| Reverberant Microwave Propagation |
Oct-2008 |
246 pages |
| Authors:
Robert E Richardson; NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
 | The purposes of this Reverberant Microwave Propagation work were, first, to expand measurement capabilities by an extensive investigation of short pulse excitation of empty, partially filled, and coupled cavities, and second, to improve our understanding of microwave propagation in moderately reverberant spaces, such as ship and aircraft compartments and in metal buildings. Understanding propagation in these types of spaces is increasingly important to the U.S. Navy. Various electromagnetic compatibility (EMC) ... |
|
| Compressed Scattering Matrices and Fast Direct Solvers |
18 OCT 2007 |
9 pages |
| Authors:
Vladimir Rokhlin; YALE UNIV NEW HAVEN CT GRANT AND CONTRACT ADMINISTRATION
|
| New direct and analytically precondidoned frequency and time domain integral equation solvers have been developed. First mechanisms for compressing scattering matrices in static and relatively low-frequency environments will be pursued and used in the construction of direct frequency domain integral equation solvers applicable to objects roughly 40 wavelengths in size. Second hierarchical and Calderon preconditioned time-domain integral equation solvers were developed. These solvers remain repidly convergent and stable even when ... |
|
| The Safety of Aircraft Exposed to Electromagnetic Fields: HIRF Testing of Aircraft Using Direct Current Injection |
JUN 2007 |
|
| Authors:
Chris Leat; DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION EDINBURGH (AUSTRALIA) AIR OPERATIONS DIV
|
 | Even the original developers of Bulk Current Injection now make the point that the use of BCI at aircraft level will become increasingly difficult. Direct Current Injection has the potential to replace aircraft level BCI, while also solving many of the longstanding problems of BCI. These problems include lack of synergism, inaccurate current distribution within bundles and limited numbers of injection sites due to time and cost considerations. However, calibration, ... |
|
| HF Interference, Procedures and Tools (Interferences HF, procedures et outils) |
JUN 2007 |
|
| Authors:
NATO RESEARCH AND TECHNOLOGY ORGANIZATION NEUILLY-SUR-SEINE (FRANCE)
|
| This Report presents the results of the work carried out by IST-050/RTG-022 the Research Task Group (RTG) on "HF Interference Procedures and Tools" to address the concerns raised by the potential for unintentional radio interference to be caused by the widespread operation of broadband wire-line telecommunications systems, such as PowerLine TeleCommunications (PLT, PLC) and various forms of Digital Subscriber Line (xDSL). Increase of the existing HF noise floor by widespread ... |
|
| Automated Spectrum Plan Advisor for On-The-Move Networks |
OCT 2006 |
6 pages |
| Authors:
William Heisey; William Kline; Harris Zebrowitz; Randy Poe; Shanti Sharma; Andrew Cortese; Mahbub Hoque; Francis Loso; Yoram Levy; LOCKHEED MARTIN ADVANCED TECHNOLOGY LABS CHERRY HILL NJ
|
| Warfighters today face new challenges in accessing the electromagnetic spectrum. These challenges are due to the significant growth in spectrum demands for deployed spectrum dependent systems, increased demand for information and advanced C2 concepts associated with net-centricity and increased competition for spectrum resources from commercial and civil interests. This adds up to near complete spectrum saturation in areas of potential DoD deployment. In addition, the rapid pace of future Net ... |
|
| Electromagnetic Susceptibility of the Area Denial Weapon System (ADWS) |
AUG 2006 |
|
| Authors:
Valerian A. Kuznetsov; Vinod P. Puri; DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION EDINBURGH (AUSTRALIA)
|
| A practical realisation of Electromagnetic Immunity/Compatibility (EMI/EMC) testing of ordnance weapons with electrical initiation according to compliance standards is described. The Area Denial Weapon System (ADWS), which is electrically initiated and electronically controlled, was exposed to electromagnetic interference of a known intensity in an anechioic chamber by injection of induced current, in accordance with the requirements of the USA MIL-STD-461E standard [1] and of the UK's Ordnance Board Pillar Proceeding ... |
|
| Aerospace Sensor Component and Subsystem Investigation and Innovation-2 Component Exploration and Development (ASCII-2 CED). Delivery Order 0002: Volume 2. Reconfigurable Aperture Antenna Virtual Prototyping (Wideband Lumped Circuit Models for Integrated |
SEP 2005 |
55 pages |
| Authors:
Andrew W. Buurma; Roberto G. Rojas; SYSTRAN FEDERAL CORP DAYTON OH
|
| As the speed of transistors has risen in recent years, acquiring accurate models for the passive devices used in integrated circuits has become a greater challenge. Current device speeds are in the tens of GHz, and at these frequencies the parasitic effects of inductors can become difficult to predict. At GHz level frequencies, monolithic inductors suffer from severe parasitic effects. The relatively large size of the inductor (hundreds of microns), ... |
|
| Low-Frequency EM Field Penetration Through Magnetic and Conducting Cylindrical Shields |
2005 |
5 pages |
| Authors:
Michael A. Morgan; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
|
| Computation of low-frequency field penetration through magnetic and/or conducting materials is important for quantifying electromagnetic compatibility issues in devices and facilities, as well as prediction of field signatures external to ships and submarines due to internal electrical machinery. A computational procedure is described for accurately predicting the penetration of low-frequency fields through a cylindrical structure, possibly arranged in layers. The internal source being shielded is a large multi-turn coil having ... |
|
| Panel Discussion on GNSS Interoperability |
2005 |
21 pages |
| Authors:
Edoro Detoma; Ronald L. Beard; Hugo Fruehauf; Jens Hammesfahr; Chris Hegarty; William J. Klepczynski; Nicholas Koshelyaevsky; Wlodzimierz Lewandowski; Dennis D. McCarthy; NAVAL OBSERVATORY WASHINGTON DC
|
| This panel discussion on GPS SIGNALS GNSS INTEROPERABILITY CHALLENGES AND OPPORTUNITIES focuses on the following topics: A. Ensuring Radio Frequency (RF) compatibility - June 2004 US-EU agreement for GPS-Galileo + follow-on working groups; - Ongoing bilateral discussions between United States and other nations/organizations for QZSS, GLONASS, SBAS, etc.; B. Enhancing interoperability Incorporation of system time offset messages in navigation data for new civil/military signals. Are there other inter-system messages that ... |
|
| 4TH International Conference on Antenna Theory and Techniques. Volume 1 |
12 SEP 2003 |
420 pages |
| Authors:
KHARKOV NATIONAL UNIV OF RADIOELECTRONICS (UKRAINE)
|
| The Final Proceedings for 2003 International Conference on Antenna Theory and Techniques (ICATT), 9 September 2003 - 12 September 2003. This is an interdisciplinary conference. Topics include: 1. General antenna theory; 2. Reflector, lens and hybrid antennas; 3. Antenna arrays; 4. Adaptive antennas, signal processing; 5. Broadband and multi frequency antennas; 6. Low-gain, printed antennas 7. Antennas for mobile communication; 8. Antennas for remote sensing; 9. Antenna measurements; 10. Analytical ... |
|
| Reduce's Ship's Crew-By Virtual Presence (RSVP) Advanced Technology Demonstration (ATD) |
FEB 2003 |
353 pages |
| Authors:
Anthony J. Seman III; Kevin Toomey; Scott Lang; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD
|
| RSVP was a proof-of-concept and technology demonstrator, whose purpose was to provide Navy research and development risk mitigation for the DD21 program. The three year, 15 million dollar, BA 6.3 program was sponsored by the Office of Naval Research (ONR) Ship Hull, Mechanical, & Electrical Systems Science and Technology Division (Code 334) The high risk, high payoff ATD was significant to the Navy and DOD in demonstrating an intra-compartment, wireless ... |
|
| SESCAT Investigations of 50 MHz Coherent Backscatter Phenomena in midlatitude E-region Ionosphere |
06 DEC 2002 |
9 pages |
| Authors:
Christos Haldoupis; CRETE UNIV (GREECE)
|
| This report results from a contract tasking University of Crete as follows: The contractor will investigate the ionosphere's ability to reflect radio waves (backscatter) using the Sporadic E SCATter experiment (SESCAT). SESCAT is an ionospheric radio Doppler system on the island of Crete, Greece (a fixed, ground-based facility). The contractor will evaluate bulk motions and spatial structuring within unstable sporadic E layers. The objective of this research is to experimentally ... |
|
| Applied Computational Electromagnetics Society Journal. Volume 17, Number 3 |
NOV 2002 |
|
| Authors:
Atef Z. Elsherbeni; APPLIED COMPUTATIONAL ELECTROMAGNETICS SOCIETY UNIVERSITY MS
|
| The Applied Computational Electromagnetics Society (ACES) Journal hereinafter known as the ACES Journal is devoted to the exchange of information in computational electromagnetics, to the advancement of the state-of-the art, and the promotion of related technical activities. A primary objective of the information exchange is the elimination of the need to "reinvent the wheel" to solve a previously-solved computational problem in electrical engineering, physics, or related fields of study. The ... |
|
| Evaluation of Uncertainty Budget for Antenna Calibration |
SEP 2002 |
3 pages |
| Authors:
B. Tueretken; S. E. San; M. Yazici; I. Araz; M. Hekim; GAZIOSMANPASA UNIV TOKAT (TURKEY)
|
| Accurate field strength measurements for EMC conformance testing can be obtained by using antennas which have reliable antenna factors (AF). AF is a major component in calculating the uncertainty budget of an EMC test. So AF must be highly accurate and the equipment used for measurement must be traceable to a national standard. In a calibration process, it is important to obtain reliable data on two important characteristics : traceability ... |
|
| Drop-Shaped Monopole Antenna and Its Interaction with the User's Head |
SEP 2002 |
3 pages |
| Authors:
G. Ghvedashvili; R. Zaridze; K. Tavzarashvili; G. Saparishvili; A. Bijamov; TBILISI STATE UNIV (GEORGIA) LAB OF APPLIED ELECTRODYNAMICS
|
| This paper is dedicated to the EMC/EMI problems from the standpoint of the efficient and safe mobile equipment antenna structures development and to investigation of the influence of such antennas on the user's head. The dielectric monopole drop-shaped antenna has been proposed and the numerical investigations of its behavior taking into account its interaction with the feeding cable and user's head have been carried out. The corresponding EM problem is ... |
|
| Shielding Considerations for Transient Magnetic Fields Produced by a Pulsed Moving Conductor System |
MAY 2001 |
34 pages |
| Authors:
Alex E. Zielinski; Ira Kohlberg; John Bennett; Calvin D. Le; W. J. Sarjeant; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| A model was developed for determining the space and time behavior of the magnetic field external to a system of conductors. A moving conductor is in relative close proximity to a stationary conductor that provides the source current. An additional conductor attenuates the environmental field. The space and time periodicity of the field are related to the parameters of the system. A numerical example predicts the magnitude of the magnetic ... |
|
| Notional Shielding for Pulsed Power in Combat Systems |
27 MAR 2001 |
11 pages |
| Authors:
Alex E. Zielinski; Ira Kohlberg; John Bennett; Calvin D. Le; W. J. Sarjeant; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| A model was developed for determining the space and time behavior of the magnetic field external to a system of conductors. A moving conductor is in relative close proximity to a stationary conductor that provides the source current. An additional conductor provides attenuation of the environmental field. The space and time periodicity of the field is related to the parameters of the system. A numerical example predicts the magnitude of ... |
|
| Assessment of Compatibility between Ultrawideband (UWB) Systems and Global Positioning System (GPS) Receivers |
FEB 2001 |
149 pages |
| Authors:
David S. Anderson; Edward F. Drocella; Steven K. Jones; Mark A. Settle; NATIONAL TELECOMMUNICATIONS AND INFORMATION ADMINISTRATION WASHINGTON DC
|
| The study described in this report was undertaken by the National Telecommunications and Information Administration (NTIA) in response to a Federal Communications Commission (FCC) Notice of Proposed Rule Making (NPRM) concerning the operation of a new class of spectrum-dependent devices, designated as ultrawideband (UWB) devices under the FCC's rules and regulations in Part 15 of Title 47 of the Code of Federal Regulations (CFR). This NPRM raises a number of ... |
|
| Global Broadcast Service (GBS) Blockage Assessment for USS Coronado (AGF-11) |
NOV 2000 |
37 pages |
| Authors:
R. A. Axford Jr.; G. B. Fitzgerald; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
|
| This report examines the impact of USS Coronado's two Global Broadcast Service (GBS) topside antenna locations on the availability of broadcast services. Blockage in the present locations limits global average line-of-sight availability (GALA) to 83.7% in calm seas, and to 78.3% and 68.2% in Sea States 4 and 6, respectively. However, the local average line-of-sight availability (LALA) for these topside locations drops to -50% in large regions in the ship's ... |
|
| Consequences for the Design of Military Aircraft Systems Due to Integration of Commercial Electronic Components in Avionics |
OCT 2000 |
10 pages |
| Authors:
E. Cernko; D. Jaeger; R. Manser; EUROPEAN AERONAUTIC DEFENCE AND SPACE DEUTSCHLAND GMBH MUNCHEN (GERMANY)
|
| The time when aerospace requirements and investments initiated micro-electronic components development has passed. Industries like Telecom and Personal Computer invest many times more than aerospace with huge economical performance size mass packaging and assembly improvements. The lifespan of these developments in the market is very short. The Life Cycle Costs for keeping tip avionics design with special ruggedized components and designs is likely to be higher than to adapt a ... |
|
| Radio-Frequency Propagation Measurements in Confined Ship Spaces Aboard the ex-USS Shadwell |
18 AUG 2000 |
73 pages |
| Authors:
Eric L. Mokole; Mark Parent; Surendra N. Samaddar; Edmond Tomas; Brian T. Gold; NAVAL RESEARCH LAB WASHINGTON DC TARGET CHARACTERISTICS BRANCH
|
| Understanding the propagation of RF energy in confined naval shipboard environments is extremely important to the operability and effectiveness of communication systems used by the Navy. Single-frequency communication systems are known to suffer from multipath interference that can render them ineffective in confined spaces. Spread-spectrum and frequency- hopping systems, currently used in wireless local area networks (LANs), have been shown to operate effectively in ... |
|
| Preliminary Performance Results of the High Performance Hall System SPT- 140 |
19 JUN 2000 |
14 pages |
| Authors:
William Hargus Jr.; J. M. Fife; Lee Mason; Robert Jankovsky; Thomas Haag; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE WEST
|
| The High Performance Hall System (HPHS) program supports the development and flight qualification of a 4.5 kW electric propulsion system that includes the SPT-140 Hall thruster. The Air Force Research Laboratory (AFRL) and International Space Technology, Inc. (ISTI) are co-funding the HPHS program which is being conducted by a team led by Atlantic Research Corporation (ARC). The team includes ISTI, Experimental Design Bureau Fakel (Fakel), and Space Systems/Loral (S/SL). The ... |
|
| Performing Radio Frequency Weapons RDT&E in an Installed System Test Facility |
JUN 2000 |
34 pages |
| Authors:
Sam Frazier; NAVAL AIR WARFARE CENTER AIRCRAFT DIV PATUXENT RIVER MD
|
|
| An Examination of the Nature, Effects and Control of Electromagnetic Fields |
MAY 2000 |
54 pages |
| Authors:
W. J. Sargeant; C. Marinos; A. Zielinski; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| Electromagnetic (EM) armaments and electric launchers are emerging systems that are of increasing importance to the armed forces. Included in this category are the railgun, coilgun, reconnection gun, electrothermal (ET) gun, and electrothermal-chemical (ETC) gun. The system design issues for managing EM fields generated by these devices and their associated pulsed power systems, which may include compulsators and pulse disk alternators, in the military ... |
|
| WSTIAC: Weapon Systems Technology Information Analysis Center. Volume 1,Number 2. Modernizing Situational Awareness and Battlefield Management |
APR 2000 |
15 pages |
| Authors:
WEAPON SYSTEMS TECHNOLOGY INFORMATION ANALYSIS CENTER ALEXANDRIA VA
|
|
| 16TH Annual Review of Progress in Applied Computational Electromagneticsof the Naval Postgraduate School, Monterey, CA. Volume I |
24 MAR 2000 |
553 pages |
| Authors:
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
|
| 16TH Annual Review of Progress in Applied Computational Electromagneticsat the Naval Postgraduate School Monterey, CA, March 20-24, 2000, Volume II |
24 MAR 2000 |
528 pages |
| Authors:
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
|
| Testing and Evaluation of the IMPACT Instrumentation, Inc., Model 754/ 754M Portable, Self-Contained Ventilation System |
FEB 2000 |
18 pages |
| Authors:
Butch O. Blake; AIR FORCE RESEARCH LAB BROOKS AFB TX HUMAN EFFECTIVENESS DIRECTORATE
|
|
| Status of US Testing of the High Performance Hall System SPT-140 Hall Thruster |
13 JAN 2000 |
7 pages |
| Authors:
W. Hargus Jr.; R. Jankovsky; L. Mason; J. Snyder; S. Malone; AIR FORCE RESEARCH LAB EDWARDS AFB CA SPACE AND MISSILE PROPULSION DIV
|
| The High Performance Hall System (HPHS) program supports the development and flight qualification of a 4.5 kW electric propulsion system that includes the SPT-140 Hall thruster. The Air Force Research Laboratory (AFRL) and International Space Technology, Inc (ISTI) are co-funding the HPHS program which is being conducted by a team led by Atlantic Research Corporation (ARC). The team includes ISTI, Experimental Design Bureau Fakel (Fakel), and Space Systems Loral (S/SL). ... |
|
| Shipboard EMI/EMC Test Report for the Reduced Ships-Crew by Virtual Presence (RSVP) Advanced Technology Demonstration (ATD) |
JUL 1999 |
36 pages |
| Authors:
John Vytal; CHARLES STARK DRAPER LAB INC CAMBRIDGE MA
|
| EMI/EMC testing was conducted on board the USS Normandy (CG-60), a Ticonderoga Class Aegis Cruiser in early April of 1999. The tests were made to determine a typical electromagnetic operating environment for the RSVP RF communications System and to perform propagation measurements in the proposed 2. 4 GHz ISM band. The scope of the testing included measurements of the electromagnetic environment from 10 KHz to 3 GHz in three different ... |
|
| A Mathematical Model of a Gigahertz Transverse Electromagnetic Cell, I |
MAY 1999 |
23 pages |
| Authors:
Sherwood Samn; Satnam Mathur; MCKESSON HBOC BIO-SERVICES BROOKS AFB TX
|
| A mathematical model for transverse electromagnetic (TEM) cell has been constructed. The model estimates the electric field inside rectangular or flared TEM cells driven by a wideband electromagnetic current pulse. The finite difference time domain (FDTD) approach is used. |
|
| Characterization of a Hard-Switching Motor Controller for EMC considerations |
MAR 1999 |
32 pages |
| Authors:
S. T. Li; J. B. McGee; J. H. Schukantz; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
|
| The overall objective of this research is to characterize Power Electronic Building Blocks (PEBBs) for application of electromagnetic compatibility (EMC) in existing and advanced shipboard electric power systems. Both emissions and susceptibility levels will be studied, first for radiated EMI and later for conducted EMI. The EMI suppression techniques in large and small high-density power electronic modules will be developed. This document presents the results of the initial efforts toward ... |
|
| Testing and Evaluation of the Mine Safety Appliances, Co., Model 3000, Oxygen Monitor |
NOV 1998 |
16 pages |
| Authors:
James C. Sylvester; AIR FORCE RESEARCH LAB BROOKS AFB TX HUMAN EFFECTIVENESS DIRECTORATE
|
| The Mine Safety Appliances, Co., Model 3000, Oxygen Monitor is an oxygen monitor designed to provide continuous, direct monitoring of oxygen mixtures. The unit operates on a 9V internal battery. The unit weighs approximately 260 Gm or 9.2 oz. and is 3.25 in. W. X 5.98 in. H. X 1.31 in D. |
|
| ACN Handheld System Design Study Team Report |
07 OCT 1998 |
|
| Authors:
David Legare; Thomas Blake; Richard Sterline; Michael Gleason; Edmund Erskine; MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
|
| This report examines handheld wireless communication services for the tactical theater that can be provided by a high altitude airborne communication node (ACN) such as the Global Hawk unmanned air vehicle (UAV). An integrated system approach supporting four categories of service is described. The four handheld services included are: a circuit-oriented service for voice and other streaming traffic, a data-oriented service for packets, a tactical broadcast ... |
|
| Electromagnetic Field Analysis of Digital Circuits and Modules for Electromagnetic Compatibility and Reliability |
AUG 1998 |
38 pages |
| Authors:
Allen Taflove; NORTHWESTERN UNIV EVANSTON IL
|
| The progressive elevation of clock speeds in digital electronic circuits is compelling the merging of design considerations for such circuits with those of analog microwave circuits. For sufficiently high clock rates digital circuits develop substantial analog effects, such as coupling and radiation, that markedly affect the flow of signal pulses in such structures as multilayer circuit boards and multichip modules resulting in unreliable circuit ... |
|
| Fourteenth International Wroclaw Symposium and Exhibition on Electromagnetic Compatibility, June 23-25, 1998 |
29 JUL 1998 |
764 pages |
| Authors:
PORTO UNIV (PORTUGAL) FACULTY OF ENGINEERING
|
| The Final Proceedings for 14th Int'l Wroclaw Symposium and Exhibition on Electromagnetic Compatibility, 23 June 1998- 25 June 1998 This is an interdisciplinary conference. Topics include all aspects of EMO theory and practice: antennas and propagation, biological effects, ESO, lightning, EMI reduction techniques, grounding, shielding, and absorption. |
|
| Testing and Evaluation of the CDITM, 3M Health Care CDTM 400 Extracorporeal Blood Gas Monitoring System |
JUN 1998 |
18 pages |
| Authors:
Allen E. Jones; AIR FORCE RESEARCH LAB BROOKS AFB TX HUMAN EFFECTIVENESS DIRECTORATE
|
| The CDI 400 provides continuous, on-line monitoring of extracorporeal pH, PCO2, PO2, temperature, calculated arterial base excess (BE) or bicarbonate (HCO3), and venous oxygen saturation (SvO2). The CDI 400 is intended for use during cardiopulmonary bypass procedures when continuous blood gas and pH monitoring is desired. The CDI 400 utilizes a microprocessor based monitor and optical fluorescence technology. The fiberoptic cable assemblies (one venous and one arterial) connect the monitor ... |
|
| Development of an Auxiliary Power Unit Specification for Medium Duty Series Hybrid Electric Vehicles |
JUN 1998 |
59 pages |
| Authors:
Scott T. McBroom; Julian Garza; Pat Wildemann; SOUTHWEST RESEARCH INST SAN ANTONIO TXTARDEC FUELS AND LUBRICANTS RESEARCH FACILITY
|
| As a part of the Defense Advanced Research Projects Agency (DARPA) program to develop hybrid and electric vehicles, a specification for medium duty auxiliary power units (APUs) was developed. The scope of this work defines the interface requirements of an APU or range extender for use in series hybrid electric vehicles. Intended applications include medium duty commercial vehicles and buses. For the purposes of this specification an APU is defined ... |
|
| Linking Advanced Distributed Simulations with Flight Testing |
JUL 1997 |
11 pages |
| Authors:
Douglas S. Ayers; Robert Cross; Brian Fox; Wayan Hostilo; Johnny Pappas; DYNETICS INC SHALIMAR FL
|
| The test and evaluation community is relatively new to Advanced Distributed Simulation Technology (ADS). Each facility participating in the JADS program has independently developed a method for testing specific aspects of various weapons systems. The MISILAB, which organizationally is part of the OWEF, but is located in a separate facility, has supported AMRAAM simulations and characterizations over the past decade. The CCF has supported real-time ... |
|
| Conference Proceedings: 13th Annual Review of Progress in Applied Computational Electromagnetics at the Naval Postgraduate School, Monterey, CA, March 17-21, 1997. Volume II |
MAR 97 |
780 pages |
| Authors:
Eric C. Michleissen; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| MAJOR TOPICS OF THIS CONFERENCE INCLUDE: (1) COMPOSITE MATERIALS; (2) NEC AND COMPUTER CODES FOR COMPUTATIONAL ELECTROMAGNETICS; (3) PML: THEORETICAL AND NUMERICAL IMPLEMENTATION ISSUES; (4) FAST SOLVERS FOR ELECTROMAGNETIC SCATTERING PROBLEMS; (5) WAVE PROPAGATION; (6) EMI/EMC; (7) CEM ANALYSIS: THE APPROACH OF THE FUTURE; (8) FDTD APPLICATIONS; (9) PLANAR ANTENNAS AND CIRCUITS; (10) SCATTERING; (11) OPTIMIZATION TECHNIQUES FOR ELECTROMAGNETICS; (12) ADVANCES IN TRANSMISSION LINE MATRIX (TLM) MODELING; AND (13) PLANAR ... |
|
| Conference Proceedings: 12th Annual Review of Progress in Applied Computational Electromagnetics of the Naval Postgraduate School, Monterey, CA march 18-22, 1996. Volume II |
MAR 96 |
|
| Authors:
Richard K. Gordon; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
|
| Zero-Cost Electromagnetically Transparent Fluid Controlled Electrical Switch |
JAN 96 |
11 pages |
| Authors:
Vincent J. Ellis; ARMY RESEARCH LAB ADELPHI MD
|
| A remote fluidic controlled electric switch adaptation is disclosed. The adaptation is electromagnetically transparent and material costs are near zero. An electric switch, containing mechanically operated contacts, is modified by a flexible diaphragm secured next to the switch's mechanical contacts via uses an electromagnetically transparent housing. Pressurized fluid, either liquid or gas, enters the housing and inflates the diaphragm. This exerts positive pressure on the electric switch's mechanical contact and ... |
|
| AGARD Flight Test Techniques Series. Volume 14. Introduction to Flight Test Engineering (Introduction a la Technique d'essais en vol) |
SEP 1995 |
|
| Authors:
F. N. Stoliker; ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRANCE)
|
| The first two Sections are the Introduction and Historical Perspective. They provide some insight into the question of why flight test and give a short history of flight test engineering. Sections 3 through 10 deal with the preparation for flight testing. They provide guidance on the preliminary factors that must be considered. such as the technical, commercial, and political background to the t |
|
| Prediction of Electromagnetic Fields Generated by Rail Guns |
SEP 95 |
41 pages |
| Authors:
Ira Kohlberg; BATTELLE MEMORIAL INST COLUMBUS OH
|
| Electromagnetic launch systems such as rail guns generate electromagnetic signatures that contain a spectrum of frequencies extending from quasi-DC up to tens of kilohertz. However, electromagnetic compatibility (EMC) considerations pertaining to the potential adverse effects of these fields on nearby electronic equipment remain largely unexplored. This report includes a discussion of the theoretical models used to predict the inductance gradient, the transient behavior of the currents produced in the rail ... |
|
| Communications System Using a Sharply Bandlimited Keying Waveform. |
31 MAR 1995 |
31 pages |
| Authors:
William M. Waters; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| It is the object of this invention to transform a communications sequence in a communications system into an analog signal which is spectrally confined to the band available for the transmission within a band limited communications channel without compromising communication accuracy. Another object of this invention is to improve spectral confinement thereby allowing closer channel spacing and better electromagnetic compatibility among radar, ... |
|
| Vibration Control Using Chaotic Motion Stabilizers |
20 DEC 94 |
30 pages |
| Authors:
David L. Don; Edward S. Regan; RHEOLOGY RESEARCH GAITHERSBURG MD
|
| Chaotic Motion Stabilizers transform chaotic behavior into predictable periodic motion. Our product enhances the performance of active damping systems, eliminates the need for damping devices in some applications, and increases the variability of passive damping methods. We have based our product on the observance that chaotic attractors typically have infinite numbers of unstable periodic orbits. The device attempts to stabilize existing orbits in the attractor - not create new ones. ... |
|
| Electromagnetic Interference Testing and Electrical Subsystem - Non- Communication |
16 DEC 94 |
23 pages |
| Authors:
ARMY COMBAT SYSTEMS TEST ACTIVITY ABERDEEN PROVING GROUND MD
|
| This TOP describes procedures for conducting Electromagnetic Interference (EMI) tests of Non-Communication Electronic Equipment (NCEE) and Mobile Equipment Power (MEP) sources. |
|
| Military Standard: Test Requirements for Launch, Upper-Stage, and Space Vehicles |
15 SEP 1994 |
|
| Authors:
DEPARTMENT OF DEFENSE WASHINGTON DC
|
|
| Electromagnetic Interference Tests |
31 MAY 94 |
26 pages |
| Authors:
ARMY TEST AND EVALUATION COMMAND ABERDEEN PROVING GROUND MD
|
| This TOP is a general guideline for electromagnetic interference testing of electronic, electrical, and electromechanical equipment, subsystems, and systems. This TOP is applicable to the measurement of emissions and the identification of susceptibilities for all systems and in all test categories. Conducted emissions, Radiated emissions, Digital equipment tests, Radio equipment tests, Military standard tests, Susceptibility |
|
| Bird Corporation Avian Portable Ventilator, Model 15300, T&E identification Number 42 |
MAY 94 |
|
| Authors:
Martin D. Quattlebaum; James E. Bruckart; Joseph R. Licina; ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL
|
| The Bird Avian portable ventilator, Model 15300, was tested for environmental and electromagnetic interference/compatibility under the U.S. Army Program for Testing and evaluation of Equipment for Aeromedical Operations. The tests were conducted using current military and industrial standards and procedures. The Bird Avian ventilator was found compatible with the environmental tests after configuration changes. The unit may produce some electromagnetic emissions in excess of the military specification. Electromagnetic compatibility, Test ... |
|
Reports by Keyword(s)
ELECTROMAGNETIC COMPATIBILITY
