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Aerospace and Electronic Systems, IEEE Transactions on

Issue 4 • Date July 1976

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Displaying Results 1 - 23 of 23
  • Table of contents

    Publication Year: 1976 , Page(s): c1
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  • IEEE Aerospace and Electronic Systems Society

    Publication Year: 1976 , Page(s): c2 - 528a
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  • From the Editors

    Publication Year: 1976 , Page(s): 433
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  • On the Design of Suboptimal Controllers for Minimal Time Feedback Regulators

    Publication Year: 1976 , Page(s): 434 - 438
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1773 KB)  

    A method for designing suboptimal minimal time controllers for linear, time-invariant regulator systems is presented. An economical closed-loop controller is obtained by using Lyapunov surfaces, corresponding to a quadratic Lyapunov function, as a continuous approximation for isochronal surfaces. Systems employing this controller are obtained by minimization, with respect to parameters of the quad... View full abstract»

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  • Perspectives for Strategic Analysis in Advancing Ocean Technology

    Publication Year: 1976 , Page(s): 439 - 443
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2189 KB)  

    There is a growing need for the scientist, engineer, and administrator to better understand the kinds of overall, across-the-board planning problems involved in the development of off-shore coastal areas. A recommended approach is to use systems analysis techniques. Principles will be set forth on maintaining and improving the quality of the ocean environment, with considerations of cost in so doi... View full abstract»

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  • High Power Radar Implementation of Coherent Waveforms

    Publication Year: 1976 , Page(s): 444 - 450
    Cited by:  Papers (2)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2473 KB)  

    The radar use of coherent burst waveforms to obtain clutter suppression is summarized and problems arising from the high power implementation of such waveforms are discussed. These problems arise from the nonlinear nature of the typical high power radar transmitter and result in loss of subpulse-to-subpulse amplitude and phase accuracies, causing clutter suppression degradation. adaptive control l... View full abstract»

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  • Limiter Intermodulation Improvement Due to Selective Carrier Spacing

    Publication Year: 1976 , Page(s): 451 - 458
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2537 KB)  

    In many space communications applications, the intermodulation between carriers, due to limiting in a common amplifier, reduces the overall signal-to-noise ratio of the signal received at the ground station. By selectively spacing the carriers, one is often able to avoid the strong or low-order intermodulation. The question arises how much improvement is gained in carrier-to-interference ratio and... View full abstract»

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  • A Functionally Redundant Altimeter

    Publication Year: 1976 , Page(s): 459 - 463
    Cited by:  Papers (2)  |  Patents (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1710 KB)  

    A scheme to provide redundant sensor data in an automatic control system using the principle of functional redundancy is described. Normally there are three redundant radar altimeters used in the terminal phase of automatic landing of jet transport airplanes. This scheme replaces one of these altimeters with a data processing scheme based on a Kalman filter. The filter is driven by altitude rate a... View full abstract»

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  • Energy Management for Fuel Conservation in Transport Aircraft

    Publication Year: 1976 , Page(s): 464 - 471
    Cited by:  Papers (3)  |  Patents (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2611 KB)  

    Optimal control techniques have been applied to the problem of conserving fuel in C-141A aircraft. Numberical results form the basis for designing an on-board energy management system, which can automatically command fuel-optimal climb, cruise, and descent flight paths for a majority of this aircraft's missions. View full abstract»

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  • The closed-form solution of true proportional navigation

    Publication Year: 1976 , Page(s): 472 - 482
    Cited by:  Papers (40)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2208 KB)  

    The closed-form solution of the equations of motion of an ideal missile pursuing a nonmaneuvering target according to the true propotional navigation law is obtained. An analysis of the solution is performed, and the conditions necessary for the missile to reach the target are determined. View full abstract»

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  • Dynamics of Wind Generators on Electric Utility Networks

    Publication Year: 1976 , Page(s): 483 - 493
    Cited by:  Papers (25)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2628 KB)  

    Dynamic interaction of wind-turbine-driven generators on electric utility networks was studied by computer simulation. Nonlinear representations of wind-turbine and various drive train elements and Park equation representations of synchronous and induction generators were implemented. An infinite capacity network was assumed. Time history responses for various system configurations were computed u... View full abstract»

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  • On the Perfomance of Air Traffic Control Radar Beacon System

    Publication Year: 1976 , Page(s): 494 - 502
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2800 KB)  

    The sidelobe suppression and improved sidelobe suppression mode performance of terminal and enroute air traffic control radar beacon systems using the existing antenna and a typical improved antenna in the presence of perfectly dielectric flat ground are investigated theoretically. Necessary analytical expressions for various quantities characterizing the system performance have been derived. A ge... View full abstract»

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  • Signal to Noise Ratio Improvement by Frequency Division in the Presence of Bandpass Noise

    Publication Year: 1976 , Page(s): 503 - 505
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (417 KB)  

    The performance of a wide band frequency divider in the presence of additive Gaussian noise is presented. It is shown that the same theoretical signal to noise ratio improvement is attainable in this case as in the case where the spurious signal is a sine wave. View full abstract»

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  • Limiting Performance of Generalized Sign Test Detector

    Publication Year: 1976 , Page(s): 505 - 509
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (747 KB)  

    The limiting performance of the generalized sign test detector as the number M of target returns becomes infinite has been derived by Hansen and Olsen [1]. Simple expressions are derived herein for the limiting performance for finite M as K, the number of noise samples in the reference set, becomes infinite. Curves are presented which indicate how this limiting performance is approached as K is in... View full abstract»

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  • A Note on the Application of the Basic Kinematical Law

    Publication Year: 1976 , Page(s): 509
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (170 KB)  

    A set of guidelines is presented for correctly deriving the motion equations for a space vehicle by using the basic law of kinematics. View full abstract»

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  • Compensators for Bandpass Nonlinearities in Satellite Communications

    Publication Year: 1976 , Page(s): 509 - 514
    Cited by:  Papers (15)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (976 KB)  

    The characteristics of optimum compensators for bandpass non-linearities are described. A predistortion compensator to reduce the nonlinear phase and envelope distortion at the output of a traveling-wave tube (TWT) is developed, and a possible implementation as a simple network of power law devices in cascade with the input to the TWT is given. The overall compensated characteristic of the TWT app... View full abstract»

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  • Stability of 2-Degree-of-Freedom Gyro in a Spinning Vehicle

    Publication Year: 1976 , Page(s): 514 - 517
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (679 KB)  

    Using the Lyapunov approach, the conditions are presented for the stability of the spin axis of a 2-degree-of-freedom gyro which is mounted in a spinning vehicle. View full abstract»

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  • Error Probability in Binary Digital Communication in the Presence of an Interfering Signal

    Publication Year: 1976 , Page(s): 517 - 519
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (463 KB)  

    The presence of an interferring signal i(t) in a binary coherent symmetric channel is investigated. The probability of error is maximum when i(t) is antipodal to the transmitted signal, so(t) or s1 (t). The error probability is derived in the presence of a delayed interfering signal - so (t - r), where r is the time delay. An example of phase shift keying signals is given. View full abstract»

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  • Performance Degradation of MTI Circuits Due to Amplitude Limiting

    Publication Year: 1976 , Page(s): 519 - 522
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (725 KB)  

    The loss in output signal-to-noise ratio (SNR) due to amplitude limiting is obtained for a radar circuit consisting of a bandpass limiter, coherent demodulator, matched filter, and moving-target-indicator (MTI) filter. The circuit is used in scanning MTI radars. The tandem connection of the limiter and coherent demodulator is a model for the saturation of the intermediate-frequency (IF) demodulato... View full abstract»

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  • Defending a Moving Target Against Missile or Torpedo Attack

    Publication Year: 1976 , Page(s): 522 - 526
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (935 KB)  

    Problems involving kinematics of a counterweapon intercepting an attacking missile are well known. However, when the attacker's target, the counterweapon's launch platform, is moving, the problem generally becomes amenable only to trajectory simulation. Such may be the case in defense against torpedo attack against a ship and other situations involving the use of antimissile missiles. This paper d... View full abstract»

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  • Correction to "Strapdown Matrix Orthogonalization: The Dual Iterative Algorithm"

    Publication Year: 1976 , Page(s): 526
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  • 1976 Pioneer Award

    Publication Year: 1976 , Page(s): 527
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  • Information for authors

    Publication Year: 1976 , Page(s): 528
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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. 

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Lance Kaplan
Army Research Laboratory