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IEEE Transactions on Military Electronics

Includes the top 50 most frequently accessed documents for this publication according to the usage statistics for the month of

  • Observing the State of a Linear System

    Publication Year: 1964, Page(s):74 - 80
    Cited by:  Papers (671)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1518 KB)

    In much of modern control theory designs are based on the assumption that the state vector of the system to be controlled is available for measurement. In many practical situations only a few output quantities are available. Application of theories which assume that the state vector is known is severely limited in these cases. In this paper it is shown that the state vector of a linear system can ... View full abstract»

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  • Matched-Filter Theory for High-Velocity, Accelerating Targets

    Publication Year: 1965, Page(s):56 - 69
    Cited by:  Papers (114)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3809 KB)

    Two modifications of the conventional radar theory of matched filters and ambiguity functions are discussed. The first modification is to make the theory valid for high-velocity targets and wide-band signals, and the second is to include the effects of acceleration. The ability of a radar to measure target acceleration has previously been discussed in terms of measurement accuracy for isolated tar... View full abstract»

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  • An Optimal Data Association Problem in Surveillance Theory

    Publication Year: 1964, Page(s):125 - 139
    Cited by:  Papers (71)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2833 KB)

    This paper contains a theoretical analysis of the data association problem of a common type of surveillance system. By a method of inverse probability, the optimal data processor is obtained which permits maximum likelihood estimates to be made of the true data-surveillance object association. The maximum likelihood estimator is given in a form that lends itself to sequential computations performe... View full abstract»

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  • System Analysis of Semi-Markov Processes

    Publication Year: 1964, Page(s):114 - 124
    Cited by:  Papers (50)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2007 KB)

    Flow graph analysis has proved a valuable approach to the study of probabilistic systems. This paper extends the analytic procedures to semi-Markov processes, Markov processes whose transition times can also be arbitrary random variables. First we present the basic theory of the semi-Markov process. We derive expressions for the interval transition probabilities, the probabilities that the system ... View full abstract»

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  • Pulsed Helium-Neon Gas Laser Applications

    Publication Year: 1964, Page(s):3 - 12
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3364 KB)

    The pulsed helium-neon gas laser has provided pulse power more than three orders of magnitude above the average power afforded by CW operation. Analyses of the power-limiting factors show that still greater increases may be expected. By increasing the size of the laser tube several times, by optimizing the gas ratio and pressure, by optimizing reflectivity and transmissivity of the reflecting mirr... View full abstract»

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  • A Flexible Neural Logic Network

    Publication Year: 1963, Page(s):208 - 213
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1870 KB)

    The process of learning is manifested by the modification of an organism's response to a given set of input stimuli. This altered response to brought about by a gradual change in the neural logic of the animal's nervous system. The authors show that gradual changes in logic can be achieved by the use of digital and analog properties of the natural prototype. A two-input, one-output neural network ... View full abstract»

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  • Testing of Stellar-Inertial Guidance Systems

    Publication Year: 1963, Page(s):29 - 35
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1822 KB)

    The ever growing demands for improvement in performance of guidance equipment to be used in missiles and space vehicles has led to intensive interest in stellar-aided inertial reference systems. A stellar-inertial system uses star position information to correct for gyro drift and misalignment errors and serves as a means for updating position and velocity information generated by the guidance sys... View full abstract»

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  • Stellar Augmented Inertial Guidance for Ballistic Missiles

    Publication Year: 1963, Page(s):19 - 22
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2543 KB)

    The principle of correcting for inertial guidance error by means of star sighting has been successfully incorporated in automatic inertial navigators for aircraft such as the MK-1 guidance system for the SM62A pilotless bomber. The purpose of this paper is to discuss the application of stellar sighting techniques to the augmentation of inertial guidance for ballistic missiles. View full abstract»

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  • Digital Differential Analyzers vs General Purpose Digital Computers for Schuler-Tuned Inertial Navigation Systems

    Publication Year: 1963, Page(s):23 - 29
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1666 KB)

    A pure Schuler-tuned terrestrial inertial navigator with polar mode capability is considered. The general computing requirements for digital mechanizations are outlined and pertinent characteristics for digital differential analyzers (DDA) and general purpose (GP) digital computers are listed. Factors involved in choosing between the two, and combinations thereof, are discussed, It is concluded th... View full abstract»

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  • The Amplitude Statistics of Aircraft Radar Echoes

    Publication Year: 1965, Page(s):10 - 16
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (769 KB)

    Recorded CW radar echoes from a number of aircraft have been analyzed to determine the characteristics of the amplitude fluctuations and the extent to which these vary among different aircraft. The statistics of the echoes from four targets (two jets and two piston aircraft) were found to exhibit marked similarities; typically, the echo power was exponentially distributed, with a correlation time ... View full abstract»

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  • Beam Efficiency Limitations of Large Antennas

    Publication Year: 1964, Page(s):252 - 257
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2119 KB)

    The beam efficiency of an antenna may be defined as the ratio of the power radiated within the main beam to the total power radiated. The beam efficiency is derived for ideal rectangular and circular apertures, as a function of the edge-to-center amplitude ratio. Random phase errors are assumed to exist across the aperture. Various types of feeds for parabolic reflectors are also considered in rel... View full abstract»

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  • Radio-Telescope Antenna Parameters

    Publication Year: 1964, Page(s):225 - 232
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1965 KB)

    Principal antenna parameters which are useful in characterizing the electrical performance of radio-telescope antennas are defined and the relations between them are established. The application of these parameters to radio astronomical measurements is discussed. View full abstract»

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  • Radio Telescopes

    Publication Year: 1964, Page(s):187 - 198
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (9358 KB)

    A radio telescope is used in radio astronomy to measure the intensity of the radiation received from various parts of the sky. Such a telescope must be able both to detect and to locate faint radio sources of small angular size, and also to measure the brightness distribution across extended radio sources or over large sky areas. Ideally the telescope should be capable of making such measurements ... View full abstract»

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  • The Detection of the OH and Other Molecular Lines in the Radio Spectrum of the Interstellar Medium

    Publication Year: 1964, Page(s):156 - 165
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2443 KB)

    The detection of the 2П3/2, J= 3/2 Λ-doublet lines of O16H1 at 1665.36 Mc and 1667.40 Mc has provided radio astronomy with a second spectral line for investigation and has already given rise to a number of significant results. In this paper the nature of Λ-doublet levels are reviewed in an attempt to clarify the origin of the OH lines. The results of the OH observations are... View full abstract»

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  • An Example of Design for Minimum Total Cost, Counter-Flow Heat Exchangers

    Publication Year: 1964, Page(s):63 - 66
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    Many types of equipment have two costs: the cost of the work potential dissipated by the equipment in operation, and its initial capital cost. The correct design minimizes the total cost. A mathematical technique has recently been developed for obtaining algebraic expressions for the minimum cost, as well as for the optimum design parameters in terms of the physical parameters of the system and of... View full abstract»

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  • Analysis and Optimization of Laser Ranging Techniques

    Publication Year: 1964, Page(s):22 - 28
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1561 KB)

    The general criteria for the operational performance of laser ranging systems are considered in quantitative terms with emphasis being placed on the optimization of systems which must meet specific operational requirements. The entire range-determining process is discussed on a statistical basis and the target detection capabilities of a system are defined in terms of the relative probabilities of... View full abstract»

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  • High-Frequency Skywave Communication System Performance in a Nuclear Environment

    Publication Year: 1965, Page(s):125 - 130
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1157 KB)

    The purpose of this paper is to outline a model which can be used to predict the performance of HF skywave radio circuits in a nuclear environment. Despite a wealth of literature on the subject of signal absorption and attenuation, little has been discussed to date about prediction of performance levels in such an environment. The proposed prediction model for system performance is an empirical mo... View full abstract»

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  • A Model of the Plastic Neuron

    Publication Year: 1963, Page(s):243 - 253
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2190 KB)

    Substantial physiological evidence indicates that neuron thresholds and synaptic weights in living creatures are adjusted by mechanisms quite different from those that have ordinarily been proposed in neural net investigations. This paper presents a theoretical model of the plastic neuron in which threshold and synaptic weights are adjusted solely on the basis of the time history of afferent and e... View full abstract»

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  • Radar Backscatter from the Earth's Ionosphere

    Publication Year: 1964, Page(s):206 - 210
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1146 KB)

    The role of radar backscatter observations in ionospheric studies is outlined. The theoretical developments are described that form the basis for ground-based measurements of electron density, electron temperature, ion temperature, and ionic composition at ionospheric heights. Observations of the first three parameters have been successful. Observation of the fourth parameter, ionic composition, i... View full abstract»

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  • Optimum Signal Design and Processing for Reverberation-Limited Environments

    Publication Year: 1965, Page(s):212 - 229
    Cited by:  Papers (56)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2664 KB)

    In this paper we discuss the problem of designing optimum signals and receivers for an active sonar system operating in an environment in which the principal cause of interference is reverberation. We have considered only the problem of target detection (as opposed to the problem of range or Doppler estimation). View full abstract»

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  • Statistical Description of Nonlinear Signal Processing in Array Antenna Systems

    Publication Year: 1965, Page(s):237 - 246
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3082 KB)

    A statistical analysis is made of a superlimited phased array when a sinusoid and Gaussian noise are independently introduced into the element-channel antenna elements. A mathematical expression is derived for the probability-density function of the beam-channel envelope in tenns of element-channel signal-to-noise power ratio and angular position of target from main beam. This density function is ... View full abstract»

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  • Radio Astronomy Receivers

    Publication Year: 1964, Page(s):264 - 272
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1672 KB)

    A general survey of the principles of radio astronomy receivers is presented. System noise temperature, the sensitivity of different receiver types, and the calibration of receivers are studied. A total-power receiver is analyzed as a basic radio telescope receiver and. the results are used to obtain the performance of other receiver types such as the Dicke receiver, Graham's receiver, correlation... View full abstract»

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  • Effects of Phase Errors on Resolution

    Publication Year: 1965, Page(s):4 - 9
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (956 KB)

    The mathematical problem consists of determining the spread of the Fourier transform of function when the function is modified by a multiplicative factor exp jα(t), where α is a stationary random process. Let F(ω) be the Fourier transform of f(t) and Fm(ω) be the transform of f(t) exp jα(t). For example, f may be the illumination function of a linear antenna... View full abstract»

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  • An Optimum Design of Ambiguity Function, Antenna Pattern, and Signal for Side-Looking Radars

    Publication Year: 1965, Page(s):264 - 278
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3885 KB)

    The design of antenna pattern and transmitted signal for a coherent-side-looking (range-azimuth) synthetic antenna radar is studied. The general design criterion is to minimize all spurious responses in the ambiguity function under the restraints of finite antenna aperture and signal bandwidth. The problem is completely solved for any set of consistent constraints. The interplay between aperture s... View full abstract»

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  • A Technique for the Generation of Highly Linear FM Pulse Radar Signals

    Publication Year: 1965, Page(s):32 - 38
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1430 KB)

    Some radar systems employing a linear FM pulse require FM linearity not easily obtainable from present generation methods. A technique is developed whereby average linearities of better than 0.1 per cent may be realized by active generation methods. Two methods of implementation are described that synthesize the waveform by generating a staircase-type stepped FM waveform and "filling in" the steps... View full abstract»

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  • Tactile Presentation of Visual Information

    Publication Year: 1963, Page(s):108 - 113
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1429 KB)

    Psychophysical experiments on tactile sensations were performed to determine parameters needed in the design of a tactile display containing about one hundred stimulators. This tactile displayis being used to present spatial and temporal patterns to the skin to investigate the pattern recognition capabilities of the tactile sense. Airjet tactile stimulators were used in the experiments because the... View full abstract»

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  • On Fundamental Limitations of Chemical and Bionic Information Storage Systems

    Publication Year: 1963, Page(s):205 - 208
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1104 KB)

    Bionic information storage combines stability and ultramicrominiaturization with self-replication. Rough estimates are given of thermodynamic limitations on stability and bit storage density and observations made on additional constraints self-replicative ability might entail. Reasonable storage stability requirement is bit configurational energy ≥20 kT (~0.5 ev or 10-12 erg) to prevent th... View full abstract»

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  • Systems Approach to Theory of Computing Systems

    Publication Year: 1964, Page(s):94 - 102
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1983 KB)

    A formal system is introduced which is capable of representing a universal Turing machine. This enables the input, state-output representation of the computing systems that allows the study on a unified basis of the larger systems involving computer-like subsystems. It has been shown how some problems and concepts associated with the theory of Turing machines can be applied to engineering system a... View full abstract»

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  • Practical Aspects of State-Space Methods, Part I-System Formulation and Reduction

    Publication Year: 1964, Page(s):81 - 93
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1628 KB)

    Practical methods, suited to digital computers, are presented for the formulation, reduction, and combination of systems in state-space form. Formulation is illustrated in two ways. The coefficients of a linearized set of equations describing a simple superheater are entered directly in the matrices of the state-space equations. Transfer functions of a control system are decomposed into first-orde... View full abstract»

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  • Large Artificial Nerve Net (LANNET)

    Publication Year: 1963, Page(s):234 - 243
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2639 KB)

    This report describes the implementation of a high speed self-organizing system based on the reinforcement principle. The self-organizing binary logical network is used as the primary component in the system. The learning system is a 1024 decision element netwolk with a general purpose program to enable the operator to simulate a large number of problems to study machine learning. The simulation o... View full abstract»

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  • Status of Military Satellite Communications Research and Development

    Publication Year: 1965, Page(s):99 - 107
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3018 KB)

    With the rapid development of the "space age," many applications of orbiting satellites are being implemented primarily for scientific purposes. Among the first practical applications, with broad military and commercial implications, is communicationsvia an active satellite repeater. A military research and development program for such communications capability is underway to satisfy the ever-pres... View full abstract»

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  • A Two-Step Sequential Procedure for Improving the Cumulative Probability of Detection in Radars

    Publication Year: 1965, Page(s):278 - 287
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6220 KB)

    Sequential detection procedures, which may be used with phased-array radars, can provide a significant improvement in search capability as compared to uniform scanning. This paper discusses the improvement in cumulative detection probability (the probability that an approaching target is detected before it reaches a given range) which can be obtained with the two-step sequential test, first descri... View full abstract»

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  • Troposcatter for Tactical Communications

    Publication Year: 1965, Page(s):137 - 143
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1479 KB)

    Tactical communications systems are characterized by severe limitations on size, weight, and setup time, which are dictated by the mobility requirements of the tactical environment. Conventional troposcatter systems, which almost universally use frequency modulation and space diversity, are inherently at a disadvantage in such an environment. By combiing pulse modulation with frequency diversity, ... View full abstract»

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Aims & Scope

This Transactions ceased publication in 1965. The new retitled publication is IEEE Transactions on Aerospace and Electronic Systems.

Full Aims & Scope