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IEEE Transactions on Aerospace and Electronic Systems

Issue 5 • Date Sept. 1986

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Displaying Results 1 - 25 of 29
  • Table of contents

    Publication Year: 1986, Page(s): c1
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  • IEEE Aerospace and Electronic Systems Society

    Publication Year: 1986, Page(s): c2
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  • From the Editors

    Publication Year: 1986, Page(s): 485
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  • Land Warfare - A 'classic' paper

    Publication Year: 1986, Page(s): 486
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  • Land Warfare

    Publication Year: 1986, Page(s):487 - 512
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (14022 KB)

    The future conflicts that our nation may have to fight are more likely to be tactical than strategic. Land warfare forces, including the related elements of Tacair, play a pivotal role in our tactical combat capabilities, as evidenced by the fact that in World War II German production of virtually all critical material was still continuing to increase until Germany was on the verge of being physic... View full abstract»

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  • Radar Detection of Correlated Targets in Clutter

    Publication Year: 1986, Page(s):513 - 532
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3014 KB)

    This paper provides general models of radar echoes from a target. The rationale of the approach is to consider the echoes as the output of a linear dynamic system driven by white Gaussian noise (WGN). Two models can be conceived to generate N target returns: samples generated as a batch, or sequentially generated one by one. The models allow the accommodation of any correlation between pulses and ... View full abstract»

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  • A Nonlinear Tracker Using Attitude Measurements

    Publication Year: 1986, Page(s):533 - 539
    Cited by:  Papers (33)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1658 KB)

    The subject of this paper involves tracking the present position of a maneuvering aircraft as well as predicting its future position. A tracking filter is developed that uses aircraft attitude angles (yaw, pitch, roll) in addition to the usual radar measurements. Computer simulation of tracker performance when tracking violently maneuvering aircraft indicates that a dramatic improvement is obtaine... View full abstract»

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  • IGT/COMFET Latching Characteristics and Application to Brushless DC Motor Drive

    Publication Year: 1986, Page(s):540 - 544
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2446 KB)

    Various factors affecting the device latching current level were investigated. Results of applying the devices for driving a 340 V, 10 A brushless dc motor are presented. Recommendations to the device manufacturers, from the user's point of view, are summarized. View full abstract»

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  • A Digital Incremental Oscillator: Generation of Sinusoidal Waveform in DPCM

    Publication Year: 1986, Page(s):545 - 553
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1737 KB)

    Based on the concept of incremental computations, a digital oscillator structure is proposed which consists of two incremental integrators and one incremental multiplier. Models for these elements are developed and detailed analyses are made showing that the errors of the proposed structure are extremely low compared with the direct-form one. The proposed oscillator structure can be implemented wi... View full abstract»

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  • Carrier Tracking by Smoothing Filter Improves Symbol SNR

    Publication Year: 1986, Page(s):554 - 558
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1318 KB)

    The potential benefit of using a smoothing filter to estimate a carrier phase over use of phase-locked loops (PLL) is determined. Numerical results are presented for the performance of three possible configurations of an all-digital coherent demodulation receiver. These are residual carrier PLL, sideband-aided residual carrier PLL, and finally sideband aided with Kalman smoother. The average symbo... View full abstract»

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  • Experimental Detection of Anomalous Mode-C Reports Using Radar Data

    Publication Year: 1986, Page(s):559 - 564
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1490 KB)

    A new methodology to scan automated radar terminal system (ARTS-III) data for aircraft tracks exhibiting probable mode-C encoder/transponder faults is described. The tracks of more than 8000 climbing or descending aircraft, recorded at the Seattle-Tacoma terminal area, were analyzed using this method. Based on this sample, the probability of the previously recognized "stuck C-bit" error is estimat... View full abstract»

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  • Rotary Transformer Design with Fixed Magnetizing and/or Leakage Inductances

    Publication Year: 1986, Page(s):565 - 572
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3229 KB)

    A design algorithm is considered for transformers that must transfer electric power across a rotating interface. Among other features, this procedure allows the designer to minimize either weight or losses for either a fixed magnetizing inductance or a fixed leakage inductance. Numerical results are included to indicate the design tradeoffs between various parameters. View full abstract»

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  • Mathematical Modeling of a VSCF Aircraft Generating System

    Publication Year: 1986, Page(s):573 - 582
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2093 KB)

    DC-link converters having a variable input frequency but a constant output frequency now provide a viable alternative to the constant-speed mechanical drive as a means of providing a constant frequency power supply from an aircraft generator. The ease of replacement and repair, the reduction in servicing needs, and the ability to locate the components of the electrical system throughout the aircra... View full abstract»

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  • On-Line Vehicle Motion Estimation from Visual Terrain Information Part I: Recursive Image Registration

    Publication Year: 1986, Page(s):583 - 587
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (856 KB)

    This paper addresses estimation of motion from the optical flow observed by an airborne down looking electro-optical sensor. The paper is in two parts. Part I addresses the development and analysis of a velocity-to-height ratio estimation algorithm and its principal error characteristics. In part II, it is shown how the information provided by the motion estimator can be integrated with additional... View full abstract»

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  • On-line Vehicle Motion Estimation from Visual Terrain Information Part II: Ground Velocity and Position Estimation

    Publication Year: 1986, Page(s):588 - 604
    Cited by:  Papers (12)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2872 KB)

    An algorithm, combining velocity/height estimates, obtained from an airborne body fixed image shift estimator with auxiliary on-board measurements and sparsely stored terrain profile information constitutes an entirely passive autonomous navigation system suitable for moderate-g flight missions. Two versions are addressed. The "naive estimator," in which altitude estimates are multiplied by veloci... View full abstract»

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  • Damping of Generator Oscillations Using Static VAR Compensators

    Publication Year: 1986, Page(s):605 - 617
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1693 KB)

    The design of a novel static VAR compensator for the damping of electromechanical oscillation in a synchronous generator is presented. The proposed compensator, which is made up of a fixed capacitor and a thyristor-controlled inductor, is installed at the generator terminal to provide the required damping without deteriorating the voltage profile under disturbance conditions. In order to have bett... View full abstract»

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  • An Ultrahigh Speed CAMAC Interface for a Large Flight Simulator System

    Publication Year: 1986, Page(s):618 - 627
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5385 KB)

    The real-time simulation subsystem (RTSS) at the NASA Langley Research Center in Hampton, VA, consists of several CDC CYBER computers and over 20 flight simulation sites. This simulation network is used by the Langley Center to advance the state of aeronautics and to improve air safety. The current simulator interface system at NASA-Langley was installed in 1968 and uses centrally located analog a... View full abstract»

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  • On Team Games: A Computational Structural Analysis

    Publication Year: 1986, Page(s):628 - 641
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2545 KB)

    Team games are studied here with one performance index for the team as a unit in competition with one common opponent. A structural analysis is presented with the intent to simplify the computation of optimal decision and communication processes. The minimum principle and calculus of variations are used to compute time-optimal and quadratic-optimal trajectories for certain linear "pursuit-evasion"... View full abstract»

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  • Models for Radar Scatterer Density in Terrain Images

    Publication Year: 1986, Page(s):642 - 647
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2413 KB)

    Statistical models for the density of strong scatterers detected in high resolution radar images of rural terrain are presented. The probability distribution of the density of these natural terrain detections was found to be negative binomial. The variance of the negative binomial depended strongly on the window size used to measure the density. This dependence indicates that these detections, lik... View full abstract»

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  • An Analytical Expression for Correlation Accuracy

    Publication Year: 1986, Page(s):648 - 656
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1345 KB)

    An analytical closed-form expression for the uncertainty in aligning two images is derived as a function of image area, data fidelity, scene correlation length, limiting sensor resolution length, and degree of geometrical distortion between the two images. View full abstract»

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  • The Effect of Constant Velocity Error on SAR Focus

    Publication Year: 1986, Page(s):657 - 659
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (418 KB)

    The usual analyses of the effect of constant radar velocity error on synthetic aperture radar (SAR) focus generally yield the result that the cross-radial component of velocity error is primarily responsible for image defocusing. A simple argument is given demonstrating that image focus depends on accurately estimating radar speed, in which the along-track (AT) component of velocity error is most ... View full abstract»

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  • Comment on "Reliability of Velocity Measurement by MTD Radar"

    Publication Year: 1986, Page(s):659 - 661
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  • Comments on "Track Biases and Coalescence with Probabilistic Data Association"

    Publication Year: 1986, Page(s):661 - 662
    Cited by:  Papers (1)
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  • Ku-Band Atmospheric Attenuation Model

    Publication Year: 1986, Page(s): 662
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (195 KB)

    An atmospheric attenuation model has been developed at Ku-band. This model is suitable for predicting air-to-surface radar performance over a wide range of operating conditions. View full abstract»

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  • M. Barry Cariton Award for 1985

    Publication Year: 1986, Page(s): 663
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    Freely Available from IEEE

Aims & Scope

IEEE Transactions on Aerospace and Electronic Systems focuses on the organization, design, development, integration, and operation of complex systems for space, air, ocean, or ground environment.  These systems include, but are not limited to, navigation, avionics, spacecraft, aerospace power, radar, sonar, telemetry, defense, transportation, automated testing, and command and control. 

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Meet Our Editors

Editor-in-Chief
Lance Kaplan
Army Research Laboratory