort of a ... |
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| Validate Algorithms for the Determination of Rainfall Rates from SSM/I Microwave Satellite Imagery |
15 NOV 88 |
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| Authors:
William S. Olson; WISCONSIN UNIV-MADISON SPACE SCIENCE AND ENGINEERING CENTER
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| Analysis of Space-Based Lidar for Aircraft Tracking |
NOV 88 |
135 pages |
| Authors:
Scott P. Simmonsa; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
|
| This study is a general analysis of the feasibility of tracking aircraft from space using a laser radar or lidar. The basis for the analysis is the lidar range equation. Specific hardware is not discussed. A computer program was written to model the different parameters involved with the analysis. Atmospheric attenuation equations, which were developed from FASCODE data, define the atmospheric losses for two type of atmospheres (clear and haze). ... |
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| A Comparison of Cross-Stream Velocities and Gulf Stream Translations Utilizing in-situ and Remotely-Sensed Data |
OCT 88 |
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| Authors:
Clark B. Freise; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
| In previous Gulf Stream work, a decomposition of multiple depth current records was developed which produced along- and cross-stream components. The cross-stream component was found to occasionally match lateral displacements of the Stream, as determined by temperature changes measured at the current meters. This study determined where, within the meander pattern of the Gulf Stream, the Cross-stream velocity calculated from current meters at depth correctly predicted translations of the Gulf ... |
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| Design of a Wafer-Scale Focal Plane Processor |
15 SEP 88 |
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| Authors:
P. C. Trepagnier; MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
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| This report describes a wafer-scale design for an infrared focal place processor (FPP) to operate in a space environment. The functions of a generic focal plane processor are described, followed by a detailed discussion of a design to be implemented in RVLSI wafer-scale technology for a space-based application. A prototype of this processor (PFPP) will actually be fabricated in rad-hard silicon-on-insulator 3-micrometers technology. Finally, the question of reliability is explored, ... |
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| Sea Surface Temperature and Salinity Structure of Cold Upwelling Filaments Near Point Arena as Observed Using Continuous Underway Sampling Systems |
SEP 88 |
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| Authors:
Richard L. Snow; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Three quasi-synoptic maps of the surface expression of cold filaments off Point Arena, California were made during a pilot program cruise for the Coastal Transition Zone Experiment in June 1987. This thesis describes the sea surface temperature and salinity fields as observed by the continuous underway sampling system installed onboard the R/V POINT SUR. Transects across the survey region revealed the presence of three distinct filaments. Filament A was typically ... |
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| The Impact of Satellite Infrared Sea Surface Temperatures on the FNOC (Fleet Numerical Oceanography Center) EOTS (Expanded Ocean Thermal Structure) Regional Gulf Stream Analysis |
JUL 88 |
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| Authors:
Douglas A. May; Jeffrey D. Hawkins; NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY STENNIS SPACE CENTER MS
|
| In July 1987, two Expanded Ocean Thermal Structure (EOTS) analysis runs were made daily at 12Z for 5 consecutive days. These runs were made offline at the FNOC for the ENOTS Gulf Stream region. All available satellite multichannel sea surface temperature (MCSST) retrievals, ship reports, and expendable bathythermograph observations were assimilated into the first analysis, with MCSSTs withheld from the second to determine satellite data impact on the analysis. Aircraft-launched ... |
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| Transient Thermal Analysis of Three Latent Heat Storage Configurations for Rapid Thermal Charging |
MAY 88 |
|
| Authors:
Therese K. Stovall; OAK RIDGE NATIONAL LAB TN ENGINEERING TECHNOLOGY DIV
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| A space-based thermal storage application must accept large quantities of heat in a short period of time at an elevated temperature. An approximate model of a lithium hydride phase change energy storage system was used to estimate reasonable physical dimensions for this application which included the use of a liquid metal heat transfer fluid. A finite difference computer code was developed and used to evaluate three methods of enhancing heat ... |
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| The Effect of Mechanical Deformation on the Radiation Patterns of Large Space-Based Arrays |
30 APR 88 |
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| Authors:
Gwendolyn M. Shaw; AEROSPACE CORP EL SEGUNDO CA ELECTRONICS RESEARCH LAB
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| Large phased arrays for space applications require light-weight deployable structures. As these structures are not completely rigid, they undergo dynamic deformations in orbit that are typically expressed as mechanical modes of surface position. In contrast with conventional antenna tolerance theory, which is based on a random Gaussian representation of manufacturing tolerance, these deformations follow a deterministic function. The effects of these mechanical deformations on the radiation performance of the phased ... |
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| The Effect of Operating Temperature on Open, Multimegawatt Space Power Systems |
APR 1988 |
31 pages |
| Authors:
Michael W. Edenburn; SANDIA NATIONAL LABS ALBUQUERQUE NM
|
| In this study, we have addressed reactor-powered and combustion- powered multimegawatt, burst-mode, space power systems to evaluate the effect turbine inlet temperature will have on their performance and mass. Both systems will provide power to space-based antiballistic missile weapons that require hydrogen for cooling, and both use this hydrogen coolant as a working fluid or as a fuel for power generation. The quantity of hydrogen needed for weapon cooling increases ... |
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| Soviet Space Program Handbook |
APR 88 |
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| Authors:
Roy Longstaffe; AIR COMMAND AND STAFF COLL MAXWELL AFB AL
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| This study establishes the need for a handbook on the Soviet space program. The first section describes the three Soviet space launch sites. The second describes the operational Soviet space launch vehicles including their dimensions, capabilities, and payloads. Each major Soviet satellite program is then described in detail. Included here are orbital parameters, constellation sizes and phasings, mission profiles, and vehicle descriptions. And finally, the handbook contains several useful appendices ... |
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| Voltage-Tunable Microwave Monolithic Integrated Circuits |
01 MAR 88 |
|
| Authors:
Malcolm McColl; AEROSPACE CORP EL SEGUNDO CA LAB OPERATIONS
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| The incorporation of voltage-tunable reactive elements in microwave monolithic integrated circuits (MMICs) would increase the performance, yield, producibility, adaptability, and affordability of these devices. These improvements would be very important for both low-volume applications, (e.g., space communications) and high-volume applications, (e.g., space-based radar). The feasibility of this concept will be explored by means of the computer-aided design and simulation facilities at The Aerospace Corporation. It is anticipated that some laboratory ... |
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| Adapting Schottky Diode Detector Technology to a Space Platform |
10 FEB 88 |
|
| Authors:
Joseph Kristl; Ronald Huppi; UTAH STATE UNIV BEDFORD MA STEWART RADIANCE LAB
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| Schottky barrier focal plane arrays have demonstrated superior performance in imagery and sensitivity in cameras deployed on the ground and on airborne platforms. This study determines the feasibility of placing a camera using one of these arrays in space in the space shuttle cargo bay or on the Shuttle Pallet Satellite. The basic operation and performance of platinum silicide Schottky barrier detectors is first discussed. Then a detailed analysis of ... |
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| Supplemental Information on a Conceptual Design of a Space-Based Multimegawatt MHD Power System |
FEB 1988 |
96 pages |
| Authors:
B. L. Pierce; R. R. Holman; J. R. Lance; WESTINGHOUSE ADVANCED ENERGY SYSTEMS DIV LARGE PA
|
| The objective of this project is to perform a feasibility assessment of space-based multimegawatt (MMW) magnetohydrodynamic (MHD) power systems for Strategic Defense Initiative Organization (SDIO) mission applications and to resolve technical uncertainties that may impact their future implementation. The ultimate goal of the SDIO is to provide security for the United States and Its allies. The near term objective of the SDIO is to conduct research on those technologies for ... |
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| Army Space Systems for Terrestrial Applications |
14 JAN 88 |
|
| Authors:
Ronald L. Dickerman; Richard B. Gomez; ARMY ENGINEER TOPOGRAPHIC LABS FORT BELVOIR VA
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| Army combat forces involved in global military operations require knowledge of the terrain and accurate positioning and navigation capability to effectively perform their missions. Combat critical data from satellite-based systems to augment ground and airborne data collection, processing, and dissemination systems are crucial for the delivery and use of the needed information and intelligence in near-real time. The Army is developing ground- based testbed systems to utilize terrain and weather ... |
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| Innovative Energy conversion Schemes for Space Based Strategic Defense Systems |
01 JAN 88 |
31 pages |
| Authors:
Martin I. Hoffert; NEW YORK UNIV NY DEPT OF APPLIED SCIENCE
|
| A major objective of the Strategic Defense Initiative research program is the development of technologies capable of destroying fleets of ICBM's in the boost phase of their mission by directed energy weapons, perhaps based on a constellation of orbiting satellites or Battle Stations. A strategic defense system may therefore be viewed as a series of energy conversion steps terminating in the deposition of a "lethal" energy flux on ballistic targets ... |
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| Conceptual Design of a Space-Based Multimegawatt MHD Power System, Task 1 Topical Report; Volume 1: Technical Discussion |
01 JAN 88 |
214 pages |
| Authors:
R. A. Dana; WESTINGHOUSE ELECTRIC CORP PITTSBURGH PA ADVANCED ENERGY SYSTEMS DIV
|
| This Topical Report presents the results of Task 1 of the Feasibility Assessment for Space Based Multimegawatt MHD Power Systems program. It consists of two volumes. Volume 1 contains the results of the work performed in Task 1 as presented and discussed in Sections 2 through 6. Section 2 is an executive summary of the work. Section 3 contains a complete description of the space based multimegawatt MHD power system ... |
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| Conceptual Design of a Space-Based Multimegawatt MHD Power System |
JAN 1988 |
144 pages |
| Authors:
J. R. Barton; F. E. Bernard; R. A. Carrington; L. P. Hanson; R. R. Holman; WESTINGHOUSE ELECTRIC CORP PITTSBURGH PA ADVANCED ENERGY SYSTEMS DIV
|
| This report presents the system requirements and design guidelines for the space based multimegawatt MHD power system conceptual design, and comprises Volume 2 of the topical report describing the Task 1 MHD Power System Conceptual Design and Development Plan. In the interest of completeness, this report includes a summary description of the MHD power system concept with the functional requirements, design scope and design objectives. Then subsequent sections present the ... |
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| Proceedings of the Annual Mechanics of Composites Review (12th) Held in Wright-Patterson AFB, Ohio on 16-17 October 1987 |
JAN 88 |
|
| Authors:
Deborah C. Mueller; AIR FORCE WRIGHT AERONAUTICAL LABS WRIGHT-PATTERSON AFB OH MATERIALS LAB
|
| The Air Force has long recognized the potential that composite structural materials have in aerospace applications. Accordingly, the Air Force has supported and continues to support research in composites conducted at Universities, Industry, and Government Laboratories. Our understanding of composites, although still in an evolving state, and a number of successful applications have demonstrated the gains possible when various materials are carefully combined at the microstructural level to yield the ... |
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| Space-Based Surveillance and Tracking System (SSTS), Environmental Assessment |
AUG 87 |
|
| Authors:
Gale Brown; STRATEGIC DEFENSE INITIATIVE ORGANIZATION WASHINGTON DC
|
| The Strategic Defense Initiative Organization plan to conduct Demonstration/Validation tests of the SSTS technology. These tests will demonstrate the ability of the technology to perform required tasks, and will validate a future decision on whether to proceed with Full-Scale Development. Demonstration/Validation tests would be conducted at the Arnold Engineering Development Center, Nevada Test Site, Vandenberg Air Force Base/Western Test Range, Cape Canaveral Air Force Station/Eastern Test Range, Kennedy Space Center, ... |
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| Strategic Defense Initiative Demonstration/Validation Program Environmental Assessment. Space-Based Interceptor (SBI) |
AUG 87 |
|
| Authors:
G. Brown; STRATEGIC DEFENSE INITIATIVE ORGANIZATION WASHINGTON DC SYSTEMS ENGINEERING
|
| The Strategic Defense Initiative Organization (SDIO) and its proponents (the U.S. Army and the U.S. Air Force) plan to conduct Demonstration/ Validation tests of the SBI technology. These tests will demonstrate the ability of the technology to perform the required tasks, and validate a future decision on whether to proceed with Full-Scale Development. Demonstration/Validation tests would be conducted at Eglin Air Force Base, Edwards Air Force Base, U.S. Army Kwajalein ... |
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| Strategic Defense Initiative Demonstration/Validation Program Environmental Assessment. Boost Surveillance and Tracking System (BSTS) |
AUG 87 |
|
| Authors:
G. Brown; STRATEGIC DEFENSE INITIATIVE ORGANIZATION WASHINGTON DC SYSTEMS ENGINEERING
|
| The Strategic Defense Initiative Organization (SDIO) and its proponents (U.S. Air Force) plan to conduct Demonstration/Validation tests of the BSTS technology. These tests will demonstrate the ability of the technology to perform required tasks, and will validate a future decision on whether to proceed with Full-Scale Development. Demonstration/Validation tests would be conducted at the National Test facility, Cape Canaveral Air Force Station/ Eastern Test Range, and at contractor facilities. Tests ... |
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| Strategic Defense Initiative Demonstration/Validation Program Environmental Assessment. Space-Based Surveillance and Tracking System (SSTS) |
AUG 87 |
|
| Authors:
G. Brown; STRATEGIC DEFENSE INITIATIVE ORGANIZATION WASHINGTON DC SYSTEMS ENGINEERING
|
| The Strategic Defense Initiative Organization (SDIO) and its proponents (the U.S. Army and the U.S. Air Force) plan to conduct Demonstration/ Validation tests of the SSTS technology. These tests will demonstrate the ability of the technology to perform required tasks, and will validate a future decision on whether to proceed with Full-Scale Development. Demonstration/ Validation tests would be conducted at the Arnold Engineering Development Center, Nevada Test Site, Vandenburg Air ... |
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| Space-Based Interceptor (SBI), Environmental Assessment |
AUG 87 |
|
| Authors:
Gale Brown; STRATEGIC DEFENSE INITIATIVE ORGANIZATION WASHINGTON DC SYSTEMS ENGINEERING
|
| The Strategic Defense Initiative Organization and its proponents plan to conduct Demonstration/Validation tests of the SBI technology. These tests will demonstrate the ability of the technology to perform the required tasks, and validate a future decision on whether to proceed with Full-Scale Development. Demonstration/Validation tests would be conducted at Eglin Air Force Base, Edwards Air Force Base, U.S. Army Kwajalein Atoll, National Test Facility, and contractor facilities. Tests would include ... |
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| The Soviet Military on SDI |
AUG 87 |
|
| Authors:
Mary C. FitzGerald; CENTER FOR NAVAL ANALYSES ALEXANDRIA VA NAVAL WARFARE OPERATIONS DIV
|
| Numerous Western analysts have suggested that all American assessments of SDI should proceed not only from a consideration of American intentions, but also from the outlook of Soviet perceptions. Since 23 March 1983, the prevailing tone of Soviet military writings on SDI has been overwhelmingly negative. Myron Hedlin has concluded that this harsh reaction to a U.S. initiative still years from realization suggests both a strong concern about the ultimate ... |
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| Relating Service Doctrine to Space System Requirements |
JUN 87 |
|
| Authors:
Thomas W. Light; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The objective of this thesis is to demonstrate a method of relating doctrine to requirements when considering space concepts. Service contractors, consider the advantages of space, and then relate the advantages of space to the overall context of the proposed space system working within current and future military organizations. To perform these tradeoffs requires a strong foundation in how the services plan to operate in the next conflict; the AirLand ... |
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| Potential Observing Systems for Tropical Cyclone Motion Studies |
MAY 87 |
|
| Authors:
Russell L. Elsberry; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| A synopsis is presented of a workshop during April 1987 sponsored jointly by the Hurricane Research Division (HRD) of the National Oceanographic and Atmospheric Administration (NOAA) and the Marine Meteorology Section of the Office of Naval Research (ONR). The objective of the workshop was to exchange information and begin documentation of observational systems that can be used in tropical cyclone studies. HRD personnel described the objectives of their annual field ... |
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| Multi-Disciplinary Techniques for Understanding Time-Varying Space-Based Imagery |
29 APR 87 |
|
| Authors:
David Casasent; Arthur Sanderson; Takeo Kanade; B. V. Vijaya Kumar; CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF ELECTRICAL AND COMPUTER ENGINEERIN G
|
| This project combined pattern recognition, image understanding and artificial intelligence techniques for space-based image processing. A special feature of this effort is the attempt to use both optical and digital processing methods. Subpixel target detection and tracking algorithms are analyzed and conclusions are presented regarding their suitability for this application. We also present an adaptive subpixel delay estimation method using Group-Delay Functions. Image understanding techniques for three dimensional scene interpretation ... |
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| An Oceanographer in Space: The Next Step |
03 MAR 87 |
|
| Authors:
Paul E. La Violette; Charles S. Yentsch; John R. Apel; NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY NSTL STATION MS
|
| The U.S. Navy is developing a long-range program for an oceanographer in space. This program will become part of a fully integrated Office of the Chief of Naval Research (OCNR) science and technology plan to guide further programs in space oceanography. These activities serve two purposes, with the first leading to the second: to show the current ideas on shuttle based oceanography and to elicit comments from the scientific community ... |
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| Computer Simulation of a Rotational Single-Element Flexible Spacecraft Boom |
MAR 87 |
|
| Authors:
Robert S. Laufenberg; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The requirement to develop a space based remote ocean sensing platform exists within the Department of the Navy. This project models a satellite subsystem with structural flexibility utilizing the Equivalent Rigid Link System (ERLS). Dynamic analysis with computer simulation is presented for a simple flexible boom rotating in three dimensions with and without a point mass at the boom tip. Keywords: Theses; Flexible manipulators; Equations of motion. (Author) |
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| The Liquid Droplet Radiator in Space: A Parametric Approach |
MAR 87 |
|
| Authors:
Gerald L. Buckner; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
|
| A successful space mission must have a source of electrical power whether the mission is manned, unmanned, scientific, or nationally strategic. The generation of this electric power will require the rejection of waste heat. For example, the Strategic Defense Initiative will have space based systems generating large amounts of electrical energy with much waste heat energy to be radiated to space. Other space applications requiring from 100 kilowatts to over ... |
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| Space-Based Multifunction Radar Systems: Future Tool for Civilian and Military Surveillance, |
DEC 1986 |
|
| Authors:
G. Galati; G. Losquadro; ROME UNIV (ITALY)
|
| Space-based surveillance systems, including primary radar (SBR) and secondary surveillance radar (SBSR) are of interest for both the Air Traffic Control and the Air Defence. This paper surveys the relevant state of the art, architectures considers surveillance system with special reference to the European scenario and closes with remarks pointing toward areas of future work. |
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| Homogenizing Surface and Satellite Observations of Cloud |
28 NOV 86 |
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| Authors:
Ann Henderson-Sellers; Alan Goodman; EUROPEAN OFFICE OF AEROSPACE RESEARCH AND DEVELOPMENT FPO NEW YORK 09510
|
| The major types of cloud retrieval algorithms are reviewed with special emphasis being placed upon recent developments and novel techniques. Satellite based retrieval algorithms can be grouped into three classes: threshold methods, statistical procedures and radiative transfer techniques although each algorithm depends upon implicit, if not overt, inversion of the radiative transfer equation. The fourth type of retrieval differs very considerably from the satellite based techniques as it depends upon ... |
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| Analysis of Space-Based Radar Clutter Spectra Over Different Types of Terrain and Their Effects on Detection Performance |
21 NOV 86 |
|
| Authors:
D. Faubert; B. J. Rook; W. Tam; COMMUNICATIONS RESEARCH CENTRE OTTAWA (ONTARIO)
|
| A computer model was used to make a detailed analysis of the clutter spectra received by real aperture Space-Based Radars orbiting over different types of terrain. The influence of terrain on L-band SBR detection performance has also been studied. It was found that the clutter spectra tend to become narrower as the grazing ange of the antenna increases but that they broaden as the antenna points progressively more away from ... |
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| Intense Excitation Source of Blue-Green Laser |
06 OCT 86 |
|
| Authors:
Kwang S. Han; HAMPTON UNIV VA DEPT OF PHYSICS
|
| An intense and efficient source for blue green laser useful for the space-based satellite laser applications, underwater strategic communication, and measurement of ocean bottom profile is being developed. The source in use, the hypocycloidal pinch plasma (HCP), and the dense plasma focus (DPF) can produce intense uv photons (200-400nm) which match the absorption spectra of both near uv and blue green dye lasers (300-400nm). As a result of optimization of ... |
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| A Simulation Model for Detecting Airborne Targets by Radar |
JUN 86 |
|
| Authors:
Suzanne Y. Slinn; Mark W. Lovell; Denise C. Miller; DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)
|
| In support of the Space Based Radar (SBR) surveillance system technologies, a satellite simulation model has been multiple radar satellites, simulates the radar beam in order to study the surveillance coverage capabilities of the satellites and finally, simulates the detection of airborne targets. This report summarizes the major mathematical concepts involved in the model and provides an overview of the computer implementation of this model. (Canada) |
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| Comparisons of the Detection Performance of a Space-Based Radar System Using Different Antenna Systems and Aperture Illuminations |
MAY 86 |
|
| Authors:
B. J. Rook; COMMUNICATIONS RESEARCH CENTRE OTTAWA (ONTARIO)
|
| Comparisons have been made of the results of the detection performance of a space-based radar (SBR) system using uniformly-illuminated circular apertures, and the same apertures with Taylor weighting applied. From the studies, it is shown that the detection performance of an SBR system can be greatly improved with the application of the latter form of weighting. For the comparative studies, two antenna systems with the same physical dimensions were used, ... |
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| STS (Space Transportation System) Experiment Support Structure Needs Assessment |
APR 86 |
|
| Authors:
Wallace A. Beauchamp; AIR COMMAND AND STAFF COLL MAXWELL AFB AL
|
| The DOD space-based research and development program has a growing dependence on the Space Transportation System (STS). A shortfall in STS experiment support structures impedes the flight of the DOD payloads. This study looks at the existing support system from a management perspective in order to develop a procurement strategy for additional experiment support structures. The study concludes that a major problem is the existing nasa manifesting system. It recommends ... |
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| Comments on Optical Transfer Function Techniques and SAR (Synthetic Aperture Radar) Imaging |
31 MAR 86 |
|
| Authors:
Niels Jensen; EOS TECHNOLOGIES INC SANTA MONICA CA
|
| Optical transfer function techniques are reviewed and applied to the problem of analyzing and specifying synthetic aperture radar (SAR) image quality. Integrated side lobe ratio is compared to similar optical measurements. The effect of pulse repetition frequency (PRF) on non-coherent transfer functions is discussed. Non-coherent and coherent transfer functions are discussed. Keywords: Inage Quality; Space Based Radar; Radar Performance; Optical Transfer Techniques; Synthetic Aperture Radar. |
|
| SDI: Progress and Challengers |
17 MAR 1986 |
65 pages |
| Authors:
Douglas Waller; James Bruce; Douglas Cook; STRATEGIC DEFENSE INITIATIVE ORGANIZATION WASHINGTON DC
|
| Since March, 1983, when the President set forth his vision of a space-based defense, which, in his own words, would set us free from the prison of nuclear weapons' the United States has embarked on the most challenging, controversial and visionary defense program in its history. This staff study was conducted at the request of Senator Proxmire, Senator Chiles and Senator Johnston as the Strategic Defense ... |
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| Morality to Strategy: Perspectives on Offensive Weapons in Space |
MAR 86 |
|
| Authors:
James E. Beale; AIR WAR COLL MAXWELL AFB AL
|
| Since President Reagan introduced the concept of a Strategic Defense Initiative (SDI) in March 1983, space-based weapons have been a subject of broad national debate. To date, all consideration has focused on defensive applications, yet the technology which permits SDI is equally capable of supporting offensive weapons. This paper proposes increased consideration of offense related space issues. It outlines the moral, political, and military implications of such weapons and identifies ... |
|
| An Evaluation of Potential Countermeasures to the Strategic Defense Initiative |
MAR 86 |
|
| Authors:
Duane M. Lafont; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The key uncertainty within the Strategic Defense Initiative is not whether a multitiered ballistic missile defense can be designed and implemented but rather in the possibility that the intercept system can be readily countered. Additionally, the viability of SDI is dependent upon its cost effectiveness; a defense should not be considered if it can be overcome at a significantly lesser cost. To quantify these uncertainties, the Strategic Defense Initiative is ... |
|
| A Solid State Data Recorder for Space-Based Applications Using Magnetic Bubble Memory |
MAR 86 |
|
| Authors:
Tina-Marie D'Ercole; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Earthbound recording systems come in many sizes and use various mediums on which to record the data. The harsh environment of space, however, introduces some unique problems. This limits the number of choices not only for the type of system but also for the optimum recording medium. How changes in temperature, radiation, lack of air, etc., affect the performance of the device as a whole must all be considered. Magnetic ... |
|
| A 32-Bit Microprocessor Based Solid State Data Recorder for Space Based Applications |
MAR 86 |
|
| Authors:
Thomas J. Frey Jr; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| A need exists for non-volatile, reliable and radiation hardened mass data storage devices for space applications. Tape recorders modified for use in the space environment have proven both expensive and unreliable. The use of magnetic bubble memory as a recording medium in recent space projects offers a promising alternative to tape recorders. This thesis develops the design of a 32-bit microprocessor based advanced solid state data recorder for space based ... |
|
| Orbital Transfer Vehicle Concept Definition and Systems Analysis Study, Volume 1: Executive Summary |
01 FEB 86 |
46 pages |
| Authors:
Glen J. Dickman; Joseph T. Keeley; MARTIN MARIETTA AEROSPACE DENVER CO
|
| The NASA sponsored, advanced upper stage studies conducted during the past decade will provide major solutions to help determine the future program for advanced technology orbital transfer vehicles operating both from the ground and from a space base. The space based systems will provide a new era of payload delivery capabilities for a wide variety of users, with space basing advantages and new economics for the users. This study describes ... |
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Reports by Keyword(s)
SPACE BASED
