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IEEE Transactions on Aerospace and Electronic Systems

Issue 2 • Date March 1977

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  • Table of contents

    Publication Year: 1977, Page(s): c1
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    Freely Available from IEEE
  • IEEE Aerospace and Electronic Systems Society

    Publication Year: 1977, Page(s):c2 - 224a
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  • From the Editor in Chief

    Publication Year: 1977, Page(s): 81
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  • Flow Diagnostics by Laser Interferometry

    Publication Year: 1977, Page(s):82 - 90
    Cited by:  Papers (11)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3124 KB)

    A survey is made of interferometric techniques receiving the optical path ¿ = ¿nds in real time. Using differential interferometry or a new phase coupling technique, ¿(t) can be obtained in a wide range of conditions. A variety of applications to gasdynamic problems is described. View full abstract»

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  • A Distributed Air Defense Information System

    Publication Year: 1977, Page(s):91 - 95
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    A systems approach to the evolution of an air defense ground environment (ADGE) system through its life cycle is described. View full abstract»

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  • The Laser BMD and Other Radiant Energy Weapons: Some Thoughts

    Publication Year: 1977, Page(s):96 - 107
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2988 KB)

    This paper opens with a discussion of the ABM Treaty and the particular language in it that presently excludes the deployment of a laser BMD. Eight pressure points are then presented that may cause both the Soviets and the Americans to reevaluate the payoff of such ACD agreements to their overall national security, even to the extent of abrogating the Outer Space Treaty and SALT Phase I. Next an e... View full abstract»

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  • Minimum Number of Satellites for Three-Dimensional Continuous Worldwide Coverage

    Publication Year: 1977, Page(s):108 - 111
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (815 KB)

    Global positioning by means of satellites requires simultaneous observation by at least four satellites. The problem is to determine the minimum number of satellites and the corresponding orbital geometry necessary to satisfy this requirement on a continuous basis. To model the problem, a fixed number of users are assumed uniformly distributed in a known manner over the surface of the earth, and t... View full abstract»

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  • Digital Control of High Performance Aircraft Using Adaptive Estimation Techniques

    Publication Year: 1977, Page(s):112 - 119
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1593 KB)

    Since the early 1960's, a rapid advance in signal processing, including filtering and estimation techniques, has been evident. In contrast, applied feedback control, particularly for aircraft, is currently based on technology available prior to 1960, i. e., primarily either constant gain feedback or at most a standard gain-scheduling. In this paper, an adaptive signal processing algorithm is joine... View full abstract»

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  • Cochannel Interference in Partially Coherent Communication

    Publication Year: 1977, Page(s):120 - 126
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1489 KB)

    Effects of cochannel interference and synchronization error of the carrier phase on the probability of error in binary communications are considered. Several bounds on the probability of error are proposed. The bounds are easy to compute and do not require complete statistical characterization of the errors. They turn out to be simple linear combinations of error probabilities with no cochannel in... View full abstract»

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  • Effect of Fading on FM Reception with Cochannel Interference

    Publication Year: 1977, Page(s):127 - 132
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1220 KB)

    The combined effect of cochannel interference and nonselective Rayleigh fading on the reception of analog FM signals in additive Gaussian noise is analyzed. Rice's click model for the breaking region is used. Analysis in the absence of interference is performed first and the effect of modulation on the click rate is found to be nearly negligible. For the case with cochannel interference the click ... View full abstract»

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  • Some Relationships Between Observation and Access in Reconnaissance and Surveillance

    Publication Year: 1977, Page(s):133 - 135
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (953 KB)

    First Page of the Article
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  • Optimum Constrained Image Restoration Filters

    Publication Year: 1977, Page(s):136 - 146
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3326 KB)

    An optimum image restoration filter is described which minimizes the radius of gyration of the corrected or composite system point-spread function subject to constraints on the radius of gyration of the restoration fitter point-spread function, the total noise power in the restored image, and the shape of the composite system frequency spectrum. The filter function is obtained as the solution to a... View full abstract»

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  • Optimum Angle Demodulation with Saturation Nonlinearity in the Modulator

    Publication Year: 1977, Page(s):147 - 155
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1699 KB)

    The problem of optimum demodulation of PM and FM signals when the phase modulator employed in the transmitter of the communication system exhibits saturation effects is studied. Quasi-optimum receivers with zero and finite lag are designed by making use of the state variable techniques. Performance results are presented graphically for a class of message signals, and it turns out that the effect o... View full abstract»

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  • Noisy Feedback in a Binary Sequential Communication Scheme

    Publication Year: 1977, Page(s):156 - 162
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1372 KB)

    The effects of a noisy feedback channel on a communication system with the decision and information feedback proposed as by Mancianti et al. are described. Expressions for the expected transmitted energy per symbol, expected decision time, and receiver's error probability are derived in terms of the error probability Pef over the noisy information channel. Because of the complexity of exact calcul... View full abstract»

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  • Optimal Recursive Processing in Phase-Coded Waveform Radars

    Publication Year: 1977, Page(s):163 - 171
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1886 KB)

    A recursive algorithm is proposed for target detection in pulse-compression radars. This method performs a least square estimate of the radar-channel impulse response, yielding range-sidelobe elimination The algorithm considered becomes particularly simple when pseudorandom binary sequences are employed. In such a case, the losses of signal-to-noise ratio, with respect to the matched filter, are e... View full abstract»

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  • Optimal Precession Control of Randomly Perturbed Spin-Stabilized Satellite

    Publication Year: 1977, Page(s):172 - 178
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1687 KB)

    Dynamics of the satellite angular momenta is modeled by ordinary differential equations with additive white noise. A feedback controller er is desired to maintain tolerable satellite momenta and to economize ze the fuel consumption. The stochastic optimal control problem is transformed into an equivalent deterministic optimization problem involving a parabolic partial differential equation. Necess... View full abstract»

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  • Minimax Approach to Trajectory Optimization of Multistage Launch Vehicles

    Publication Year: 1977, Page(s):179 - 187
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1655 KB)

    An optimum pitch steering program is developed, using a minimax technique, for a multistage launch vehicle in the presence of large parameter uncertainties. The uncertainties are characterized by deterministic bounds on the respective parameters. The pitch steering program is obtained by maximizing two independent scalar performance ance indexes. 1) the coast apogee velocity for a specified altitu... View full abstract»

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  • Single Channel Per Carrier Satellite Repeater Capacity, Part 2

    Publication Year: 1977, Page(s):188 - 196
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2207 KB)

    This paper analyzes the performance of a number of speech processing techniques that have been considered for single voice channel per carrier transmissions via satellite. This transmission mode is applicable to demand assigiment systems, which make possible the most efficient loading of the satellite transponder applications where the traffic at individual earth terminals is not sufficient to jus... View full abstract»

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  • Drag Force of an Eddy Current Damper

    Publication Year: 1977, Page(s):197 - 200
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (610 KB)

    Closed-form expressions are derived by field calculations for the drag force exerted by spacecraft eddy current dampers. These devices are conducting slabs moving at low speed in a narrow gap between magnets with a rectangular cross section. Finite edge effects of the slab are accounted for. The results can be used for design studies. View full abstract»

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  • Third-Order Loop Filter Design for Acceleration-Rate Tracking

    Publication Year: 1977, Page(s):200 - 203
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (599 KB)

    A perfect third-order loop filter design that can be implemented as a digital filter is obtained which minimizes the noiseless steady-state acceleration rate (jerk) error for a fixed loop noise bandwidth. Simulations were performed to obtain transient responses of the third-order loop plus a sample fourth-order loop under a jerk input. The results enable one to obtain a loop design that minimizes ... View full abstract»

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  • A Lower Bound to Rcomp for the Gaussian Channel with a Uniform Quantizing Demodulator

    Publication Year: 1977, Page(s):204 - 208
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (763 KB)

    Consideration is given to a channel using orthogonal modulation, soft decision-uniform quantizing demodulation, and perturbed by additive white Gaussian noise. A lower bound is derived to the Rcomp of this channel. The bound explicity exhibits the dependence upon the degree of quantization and is easily computable. It also indicates that the uniform quantizing demodulation scheme is close to optim... View full abstract»

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  • Maximum Theoretical Angular Accuracy of Planar and Linear Arrays of Sensors

    Publication Year: 1977, Page(s):208 - 216
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1419 KB)

    A study has been made of the maximum theoretical accuracy in the angular location of a radiating object that is achievable by using a planar or linear array. The elements are assumed to have identical radiation patterns and the complex voltages observed at their ports are assumed to be subject to phase measurement errors, having normal probability density. An optimum scheme for the statistical ext... View full abstract»

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  • Can Land-Based Strategic Bombers Survive an SLBM Attack?

    Publication Year: 1977, Page(s):216 - 219
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (790 KB)

    The B-1 bomber will receive Presidential review in early 1977. A recent study by the Brookings Institution on the B-1 contains an erroneous analysis of its survivability in an SLBM attack, which detracts from the overall merit of the study. This issue is discussed and an alternative analysis is presented. View full abstract»

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  • Corrections to "Limiter-Discriminator Detection Performance of Manchester and NRZ Coded FSK"

    Publication Year: 1977, Page(s): 219
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  • AUTOTESTCON '76 (Formerly ASSC)

    Publication Year: 1977, Page(s):220 - 224
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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