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Proceedings of the IEEE 1992 National Aerospace and Electronics Conference@m_NAECON 1992

18-22 May 1992

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  • Proceedings of the IEEE 1992 National Aerospace and Electronics Conference, NAECON 1992 (Cat. No.92CH3158-3)

    Publication Year: 1992
    Request permission for commercial reuse | PDF file iconPDF (171 KB)
    Freely Available from IEEE
  • Empirical evidence of bias in extended Kalman filters used for passive target tracking

    Publication Year: 1992, Page(s):393 - 398 vol.1
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    The bearings-only estimation problem and its application to the intercept of an aircraft target by an air-to-air missile are discussed. That is, how does one estimate the state of a system of a missile and a target (relative position, relative velocity, and target acceleration) in a plane with measurements of the line-of-sight (LOS) or bearing angle only? The ownship-to-target range is unobservabl... View full abstract»

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  • An overview of impulse radar phenomenon

    Publication Year: 1992, Page(s):320 - 326 vol.1
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    In the ideal situation, impulse radar has a fractional bandwidth of one, allowing it to combine low frequency with wide bandwidth giving at once high resolution and the ability to penetrate lossy materials. After having presented a theoretical definition of impulse radar, the author presents an overview of some issues concerning impulse waveforms on materials. An attempt is made to analyze such ph... View full abstract»

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  • A covariance analysis technique for the federated Kalman filter

    Publication Year: 1992, Page(s):399 - 406 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    A covariance analysis technique for the federated Kalman filter based on suboptimal system models is described. A review of the federated filter is given. Performance techniques for suboptimal filters are reviewed and extended to apply to the federated filter. A simple example is provided to demonstrate the technique. The results are compared with those from a Monte Carlo simulation for validation... View full abstract»

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  • Dynamically sensed mission sensor alignment

    Publication Year: 1992, Page(s):327 - 333 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    The dynamically sensed mission sensor alignment (DYSMAL) program seeks to verify the requirements for and define techniques which would enhance weapon system alignment, stabilization, and motion compensation accuracies of current and near-team sensor systems for current and near-term weapon systems. The first phase of this effort (DYSMAL1) addresses the magnitude and nature of misalignment, sensor... View full abstract»

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  • Statistical signal characterization-new help for real-time processing

    Publication Year: 1992, Page(s):121 - 127 vol.1
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    The author presents and explains statistical signal characterization (SSC), a technique by which certain easily measured time and amplitude attributes of a signal may be extracted and used to calculate a set of SSC parameters. It is shown how the SSC parameter extraction and statistical analysis processes can be accomplished at considerable savings in computational burden, compared to waveform pro... View full abstract»

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  • Circuit models of PWM DC-DC converters

    Publication Year: 1992, Page(s):407 - 413 vol.1
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    A systematic method is presented for including parasitic resistances and offset voltage sources of power switches into averaged dynamic large-signal, DC, and small-signal circuit models of PWM converters operating in continuous conduction mode. This method is based on the principle of energy conservation. It is shown that the equivalent circuits can be manipulated, using the reflection rule, to si... View full abstract»

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  • Applying variations of the quantitative feedback technique (QFT) to unstable, non-minimum phase aircraft dynamics models

    Publication Year: 1992, Page(s):334 - 341 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    Variations of the quantitative feedback technique (QFT) are applied to a multi-input-multi-output (MIMO) flight control problem with unstable, nonminimum phase plants. The authors present specialized techniques that enable the designer to achieve acceptable results for effective plants which are both unstable and non-minimum phase. The weighting matrix function is discussed, and a method of develo... View full abstract»

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  • A simple and recursive superresolution array processing

    Publication Year: 1992, Page(s):128 - 131 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (196 KB)

    The authors present an array processing method and its recursive form in the single snapshot case for spatial signal estimation. The method requires only simple computations, and is suitable for real-time processing because it does not require eigenvalue decomposition or other complicated computation. The problem is formulated in terms of a linear array composed of identical sensors View full abstract»

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  • Multirole flight management for the E-8C Joint STARS aircraft

    Publication Year: 1992, Page(s):523 - 527 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    The integration of the Collins FMS-800 into the USAF/Grumman E-8C Joint STARS aircraft provides great flexibility for mission and nonmission operations. The E-8C incorporates a multirole flight management system (FMS) which enables the flight crew to be functionally integrated with the primary mission crew and also supports reduced-crew operations for global support and ferry missions. The system ... View full abstract»

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  • Use of time varying dynamics in neural network to solve multi-target classification

    Publication Year: 1992, Page(s):414 - 420 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    Several types of solutions exist for multiple target tracking. These techniques are computation-intensive and in some cases very difficult to operate online. The authors report on a backpropagation neural network which has been successfully used to identify multiple moving targets using kinematic data (time, range, range-rate and azimuth angle) from sensors to train the network. Preliminary result... View full abstract»

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  • A full color AMLCD with NVG class B compatibility

    Publication Year: 1992, Page(s):1237 - 1241 vol.3
    Cited by:  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    The authors report on a full-color active matrix liquid crystal display with night vision goggles (NVG) compatibility. The display was a 5-in-diagonal high-resolution triad (RGB) color pixel with 80×180 color groups per inch (H/V). It had a specially designed high-brightness backlight with low profile and the NVG characteristics. The color coordinates of the unit were almost identical to the... View full abstract»

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  • Augmentation of a navigation reference system with differential global positioning system pseudorange measurements

    Publication Year: 1992, Page(s):342 - 348 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    To quantify the performance of navigation systems, the US Air Force has used a baseline navigation system, the Completely Integrated Reference Instrumentation System (CIRIS), which obtains an accurate navigation solution by combining information from three major subsystems. Although the navigation solution produced by CIRIS is accurate, it will soon be inadequate as the standard against which futu... View full abstract»

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  • Analysis of planar microstrip discontinuities in MMIC's

    Publication Year: 1992, Page(s):1274 - 1280 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    Planar microstrip discontinuities are analyzed by the full-wave, space-domain moment method at microwave and millimeter wavelengths. Redundant calculations in the moment matrix are eliminated by utilizing various symmetries. At lower microwave frequencies quasi-static approximations are invoked to simplify the analysis. Sample computed results are presented for the current distribution and the View full abstract»

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  • Digital extrapolation spectral analysis based on ARMA model

    Publication Year: 1992, Page(s):132 - 135 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    A digital extrapolation spectral analysis method based on an autoregressive moving average (ARMA) model is described. A time series is fitted by an ARMA model and the parameters by which the series can be linearly extrapolated are estimated. A discrete Fourier transformation is performed for the extrapolated data. Simulations indicate that this technique can achieve high resolution power and reduc... View full abstract»

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  • Design of the man-machine interface for an automatic target cuer system

    Publication Year: 1992, Page(s):691 - 697 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (556 KB)

    The authors explain the role of automatic target cuer (ATC) technology in crew-aided target acquisition systems. Requirements for such system concepts are developed with regard to the Automatic Target Recognizer Working Group. A process for designing the man-machine interface (MMI) for crew-aided systems is presented. The design and assessment of a specific, conceptual man-machine interface are de... View full abstract»

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  • Design of new optical fiber transceivers for a MIL-STD-1773 data bus

    Publication Year: 1992, Page(s):1186 - 1192 vol.3
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB)

    Several key issues on designing high-reliability optical fiber transmission system for MIL-STD-1773 data buses are investigated. Two novel optical modulation techniques which can efficiently solve the problems associated with the identification of correct states of optical transmitters are presented. The implementation of both schemes is considered. The selection of the optical devices and fibers,... View full abstract»

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  • Manufacturing application of case-based reasoning

    Publication Year: 1992, Page(s):855 - 859 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    The authors developed a computer system that used case-based reasoning to assist in the preparation of bids for manufactured parts. The system, Bidder's Associate, was developed within a business unit of a small manufacturer of jet engine parts. The approach was to study the decision processes of experienced engineers in preparing bids and then to develop a system to support these engineers. Bidde... View full abstract»

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  • Reliability assessment for self-repairing flight control systems

    Publication Year: 1992, Page(s):423 - 427 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    It is pointed out that by using aerodynamically redundant control surfaces a flight control system can be reconfigured in the event of actuator failure and/or surface damage. This feature is usually implemented through the use of an impairment detection, isolation, and accommodation (IDIA) scheme. The authors report two aspects of new development in reliability assessment for such self-repairing f... View full abstract»

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  • A large-area flat panel multi-function display for military and space applications

    Publication Year: 1992, Page(s):1242 - 1248 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    The Collins Avionics and Communications Division (CACD) of Rockwell International is developing a flat panel multifunction display (MFD) for military and space applications. The MFD offers the size and reliability benefits of liquid crystal display technology while achieving near-CRT display quality. CACD's experience in cockpit display systems has resulted in display generation algorithms that pr... View full abstract»

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  • Detection of radar signals using Gabor transform and neural network

    Publication Year: 1992, Page(s):916 - 922 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB)

    The detection of a one-dimensional radar signal is attempted by using the Gabor transform and artificial neural networks (ANNs). The Gabor transform scheme is a conjoint spatial/spectral transform, which provides a complete signal description in terms of locally windowed 1-D spectral coordinates. The neural network detector of a radar signal is quite effective because of its good learning properti... View full abstract»

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  • Society of Automotive Engineers AS-2 standardization activities

    Publication Year: 1992, Page(s):1076 - 1082 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    The Society of Automotive Engineers (SAE) Avionics Systems Division has been developing standards to meet the requirements of the aerospace community beginning with the development of MIL-STD-1553. In 1979, the SAE began to look at requirements for an avionics bus with performance which was substantially better than MIL-STD-1553B. The results of this work was the generation of two high-speed data ... View full abstract»

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  • Integrating controls and avionics on commercial aircraft

    Publication Year: 1992, Page(s):46 - 62 vol.1
    Cited by:  Papers (2)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (788 KB)

    The technologies, functions, and innovations which are likely to be incorporated into late 1990s commercial aircraft are reported, together with possible integration approaches. The author discusses integrated modular avionics within the context of controls and data transfer, power distribution and management, and cockpit navigation and sensing equipment. The optical propulsion management system (... View full abstract»

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  • Resonant sensors for high accuracy pressure measurement using silicon technology

    Publication Year: 1992, Page(s):349 - 355 vol.1
    Cited by:  Papers (2)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    A resonant element transducer has been developed for aerospace applications using micromachined silicon technology. The sensor is a beam supported over a square diaphragm. The resonant frequency of the beam is proportional to the applied pressure on the diaphragm. The authors describe the process of sensor construction, report on its physical characteristics, and summarize the performance evaluati... View full abstract»

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  • Contrasts: providing insight into the design of efficient industrial experiments

    Publication Year: 1992, Page(s):1043 - 1047 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    The use of contrasts as a design of experiments teaching tool is considered. The concept of contrasts and an application presented. The tool is useful in identifying an efficient set of experimental runs in what might otherwise be a full factorial experiment. Contrasts may also be used to analyze the data that come out of the experiment. The easiest way to learn about contrasts is by applying them... View full abstract»

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