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Aerospace and Electronics Conference, 1994. NAECON 1994., Proceedings of the IEEE 1994 National

23-27 May 1994

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Displaying Results 1 - 25 of 199
  • Proceedings of National Aerospace and Electronics Conference (NAECON'94)

    Publication Year: 1994
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    Freely Available from IEEE
  • More electric initiative-power-by-wire actuation alternatives

    Publication Year: 1994, Page(s):1338 - 1346 vol.2
    Cited by:  Papers (13)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (736 KB)

    The potential benefits of Power-By-Wire (PBW) actuation and utility systems and the use of this technology in concert with Fly-By-Wire (FBW) or Fly-By-Light (FBL) have been discussed and well documented by many subsystem and aircraft manufacturers. This paper attempts to reveal the status and capability of past, present, and planned development by Lucas Aerospace of hardware aimed to support the o... View full abstract»

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  • Ultra-reliable digital avionics (URDA) processor architecture

    Publication Year: 1994, Page(s):274 - 280 vol.1
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    The objective of the URDA program is to develop a prototype advanced development model (ADM) processor that combines a data processor, signal processor, memory and system interface on a single SEM-E avionics card. TI's approach integrates two Ada-programmable, URDA basic processor modules (BPMs) with a JIAWG-compatible PiBus and TMBus onto a common SEM-E format ADM module and provides a separate, ... View full abstract»

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  • The multimode array-improved versatility through enhanced SAR

    Publication Year: 1994, Page(s):151 - 155 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    Today's military aircraft must carry out various missions, some of them simultaneously. Consequently, antennas must be designed with the capability to function in a multiplicity of simultaneous as well as switchable modes. Slotted flat-plate arrays, with their unique ability to divide available aperture space among several antenna requirements, have become increasingly popular. Several recent desi... View full abstract»

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  • Report on future mapping, charting, and geodesy digital information and services available from the Defense Mapping Agency

    Publication Year: 1994, Page(s):281 - 288 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB)

    The Defense Mapping Agency's (DMA) mission is to provide Mapping, Charting, and Geodetic (MCandG) information and services to the US Armed Forces. DMA's products range from paper maps and charts (including topographic maps, nautical and aeronautical charts and publications) to various digital databases (including Digital Terrain Elevation Data and Digital Chart of the World). It is in the digital ... View full abstract»

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  • High resolution 2-D ISAR image collection and processing

    Publication Year: 1994, Page(s):371 - 377 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    This paper goes into the practical and theoretical foundations of 2-D ISAR (inverse synthetic aperture radar) image collection and processing. Its application to validate high definition aircraft geometry models is also discussed. The ISAR data is collected by a Ground-to-Air Measurement System (GTAMS) at Tyndall Air Force Base, Florida. The GTAMS System consists of a ultra high range resolution (... View full abstract»

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  • National PARC (NPARC) alliance

    Publication Year: 1994, Page(s):926 - 931 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    NASA Lewis Research Center and the Arnold Engineering Development Center (AEDC) have developed a revolutionary alliance for the joint management of an application CFD tool. By leveraging each center's expertise and involving the aerospace industry, this alliance promises to produce a cost-effective tool for both industry and government application. This paper describes the structure, policies, and... View full abstract»

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  • Risk management for the B-1B computer upgrade

    Publication Year: 1994, Page(s):1143 - 1149 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    The B-1B has received a great deal of criticism since it was first fielded in 1985. Much of this criticism, deserved or not, was the result of perceived shortcomings in the avionics system-especially the Defensive Avionics System. These shortcomings were largely the result of software deficiencies, the B-1B is now entering a conventional mission upgrade, which will include replacing some of the co... View full abstract»

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  • A mission management system architecture for cooperating air vehicles

    Publication Year: 1994, Page(s):156 - 163 vol.1
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (684 KB)

    A mission management system comprises the processes that perform tactical decision making tasks for an unmanned vehicle system. As such, it is the primary determinant of the range of realizable behaviors, versatility and ultimately the operational effectiveness of any class of Unmanned Air Vehicles (UAVs). The Mission Management System (MMS) project is an on-going program to develop a unified syst... View full abstract»

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  • Performance analysis of the ternary amplitude modulated binary phase only filter

    Publication Year: 1994, Page(s):289 - 294 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    An optical pattern or character recognition operation may consist of matching either amplitudes, or phases, or both, The amplitude-modulated phase-only filter (AMPOF), in particular, effectively utilizes both amplitude and phase information to obtain a narrower and larger autocorrelation peak. However, as with any continuous-valued filters, the AMPOF function is not readily suitable for real-time ... View full abstract»

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  • Efficient resonant frequency-doubling in semiconductor multilayers

    Publication Year: 1994, Page(s):520 - 524 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    We propose efficient frequency doubling in semiconductor multilayers. When the fundamental beam is coupled into the waveguide propagating along the multilayer plane, second-harmonic light emits from the the surface of the multilayer structures, normal to the propagation direction of the fundamental beam. The quasi-phasematching is achieved by growing alternating thin layers in which a single unit ... View full abstract»

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  • Rapid and accurate timing simulation of radiation-hardened digital microelectronics using VHDL

    Publication Year: 1994, Page(s):378 - 385 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB)

    The development of a fast, yet accurate, timing simulation capability based on VHSIC Hardware Description Language (VHDL) without the use of back annotation of timing delay information is presented. This simulator is intended, primarily, for use with radiation-hardened microelectronic circuits in simulating timing of circuit operation in the pre-radiation and post-radiation environment. Additional... View full abstract»

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  • A proposed real-time ADA test

    Publication Year: 1994, Page(s):932 - 936 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    System developers use a variety of benchmarks to evaluate the performance of a new system, as well as mature the hardware and software. A computer system, in this context, includes the processing hardware as well as the Ada Run Time System. The integration of these elements is incremental and the system matures as software applications of different types run an the computer. Therefore, a wide spec... View full abstract»

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  • Evaluation of compressed synthetic aperture radar imagery

    Publication Year: 1994, Page(s):319 - 326 vol.1
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    Three widely employed image compression techniques (Discrete Cosine Transform, DCT; Block Truncation Code, BTC; and Vector Quantization, VQ) were applied to 23 high resolution synthetic aperture radar images (SAR). Image quality metrics (Impulse Response, IPR, and Contrast Ratio, CR) were applied to the original (uncompressed) and the processed (compressed/reconstructed) images. Image fidelity mea... View full abstract»

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  • Detecting low-intensity magnetic fields with a magnetostrictive fiber optic sensor

    Publication Year: 1994, Page(s):1034 - 1039 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    A magnetostrictive fiber optic Mach-Zehnder interferometric sensor that detects low-intensity magnetic fields was realized. The sensor utilizes 850 nm single-mode fiber optic cable and couplers. Four classes of sensing arms were fabricated by coupling the magnetostrictive materials to a length of fiber optic cable as: ribbons, cylinders, sandwiches, and sputter coated sheaths. The sensing arms wer... View full abstract»

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  • High-resolution estimation and on-line monitoring of natural frequency of aircraft structure specimen under random vibration

    Publication Year: 1994, Page(s):468 - 474 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    The growth of structural damage reduces the stiffness which results in decrease in the natural frequency of a specimen (coupon) under random vibration. However, the identification of the natural frequency is not a trivial problem because the coupons are shaken in a random fashion in which many closely-spaced frequencies are involved. The signal may have other redundant frequencies involved which a... View full abstract»

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  • Integration of the AN/ALQ-131(V) electronic countermeasures pod on tactical aircraft using a MIL-STD-1553B interface

    Publication Year: 1994, Page(s):1150 - 1157 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB)

    This paper describes the development and integration of a MIL-STD-1553B interface for the AN/ALQ-131(V) Terminal Threat Electronic Countermeasures (ECM) pod. Integrated circuit devices and the Ada programming language were used to develop a low risk, highly flexible design. The fully programmable interface can communicate with any aircraft electronic system with a MIL-STD-1553B interface. Potentia... View full abstract»

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  • A look at the radio frequency susceptibility of commercial GPS receivers

    Publication Year: 1994, Page(s):164 - 170 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    The radio frequency (RF) susceptibility characteristics of two commercial Global Positioning System (GPS) receivers were evaluated. A first-order analysis was performed to predict the receiver susceptibility thresholds based on the receiver sensitivity and processing gain. The receiver susceptibility thresholds in the post-acquisition mode were then measured for various interference signal frequen... View full abstract»

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  • Detecting and tracking of a moving point target in space-based background with low signal to noise ratio

    Publication Year: 1994, Page(s):295 - 302 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    The technique of detecting and tracking of a moving point target in space-based background with low SNR is analysed in this paper. An efficient method for detecting low speed target is presented. The method simply uses multi-frame accumulating as the main operation to improve the output SNR. And it introduces candidate target records for target matching and recognition. The method is easy for hard... View full abstract»

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  • Real-time parameter identification for self-designing flight control

    Publication Year: 1994, Page(s):526 - 531 vol.1
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    A self-designing flight control system (SDFCS) could provide a cost-effective means for developing controllers for new aircraft by eliminating analyst-intensive design of numerous individual controllers, each optimized for a single flight condition. Additionally, the SDFCS could improve the capabilities of existing aircraft by enhancing control performance in new flight regimes such as high angle-... View full abstract»

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  • A new method of demultiplexing

    Publication Year: 1994, Page(s):452 - 454 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (112 KB)

    In this paper, based on the copy feature of Walsh functions and symmetry copy analysis, a new method of demultiplexing, which is used in the telemetry systems, is proposed, and the performance evaluation by computer simulation is discussed too View full abstract»

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  • Estimating true altitude of a track from local 3-D Cartesian coordinates of a radar

    Publication Year: 1994, Page(s):1014 - 1017 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (156 KB)

    Estimating the true altitude of a track from 3-dimensional Cartesian coordinates of a radar has always been a challenge. In the early days of radar a 4/3 earth-radius refraction model algorithm was sufficient to describe the altitude of a track, since planes didn't fly too high and radars had less power and range. Many present radars track objects outside the limits of this simple model and better... View full abstract»

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  • Path planning problems and solutions

    Publication Year: 1994, Page(s):105 - 108 vol.1
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    Path planning has been atopic of research in many areas including robotics and navigation. The purpose of this paper is to explore the problems of three-dimensional path planning in the context of a point-like airplane traveling to avoid circular danger regions. We will explore two distinct problems. The first problem is how to plan a path when the locations of all the dangers are known. The solut... View full abstract»

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  • Mutual coupling calibration using a single source in near field

    Publication Year: 1994, Page(s):424 - 426 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (128 KB)

    In this paper a mutual coupling calibration method suitable for uniform linear arrays (ULA) and circular arrays (UCA) is presented where only one known calibration source in the near field is necessary for effective calibration. The paper has also discussed the position error influence of the source on the calibration, and the optimum azimuth of the source is analyzed. Finally some simulation resu... View full abstract»

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  • Design and analysis of an integrated targeting system

    Publication Year: 1994, Page(s):937 - 944 vol.2
    Cited by:  Papers (2)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (508 KB)

    This paper presents the design and analysis of integrating global positioning system (GPS), inertial navigation system (INS), and synthetic aperture radar (SAR). The intent of this research is to predict the performance of the proposed targeting system. The analysis presented here is based on a well-tuned, full-order extended Kalman filter. The targeting aspects of the integrated INS, GPS, and SAR... View full abstract»

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