Scientific and Technical Aerospace Reports Volume 38 July 28, 2000

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A monolithic W-band three-stage Low Noise Amplifiers (LNA) based on 0.1 um pseudomorphic InAlAs/InGaAs/InP (High Electron Mobility Transistors (HEMTs) has been developed. this LNA demonstrated a noise figure of 4.3 dB and an associated small signal gain of 19 dB at 100 GHz with a low dc power consumption of 20 mW. This is the best reported monolithic W-band LNA performance using InP-based HEMT technology and demonstrates the potential of InP HEMT technology for higher millimeter-wave applications. Author High Electron Mobility Transistors; Indium Aluminum Arsenides; Indium Gallium Arsenides; Indium Phosphides; Low Noise; Amplifiers; Integrated Circuits 20000063389 Sterling Software, Inc., Information Technology Div., Rome, NY USA GCCS Spatial Data Base Module Extensions Final Report, Jun. 1996 - Jul. 1997 Bell, Paul; Kolassa, David; McQuinn, Michael; Stoltz, Sandra; Reid, William; Jul. 1998; 40p; In English Contract(s)/Grant(s): F30602-94-D-0007; AF Proj. R533 Report No.(s): AD-A377240; AFRL-IF-RS-TR-1998-158; No Copyright; Avail: CASI; A03, Hardcopy; A01, Microfiche The Global Command and Control Systems (GCCS) is the DoD’s primary joint command, control, communications, computer, and intelligence systems. The Joint Mapping Toolkit (JMTK) provides the mapping function to the Core Operating Environment (COE) of the GCCS. JMTK is divided into three primary areas: (1) Visual, (2) Analysis (nonvisual), and (3) Spatial Data Base (SDBM). The primary objective of the SDBM effort is to define, design, develop and test mapping, charting and geodesy (MC&G) spatial data base management and data access software for the inclusion as the SDBM of the GCCS COE JMTK. The SDBM contains the following capabilities: Import NIMA data in standard formats (VPF, RPF, DTED, ITD); archive NIMA data in the original format without reformatting any data (preprocessing); and provide data access and retrieval through the use of public API functions. DTIC Command and Control; Communication; Computers; Artificial Intelligence 20000063492 NASA Lewis Research Center, Cleveland, OH USA Development of Leaky Wave Antennas for Layered Ridge Dielectric Waveguide Ponchak, George E., NASA Lewis Research Center, USA; Katehi, Linda P. B., Michigan Univ., USA; [1993]; 4p; In English; 1993 International Symposium, 28 Jun. - 2 Jul. 1993, Baltimore, MD, USA; Sponsored by Institute of Electrical and Electronics Engineers, USA Contract(s)/Grant(s): RTOP 632-6E-51; No Copyright; Avail: CASI; A01, Hardcopy; A01, Microfiche The millimeter wave, especially above 100 GHz, and the submillimeter wave frequency spectrum offers the possibility for narrow-beam, high-resolution antennas which are critical for high definition radars required for space debris tracking, airport ground avoidance radars, and missile tracking. In addition, the frequency which most atmospheric constituents may be detected lie in this part of the frequency spectrum. Therefore, the development of electronic components for millimeter/submillimeter wave passive sensors is required for environmental monitoring of the Earth’s atmosphere. Typical microwave transmission lines such as microstrip and coplanar waveguide rely on two or more electrical conductors to concentrate and guide the electromagnetic energy. Unfortunately, the surface resistance of the conductors increases as the square root of frequency. In addition, the circuit dimensions must be decreased with increasing frequency to maintain a single mode transmission line which further increases the conductor loss. An alternative family of transmission lines are formed from two or more insulating materials and rely on the differences in the permittivities between the two materials to guide the wave. No metal conductors are required although some dielectric waveguides do utilize a metallic ground plane to facilitate the interconnections of active electrical elements or to reduce the transmission line size. Examples of such transmission lines are image guides, insulated image guides, trapped image guides, ridge guide, and layered ridge dielectric waveguide (LRDW). Although most dielectric waveguides have dimensions on the order of lambda to provide sufficient field confinement, the LRDW has been shown to provide good field confinement for electrically small lines. This offers an advantage in circuit integration. It has been shown that a periodic array of metallic strips placed either along or on top of a dielectric waveguide forms an effective radiator. This antenna is easy to fabricate and there is good background of microstrip type antenna design information in the literature. This paper reports the development of the first frequency scanning antenna fed by a LRDW. Derived from text Dielectric Waveguides; Millimeter Waves; Submillimeter Waves; Transmission Lines; Microwaves; Waveguide Antennas; Microwave Transmission 64
20000064078 Physics and Electronics Lab. TNO, The Hague, Netherlands Meeting the Needs for Mobile Communication within TCIS Final Report Invulling van de Mobiele Communicatiebehoefte in TCIS vanDam, C., Physics and Electronics Lab. TNO, Netherlands; October 1999; 68p; In Dutch Contract(s)/Grant(s): A99/KLu/789; TNO Proj. 28720 Report No.(s): TD-99-0254; FEL-99-A236; Copyright; Avail: Issuing Activity The goal of this report is to give support to the Royal Netherlands Air Force when making a choice for meeting the needs for mobile communication of the Tactical Helicopter Group in Out-of-Area operations. For this purpose a review has been made of the possibilities of and differences between GSM and TETRA systems. Topics such as frequency usage, functionality and services are discussed extensively. It has also been investigated which system complies with military desires on functionalities such as vulnerability, transportability and security. Finally, a calculation was made of the way in which coverage of the staging area can be realised. Author Mobile Communication Systems; Frequencies; Security; Vulnerability 20000064103 New Mexico State Univ., Klipsch School of Electrical and Computer Engineering, Las Cruces, NM USA Three Corner Sat Communications System Anderson, Bobby, New Mexico State Univ., USA; Horan, Stephen, New Mexico State Univ., USA; Jun. 08, 2000; 150p; In English Contract(s)/Grant(s): F29601-98-D-0210; F49620-99-1-0194; NAG2-7520 Report No.(s): NMSU-ECE-00-009; No Copyright; Avail: CASI; A07, Hardcopy; A02, Microfiche Three Corner Satellite is a constellation of three nanosatellites designed and built by students. New Mexico State University has taken on the design of the communications system for this constellation. The system includes the forward link, return link, and the crosslink. Due to size, mass, power, and financial constraints, we must design a small, light, power efficient, and inexpensive communications system. This thesis presents the design of a radio system to accomplish the data transmission requirements in light of the system constraints. In addition to the hardware design, the operational commands needed by the satellite’s on-board computer to control and communicate with the communications hardware will be presented. In order for the hardware to communicate with the ground stations, we will examine the link budgets derived from the radiated power of the transmitters, link distance, data modulation, and data rate for each link. The antenna design for the constellation is analyzed using software and testing the physical antennas on a model satellite. After the analysis and testing, a combination of different systems will meet and exceed the requirements and constraints of the Three Corner Satellite constellation. Author Satellite Communication; Design Analysis; Satellite Constellations; Fabrication; Nanosatellites; Crosslinking; Airborne/Spaceborne Computers 20000064112 NASA Glenn Research Center, Cleveland, OH USA A K-Band Linear Phased Array Antenna Based on Ba(0.60)SR(0.40)TiO3 Thin Film Phase Shifters Romanofsky, R., NASA Glenn Research Center, USA; Bernhard, J., Illinois Univ., USA; Washington, G., Ohio State Univ., USA; VanKeuls, F., Ohio Aerospace Inst., USA; Miranda, F., NASA Glenn Research Center, USA; Cannedy, C., Maryland Univ., USA; May 2000; 10p; In English; Microwave, 11-13 Jun. 2000, Boston, MA, USA; Sponsored by Microwave Theory and Techniques Society, USA Contract(s)/Grant(s): RTOP 632-6E-51 Report No.(s): NASA/TM-2000-210049; E-12195-1; NAS 1.15:210049; No Copyright; Avail: CASI; A02, Hardcopy; A01, Microfiche This paper summarizes the development of a 23.675 GHz linear 16-element scanning phased array antenna based on thin ferroelectric film coupled microstripline phase shifters and microstrip patch radiators. Author Antenna Arrays; Microstrip Antennas; Fabrication; Scanners 20000064695 Institute for Human Factors TNO, Soesterberg, Netherlands Evaluation of the Workshop on Search and Target Acquisition Interim Report Toet, A., Institute for Human Factors TNO, Netherlands; Oct. 05, 1999; 23p; In English Contract(s)/Grant(s): A98/KL/316; TNO Proj. 786.1 Report No.(s): TD-99-0342; TM-99-A064; Copyright; Avail: Issuing Activity 65
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Scientific and Technical Aerospace
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Introduction Scientific and Technic
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Subject Divisions Table of Contents
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ground equipment and systems. For a
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Subject Categories of the Division
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48 Oceanography 139 Includes the ph
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72 Atomic and Molecular Physics 191
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Document Availability Information T
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Avail: NASA Public Document Rooms.
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NASA CASI Price Tables — Effectiv
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ALABAMA AUBURN UNIV. AT MONTGOMERY
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��
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20000061433 Pisa Univ., Dipartiment
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English; 34th; 34th Thermophysics C
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ciency of the generated derivative
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20000063509 NASA Glenn Research Cen
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05 AIRCRAFT DESIGN, TESTING AND PER
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Page 61 and 62: necessary for ignition modeling, or
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Page 67 and 68: ments. For the screening of liner m
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Page 79 and 80: Spacecraft in low Earth orbit (LEO)
Page 81 and 82: Pressure gradients, i.e. pressure h
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Page 119 and 120: 20000064621 Rensselaer Polytechnic
Page 121 and 122: that for a specific example of a be
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Page 125 and 126: 20000064527 Analytical Imaging and
Page 127 and 128: 20000064533 Austin State Univ., Dep
Page 129 and 130: 20000064539 California Univ., Inst.
Page 131 and 132: 20000064547 Jet Propulsion Lab., Ca
Page 133 and 134: in Yellowstone National Park. We ar
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20000064565 Jet Propulsion Lab., Ca
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tion model (DEM) fitting to the sca
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The Carolina slate belt is a 10- to
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20000063373 Los Alamos National Lab
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20000064912 New Energy and Industri
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and discusses the issues and resear
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The objective of this study was to
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distributions with engine test resu
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7.6, while the 1926 events appear t
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We investigate the compositional di
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Flight Center, USA; Moore, T. E., N
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This report presents the Applied Me
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in Goa, India, by 3 - 4 days. Wind
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51 LIFE SCIENCES (GENERAL) Includes
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20000062717 Joint Inst. for Nuclear
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20000064015 Institute for Human Fac
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during 50% (SD 4%) of the breathing
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20000064711 Massachusetts Inst. of
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The analysis of this smaller data s
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vided a functional helmet mount. Th
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61 COMPUTER PROGRAMMING AND SOFTWAR
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The goal of multi-image classificat
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20000063526 Defence Science and Tec
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85 dB amplifier design evolved by o
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20000064594 New Mexico Univ., Elect
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20000064615 NASA Ames Research Cent
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declarations with a pattern recogni
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containing point where interpolatio
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has his own responsibility, while t
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the people, documents and projects
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and experimental technology, many o
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tems. In particular this applicatio
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Over the past decade, high performa
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expensive than a single analysis. I
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20000064726 Carnegie-Mellon Univ.,
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20000064099 Teledyne Brown Engineer
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20000066597 Geophysical Observatory
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20000065633 Institute TNO of Applie
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important conclusion is that for su
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est frame of the string. The modifi
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isotopes. The method and program we
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A detailed study is undertaken, usi
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20000063497 Kaiser Electro-Optics,
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delivers 60% of the x-ray flux from
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76 SOLID-STATE PHYSICS ��
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20000064660 Abdus Salam Internation
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20000067648 NASA Marshall Space Fli
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20000064703 Institute of Atomic Ene
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The BRST approach is applied to the
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20000067671 Hampton Univ., VA USA A
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82 DOCUMENTATION AND INFORMATION SC
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ecoming almost too cumbersome to be
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physical world. These are the two p
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with WFPC2 data. Tests of HSTphot
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A brief description is given of the
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20000064070 NASA Ames Research Cent
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gas, show variations that have rema
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egy, called Power In that would all
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20000065631 NASA Kennedy Space Cent
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20000064089 Smithsonian Astrophysic
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A ABERRATION, 143, 198 ABRASION, 22
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COMPRESSIBLE FLOW, 83 COMPRESSION L
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FATIGUE (MATERIALS), 50, 93, 96 FAT
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LASING, 90 LATE STARS, 224 LATITUDE
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PATCH ANTENNAS, 74 PATHOLOGY, 98 PA
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SPACE PLATFORMS, 38 SPACE PROBES, 2
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WIND PROFILES, 137 WIND TUNNEL TEST
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Brown, Andy, 38 Brown, April S., 20
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Grosvenor, C. A., 70 Grosvenor, J.
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Lu, Gui-Ying, 50 Lugg, Desmond J.,
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Robertson, Tony, 39 Robinson, Jeffr
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Warner, J. D., 63 Warren, James, 16
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