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IEEE Transactions on Aerospace and Electronic Systems

Issue 3 • Date May 1975

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Displaying Results 1 - 24 of 24
  • Table of contents

    Publication Year: 1975, Page(s): c1
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  • IEEE Aerospace and Electronic Systems Society

    Publication Year: 1975, Page(s):c2 - 53b
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  • From the Editors

    Publication Year: 1975, Page(s): 297
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  • Nonsymmetrical, Nonlinear Aerospace Alternators on Nonlinear Loads

    Publication Year: 1975, Page(s):298 - 315
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3402 KB)

    A two-dimensional numerical analysis of the cross section of a homopolar inductor alternator supplying a rectifier load is developed. Besides the effects of the nonlinearities of the magnetic materials, the eddy currents induced in the rotor by the nonlinear load are considered. Results for a 95-kVA homopolar inductor alternator are presented and include magnetic induction and flux distribution at... View full abstract»

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  • Polarization Effect on Multipath for Extended Targets

    Publication Year: 1975, Page(s):316 - 320
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1120 KB)

    The results of a theoretical investigation of the influence of polarization on multipath are presented. First, the case of a point target is examined and it is confirmed that the multipath effect tends to vanish for rough sea and small grazing angles. Models of a buoy and of a large ship are then introduced and it is shown that, for targets that are extended in height, the multipath effect for ver... View full abstract»

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  • A Comparison of Complementary and Kalman Filtering

    Publication Year: 1975, Page(s):321 - 325
    Cited by:  Papers (71)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1073 KB)

    A technique used in the flight control industry for estimation when combining measurements is the complementary filter. This filter is usually designed without any reference to Wiener or Kalman filters, although it is related to them. This paper, which is mainly tutorial, reviews complementary filtering and shows its relationship to Kalman and Wiener filtering. View full abstract»

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  • A Discussion of Digital Processing in Synthetic Aperture Radar

    Publication Year: 1975, Page(s):326 - 337
    Cited by:  Papers (41)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2359 KB)

    This is a summary paper describing the processing of synthetic aperture radar (SAR) data using digital correlation algorithms. Fundamental SAR theory as it applies to the various SAR modes, namely, strip mapping, spotlight mapping, and Doppler beam sharpened mapping, is described and a baseline design applicable to all SAR modes is presented. Digital processor design is developed, starting with a ... View full abstract»

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  • Motion Compensation for Synthetic Aperture Radar

    Publication Year: 1975, Page(s):338 - 348
    Cited by:  Papers (50)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1433 KB)

    A generalized motion compensation approach applicable to all SAR modes, i.e., strip mapping (side-looking or squint), spotlight (or telescope) mapping, and Doppler beam sharpened mapping (DBS), is described. The basic concept is the formation for unit vector ¿ and the slaving of the real illuminating antenna and the processed synthetic antenna to this unit vector. The amount of motion compensatio... View full abstract»

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  • Failure Isolation for a Minimally Redundant Inertial Sensor System

    Publication Year: 1975, Page(s):349 - 357
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1569 KB)

    The application of two-degree-of-freedom inertial sensors in a minimally redundant strapdown configuration is considered. The potential improvement in reliability which can be achieved by exploiting the failure isolation capability unique to this configuration is evaluated. A unified, statistical approach to the detection and isolation of both hard and soft sensor failures is presented. The effect... View full abstract»

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  • Information for authors

    Publication Year: 1975, Page(s): 358
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  • Adaptive Interference Cancellation in Nyquist Rate Scanned Arrays

    Publication Year: 1975, Page(s):359 - 362
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (801 KB)

    A concept for adaptive directional filtering in a Nyquist rate scanned array based on time-domain sampling in the array sum channel is presented. By this method the adaptation rate may be independent of the scan rate in contrast to arrays with adaptive weight setting in the array element channels. View full abstract»

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  • Comparison of Two Major Classes of Coherent Pulsed Radar Systems

    Publication Year: 1975, Page(s):363 - 371
    Cited by:  Papers (4)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1882 KB)

    Two classes of coherent radar types are analyzed to ascertain whether any significant advantages exist for a given system. The classes compared are those coherent radars which transmit a phasecoherent pulse-to-pulse RF carrier as opposed to those which transmit randomly phased RF carriers but store the coherent information at the radar for Doppler extraction. Rigorous new analytical development is... View full abstract»

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  • Optimal Resolution of Rectangular Pulses in Noise

    Publication Year: 1975, Page(s):372 - 379
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1438 KB)

    Optimal detection of rectangular pulses in noise is considered, subject to a sidelobe constraint which ensures adequate resolution capabilities, and a new sidelobe reduction filter is derived. Tests in the laboratory and on a Westinghouse AN/TPS-27 search radar system em indicate that use of the new filter substantially improves both resolution and clutter performance over such standard techniques... View full abstract»

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  • Direct-Ranging Loran Model Identification and Performance Predictions

    Publication Year: 1975, Page(s):380 - 385
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1443 KB)

    With the availability of modern data processing techniques and lowcost stable time references, the use of Loran in a direct-ranging mode offers certain potential advantages. In order to generate reliable direct-ranging Loran (DRL) performance projections and system designs, however, accurate system error models are required. This paper first describes the processing of airborne flight data from a ... View full abstract»

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  • Investigation of Pulse Torquing Systems

    Publication Year: 1975, Page(s):386 - 392
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1297 KB)

    In this paper, a pulse torquing loop of a force integrating type sensor is investigated with the aim of increasing the measurement accuracy by choosing the proper design parameters, viz., sampling frequency and deadband. From the results, it is advisable to employ as high a sampling frequency as possible, while further improvements in performance can be obtained by operating the system in ternary ... View full abstract»

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  • Binary Signal Detection with Decision and Information Feedbacks

    Publication Year: 1975, Page(s):393 - 399
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1246 KB)

    This paper analyzes a sequential feedback detection scheme derived by Kramer's nonsequential intermittent one; in addition to the noiseless information feedback channel, it makes use of a noiseless decision feedback channel. Expressions for the normalized average evergy per symbol, average decision time, probability of error, and average power are derived. The comparison with the nonsequential int... View full abstract»

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  • Performance Evaluation of Suboptimal Filters

    Publication Year: 1975, Page(s):400 - 405
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1184 KB)

    The use of a Kalman filter in an applications problem requires a detailed model of both the system dynamics and the measurement dynamics. The model for many problems may be extremely large in dimensionality. However, in many instances one has a limited computer capability and, thus, must purposely introduce modeling errors into the filter in order to gain a computational advantage. However, as is ... View full abstract»

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  • Application of the Conjugate Gradient Method to a Problem on Minimum Time Orbit Transfer

    Publication Year: 1975, Page(s):406 - 412
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (950 KB)

    This correspondence considers the problem of optimally controlling the thrust steering angle of an ion-propelled spaceship so as to effect a minimum time coplanar orbit transfer from the mean orbital distance of Earth to mean Martian and Venusian orbital distances. This problem has been modelled as a free terminal time-optimal control problem with unbounded control variable and with state variable... View full abstract»

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  • Proportional Tracking with Clipped-input Matched Filters

    Publication Year: 1975, Page(s):412 - 415
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (747 KB)

    A proportional boresight-error measurement is described for tracking systems that is applicable to envelope-producing matched filters with hard-limited inputs. The error response is derived as a function of input SNR and the filter output SNR is estimated. View full abstract»

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  • On the Acquisition Behavior of Binary Delay-Lock Loops

    Publication Year: 1975, Page(s):415 - 418
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    The acquisition problem for binary delay-lock loops is re-examined. Previous results obtained by Spilker and Gill on the maximum allowable search rate are shown to be in error. New results are given for the 2-¿ loop with video correlation and the 1-¿ loop with video and envelope correlation. View full abstract»

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  • Corrections to "Angle of Arrival Estimation Using an Adaptive Antenna Array"

    Publication Year: 1975, Page(s): 418
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  • International Radar Conference

    Publication Year: 1975, Page(s):419 - 427
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  • IEEE AES-AN Invitation

    Publication Year: 1975, Page(s): 428
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  • International Cumulative Index on Radar Systems

    Publication Year: 1975, Page(s):i - 53
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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