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
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    Freely Available from IEEE
  • Analog and leaky predictive transform image coding for noisy channels: further results

    Publication Year: 1992, Page(s):163 - 171 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (840 KB)

    Results are reported for a minimum mean squared error (MSE) analog predictive transform (APT) channel and source integrated (CSI) coding formulation. A novel refined CSI coding formulation is provided; it has a structure similar to that of a minimum MSE predictive transform (PT) estimator. This formulation assumes that the communication channel consists of zero mean additive white noise, that the ... View full abstract»

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  • An ultrahigh-speed large capacity radar data acquisition system

    Publication Year: 1992, Page(s):172 - 174 vol.1
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (132 KB)

    An ultrahigh-speed large capacity radar data acquisition system has been developed. This system achieves 150 MSPS (mega samples per second). The acquisition system also includes a high-speed 512 k×8 bit data buffer memory which is useful in longtime data acquisition applications such as radar signal acquisition and wideband noise analysis. The data can be transferred to the computer through ... View full abstract»

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  • Target detection and recognition based on dynamic processing techniques

    Publication Year: 1992, Page(s):175 - 181 vol.1
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (532 KB)

    The authors present a general structure for dynamic information processing systems. Some principle ideas for dynamic processing techniques are emphasized by two practical applications in the radar signal processing field. The first is radar weak target detection under strong sea clutter, and the second is radar ship target recognition. The corresponding practical detection system and the ship targ... View full abstract»

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  • Determining the track of a moving object by Kalman and bootstrap method with multisensor data

    Publication Year: 1992, Page(s):388 - 392 vol.1
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (240 KB)

    Because data from multiple sensory sources always includes system errors and random errors, the estimation precision of the track is affected. A method which can reduce those two kinds of errors is presented. The method considers the data from two measuring sources. Kalman filtering theory is used to estimate the system errors of the two instruments. System errors are then compensated. As a result... View full abstract»

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  • Autonomous aerial vehicle development

    Publication Year: 1992, Page(s):872 - 875 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (268 KB)

    On July 29, 1991 the First International Aerial Robotics Competition was held at Georgia Technological Institute in Atlanta, Georgia. Teams entering the contest were to have an aerial vehicle which could autonomously perform a preset task within an outdoor antenna. The overall goal of this contest is to promote communication between young engineers and corporate sponsors. The rules of the competit... 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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  • Computer generated moire interferometry

    Publication Year: 1992, Page(s):1193 - 1199 vol.3
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1692 KB)

    The use of computer-generated moire fringes to characterize object shapes is discussed. The goal was to determine the feasibility of generating a reference image which, when combined with an image of a perfect test object, would produce straight line fringes, but when combined with an imperfect test object, would produce predictable deviations from straight-line fringes. The authors explain the th... View full abstract»

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  • Device specific modelling of the nonlinear joint transform correlator using LCLV

    Publication Year: 1992, Page(s):1135 - 1138 vol.3
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (216 KB)

    Introduces a real-time nonlinear device such as a liquid crystal light valve (LCLV) which serves as a detector as well as a nonlinear threshold device. Unlike other previous methods, no optic-to-electronic-to-optic conversion is necessary, since the function of the square law detector is performed by the LCLV as required by joint Fourier transform. Nonlinearity was introduced via an optically addr... View full abstract»

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  • Application of modular avionics to the EF-111A systems improvement program

    Publication Year: 1992, Page(s):182 - 186 vol.1
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (208 KB)

    IBM has been selected by Grumman to supply embedded processor sets (EPSs) for the EF-111A system improvement program. These EPSs utilize modular avionics technology to provide data processing and MIL-STD-1553 I/O for several avionics units in the system. Existing modules developed under the F-15 VHSIC central computer program are reused for EF-111A, thereby maximizing logistics benefits and reduci... 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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  • 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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  • Achieving high reliability and quality in the acquisition of US DoD electronics

    Publication Year: 1992, Page(s):1007 - 1012 vol.3
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (432 KB)

    Describes a study effort to develop a handbook that provides guidelines to enable significant and continuous improvement in the reliability and quality of acquisition of US Department of Defense (DoD) electronic systems. The guidelines will focus on describing a new proactive role for reliability engineering which will help ensure built-in reliability. The program consists of the following major t... View full abstract»

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  • Society of Automotive Engineers-avionic systems division activities

    Publication Year: 1992, Page(s):1083 - 1089 vol.3
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (452 KB)

    The Avionic Systems Division (ASD) of the Society of Automotive Engineers (SAE) has been involved in the development, review, and support of military standards for over the past twenty years. The author describes the present organization and activities of the ASD and the services provided. Some of the successes within the standardization efforts are highlighted. The methodology and techniques for ... View full abstract»

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  • Incoherent radar target recognition using semi-fuzzy clustering

    Publication Year: 1992, Page(s):265 - 269 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (312 KB)

    The problem of incoherent radar target recognition is discussed. A feature extraction algorithm is presented based on an AR model and optimal discriminant subspace, and a classification algorithm for the extracted features is proposed using semi-fuzzy clustering. An experimental automatic incoherent radar ship target recognition system is implemented with the proposed algorithms, and results are i... View full abstract»

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  • Vibration control of flexible manipulators

    Publication Year: 1992, Page(s):876 - 882 vol.3
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (400 KB)

    The authors present a comparative study of two vibration reduction schemes for flexible manipulators. The two methods under consideration are the command preshaping technique and the feedforward control technique. The first method limits vibrations in the system by shaping the system inputs. The second method uses the inverse arm approach to reduce vibrations. It is also shown that the first metho... View full abstract»

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  • TEAMS: technical expert aircraft maintenance system

    Publication Year: 1992, Page(s):960 - 964 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (368 KB)

    The technical expert aircraft maintenance system (TEAMS) is an interactive system that supports the diagnosis of problems on new aircraft. The system uses expert system technology to provide the aircraft mechanic with the knowledge and experience needed to successfully repair an aircraft. TEAMS consists of a number of expert-system modules. The authors give an overview of the TEAMS effort, a descr... View full abstract»

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  • Compensation of selected availability using a GPS/INS extended Kalman filter

    Publication Year: 1992, Page(s):356 - 362 vol.1
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (544 KB)

    The authors describe research to compensate for selected availability (SA) corruption by modifying the Kalman filter used in a typical Global Positioning System/inertial navigation system (GPS/INS) integration. Two modified filters are developed: one filter that models SA using individual error-states and another filter that compensates for SA by increasing the measurement noise. Neither of these ... View full abstract»

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  • An evaluation of miniaturized aircraft keyboards

    Publication Year: 1992, Page(s):698 - 7404 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (612 KB)

    A study was conducted to examine the accuracy of the keyboard requirements of MIL-STD-1472D and to assess the consequences of operating an aircraft keyboard which was reduced in size to values below the requirements of the military standard. Four keyboard configurations were examined: key size and separation within MIL-STD-1427D requirements: key size and separation within the requirements, with k... View full abstract»

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  • CADEYES-a three dimensional gage

    Publication Year: 1992, Page(s):1200 - 1204 vol.3
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1132 KB)

    Using moire interferometry, the authors have created a camera in which each pixel measures an absolute depth with up to 13 bits of dynamic range. The CADEYES camera system extracts depth interferometry by combining moire interferometry with sophisticated image processing techniques. CADEYES is a commercially available noncontact measurement system offering the advantage of high accuracy, full-fiel... View full abstract»

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  • A comparative study of digital halftoning techniques

    Publication Year: 1992, Page(s):1139 - 1145 vol.3
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (632 KB)

    Digital half-toning, also known as spatial dithering converts a gray scale image into bilevel output for graphical devices such as cathode ray tube (CRT) monitors or laser printers. The author surveys several digital half-toning techniques such as ordered dithering, error diffusion, and a dithering scheme along the path of a special class of fractals, namely space-filling curves. A comparative stu... View full abstract»

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  • Decentralized arbiter design for a synchronous hierarchical bus multiprocessor system

    Publication Year: 1992, Page(s):187 - 192 vol.1
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (364 KB)

    A two-level decentralized bus arbitration network for a hierarchical bus system is developed. To achieve distributed control and ensure fairness among the competing processors, the rotating daisy chain implementation scheme is used in this design. The authors discuss the hierarchical bus system (HBS) architecture, the HBS arbitration algorithm, the generation of bus requests through the processor ... 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 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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  • A visit to project software libraries with the eyes of software quality

    Publication Year: 1992, Page(s):1015 - 1017 vol.3
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    The author highlights the structure of, the progression of, the changes to, the controls, needed, and the overall psychology of a proper project software library. Project software libraries can exist in a combination of forms and can be partitioned into several levels. As the project progresses, more information becomes available. The originators, customers, or any interested party can propose cha... View full abstract»

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