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IEEE Transactions on Aerospace and Electronic Systems

Issue 3 • Date May 1970

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Displaying Results 1 - 25 of 35
  • Table of contents

    Publication Year: 1970, Page(s): c1
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    Freely Available from IEEE
  • IEEE Aerospace and Electronic Systems Group

    Publication Year: 1970, Page(s): c2
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    Freely Available from IEEE
  • From the Editors

    Publication Year: 1970, Page(s): 269
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    Freely Available from IEEE
  • Electronic Composition System

    Publication Year: 1970, Page(s):270 - 275
    Cited by:  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2026 KB)

    Electronic composition systems which are presently becoming available may be as revolutionary to the graphic arts industry as was the introduction of the linecasting machine. These systems will eventually effect the complete publication cycle¿from author's manuscript to, and including, plate making and distribution. The initial impact of the electronic systems will be felt primarily by the editor... View full abstract»

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  • Tracking and Data Relay Satellites

    Publication Year: 1970, Page(s):276 - 289
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2943 KB)

    A discussion of tracking and data relay satellites is presented, including the TDRS concept of employing geostationary spacecraft to command, track, and relay data from multiple orbiting satellites to central ground stations. Benefits include economic advantages and improved service. A system design and spacecraft descriptions are included. View full abstract»

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  • A Dual-Mode Routing Algorithm for an Autonomous Roving Vehicle

    Publication Year: 1970, Page(s):290 - 294
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1591 KB)

    A dual-mode algorithm for routing an unmanned autonomous roving vehicle designed to explore the uncertain terrain of other planets is presented. The algorithm consists of a global mode, which uses dynamic programming and terrain information available from photo reconnaissance data to determine a nominal optimal path, and a local mode, which routes the vehicle around obstacles whose presence, locat... View full abstract»

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  • Analytic Coherent Radar Techniques for Target Mapping

    Publication Year: 1970, Page(s):295 - 305
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2783 KB)

    From among the many inverse shape and motion techniques considered in our work, a review is made of four methods for target mapping using coherent monostatic and multistatic measurements. These methods can provide a wide variety of shape description: surface outline, a map of discontinuities, or a viewable image in two or three dimensions. The paper discusses the form of the resulting target descr... View full abstract»

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  • Determination of Bounds on Performance Measure and Min-Max Controllers in Time-Lag Systems

    Publication Year: 1970, Page(s):306 - 312
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1877 KB)

    The effect of bounded deterministic disturbances (external and/or internal) on a chosen performance index (PI) is investigated. Upper and lower bounds of the PI about a nominal value are determined by the application of the optimum control theory. A computational procedure is also proposed to determine an approximately optimal feedback controller for time-lag systems. Such a controller is designed... View full abstract»

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  • Transient Response of Tracking Filters with Randomly Interrupted Data

    Publication Year: 1970, Page(s):313 - 323
    Cited by:  Papers (14)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2452 KB)

    The transient responses during the initialization phase of a first-order ¿-ß tracking filter and a second-order Kalman filter are evaluated as a function of radar measurement accuracy and the probability of receiving valid data at the prescribed intervals. Monte Carlo simulation results are complemented by analysis of the filtering processes and curves are presented which clearly define the dete... View full abstract»

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  • Effect of Noncoherent FSK Versus PSK on Waveform Error in PCM Telemetry

    Publication Year: 1970, Page(s):324 - 333
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2094 KB)

    In a recent paper [1] the authors presented an optimization strategy for the transmission of analog data over a PCM telemetry link. Constraints imposed included real-time operation and both average and peak power limitations on the transmitter. The selected strategy used Karhunen-Loeve (KL) sampling, unequal bit assignments, optimum uniform quantizing, the natural code, and PSK reception. In this ... View full abstract»

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  • Optimum Adaptive Reception for Binary Sequences

    Publication Year: 1970, Page(s):334 - 339
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (927 KB)

    The a posteriori probability density function p(¿|X1, X2,...,Xk), where the Xi, i=1, 2, ..., K, represent Kvector-valued observations statistically related to the random vector ¿, appears in many applications of the methods of statistical inference to problems in pattern recognition and statistical communication theory. In this paper, it is shown that for equally likely binary sequences (M= 2) o... View full abstract»

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  • Signal-to-Noise Ratio in the Bandpass Output of a Discriminator

    Publication Year: 1970, Page(s):340 - 343
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1058 KB)

    A formula is derived for the output signal-to-noise power ratio from a limiter-discriminator that is followed by an ideal (rectangular) bandpass filter. This signal-to-noise ratio is shown to be inversely proportional to the difference between the cube of the upper cutoff frequency and the cube of the lower cutoff frequency. The formula commonly utilized by designers for the discriminator output s... View full abstract»

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  • Open Loop TV Image Stabilization

    Publication Year: 1970, Page(s):344 - 358
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2119 KB)

    The open loop compensation of vibrationally induced image motion via electronic deflections in an image intensifier is only possible if an adequate image motion transducer is available. It is desirable that this transducer should utilize components which are both available and needed for other purposes in the system. Thus, this investigation is limited to gyros. The nature of the errors in rate an... View full abstract»

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  • Urban Problems and Aerospace Resources

    Publication Year: 1970, Page(s): 359
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (92 KB)

    First Page of the Article
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  • Inside the Inner City

    Publication Year: 1970, Page(s):360 - 366
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1564 KB)

    A review of the conditions existing in urban areas and a review of the Model Urban Neighborhood Development (MUND) Program in Baltimore are presented. An appeal is voiced for a reversal of national priorities in the interest of national survival and the public interest with regard to housing, urban goals, and social problems so that the quality of life for our cities and their people may be improv... View full abstract»

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  • The Elements of Housing

    Publication Year: 1970, Page(s):367 - 372
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1865 KB)

    This paper describes the existing construction industry as a total system whose flow chart of operations moves from land accumulation through land development to actual construction and ultimate sale to the consumer. Based in part on the author's past experiences as a general building contractor, it focuses upon the historical evolution of the builder as the central figure in today's building proc... View full abstract»

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  • Aerospace Capability and Systems Analysis Applied to Urban Problems - Some Views from a Social Scientist

    Publication Year: 1970, Page(s):373 - 376
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (950 KB)

    Much has been written about the development of a general systems theory for application to civil problems, but very little documentation exists in the sense of case studies of large-scale programs implemented using the systems approach. The Model Urban Neighborhood Demonstration Program, operating in an inner-city poverty neighborhood in Baltimore, offers some lessons in this regard. With the pres... View full abstract»

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  • Some Comments on the Dynamics of Urban Structural Development

    Publication Year: 1970, Page(s):377 - 381
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1994 KB)

    The suggestion is made that the aerospace industry examine the dynamics of urban structural development, that it identify the forces which act on the elements comprising the structure of the city, and that it describe the relationship between and the relative movements of those elements. By formulating such a general theory of urban structural development, urban political, social, and economic lea... View full abstract»

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  • Encouraging Home Ownership

    Publication Year: 1970, Page(s):382 - 386
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    The experience of one corporation's participation in the Turnkey III home ownership program for low income families is related. Effects of hurricane Camille on one project are detailed. View full abstract»

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  • Applications of Systems Engineering to Urban Utilities

    Publication Year: 1970, Page(s):387 - 392
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1814 KB)

    Urban utilities are the technologies by which are provided life support services, resource distribution, and information transfers to the individuals and institutions in the city. These utilities now require about one third of the budgets of all major cities and are rapidly increasing in cost. Technological innovation in these systems has been minor, yet they are the aspects of urban function most... View full abstract»

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  • Discriminator Detection of Wide-Band PCM/FM

    Publication Year: 1970, Page(s):393 - 395
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (391 KB)

    The performance of discriminator detection of wide-band PCM/FM is investigated. Formulas are derived that allow one to predict system performance with the effects of both predetection and postdetection filtering accounted for. In particular, for a postdetection equivalent noise bandwidthbit time product b0T=2, it is shown that best results are obtained with a modulation index ß=0.6. Furthermore, ... View full abstract»

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  • The Synthetic-Array Radar Image of a Flat Plate

    Publication Year: 1970, Page(s):395 - 398
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (486 KB)

    The radar cross section of a flat plate has a sin x/x lobe structure. If a synthetic-array radar flies past the plate the resulting image is dependent upon what part of this lobe structure is sampled. When the plate is parallel to the flight path, the image is a line as wide as the plate. If the plate is not parallel, only the discontinuities at the ends of the plate are visible in the image. View full abstract»

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  • The Response of Hard-Limiting Bandpass Limiters to PM Signals

    Publication Year: 1970, Page(s):398 - 400
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (367 KB)

    The signal-to-noise ratio of the output of a hard-limiting bandpass limiter to a PM signal is calculated by using the probability density function of the random phase variable. The signal-to-noise ratio transfer characteristics are plotted for comparison. View full abstract»

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  • Estimating Bias in Loran Lines of Position

    Publication Year: 1970, Page(s):400 - 405
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1081 KB)

    A method of determining bias in calculated Loran-C coordinates is presented. The bias in calculated coordinates results from the complexity of the propagation problem. To remove the bias, a bias function is determined by regression analysis using observed time differences. Two examples of application to field data are given. View full abstract»

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  • Electronically Tracking Antenna System for Satellite Reception

    Publication Year: 1970, Page(s):405 - 407
    Cited by:  Patents (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (537 KB)

    This correspondence describes a novel electronically tracking antenna system for satellite reception in the VHF range. The "hedgehog" antenna consists of several antennas directed in different directions to cover the whole sky. An electronic switch, controlled by the satellite receiver, connects the receiver to the antenna from which the desired satellite signal is obtained. This system is especia... 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
Lance Kaplan
Army Research Laboratory