| PbTe Flash Evaporation on Si Substrates for Heterojunction Infrared Detectors |
JAN 2002 |
6 pages |
| Authors:
Sonia Guimaraes; Sabrina da Silva; Joao de Assis; INSTITUTO DE AERONAUTICA E ESPACO SAO JOSE DOS CAMPOS (BRAZIL)
|
 | This work is to present results of flash evaporation of PbTe directly over single crystals p-type Si substrates, in order to produce heterojunction infrared detectors (HIRD), working at 4.3 micrometers IR wavelength. The evaporation was performed on modified JEOL vacuum equipment, model JEE4B (a), working with vacuum pressure around 10(exp -5) torr, using diffusion pump. The HIRDs produced with this method presented the same detectivity (D*) values of HIRDs made ... |
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| High-Performance InAs/GaAs Quantum Dots Infrared Photodetector With/Without Al(0.2)Ga(0.8)As Blocking Layers |
JAN 2002 |
6 pages |
| Authors:
Zhengmao Ye; Joe C. Campbell; Zhonghui Chen; O. Baklenov; E. T. Kim; TEXAS UNIV AT AUSTIN MICROELECTRONICS RESEARCH CENTER
|
| InAs/AlGaAs quantum dot infrared photodetectors based on bound-to-bound intraband transitions in undoped InAs quantum dots are reported. AlGaAs blocking layers were employed to achieve low dark current. The photoresponse peaked at 6.2 micrometers. At 77 K and 4.7 V bias the responsivity was 14 mA/W and the detectivity, D(*), was 10(exp 10) cm Hz (sup 1/2)/W. |
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| Support for Rapid Environmental Assessment Using Airborne Lidar Technology |
Jan-2002 |
9 pages |
| Authors:
W J Lillycrop; J L Irish; R W Pope; CORP OF ENGINEERS MOBILE AL JOINT AIRBORNE LIDAR BATHYMETRY TECHNICAL CENTER OF EXPERTISE
|
| In April 2000, the US Army/Navy JALBTCX participated in the NATO-led Peace Support Operation exercise LINKED SEAS 2000 (LS00) in Portugal. A main focus for the LS00 exercise was to evaluate a variety of sensors and tools for rapid environmental assessment. This concept is founded on the use of existing technologies from a variety of platforms including ships, aircraft, and satellites to fully and rapidly quantify the environment in areas ... |
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| Design and Commissioning of a Hi-Resolution Visible/Near-IR Echelle Spectrograph (HI-VIS) for the AEOS Telescope |
2002 |
11 pages |
| Authors:
Robert J. Thornton; Jeffrey R. Kuhn; Klaus W. Hodapp; Donald L. Mickey; Alan N. Stockton; HAWAII UNIV HONOLULU INST FOR ASTRONOMY
|
| The Institute for Astronomy has developed and recently installed a high-resolution cross-dispersed echelle spectrograph for use at one of the coude foci of the AEOS 3.7-meter telescope, operated by the Air Force Space Command atop Mt. Haleakala on the island of Maui. The spectrograph features an optical arm for the wavelength range 0.5-1.0 urn and an infrared arm for the range 1.0 - 2.5 microns We review the spectrograph design ... |
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| Time-Gated Topographic LIDAR Scene Simulation |
2002 |
13 pages |
| Authors:
Scott D. Brown; Daniel D. Blevins; John R. Schott; ROCHESTER INST OF TECH NY CHESTER F CARLSON CENTER FOR IMAGING SCIENCE
|
| The Digital Imaging and Remote Sensing Image Generation (DIRSIG) model has been developed at the Rochester Institute of Technology (RIT) for over a decade. The model is an established, first-principles based scene simulation tool that has been focused on passive multi- and hyper-spectral sensing from the visible to long wave infrared (0.4 to 14 mum). Leveraging photon mapping techniques utilized by the computer graphics community, a first-principles based elastic Light ... |
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| Use of a Miniature Infrared COTS Sensor in Several Military Applications |
2002 |
10 pages |
| Authors:
Joseph Kostrzewa; William Meyer; William Terre; Stan Laband; Gwendolyn Newsome; INDIGO SYSTEMS SANTA BARBARA CA
|
| The proliferation of small infrared cameras in high-volume commercial applications (e.g. fire fighting, law-enforcement, and automotive) presents a tremendous opportunity for truly low-cost military micro-sensors. Indigo Systems Corporation's UL3 Omega(trademark) camera is a commercial off-the-shelf (COTS) thermal imager that offers ultra-small size (3.5 cubic inch), light weight (102g), and low power (< 1.3 W). It employs a 164x120 microbolometer focal plane array (FPA) and is currently entering full-scale production. Furthermore, ... |
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| Overview of the UL3 Omega(Trademark) Uncooled Camera and its Applications |
2002 |
8 pages |
| Authors:
Joseph Kostrzewa; William Meyer; William Terre; Doug Kraemer; George Poe; Vu Nguyen; Mark Brown; Gwendolyn Newsome; INDIGO SYSTEMS SANTA BARBARA CA
|
| When it was first introduced two years ago, Indigo Systems Corporation's UL3 Alpha(trademark), a miniature uncooled infrared camera, set new standards for ultra-low size, weight and power within the thermal imaging industry. Now Omega(trademark), the next generation in Indigo's UL3 product line, takes advantage of novel algorithms and packaging concepts to further reduce size, weight, and power while still improving performance. These qualities make Omega(tm) an ideal candidate for many ... |
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| A1GaAsSb-InGaAsSb-GaSb Epitaxial Heterostructures for Uncooled Infrared Detectors |
2002 |
10 pages |
| Authors:
Oleg V. Sulima; Sarbajit Datta; Jeff A. Cox; Michael G. Mauk; Sir B. Rafol; DELAWARE UNIV NEWARK DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
|
| Lattice matched n-type AlGaAsSb-InGaAsSb-GaSb heterostructures for uncooled infrared detectors including separate absorption and multiplication avalanche photodiodes (SAM-APD) as well as low-voltage InGaAsSb APDs were grown using inexpensive liquid phase epitaxy. Formation of the pn-junction was performed through difflision of Zn from the vapor phase. Responsivity at lamba =2 micronmeter as high as 3.5 A/W was achieved in InGaAsSb APD biased at 8 V with the avalanche multiplication starting at 6 ... |
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| GOALI: Systems Integration of Uncooled YBaCuO IR Detectors |
30 NOV 2001 |
46 pages |
| Authors:
Donald P. Butler; Zeynep Celik-Butler; SOUTHERN METHODIST UNIV DALLAS TX DEPTOF ELECTRICAL ENGINEERING
|
| Infrared imaging has demonstrated itself as a vital aspect of modern weapons Systems. Infrared (IR) imaging has the potential to play an equally important role in commercial applications in medicine and transportation. Automobiles equipped with infrared imaging capabilities have been envisioned for the near future. This technology has the potential to tremendously improve personal safety by enabling good vision at night and under adverse weather conditions. Infrared imagers in automobiles ... |
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| A Research Center in the Scientific Foundation of Image Representation and Analysis (CIS) |
30 NOV 2001 |
18 pages |
| Authors:
Michael I. Miller; JOHNS HOPKINS UNIV BALTIMORE MD G W C WHITING SCHOOL OF ENGINEERING
|
| Following is the Center for Imaging Science (CIS) final report for 1999-2001 on the development of the fundamental underpinnings for the representation and understanding of complex scenes. CIS is composed of researchers from MIT, Ohio State, Smith-Kettlewell Eye Research Institute, University of Illinois, University of Texas at Austin, University of Texas at El Paso, Washington University and Yale. Reflecting the broad nature of imaging science, the research in at CIS ... |
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| The Effect of a Monocular Helmet-Mounted Display on Aircrew Health: A cohort Study of Apache AH MK1 Pilots Initial Report |
NOV 2001 |
81 pages |
| Authors:
Keith L. Hiatt; Malcolm G. Braithwaite; John S. Crowley; Clarence E. Rash; Corina VAN DE Pol; ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL
|
| A collaborative occupational health study has been undertaken by Headquarters Director Army Aviation, Middle Wallop, UK, and the U.S. Army Aeromedical Research Laboratory, Fort Rucker, Alabama, to determine if the use of the monocular helmet-mounted display in the Apache AH MK1 attack helicopter has any long-term (10-year) effect on visual performance. This paper describes the protocol, methodology, development and initial execution phase of this study. The test methodology consists primarily ... |
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| Pre-Flight Physics-Based Infrared Synthetic Scene Simulation for Army Aviation Mission Enhancement |
NOV 2001 |
14 pages |
| Authors:
George G. Koenig; Robert E. Davis; Steve Milton; ENGINEER RESEARCH AND DEVELOPMENT CENTER HANOVER NH COLD REGIONS RESEARCH AND ENGINEERING LAB
|
| Aviators rely heavily on Forward Looking Infrared (FLIR) imagery. Weather impacted terrain and targets significantly impedes an aircrew's ability to navigate and to rapidly and accurately detect and identify targets. Weather degradation increases target acquisition and identification times, subjecting the aircraft and crew to increased exposure to enemy threats and counterattacks, ultimately decreasing system lethality and survivability. The U.S. Army Engineer Research and Development Center (ERDC), the Air Force Research ... |
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| Preliminary Evaluation of Preoperative Chemohormonotherapy-Induced Reduction of the Functional Infrared Imaging Score in Patients with Locally Advanced Breast Cancer |
25 OCT 2001 |
|
| Authors:
John R. Keyserlingk; Mariam Yeassa; Paul Ahlgren; Normand Belliveau; SAINT MARYS HOSPITAL MONTREAL (QUEBEC)VILLE MARIE ONCOLOGY CENTER
|
 | 20 successive patients who received preoperative chemohormonotherapy (PCT) for locally advanced breast cancer underwent high resolution digital Infrared imaging (IR) both before and after PTC and prior to surgery. The images were graded using a flew scale. Initial pre-PCT IR imaging revealed obvious and often dramatic angiogenesis- related findings in all our patients. Following PCT there was a significant decrease in both the IR score and in the clinical size ... |
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| Modalities and Clinical Applications of Dynamic Infrared Imaging |
25 OCT 2001 |
|
| Authors:
Michael Anbar; STATE UNIV OF NEW YORK AT BUFFALO SCHOOL OF MEDICINE AND BIOMEDICAL SCIENCES
|
| Dynamic infrared imaging (DIRI), the most effective modality of dynamic area telethermometry (DAT), involves the acquisition of hundreds to thousands of consecutive thermal images, deriving information from the modulation of temperature and of thermal spatial distribution of small subareas. Four groups of clinical applications of dynamic infrared imaging are reviewed from the standpoint of their data processing following FFT analysis of temperature modulation and modulation of perfusion of the cutaneous ... |
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| Infrared Signatures of the Muzzle Flash of a 120 mm Tank Gun and Their Implications for the Kinetic Energy Active Protection System (KEAPS) |
OCT 2001 |
26 pages |
| Authors:
Arnold Goldberg; ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE
|
| This report examines the results of infrared (IR) imaging of the firing of M865 kinetic energy (KE) rounds from a 120-mm tank gun in support of the Kinetic Energy Active Protection System (KEAPS) development. The primary objective was to determine the extent in time, space, and intensity of the muzzle flash in both the 3 to 5 micrometers (medium-wavelength IR or MWIR) and 8 to 12 micrometers (long-wavelength IR or ... |
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| Fourier Transform Infrared Analysis of Combustion Gases |
OCT 2001 |
27 pages |
| Authors:
Louise C. Speitel; DEPARTMENT OF TRANSPORTATION WASHINGTONDC
|
| The Federal Aviation Administration (FAA) has developed a unique extractive Fourier Transform Infrared (FTIR) system to analyze rapidly changing moist fire gas concentrations as a function of time. The system was designed to eliminate numerous errors generated by state-of-the-art FTIR systems for fire gas analysis. In addition, the path length, cell volume, sample flow rate, and system temperature were optimized to provide a rapid response and a sufficient dynamic range ... |
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| Visual Issues Survey of AH-64 Apache Aviators (Year 2000) |
OCT 2001 |
114 pages |
| Authors:
C. Rash; C. Suggs; J. Mora; C. van da Pol; B. Reynolds; J. Crowley; ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL
|
| A web-based survey was conducted investigating AH-64 Apache pilot experience with the Integrated Helmet Display Sighting System (IHADSS). A total of 216 respondents provided responses in the following areas: visual complaints, helmet fit, and acoustics. Data indicated that 92% of respondents reported at least one visual complaint either during or after IHADSS flight. Additional findings include: no association between eye preference and frequency of complaints, an increase in frequency of ... |
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| Evaluation of Spatial Resolution in the Phase II Microvision, Inc. Aircrew Integrated Helmet System HGU-56/P Scanning Laser Display |
OCT 2001 |
22 pages |
| Authors:
Thomas H. Harding; Howard H. Beasley; John S. Martin; Clarence E. Rash; ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL
|
| The final Phase II version of the Microvision, Inc., Aircrew Integrated Helmet System (AIHS) HGU-56/P scanning laser display was evaluated for spatial resolution performance. The data reported herein show an improvement in the modulation transfer function (MTF) over the Phase I system. The following modulation values, which meet the RAH-66 Comanche specifications, are: 0.10 horizontal MTF and 0.24 vertical MTF. |
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| Ethanol Detection Strategy with Multiple Digital Filtering of Passive FT-IR Interferograms |
SEP 2001 |
37 pages |
| Authors:
Patrick O. Idwasi; Gary W. Small; Roger J. Combs; Robert B. Knapp; Robert T. Kroutil; OHIO UNIV ATHENS DEPT OF CHEMISTRY
|
| Digital filtering methods are evaluated for automated detection of ethanol using passive Fourier transform infrared (FT-IR) data collected during laboratory and open-air experiments. In applications where ethanol signals are overlapped by spectral interference signals (e.g., ammonia and acetone), the use of multiple digital filters is found to improve the sensitivity of the vapor analyte detection. The detection strategy applies bandpass digital filters to short interferogram segments that are acquired from ... |
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| The NPS Virtual Thermal Image Processing Model |
SEP 2001 |
|
| Authors:
Yucel Lenter; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| A new virtual thermal image-processing model that has been developed at the Naval Postgraduate School is introduced in this thesis. This visualization program is based on an earlier work, the Visibility MRTD model, which is focused on predicting the minimum resolvable temperature difference (MRTD). The MRTD is a standard performance measure for forward-looking infrared (FLIR) imaging systems. It takes into account thermal imaging system modeling concerns, such as modulation transfer ... |
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| Measurements and Modeling Enhancements for the NPS Minimum Resolvable Temperature Difference Model, VISMODII |
SEP 2001 |
194 pages |
| Authors:
Mustafa Celik; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Minimum Resolvable Temperature Difference (MRTD) measurement has long been used to describe the performance of thermal imaging systems Computer models such as U,S Army's FLIR92, that were developed to predict the MRTD, were reported to have deficiencies in dealing with sampling and aliasing effects, The models also include assumptions regarding the observer recognition process and therefore cannot predict the MRTD of an imager that incorporates an "objective" automatic target recognition ... |
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| Mid-Wave Infrared Camera for High Speed Hyperspectral Imaging |
SEP 2001 |
4 pages |
| Authors:
Derek Sabatke; Eustace Dereniak; John Garcia; ARIZONA UNIV TUCSON
|
| The MWIR imaging system acquired under the DURIP grant was incorporated into a rotating compensator imaging polarimeter. In such systems, several images of the target scene are captured through a retarder and analyzer, with the retarder rotated to a different orientation for each image. With each retarder position, the system is sensitive to a different polarization state at the input. By collecting data with the retarder in several positions, the ... |
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| Advanced Electro-Optical Space-Based Systems for Missile Surveillance |
SEP 2001 |
32 pages |
| Authors:
David G. Lawrie; Terrence S. Lomheim; AEROSPACE CORP EL SEGUNDO CA ENGINEERING AND TECHNOLOGY GROUP
|
| This report describes an analysis/simulation methodology used to assess a nominal space-based infrared surveillance architect against a Theater Missile Warning (TMW) mission for two potential theatres of operation. System performance is derived for three generic infrared scanning sensor designs (which were analyzed in parallel for sensitivity, subsystem definition, mass, and power) and parameterized against the potential variations and uncertainties in scene background structure which produce clutter. The results provide insight ... |
|
| Electro-Optical Devices: RF/Optical and IR Systems |
31 AUG 2001 |
20 pages |
| Authors:
Richard M. Osgood Jr.; COLUMBIA UNIV NEW YORK
|
| Instrumentation is requested for probing the surface morphology and composition of electronic/optical materials with Air Force applications. This instrumentation is needed for development of advanced materials processing methods for new RF/optical and infrared devices. The Air Force needs for such devices are in 1) optically controlled phased array radar or in optical transmission of RF signals and 2) mid-IR countermeasure systems. The requested items fall into two categories: instrumentation for ... |
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| An Application of Statistics to Algorithm Development in Image Analysis |
AUG 2001 |
25 pages |
| Authors:
Barry Bodt; Philip David; David Hillis; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| We gathered and processed infrared (IR) images taken by a quantum well infrared photodetector (QWIP) camera to support the development of an algorithm for airborne target detection. This report addresses the statistical aspects of this effort. Digitized images consisted of background clutter alone and background clutter with a small aircraft target. We used a template-matching technique to detect the small aircraft amidst the background clutter. We propose a reasonable statistic ... |
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| Thermal Pixel Array Characterization for Thermal Imager Test Set Applications |
AUG 2001 |
8 pages |
| Authors:
Ike Bendall; Ted Michno; Don Williams; Matthew Holck; Richard Bates; Jose M. Lopez-Alonso; Robert J. Giannaris; Gordon Perkins; H. R. Marlin; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
|
| An array of thermal emitters has been developed for use in a portable test set to enable field testing of low-performance infrared imaging systems and seekers. It is not known if this technology can be used to evaluate the performance of state-of-the-art thermal imagers. This paper describes the preliminary measurements of thermal pixel array (TPA) performance. The radiant output of TPA was measured as a function of pattern size and ... |
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| A Passive Ranging Technique for Objects within the Marine Surface Layer |
AUG 2001 |
5 pages |
| Authors:
Stephen Doss-Hammel; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
|
| Infrared Search and Track (IRST) systems are important to the surface Navy for the detection of low-flying missile threats. Infrared signals propagating within the marine atmospheric surface layer are frequently distorted by strong vertical fluxes. One particular distortion that occurs commonly is the sub-refractive mirage. During sub-refractive mirage conditions, an imaging sensor or camera will record two distinct images of a single point source. A sub-refractive mirage image can be ... |
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| A Real-Time Infrared Scene Simulator in CMOS/SOI MEMS |
AUG 2001 |
4 pages |
| Authors:
Jeremy D. Popp; Bruce Offord; Richard Bates; H. R. Marlin; Chris Hutchens; Derek Huang; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
|
| A 64 x 128 real-time infrared (RTIR) complementary metal-oxide semiconductor (CMOS)/silicon-on-insulator (SOI) scene generation integrated circuit (IC) is described. The RTIR IC offers real-time dynamic thermal scene generation. This system is a mixed-mode design, with analog scene information written and stored into a thermal pixel array. The design uses micro- electromechanical sensors (MEMS) in conjunction with SSC San Diego's 0.8- micrometer CMOS/SOI process to develop a RTIR IC scene generator. ... |
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| Short Term Innovative Research on Sensors on Flexible Substrates |
30 JUL 2001 |
10 pages |
| Authors:
Donald P. Butler; Zeynep Celik-Butler; SOUTHERN METHODIST UNIV DALLAS TX DEPTOF ELECTRICAL ENGINEERING
|
| This investigation concerns the development of microsensors sensors on flexible substrates such as Kapton (pyromellitic dianhydride and 4,4' diaminodphenyl ether). Microbolometers have been used as the test bed for microsensor development. The results on this investigation will form a basis for the production of other micromachined sensors such as pressure/strain sensors, "hair-like" touch and flow sensors, and accelerometers on flexible substrates. Flexible substrates can serve as the basis of a ... |
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| Antenna-Coupled Infrared Sensors: Next-Generation Uncooled IR Focal Planes |
23 JUL 2001 |
19 pages |
| Authors:
Glenn D. Boreman; UNIVERSITY OF CENTRAL FLORIDA ORLANDO SCHOOL OF OPTICS/CREOL
|
| We report on recent advances on a completely new type of uncooled IR sensor technology, which uses ultrasmall metallic antennas to capture the radiation. By electronically changing the 30-THz current-wave distribution on the antenna structure, the polarization and wavelength responses of the IR sensor can be changed dynamically in response to a small (100 mV) control voltage. The operational advantages to seeker systems are that enhanced target discrimination is possible ... |
|
| Surface Engineering for Compliant Epitaxy |
20 JUL 2001 |
17 pages |
| Authors:
K. C. Hsieh; K. Y. Cheng; I. Adesida; John Connelly; Ramon Martinelli; ILLINOIS UNIV AT URBANA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
|
| Infrared sensing in the two wavelength ranges (3-5 micrometers and 8- 12 micrometers) has important military applications. Most commonly used detecting materials and devices are HgCdTe-based detectors and quantum-well infrared photodetectors (QWIP). Antimonide-based III-V materials also have potentials. To further realize a multi-wavelength imaging device, however, requires the integration of infrared photodetector array consisting of materials having different bandgap energies (usually having different lattice dimensions too). A major challenge arises ... |
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| Realistic Analysis and Simulation Tools for EO and IR (RASTER) |
02 JUL 2001 |
19 pages |
| Authors:
Jeffrey Noel; NAVAL AIR WARFARE CENTER AIRCRAFT DIV PATUXENT RIVER MD
|
| This report consisting of viewgraphs, explains infrared systems, discussed modeling and simulation, introduces the RASTER (Realistic Analysis and Simulation Tools for EO and IR) concept, computer generated imagery output, and RASTER components. |
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| Technologies for Future Precision Strike Missile Systems (les Technologies des futurs systemes de missiles pour frappe de precision) |
JUL 2001 |
|
| Authors:
NATO RESEARCH AND TECHNOLOGY ORGANIZATION NEUILLY-SUR-SEINE (FRANCE)
|
| This lecture series addressed recent advances in the state-of-the-art for precision strike missile systems. Emerging technologies that were addressed in the lecture series included: Mission planning technology. Assessments included off-board sensor integration, near-real-time mission planning, flight altitude, terrain following and missile data links for in-flight targeting. Missile aeromechanics technology. Assessments included hypersonic airframes, low cost/high temperature structure, and ramjet propulsion. Guidance & control technology. An overview of existing guidance and ... |
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| Irradiance Calibration of Space-Based Infrared Sensors |
JUL 2001 |
47 pages |
| Authors:
Russell Walker; Martin Cohen; VANGUARD RESEARCH INC SCOTTS VALLEY CA
|
| The purpose of this work is to develop a basis for irradiance calibration of spacebased infrared sensors. It is an extension of previous work that fully defines the context of the calibration, and the concepts of spectral composites and templates. We discuss four areas of work carried out during the past year; our accomplishments and failures; and our plans for the future. The four areas are: 1) Production and release ... |
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| Radar and Infrared Sensors for Landmine Detection |
30 JUN 2001 |
3 pages |
| Authors:
Brian Borchers; NEW MEXICO INST OF MINING AND TECHNOLOGY SOCORRO
|
| In this project, sensors for land mine detection research were purchased. The sensors included a ground penetrating radar system operating at 1200 Mhz, as well as a long wave IR camera. A weather station and time domain reflectometry system for monitoring soil water content were also purchased. The sensors have been used in support of an ongoing research program in modeling soil physical properties and their effect on the performance ... |
|
| MEMS Direct View Infrared Vision System (DVIR) |
JUN 2001 |
73 pages |
| Authors:
Heinz H. Busta; SARNOFF CORP PRINCETON NJ
|
| Sarnoff has fabricated 16 x 16 pixel arrays of gated field emitters in which the gate plates are MEMS structures actuated by infrared radiation in the 8 - 12 micro regime. The actuators consist of 250 micro SiC, 20 nm TiW, and 300 nm Au. |
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| PSPICE Modelling and Parametric Study of Microbolometer Thermal Detectors |
JUN 2001 |
74 pages |
| Authors:
Scott W. Stetson; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The operation of a bolometer thermal sensor is analogous to that of a charging capacitor in a generic RC circuit. As such, circuits containing bolometers can be analyzed with standard circuit simulation programs such as PSPICE. This thesis deals with the development of a bolometer model by using PSPICE with the aid of Analogue Behavior Modeling (ABM) capability, which allows the user to program circuit components with basic mathematical functions. ... |
|
| Time Constant of Far IR Response of Quantum Hall Device |
JUN 2001 |
4 pages |
| Authors:
I. V. Erofeeva; V. I. Gavrilenko; O. Astafiev; Y. Kawano; S. Komiyama; RUSSIAN ACADEMY OF SCIENCES NIZHNY NOVGOROD INSTITUTE FOR PHYSICS OF MICROSTRUCTURES
|
| The characteristic time of far IR response of quantum Hall effect detector in GaA/AlGaAs has been investigated versus the magnetic field. The response time is shown to increase dramatically with the field due to the spatial separation of photoexcited electrons and holes captured by localized states formed by the disordered potential. |
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| Resonant gamma-X-Transfer in GaAs/AlAs Quantum-Well Structures |
JUN 2001 |
|
| Authors:
S. R. Schmidt; A. Seilmeier; E. A. Zibik; L. E. Vorobjev; A. E. Zhukov; BAYREUTH UNIV (GERMANY) PHYSIKALISCHESINST
|
| We investigate the Gamma(2-)X(z1) intersubband dynamics in GaAs/AlAs quantum-well structures by time-resolved infrared pump and probe experiments. In the studied structure, the second Gamma-level in GaAs is nearly resonant to the first X(z-)-level in AlAs. We observe a biexponential decay of the bleaching signal with a fast time constant in the order of 1 ps and a second slower time constant of about 7 ps at 10 K and 4 ... |
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| Military Vehicle Intelligence: Next Generation Electrical Architecture Infrared Microbolometer Night Vision Camera |
30 MAY 2001 |
14 pages |
| Authors:
Mitchell Kozera; TACOM RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
|
| Presentation given at the 2001 Vehicle Technologies Symposium, 29-31 May 2001, sponsored by the National Defense Industrial Association. |
|
| Performance Analysis of Tower Watch Camera Systems |
MAY 2001 |
17 pages |
| Authors:
Richard Hansen; COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CT
|
| A technology demonstration effort was undertaken to determine if a remote imaging system could be used to reduce workload at a U.S. Coast Guard Small Boat (Surf) Station. The remote imaging system consisted of a black and white Closed Circuit Television (CCTV) system with integrated image intensification and long-range thermal (infrared) imaging. The goal was to determine the extent to which remote monitoring of rough inlet bar conditions and vessel ... |
|
| Electronic Warfare (EW) Receiver and Processing Concepts Evaluation Program (RAPCEval 2) |
MAY 2001 |
182 pages |
| Authors:
W. T. Bass; MERCER ENGINEERING RESEARCH CENTER WARNER ROBINS GA
|
| The EW Receiver and Processing Concepts Evaluation Program (RAPCEval2) tasks have provided analytical support for current research for the Electronic signal Measurement (ESM) group at Air Force Research Laboratory (AFRL). Tasks initiated under OPTION 3 of the contract of this program provided analysis for inputs and countermeasures for electronic receivers of radar, electro-optic, infrared, and ultraviolet systems. Research has been performed under the direction of the Joint Program Research Standards ... |
|
| Application of Optic Flow to Missiles |
25 APR 2001 |
17 pages |
| Authors:
Ryan Pendleton; AIR FORCE RESEARCH LAB EGLIN AFB FL MUNITIONS DIRECTORATE
|
| The background is as follows: Why investigate optic flow? Optic Flow (OF) definition; Review of current OF efforts; Specific challenges for missile application; Goals for AFRL/MN effort. |
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| Application of Optic Flow to Missiles |
25 APR 2001 |
|
| Authors:
Ryan Pendleton; AIR FORCE RESEARCH LAB EGLIN AFB FL MUNITIONS DIRECTORATE
|
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| Infrared Sensor Stimulator (IRSS) Installation in the ACETEF, NAWC-AD, Patuxent River, MD |
23 APR 2001 |
11 pages |
| Authors:
Tom W. Joyner; NAVAL AIR WARFARE CENTER AIRCRAFT DIV PATUXENT RIVER MD
|
| Military platforms are increasingly dependent on the use of installed RF and Electro-optical sensor systems and their data correlation/fusion to contend with the increasing complexities of multimission warfare. Prior to expensive flight and field testing, rigorous test and evaluation (T&E) of the installed/integrated sensors' performance and interaction is needed. Consequently, the optimum use of scarce testing resources requires simultaneous T&E of multiple installed avionics and sensor subsystems in ground test ... |
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| Identification of Chemical Agents (Mimics) Residues after Destructive Adsorption Using TPD and UV-vis-IR and Raman |
APR 2001 |
3 pages |
| Authors:
Kenneth J. Klabunde; KANSAS STATE UNIV MANHATTAN
|
| Instrumentation was purchased that helps characterize the chemical structures and chemical reactions that occur when nanocrystalline metal oxides carry out destructive adsorption of chemical agents mimics. The residues (adducts) are characterized and the gases given off identified. |
|
| Historical Analysis of Land Cover/Condition Trends at Fort Bliss, Texas, Using Remotely Sensed Imagery |
APR 2001 |
68 pages |
| Authors:
Scott Tweddale; ENGINEER RESEARCH AND DEVELOPMENT CENTER CHAMPAIGN IL CONSTRUCTION ENGINEERING RESEARCH LAB
|
| Fort Bliss, Texas, is a Training and Doctrine Command installation located in the semi-arid Northern Chihuahuan Desert of Western Texas and South Central New Mexico. Military training (both tracked and wheeled vehicles), grazing, and recreational activities act as stressors on the landscape. The natural resource managers need information on land condition to make informed land management decisions and to support conservation and compliance efforts. They need a cost-effective method of ... |
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| Potential Payoff of Fusion between HSI and other Sensors |
APR 2001 |
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| Authors:
Su May Hsu; Hsiao hua Burke; MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
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| In this paper, two examples of sensor fusion are demonstrated. The first is hyperspectral imaging (HSI) with Synthetic Aperture Radar (SAR) and the other is HSI with high-resolution panchromatic imaging (HPI). HSI and SAR fusion exploits different phenomenologies from distinctly different sensors. HSI and HPI fusion optimizes their superior respective spectral and spatial information. Examples are illustrated using field measurements as well as simulated data. Fusion of SAR and HSI ... |
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| Potential Payoff of Fusion Between HSI and Other Sensors |
APR 2001 |
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| Authors:
S. M. Hsu; H. K. Burke; MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
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| Briefing notes regarding prospects for HSI(Hyperspectral Imaging) and SAR(Synthetic Aperture Radar) sensor fusion towards HPI(High-resolution Panchromatic Imaging). |
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| Tropospheric Lidar: Development of Techniques and Practical Measurements |
29 MAR 2001 |
34 pages |
| Authors:
T. D. Wilkerson; V. B. Wickwar; M. R. Hammond; UTAH STATE UNIV LOGAN
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| We report the successful development of a hydrogen Raman shifted tunable narrow line alexandrite laser transmitter for near-IR H(2)O spectroscopy. Fourier analysis of the alexandrite laser radiation showed a 10 MHz fundamental linewidth and 20 MHz raman linewidth. As a first test of the transmitter we measured the line strengths and air-broadened widths for 15 lines in the 1140 nm water vapor band. These lines were measured by transmittance of ... |
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Infrared Detection and Detectors
