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Aerospace and Electronic Systems, IEEE Transactions on

Issue 3 • Date May 1976

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Displaying Results 1 - 21 of 21
  • 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 - 432a
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  • From the Editors

    Publication Year: 1976 , Page(s): 313 - 315
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  • Economical Design of Wind Generating Plants

    Publication Year: 1976 , Page(s): 316 - 320
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1184 KB)  

    A definitive analysis technique is proposed for designing wind generating plants to produce electrical energy at minimum cost. The method employs variation in essential design parameters: rated power level, rated wind velocity, design wind velocity, and number of generator poles. These parameters in turn define wind turbine radius, turbine speed, rated torque at step-up gear input, and step-up gea... View full abstract»

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  • Probability Density Function at the Output of the Delay-Lock Discriminator

    Publication Year: 1976 , Page(s): 321 - 326
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (733 KB)  

    The first-order probability density at the output of the correlation network of the delay-lock discriminator is determined using the methods developed by Arthur, Kac, and Siegert. The analysis assumes that the input signal is stationary and Gaussian and that the discriminator is locked on. No restrictions are made on the bandpass filter characteristics in the channels. View full abstract»

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  • On-Board Image Compression for the RAE Lunar Mission

    Publication Year: 1976 , Page(s): 327 - 335
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (4796 KB)  

    The requirements, design, implementation, and flight performance of an on-board image compression system for the lunar orbiting Radio Astronomy Explorer-2 (RAE-2) spacecraft are described. The image to be compressed is a panoramic camera view of the long radio astronomy antenna booms used for gravity-gradient stabilization of the spacecraft. A compression ratio of 32 to 1 is obtained by a combinat... View full abstract»

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  • Quantization of PMT Signals for Meteorological Satellites

    Publication Year: 1976 , Page(s): 336 - 340
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1964 KB)  

    Quantization rules are examined for a satellite radiometer in the visual range. Effects of photomultiplier tube (PMT) noise on the detection of cloud brightness levels are of particular interest because the expected radiance levels are high. Effects of area integration are considered to improve the probability of detection at high radiance levels. View full abstract»

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  • A Vector Autopilot System

    Publication Year: 1976 , Page(s): 341 - 348
    Cited by:  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1561 KB)  

    Current technology has evolved low cost, highly reliable solid state vector magnetometers with excellent angular resolution. This paper discusses the role of a three-axis magnetometer as a new instrument for aircraft attitude determination. Using flight data acquired by an instrumented aircraft, attitude is calculated using the Earth's magnetic field vector and compared to measured attitudes. The ... View full abstract»

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  • Fuel Savings in the WHECON Attitude Control System Using an Asymmetric Controller

    Publication Year: 1976 , Page(s): 349 - 354
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1504 KB)  

    This paper investigates the possibility of generating an on-off limit cycle mode in the WHECON attitude control system. lt is shown that, by eliminating the off set angle ¿ in the roll-actuated control torquer, the WHECON system can be reduced to the structure considered earlier by Mendel and, therefore, an on-off limit cycle can be generated simply by introducing an appropriate amount of asymmet... View full abstract»

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  • Optimal and Suboptimal Guidance for a Short-Range Homing Missile

    Publication Year: 1976 , Page(s): 355 - 361
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2155 KB)  

    Optimal and suboptimal guidance laws for short-range homing missiles are developed and compared to the commonly mechanized quidance law of proportional navigation. The optimal controller is derived as an optimal feedback regulator; the suboptimal controller is an approximation of the optimal regulator and consists of timevarying proportional navigation plus a time-varying gain term times a calcula... View full abstract»

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  • Bit Synchronization for Phase-Noncoherent Reception of Binary FSK Signals

    Publication Year: 1976 , Page(s): 362 - 368
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1193 KB)  

    The optimum (maximum likelihood criterion) bit synchronizer for phase-noncoherent reception of binary FSK signals is found and a suboptimum implementation of it is derived. The performance of this circuit is analyzed in the presence of thermal noise, and the expression of the timing jitter variance is obtained in the case of relatively large signal-to-noise ratios. View full abstract»

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  • Effect of Errors in Adaptive Weights

    Publication Year: 1976 , Page(s): 369 - 373
    Cited by:  Papers (9)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1109 KB)  

    Optimum weighting is used to adaptively increase the signal-to-interference ratio (SIR) of signal processors. The precision required in computing the weights is evaluated. Analytic results have been obtained and verified by computer simulation. lt is shown that for antenna adaptivity the required weight precision increases with increasing values of the attainable SIR improvement and with the numbe... View full abstract»

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  • Table-Aided Design of the Energy-Storage Reactor in DC-to-DC Converters

    Publication Year: 1976 , Page(s): 374 - 386
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3027 KB)  

    A new procedure for the selection of magnetic cores for use in energy-storage dc-to-dc power converters that eliminates the need for an automated computer search algorithm and stored data file is presented. The converter configurations included in the procedure are the three commonly encountered single-winding converters for voltage stepup, for current stepup and voltage stepup/current stepup, and... View full abstract»

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  • Transmission Characteristics of an FM Signal Through a Hard Limiting Repeater

    Publication Year: 1976 , Page(s): 387 - 396
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1936 KB)  

    The response of an FM detector to an FM signal which is passed through a hard limiting repeater together with additive Gaussian noise is described. A general expression of the output SNR is derived that enables the determination of the threshold behavior. To clarify the feature of a transmission characteristic, a comparison with a linear repeater is also made. The output SNR is found to be larger ... View full abstract»

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  • Algorithms for Multitarget Ambiguity Removal after Coincidence Detection

    Publication Year: 1976 , Page(s): 397 - 401
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (801 KB)  

    A first cut at the difficult problem of the identification and removal of ambiguous responses to radar burst waveforms is presented. Assuming that two bursts are used, algorithms for multitarget ambiguity removal after coincidence detection are presented and illustrated by examples. The results may have significant application in ballistic missile defense surveillance radars. View full abstract»

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  • MTI Optimization in a Multiple-Clutter Environment

    Publication Year: 1976 , Page(s): 401 - 405
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (823 KB)  

    A means of optimizing a moving target indicator (MTI) filter for rejecting several types of clutter, which are generated by different mechanisms such as by rain or the ground, is formulated. lt is found that the optimal performance of such a filter depends on the spectral density functions, average radar cross sections, and the relative mean Doppler frequencies of each type of clutter. lt is shown... View full abstract»

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  • A Target Trajectory Noise Model for Kalman Trackers

    Publication Year: 1976 , Page(s): 405 - 408
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (652 KB)  

    A model is developed for the Kalman tracker to account for stationary trajectory perturbations of a target navigating along a nominal straight-line path. This model is thought to be representative of a certain class of targets and is appropriate for long tracking times associated with surveillance/reconnaissance-type missions. In its simplest form, the model only requires one additional variable i... View full abstract»

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  • Comments on "Multiple Frank-Hiemiller Signals for Multiple Access Systems"

    Publication Year: 1976 , Page(s): 408 - 409
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  • Average Ambiguity Function for a Randomly Staggered Pulse Sequence

    Publication Year: 1976 , Page(s): 410 - 413
    Cited by:  Papers (14)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (452 KB)  

    An average ambiguity function for the envel¿pe of a randomly stagger-pulsed radar is defined. This function is related to the characteristic function of the pulse occurrence time statistics, and is numerically evaluated for some special cases. View full abstract»

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  • Abstracts NAECON '76

    Publication Year: 1976 , Page(s): 414 - 431
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  • Information for authors

    Publication Year: 1976 , Page(s): 432
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Aims & Scope

IEEE Transactions on Aerospace and Electronic Systems focuses on the equipment, procedures, and techniques applicable to the organization, installation, and operation of functional systems designed to meet the high performance requirements of earth and space systems.

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Meet Our Editors

Editor-in-Chief
Lance Kaplan
Army Research Laboratory