IEEE Transactions on Aerospace and Electronic Systems

Volume AES-14 Issue 5 • Sept. 1978

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Displaying Results 1 - 18 of 18
  • Table of contents

    Publication Year: 1978, Page(s): c1
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    Freely Available from IEEE
  • IEEE Aerospace and Electronic Syatems Society

    Publication Year: 1978, Page(s):c2 - 832b
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  • From the Editors

    Publication Year: 1978, Page(s): 737
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  • On-Line Computer for Transient Turbine Cascade Instrumentation

    Publication Year: 1978, Page(s):738 - 749
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3737 KB)

    A 32-channel computer based data acquisition and processing system em has been developed for use with the new type of transient cascade facility at Oxford. This is used for testing turbine blades and nozzle guide vanes at full-scale engine Reynolds and Mach numbers ers with correct wallto-flow temperature ratios. A novel technique for processing transient heat transfer data from thin film surface ... View full abstract»

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  • Range Resolution of Targets Using Automatic Detectors

    Publication Year: 1978, Page(s):750 - 755
    Cited by:  Papers (91)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1102 KB)

    When two targets are closely separated in range, automatic detectors will declare the presence of only one target. To increase the-probability of resolving targets in range, log video should be used and the threshold should be of the form T = μ + F, where the mean μ is the smaller of the two means calculated from reference cells on either the greater range side or the lesser range ... View full abstract»

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  • Analysis of Squaring Circuit Mechanizations in Costas and Squaring Loops

    Publication Year: 1978, Page(s):756 - 763
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1458 KB)

    Two different implementations of the carrier recovery loop for suppressed carrier binary phase-shift keyed (BPSK) signals are considered. In particular, the tracking performance of the squaring loop in which the squaring circuit is mechanized by a limiter/multiplier lier combination to produce the absolute value of the incoming signal, followed by appropriate bandpass filtering, is compared with t... View full abstract»

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  • Analysis Strapdown Navigation Using Quaternions

    Publication Year: 1978, Page(s):764 - 768
    Cited by:  Papers (64)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1046 KB)

    A brief review of the theory of strapdown inertial navigation is presented in which the attitude of the sensor box with respect to inertial space is represented by the four-parameter quaternion vector. . A 4X4 matrix R is defined which aids in relating quaternions to direction cosines and facilitates interpretation of the equations for error propagation, which are also derived. In the interpretati... View full abstract»

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  • Track-While-Scan Algorithm in a Clutter Environment

    Publication Year: 1978, Page(s):769 - 779
    Cited by:  Papers (20)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1795 KB)

    A track-while scan (TWS) algorithm is developed for targets in a clutter environment. The problem has been studied using only the position measurements [1, 5-8], but the simulation results have not been satisfactory. Modern processing techniques (FFT processor) ) in air traffic control and surveillance radar receivers provide both position and radial velocity. The radial velocity measurement may b... View full abstract»

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  • Effect of Sampling Time Jitter on Array Performance

    Publication Year: 1978, Page(s):780 - 788
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1802 KB)

    The effect on array SNR of errors in sampling times (jitter) isan analyzed for the "Bryn processor." Jitter is modeled as a discrete-paramter er random process, and expressions for array SNR are determined as a function of signal and noise spectra and jitter characteristics. For a plane wave signal, it is found that jitter in the data used to design the processor has no effect on output SNR if th... View full abstract»

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  • A Performance Measure for Evaluating Aircraft Landing Trajectories

    Publication Year: 1978, Page(s):789 - 795
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1605 KB)

    A general performance index is developed for evaluating aircraft landing trajectories. The primary term in the index is the effect of noise on people residing near the air terminal. Other terms included are passenger comfort, fuel consumed, and the time spent in the near-terminal area. Models are developed for aircraft engine noise, passenger comfort, the population distribution about a specific a... View full abstract»

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  • Adaptive Equalization for Chirp Radars through Channels with Nonlinear Phase

    Publication Year: 1978, Page(s):796 - 802
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1385 KB)

    An equalization technique is described suitable for operation in a chirp radar system in which the signal is transmitted over a channel dominated by phase nonlinearities. It is shown that the system is easily implementable, and an analysis of system performance will be presented. View full abstract»

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  • Cochannel Interference Analysis between Spaceborne and Terrestrial Radars

    Publication Year: 1978, Page(s):803 - 812
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1615 KB)

    An analysis of cochannel interference between spaceborne and terrestrial radars is presented. A generic modeling methodology is applied, which, it is felt, will represent the worst-case situation. In order to account for Doppler shifts, auto-and cross-ambiguity functions ions have been developed for determining matched filter outputs. The results support the ability of such radar systems to coexis... View full abstract»

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  • An Approach to Built-In Testing

    Publication Year: 1978, Page(s):813 - 818
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1538 KB)

    The archiitecture and justification for an approach to built-in testing (BIT) in electronic circuits and systems is presented. The proposed system is capable of on-line fault detection and prediction up to the shop replaceable assembly (SRA) level and is designed to interface with external automatic test equipment (ATE) for off-line fault diagnosis within the SRA. The constituent parts of the BIT ... View full abstract»

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  • Comments on Sen's Dual-Spin Spacecraft Dynamics

    Publication Year: 1978, Page(s):819 - 822
    Cited by:  Papers (1)
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  • Comments on "The GYROLITE: A New Generation Synchronous Satellite"

    Publication Year: 1978, Page(s):822 - 823
    Cited by:  Papers (1)
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  • Attitude Stabilization and Control of Dual-Spin Spacecraft

    Publication Year: 1978, Page(s): 823
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (126 KB)

    This invention relates to an attitude stabilizing system for adrodshaped satellite in which stabilization is achieved by use of a spinning ing energy dissipator. The system can operate by being mounted on the rotor of a dual spin satellite of by being connected to the main body of the satellite through a motor and bearing assembly. In the latter situation, the stabilizer acts both as a nutation da... View full abstract»

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  • Suppression of Weibull-Distributed Clutters Using a Cell-Averaging LOG/CFAR Receiver

    Publication Year: 1978, Page(s):823 - 826
    Cited by:  Papers (16)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (583 KB)

    The parameters of the Weibull distribution and the threshold level for an adaptive CFAR detector are determined by calculating the mean value and the mean-squared value of the input signal voltage before it passes through a logarithmic amplifier. By using this threshold level an adaptive method for suppressing various VVeibull-distributed clutters is proposed. View full abstract»

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  • Array processor performance under directional uncertainty

    Publication Year: 1978, Page(s):826 - 832
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (909 KB)

    Detection performance of four candidate receiver structures for the signal known except for direction (SKED) array problem is investigated. Included are the Bayes optimal detector, two estimate and plug structures, and a fixed estimate structure. Estimators considered are the maximum likelihood (ML) and maximum a posteriori (MAP). Performance degradation from optimal for the estimate and plug stru... View full abstract»

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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
Michael Rice
Brigham Young University