| High Efficiency, Room Temperature Mid-Infrared Semiconductor Laser Development for IR Countermeasures |
May-2009 |
21 pages |
| Authors:
Karen J Nordheden; Linda J Olafsen; KANSAS UNIV CENTER FOR RESEARCH INC LAWRENCE
|
 | This purpose of this grant focused on the optical and electronic characterization and fabrication of antimonide-based semiconductor lasers for infrared applications. Recent results with Optical Pumping Injection Cavity (OPIC) lasers includes 4 micrometer emission from a broadband laser and the measurement of spatial and temporal beam profiles. From August 2006 through December of 2007, the work was expanded to include the development of plasma etch processes in an Oxford Instruments ... |
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| Genesis of Infrared Decoy Flares: The Early Years from 1950 into the 1970s. First Edition |
26-Jan-2009 |
186 pages |
| Authors:
Bernard E Douda; NAVAL SURFACE WARFARE CENTER CRANE DIV IN
|
| The evolution of decoy flares did not follow a direct or pre-planned path. Instead, the development was influenced by many factors and requirements existing at the time. One of the most important of these is that the Naval Ordnance Test Station (NOTS), Inyokern China Lake, California had an assigned mission to develop rockets and missiles. This mission became the basis for the requirement that drove flare developments. Fortunately there were ... |
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| Motion Camouflage in a Stochastic Setting |
Dec-2007 |
10 pages |
| Authors:
K S Galloway; E W Justh; P S Krishnaprasad; MARYLAND UNIV COLLEGE PARK OFFICE OF RESEARCH ADMINISTRATION AND ADVANCEMENT
|
| Recent work has formulated 2- and 3-dimensional models and steering control laws for motion camouflage, a stealthy pursuit strategy observed in nature. Here we extend the model to encompass the use of a high-gain pursuit law in the presence of sensor noise as well as in the case when the evader's steering is driven by a stochastic process, demonstrating (in the planar setting) that motion camouflage is still accessible (in ... |
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| Aircraft Countermeasures (ACCM) Human Effects Test Analysis |
01-Jun-2007 |
33 pages |
| Authors:
Greg Steeger; Edward Viale; OFFICE OF AEROSPACE STUDIES KIRTLAND AFB NM
|
| Aircraft Counter Measures (ACCM) is a laser system designed to provide significant glare source. It is part of a Warfighter Rapid Acquisition Program (WRAP) involving AFSOC/A5T, AFRL/DE, AFRL/HE, and Boeing Scorpworks Lab. Green light laser of particular wavelength, found to create a "dazzling effect" on the human eye. The main purpose of this test was to determine if the ACCM laser system works as an effective counter measure against small ... |
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| Militaire Toepassingen Van Adaptieve Optiek (Military Applications of Adaptive Optics) |
SEP 2006 |
|
| Authors:
H. T. Berkman; F. M. van Putten; P. Fritz; TNO DEFENSE SECURITY AND SAFETY RIJSWIJK (NETHERLANDS)
|
 | In this project the benefits of adaptive optics for military applications are assessed. Adaptive optics can be used in electro-optical camera systems and it can be used in laser systems such as directed infrared counter measure systems. In a WEAG project JP8.11 on Precision Laser Beam Steering the benefits of adaptive optics for long range target identification and DIRCM have been evaluated. The findings of the study group are reported ... |
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| Computer Estimated Probability of Detection: Can You Hide from a Computer? |
14 AUG 2006 |
9 pages |
| Authors:
Ivan Wong; Thomas Meitzler; Euijung Sohn; Kimberly Lane; TACOM RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
|
| Several clutter metrics were evaluated and compared against the probability of detection of ground combat vehicle targets in test scenes created in a natural field environment. This paper presents methods of testing subjects and methods of computing the metrics. Finally, limited results of the initial testing and the comparison of this against the metrics are given, thereby showing the effectiveness of these metrics on this set of targets and on ... |
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| Terahertz Imaging of Subjects With Concealed Weapons |
MAY 2006 |
13 pages |
| Authors:
Jason C. Dickinson; Thoms M. Goyette; Andrew J. Gatesman; Cecil S. Joseph; Zachary G. Root; Robert H. Giles; Jerry Waldman; William E. Nixon; MASSACHUSETTS UNIV LOWELL
|
| In response to the growing interest in developing terahertz imaging systems for concealed weapons detection, the Submillimeter-Wave Technology Laboratory (STL) at the University of Massachusetts Lowell has produced full-body terahertz imagery using coherent active radar measurement techniques. The proof-of-principle results were readily obtained utilizing the compact radar range resources at STL. Two contrasting techniques were used to collect the imagery. Both methods made use of in-house transceivers, consisting of two ... |
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| Terahertz (THZ) Imaging |
MAR 2006 |
53 pages |
| Authors:
Raghuveer Rao; AIR FORCE RESEARCH LAB ROME NY SIGNAL PROCESSING BRANCH
|
| Previously, the problem of Concealed Weapon Detection, CWD, was addressed in the context of detecting weapons concealed under clothing. Infrared and millimeter wave images were considered for the purpose. Infrared detection depends on the concealed weapon's temperature being significantly different from that of its surroundings. Millimeter wave detection relies on reflection from the object of interest. Passive detection is possible in many instances since MMW is present naturally and can ... |
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| Methods for Evaluating Thermal Camouflage |
01 DEC 2005 |
35 pages |
| Authors:
Frode B. Olsen; NORWEGIAN DEFENCE RESEARCH ESTABLISHMENT KJELLER
|
| This paper discusses different methods for formulating specifications for thermal camouflage materials or systems. The discussed methods range from full-scale realistic combat-like military exercises to laboratory measurements of material properties and computer simulations. As an introduction to the discussion, a brief overview of the physical processes governing the temperature of outdoors surfaces is given as well as a basic introduction to the formalism and methods used in thermal imaging systems ... |
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| Cycle Criteria for Detection of Camouflaged Targets |
01 DEC 2005 |
24 pages |
| Authors:
Barbara L. O'Kane; Gary L. Page; David L. Wilson; David J. Bohan; ARMY COMMUNICATIONS-ELECTRONICS RESEARCH DEVELOPMENT AND ENGINEERING CENTER FORT BELVOIR VA
|
| The interplay between sensors and camouflage has long presented a problem for modeling target acquisition performance of human-in-the-loop thermal sensors. For instance, ACQUIRE, a commonly used target acquisition model, is relatively more sensitive to target size than target contrast. The result is that ACQUIRE generally predicts that low contrast targets will be detected at ranges similar to baseline targets. Thus ACQUIRE has had limited success for camouflage evaluation, since it ... |
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| Automated Thermal Camouflage Generation Program Status |
01 DEC 2005 |
45 pages |
| Authors:
David J. Thomas; ARMY TANK-AUTOMOTIVE COMMAND WARREN MI
|
| The art of camouflage pattern generation has been based on heuristic techniques, combining both art and science. The difficulty with these techniques are that pattern must perform well in a variety of different background types and conditions. To develop a camouflage that performs well over a range of backgrounds and conditions one would like a computer technique capable of optimising a camouflage pattern over all these possible combinations. The first ... |
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| Strategies for Defeating Commercial Imagery Systems |
DEC 2005 |
54 pages |
| Authors:
Stephen Latchford; AIR WAR COLL MAXWELL AFB AL CENTER FOR STRATEGY AND TECHNOLOGY
|
| High-quality space-based imagery, once among America's most closely held secrets for force enhancement, is now openly available through commercial providers. The United States faces questions of how to keep this source of valuable intelligence information from its adversaries, and whether it is even possible or desirable to do so. This paper addresses strategies for countering the threat to military operations posed by commercial earth-sensing satellites. The paper emphasizes technical countermeasures, ... |
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| Development of a Vertically Launched Decoy Vehicle |
31 AUG 2005 |
37 pages |
| Authors:
Michael J. Veracka; Alvin Cross; Carlos Figueroa; NAVAL RESEARCH LAB WASHINGTON DC OFF-BOARD COUNTERMEASURES BRANCH
|
| Advanced infrared imaging missiles pose a formidable threat to U.S. Navy ships operating in the littorals. Advanced materials and techniques for accurately placing them will be necessary to counter these threats. This report describes the development of a decoy vehicle compatible with the next generation of naval ships which will have decoy launchers below deck to minimize their radar signature. This vehicle is launched vertically and pitches over to fly ... |
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| FMRI for Functional Localization and Task Difficulty Assessment During Visual Search for Military Vehicles |
03 AUG 2005 |
13 pages |
| Authors:
Thomas Meitzler; Darryl Bryk; Euijung Sohn; Joyce Hirsch; ARMY TANK-AUTOMOTIVE COMMAND WARREN MI
|
| Past and current U.S. Army computational vision models designed to determine the difficulty of visual detection of camouflage for military vehicles are extremely limited in the sense that they do not encompass much of the brain outside the retina and visual cortex, and within those areas, do so to a very limited degree. A method and preliminary experiments to obtain the raw data to construct better and more representative models ... |
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| Military Suppression of Enemy Air Defenses (SEAD): Assessing Future Needs |
11 MAY 2005 |
|
| Authors:
Christopher Bolkcom; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
| Suppression of enemy air defenses (SEAD) has been a central element of projecting military air power for over 50 years. However, several developments suggest that this mission is of growing importance to the Department of Defense (DOD). Some say that the emergence of new technologies and air defenses will increasingly challenge U. S. SEAD efforts. Making budgetary judgments on SEAD programs and processes requires the assessment of complex factors. This ... |
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| Agent-Based Target Detection in 3-Dimensional Environments |
MAR 2005 |
63 pages |
| Authors:
Joaquin S. Correia; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Visual perception modeling is generally weak for game AI and computer generated forces (CGF), or agents, in computer games and military simulations. Several tricks and shortcuts are used in perceptual modeling. The results are, under certain conditions, unrealistic behaviors that negatively effect user immersion in games and call into question the validity of calculations in fine resolution military simulations. By determining what the computer-generated agent sees using methods similar to ... |
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| Concealment of the Warfighter's Equipment Through Enhanced Polymer Technology |
DEC 2004 |
6 pages |
| Authors:
Kevin Frankel; Sonia Sousa; Rick Cowan; Melanie King; INVISTA WILMINGTON DE
|
| One method to modify the Near Infrared (NIR) reflection signature of a base fabric is through the addition of nano and micro particle size additives to the polymer during fiber manufacturing. Different additives produce various effects in both the visual and near infrared spectrum. Work between INVISTA and the U.S. Army Natick Soldier Center has allowed for the development and commercialization of these fibers so that the warfighter's equipment can ... |
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| Analysis of Uncertainties in Infrared Camera Measurements of a Turbofan Engine in an Altitude Test Cell |
MAR 2004 |
179 pages |
| Authors:
Thomas A. Morris; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| This research investigated the uncertainties in measuring the IR signature of a General Electric F110-GE-129 turbofan engine inside an altitude test cell. The requirements for the measurement system include the intensity and radiance of the engine surfaces in three bands of operation, two Medium Wave IR (MWIR) bands and one Long Wave IR (LWIR) band. The altitude test cell provides a venue for measuring the IR signature in simulated altitude ... |
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| Electronic, Optical and Structural Properties of 6.1 Angstrom III-V semiconductor Heterostructures for High-Performance Mid-Infrared Lasers |
DEC 2003 |
29 pages |
| Authors:
Thomas F. Boggess; IOWA UNIV IOWA CITY DIV OF SPONSORED RESEARCH
|
| The goal of this program was to develop new insight into the physics of 6.1-angstrom heterostructures through combined experiment and theoretical efforts. Specifically, time-resolved ultrafast optical and scanning-tunneling microscopy (STM) experimental techniques were used to study the electronic, optical, and structural properties |
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| Use of a Photosimulation Laboratory for Estimating Vehicle Detection Probability and Comparing Detection Metrics |
15 APR 2003 |
11 pages |
| Authors:
Thomas J. Meitzler; David Bednarz; Darryl Bryk; Kimberly Lane; Euijung Sohn; ARMY TANK-AUTOMOTIVE COMMAND WARREN MI
|
| A method is described for using a photosimulation laboratory environment to compare detection metrics and evaluate the effectiveness of camouflage for military vehicles. There are distinct advantages to acquiring images at the field site and then bringing them back to a laboratory environment for observer testing versus taking the subjects out to the field for estimating detection probability. Laboratory testing using field acquired imagery provides a repeatable, secure, and relatively ... |
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| Autophagous Design and Material Options for Forward Deployed Aircraft IR Decoys with Reduced Risk of Foreign Object Damage |
07 MAR 2003 |
14 pages |
| Authors:
James P. Thomas; NAVAL RESEARCH LAB WASHINGTON DC
|
| New infrared (IR) decoys are being developed that will be forward launched from a moving aircraft. Autophagous (self-consuming) materials and components that quickly combust after deployment into harmless debris are considered in this study. The possibility of engine ingestion of an intact IR decoy strongly suggests the use of relatively 'soft' materials that will minimize damage. Based on this and other findings determined in this study, a laminate shell design ... |
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| Optical Characterization of Antimony-Based, Types-I and -II, Multiple Quantum-Well Semiconductor Structures for Mid-Infrared Laser Applications |
MAR 2003 |
75 pages |
| Authors:
Edward G. Ferguson; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| This experiment characterizes antimony-based, multiple quantum-well, types-I and -II, semiconductor samples designed for laser applications. The samples emit light in the 3-5-micron range to exploit an atmospheric transmission window, making them ideal for infrared (IR)-seeking missile countermeasures. Photoluminescence (PL) spectra were collected and yielded bandgap (E(sub g)) dependence-on-temperature relationships. The type-I sample was found to follow the Varshni equation, while the type-II samples showed a rise with temperature in a ... |
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| Case Study of the Development of the Target Acquisition Designation/ Pilot Night Vision System |
DEC 2002 |
115 pages |
| Authors:
Jerome A. Oelrich; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This thesis is a case study of the extent to which a series of factors influenced development of the U.S. Army Target Acquisition Designation System/Pilot Night Vision System (TADS/PNVS). This study is one of a series being prepared under an ongoing research effort sponsored by Headquarters U.S. Army Material Command (AMC). These studies will look at various weapon systems that participated in Operation Desert Storm (ODS) and will study the ... |
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| Face Recognition Using Infrared Imaging |
DEC 2002 |
|
| Authors:
Diogo C. Pereira; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This study investigated a (IR) face recognition system using an uncooled IR camera. A computer-based image collection set-up was designed and used to create a small database of 420 facial images, from 14 volunteers. Manual and automated facial image cropping routines were implemented. Two linear approaches (PCA and LDA) for the dataset dimension reduction and classification were implemented and their resulting classification performances compared. Results show that the best PCA-based ... |
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| CAMEVAL-2002 Land Forces Signature Reduction Trial: Ground Truthing, Calibration and Multi-Sensor Data Acquisition for DRDC Experiments |
NOV 2002 |
|
| Authors:
Jeff Secker; Ryan A. English; Maureen Yeremy; Josee Levesque; DEFENCE RESEARCH AND DEVELOPMENT CANADAOTTAWA (ONTARIO)
|
| The CAMEVAL-2002 Land Forces Signature Reduction (LFSR) trial was conducted at the Canadian Forces Base (CFB) Petawawa in June 2002. For the LFSR trial, 27 military vehicles (primarily Leopard C2 tanks and Coyote reconnaissance vehicles) were deployed under forest canopy, along tree lines and in open field. A subset of the Leopards and Coyotes was deployed with a trial camouflage screen, another subset was covered with the current in-service camouflage, ... |
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| Web Interface for Modeling Fog Oil Dispersion During Training |
AUG 2002 |
25 pages |
| Authors:
Robert C. Lozar; ENGINEER RESEARCH AND DEVELOPMENT CENTER CHAMPAIGN IL CONSTRUCTION ENGINEERING RESEARCH LAB
|
| Predicting the dispersion of military camouflage training materials- Smokes and Obscurants (SO)-is a rapidly improving science. The Defense Threat Reduction Agency (DTRA) developed the Hazard Prediction and Assessment Capability (HPAC), a software package that allows the modeling of the dispersion of several potentially detrimental materials. ERDC/CERL characterized the most commonly used SO material, fog oil in HPAC terminology, to predict the SO dispersion characteristics in various training scenarios that might ... |
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| Mechanisms of Military Coatings Degradation: Color and Gloss Performance Evaluation |
FEB 2002 |
34 pages |
| Authors:
William S. Lum; Philip A. Patterson; John A. Escarsega; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| The Weapons and Materials Research Directorate of the U.S. Army Research Laboratory is leading a research study on military coatings degradation. The goal of this project is to provide detailed analysis of coating system failure mechanisms and where possible provide predictive capability to enable service life estimates for these systems. This interim report focuses on some of the initial durability data gathered on the coatings' exposures in Florida, Arizona, and ... |
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| An Experimental and Numerical Study of Infrared (IR) Emission from a Porous Radiant Burner |
May-2001 |
|
| Authors:
Farid C Christo; Lakshmanan V Krishnamoorthy; DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION VICTORIA (AUSTRALIA) AERONAUTICAL AND MARITIME RESEARCH LAB
|
| An experimental analysis and computational modelling of thermal radiation from an INCONEL601 wire-mesh porous burner has been conducted. It has been found that within a bandwidth between 2 microns and 20 microns, the infrared radiation in the 2-5 microns waveband is the dominant band. Optimal operating conditions, as determined by the surface temperature and radiant intensity, are a function of the equivalence ratio and the firing rate. The location of ... |
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| Monocular Passive Ranging Sensitivity Analysis and Error Minimization |
25 AUG 2000 |
4 pages |
| Authors:
Gordon Scriven; Nahum Gat; Robert Lyons; OPTO-KNOWLEGE SYSTEMS INC TORRANCE CA
|
| Monocular Passive Ranging (MPR) may allow accurate target range estimation even when active measurements or multiple views are not possible. Due to the inherent nature of the MPR solution. the uncertainties may degrade the utility of the range estimate. Proper spectral band selection is essential for error minimization. The study goes beyond the traditional CO2 red spike band for MPR. Featured in the current analysis are the following absorption bands: ... |
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| Obscurants for Infrared Countermeasures II |
24 MAR 2000 |
31 pages |
| Authors:
J. C. Owrutsky; H. H. Nelson; H. D. Ladouceur; A. P. Baronavski; NAVAL RESEARCH LAB WASHINGTON DC
|
| This report describes results of a search for a suitable mid-infrared obscurant. The goal is to identify a material with sufficient extinction, equivalent or superior to brass, which has been demonstrated to provide high extinction but without its toxicity and environmental effects. More than ten materials were initially selected as promising based on results from previous studies or from the bulk spectra or optical constants. These ... |
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| Tunable MID-IR Optical Parametric Oscillator Using Periodically Poled Rubidium Titanyl Arsenate |
MAR 2000 |
59 pages |
| Authors:
Frank J. Glavic; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH SCHOOL OF ENGINEERING
|
| Tunable sources of coherent radiation are needed for a variety of military and commercial applications, including infrared countermeasures and atmospheric remote sensing. This research investigates a tunable mid-infrared coherent source using periodically-poled rubidium titanyl arsenate (PPRTA) as a quasi-phase matched (QPM) optical parametric oscillator (OPO). The advantages of PPRTA over periodically poled lithium niobate (PPLN) are presented. Quasi-phase matching and periodic poling theory are discussed, along with some important historical ... |
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| Applying the Law of Comparative Judement to Target Signature Evaluation |
MAR 2000 |
8 pages |
| Authors:
James R. McManamey; ARMY COMMUNICATIONS-ELECTRONICS COMMANDFORT BELVOIR VA NIGHT VISION AND ELECTRONICS SENSORS DIRECTORATE
|
| The Law of Comparative Judgement (LCJ) is a psychophysical tool that can be used to scale complex phenomena that lack easily identified physical parameters. Target signatures represent such phenomena. In a demonstration exercise, a search difficulty" value was found using the LCJ. These LCJ scale values were compared to search times and probabilities of detection from a search experiment run in the Netherlands. The scale values were not linearly related ... |
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| Diode-pumped Tunable 3 Micron Laser Sources |
21 FEB 2000 |
16 pages |
| Authors:
Arlete Cassanho; Hans P. Jenssen; AC MATERIALS INC WINTER PARK FL
|
| The purpose of this work was to evaluate two laser host materials doped with Tm and Dy as potential 3 micrometers, diode pumped lasers. BaY2F8 single crystals were grown and spectroscopy identified efficient Tm to Dy energy transfer. The Dy stimulated emission cross section was measured to be comparable to other IR lasers. A new crystalline structure, NaYF4 was also studied. In this crystal it was found in ... |
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| A Continuous Wave Raman Laser to Access a Broad Spectral Regime |
JAN 2000 |
25 pages |
| Authors:
Rand Swanson; ADVR INC BOZEMAN MT
|
| The purpose of this work was to explore the continuous wave (cw) Raman laser for generating high-power laser radiation in the Infrared (IR) spectral regime. This was done by numerically modeling cw Raman lasers. The numerical models were compared with results from recent experiments to confirm their accuracy. A survey was conducted to identify necessary components for this technology, including mirrors and pump lasers. Results indicate ... |
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| Development of an Electronically-Controlled Smoke Pot Aerosol Dispenser |
2000 |
15 pages |
| Authors:
Daniel J. Hartman; Noel Gonzalez; William G. Rouse; Raymond Malecki; EDGEWOOD CHEMICAL BIOLOGICAL CENTER ABERDEEN PROVING GROUND MD
|
| Engineering Technology, Inc. (ETI) and the U.S. Army Edgewood Chemical and Biological Center (ECBC) have completed the technology application demonstration of a general-purpose Smoke Pot having an electronic controller. The smoke pot employs propellant-based aerosol dissemination technology to expel obscurant materials. A patent is currently pending for this dissemination technology. The smoke screen produced by this device is effective in the visual (VIS), infrared (IR) or millimeter (MM) radar spectrum. ... |
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| AIRSAM: A Tool for Assessing Airborne Infrared Countermeasures |
2000 |
8 pages |
| Authors:
David Forrai; James Maier; SVERDRUP TECHNOLOGY INC BEAVERCREEK OH
|
| Intelligence data is a key component to command and control (C2) decisions. Often intelligence analysts have to provide commanders with timely data in order for them to execute their missions. The Advanced Infrared Countermeasures Assessment Model (AIRSAM) is a tool used by analysts at the National Air Intelligence Center (NAIC) to predict the most likely infrared countermeasure (IRCM) response from aircraft when engaged by a threat using electro-optic (EO) and ... |
|
| A Continuous Wave Raman Laser to Access a Broad Spectral Regime |
14 DEC 1999 |
23 pages |
| Authors:
Rand Swanson; ADVR INC BOZEMAN MT
|
| The purpose of this work was to explore the continuous wave (cw) Raman laser for generating high-power laser radiation in the Infra-Red (IR) spectral regime. This was done by numerically modeling cw Raman lasers. The numerical models were compared with results from recent experiments to confirm their accuracy. A survey was conducted to identify necessary components for this technology, including mirrors and pump lasers. Results indicate ... |
|
| Simulations to Predict the Countermeasure Effectiveness of Using Pyrophoric Type Packets Deployed from TALD Aircraft |
SEP 1999 |
116 pages |
| Authors:
Mihail Demestihas; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Manned aircraft that are intended for surveillance or to complete a bombing mission will very likely be engaged by surface to-air-missiles having guidance systems based on infrared (IR) technology. The objective of this study was to characterize via simulation the amount of "cover" that can be obtained by dropping from a pre-launched, unmanned tactical air launched decoy (TALD) a sequence of pyrophoric materials to create an ... |
|
| DEPSCOR-95: Development of Nonlinear Optical Materials for Optical Parametric Oscillator and Frequency Conversion Applications in the Near- and Mid-Infrared |
31 AUG 1999 |
72 pages |
| Authors:
Larry E. Halliburton; Nancy C. Giles; Thomas H. Myers; WEST VIRGINIA UNIV MORGANTOWN DEPT OF PHYSICS
|
| Point defects and their associated optical absorption bands often limit the performance of tunable laser sources (i.e., optical parametric oscillators) operating in the near and mid-infrared. Near-edge absorption in ZnGeP2 crystals and gray tracks in KTP crystals are examples of device limiting phenomena in commercially available materials, and both of these effects result from uncontrolled point defects introduced into the crystals during growth. This project ... |
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| Computer Modeling of Jamming Effects on Infrared Missiles |
JUN 1999 |
56 pages |
| Authors:
Troy M. Johnson; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Development of effective countermeasures for use against infrared (IR) missiles is hindered by the difficulty inherent in testing tactical missiles. The designers of such a countermeasure must devise a means of reproducing missile attitude after the test flight to allow for further analysis. This thesis describes an Inertial Measurement Unit (IMU) compact enough to be mounted on board a 4.5 inch missile. The IMU sensing elements are three quartz rate ... |
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| Radarometer Sensor - Simultaneous Active and Passive Imaging Usin a Common Antenna |
MAY 1999 |
23 pages |
| Authors:
Darryl G. Huddleston; James C. Savage; Bryce M. Sundstrom; Byron W. Belcher; Doc Ewen; MILLITECH CORP SOUTH DEERFIELD MA
|
| Report Developed Under SBlR Contract. The ability to obtain simultaneous active and passive millimeter wave images using a common antenna has numerous DOD as well as commercial applications. Radiometric and radar images are not new, nor are simultaneous passive and active images of a common scene. The feature, which is unique to the radarometer concept, is simultaneous use of the same antenna by a radar ... |
|
| Anti-Ballistic Missile Laser Predictive Avoidance of Satellites: Theory and Software for Real-Time Processing and Deconfliction of Satellite Ephemerides With a Moving Platform Laser, Book 1 |
MAR 1999 |
219 pages |
| Authors:
David J. Vloedman; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH
|
| The Anti-Ballistic missile Laser (ABL) Project is committed to defense against attack from enemy-launched Theater Ballistic Missiles using an airborne laser platform to disable an enemy missile in the boost phase of launch. Wielding a laser of this power and scope requires that no collateral damage be caused by laser energy which may escape from the theater of engagement. The most likely track of such a laser would pose a ... |
|
| Anti-Ballistic Missile Laser Predictive Avoidance of Satellites: Theory and Software for Real- Time Processing and Deconfliction of Satellite Ephemerides With a Moving Platform Laser, Book 2 |
MAR 1999 |
198 pages |
| Authors:
David J. Vloedman; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH
|
| The Anti-Ballistic missile Laser (ABL) project is committed to defense against attack from enemy-launched missiles using an airborne laser platform. Wielding a laser of this scope requires that collateral satellites be protected from accidental illumination during operational use. The Predictive Avoidance algorithm is designed to predict the path of a given laser firing sequence, and perform real-time deconfliction with the ephemerides of a given set of satellites. This thesis establishes ... |
|
| Concealed Weapon Detection Program |
DEC 1998 |
26 pages |
| Authors:
Dana R. Rauscher; Michael P. Hartnett; DECISION SCIENCE APPLICATIONS INC ROME NY
|
| This report discusses various Concealed Weapon Detection (CWD) efforts and technologies which have evolved over the past few years. Information provided in this final technical report summarized programs being pursued based on National Institute of Justice (NIJ) and DARPA Grants and contract awards to move toward safe and dependable sensors to address the concealed weapon problem. These weapons are a major threat to both military and law enforcement personnel. The ... |
|
| Optical Radiation: Susceptibility and Countermeasures |
DEC 1998 |
67 pages |
| Authors:
Michael Veal; Norm Barsalou; ANALYTIC SCIENCES CORP SAN ANTONIO TX
|
| The report is organized into sections, with each section corresponding to a main Statement of Work heading and serving as a separate stand-alone document. The main objective of the report is to provide a useful synopsis of research projects or activities that are extensive enough to warrant a name. Accordingly, this report is not a comprehensive listing or journal of all of the activities performed ... |
|
| Low Signature Tent Structures |
DEC 1998 |
6 pages |
| Authors:
Randy Cox; TENSION SYSTEMS LLC MADISON AL
|
| Tension Systems has developed structures for lightweight tents that can provide the enclosure of very large volumes with low structural mass, and exhibiting low multispectral signatures. We believe these are the first tent designs in which low signature is derived from fundamental design rather than pigments and camouflage nets. The design is basically a double skinned aspensional structure in which the inner and outer skins contribute integrally to the rigidity ... |
|
| Methodology for the Analysis of Obscurant Attenuation Effects on Seeker Target Acquisition Performance Using Modeling and Simulation |
AUG 1998 |
59 pages |
| Authors:
Joseph A. Andrese; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| A methodology was developed which uses modeling and simulation to obtain data for analyzing smoke/obscurant attenuation effects on sensor/seeker target acquisition performance. A computer routine written in Formula Translator (FORTRAN) 77 code integrates smoke/obscurant clouds generated by the combined obscuration model for battlefield-induced contaminants (COMBIC) with seeker performance from a system hardware-in-the-loop simulation. The methodology can be applied to other system models and simulations. The ... |
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| Modifications to the Tube-Launched, Optically Tracked, Wire-Command Missile Launcher for the Bradley Fighting Vehicle System |
25 JUN 1998 |
33 pages |
| Authors:
INSPECTOR GENERAL DEPT OF DEFENSE ARLINGTON VA
|
| This report is the first in a series of reports on the consolidation on of tactical missile maintenance work loads at Letterkenny Army Depot. This audit was performed in response to a request by the Deputy Under Secretary of Defense (Logistics). As part of the audit, we reviewed the work loads associated with depot-level maintenance and repairs and depot-level modifications performed for the Tube-Launched, Optically Tracked, Wire-Command ... |
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| Dark Coating with Low Solar Infrared Absorbing Properties |
12 MAY 1998 |
|
| Authors:
Robert F. Supcoe; Melvin Greenberg; DEPARTMENT OF THE NAVY WASHINGTON DC
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| A stable dark or moderately dark opaque exterior coating constituted of pigmentations and binder materials having low solar absorbing properties capable of visual and infrared camouflage. The pigmentations and binder materials may be selected for the proper optical qualities by previous testing before mixture and application as a coating. |
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| Electronic Warfare: DoD Should Select Most Cost-Effective Infrared Countermeasure System |
APR 98 |
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| Authors:
GENERAL ACCOUNTING OFFICE WASHINGTON DC NATIONAL SECURITY AND INTERNATIONAL AFFAIRS DIV
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| The Army is developing the Advanced Threat Infrared Countermeasure (ATIRCM) System to protect U.S. aircraft from infrared guided missiles, while the U.S. Special Operations Command (SOCOM) intends to procure the Directional Infrared Countermeasure (DIRCM) System, which it is jointly developing with the United Kingdom, to satisfy the same requirement We reviewed these programs to determine whether the Department of Defense (DOD) is justified in acquiring both systems. We are issuing ... |
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Optical Countermeasures
