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 (2)
    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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  • Radar System Performance Charts

    Publication Year: 1965, Page(s):255 - 263
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (2287 KB)

    The fundamental limits to radar performance in search and tracking can be expressed on three charts, in terms of products involving transmitted power, antenna gain, and effective aperture area. Locations of past and present radar systems on these charts disclose evolutionary trends in system design and indicate regions of practical and economic balance between transmitter and antenna complexity, i... 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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  • 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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  • Measurements of UHF and L-Band Radar Clutter in the Central Pacific Ocean

    Publication Year: 1965, Page(s):39 - 44
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (2062 KB)

    Measurements of clutter with the TRADEX radar at UHF and L band are described. Clutter is shown to be due to sea return and returns from clouds. Sea clutter predominates at ranges less than 13 nmi, values of σ0 of -100 dB being typical at both frequencies. Coherent scattering from clouds is postulated, and the observed frequency independence of the cloud retums is offered as supporting evi... 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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  • 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 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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  • Effect of Shipboard Inertial Navigation System Position and Azimuth Errors on Sea-Launched Missile Radial Miss

    Publication Year: 1963, Page(s):45 - 56
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (2080 KB)

    The effect of position and azimuth errors in a shipborne inertial navigation system on the radial miss of a sea-launched ballistic missile which uses the shipborne system as a reference is discussed. The shipborne system is assumed to be reset and biased, using external position fixes. As a result of this resetting procedure, the latitude, longitude and azimuth errors are found to be statistically... 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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  • A Pattern Recognition Function of Integral Geometry

    Publication Year: 1963, Page(s):196 - 199
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (868 KB)

    A function of integral geometry, called the PF image transformation, which is characteristic of the shape of an optical image falling on a viewing retina is defined. Machine programming of the image transformation has been accomplished. Results of the machine computation of the function for a set of random imagery are displayed. It is demonstrated that the transformation yields automatic recogniti... View full abstract»

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  • Influence of System Parameters on Airborne Microwave Radiometer Design

    Publication Year: 1963, Page(s):296 - 302
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1271 KB)

    The principles of operation of broad-band microwave radiometers are discussed. Formulas are given for the performance of various receiver configurations, and the effects of variations in stability of gain, noise figure, and reference signal are discussed. A range equation is formulated showing the interrelationships among the various system parameters of a typical airborne mapping radiometer. Figu... 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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  • Spatial Ambiguity and Resolution for Array Antenna Systems

    Publication Year: 1965, Page(s):229 - 237
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1684 KB)

    The signal ambiguity function is derived and analyzed for radar (sonar) systems employing array antennas. It is shown that angle resolution is essentially independent of range-Doppler resolution in the main antenna beam and that the antenna directivity function can have a strong effect on waveform design. It is also shown that angle ambiguity is appreciably influenced by signal bandwidth; in parti... 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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  • 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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  • A Discrete Model for Eye Tracking Movements

    Publication Year: 1963, Page(s):113 - 115
    Cited by:  Papers (54)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1118 KB)

    A sampled data model was developed to describe the major characteristics of the eye movement control system for nonpredictive tracking. It agrees with experimental transient responses and frequency characteristics for normal eye movements during following of a moving target in a horizontal plane. Furthermore, the model predicts the observed changes in transient and frequency characteristics and th... View full abstract»

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  • Systems and Information

    Publication Year: 1963, Page(s):94 - 97
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1054 KB)

    Information theory is essentially a method for retaining some knowledge of cause-effect relations when the causes, and their effects, become so many that detailed knowledge of each pair is abandoned, while an over-all check is retained that at least the number of causes is sufficient to account for the number of effects. Communication theory has been severely restricted by its original concentrati... 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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  • 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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  • Type N-Integral Space Tracking Configurations

    Publication Year: 1965, Page(s):116 - 124
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (4456 KB)

    Theoretical and computer investigations into type N-integral tracking configurations for space tracking radar systems have established significant advantages in the use of high-order tracking loop types. This paper presents the results of a theoretical and computer investigation that focuses attention on type N-integral tracking configurations in space-tracking radar systems. The type N-tracking c... 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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  • A Flame Attenuation Analysis Using State-of-the-Art Millimeter Techniques

    Publication Year: 1965, Page(s):172 - 181
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (2575 KB)

    Maintaining reliable guidance links between inflight missiles and ground-based radar or radio guidance equipment is a problem becoming more difficult with advanced system concepts and electromagnetic environment complexity. A major difficulty encountered is signal loss caused by the ionization characteristics of the rocket motor exhaust (plasma), particularly for advanced propellants. This article... View full abstract»

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  • Part II: Degradation of Detectability Due to Clipping

    Publication Year: 1965, Page(s):208 - 211
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (733 KB)

    The output signals from the hydrophones in a directional sonar array are frequently clipped before being processed further. The effect of this is analyzed in this paper by comparing the figures of merit of likelihood-ratio detectors operating on clipped and unclipped data. It is found that if the number of hydrophones is large, the figure of merit is reduced by a factor of about 2/π from t... View full abstract»

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  • Attitude Reference Properties of Inertial Navigation Systems

    Publication Year: 1963, Page(s):15 - 18
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (890 KB)

    Most attitude reference systems function quite well under laboratory conditions but suffer considerable degradation in operational environments. A discussion is given of the excellent attitude reference information inherent in inertial navigation systems. Some limitations in reference system accuracy as a function of the characteristics of the gyroscopes used are given. The discussion centers prim... View full abstract»

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  • The Spinning Reflector Technique for Ruby Laser Pulse Control

    Publication Year: 1964, Page(s):13 - 21
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (2390 KB)

    A method of obtaining high peak power pulses from a ruby laser oscillator by controlling the resonant cavity Q with a spinning reflector technique is described. Basic principles are discussed. A theory regarding the multiple pulse problem of slow Q switching is presented. Practical methods of eliminating critical alignment procedures and increasing effective switching speed are explained. Experime... View full abstract»

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  • Future Trends in Energy Conversion on a Very Large Scale

    Publication Year: 1964, Page(s):67 - 73
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1421 KB)

    The expected philosophy in the future trend for energy conversion on a large scale is outlined in this paper. Following a brief review of the basic concepts of irreversible thermodynamics a scheme is described which outlines a method of searching for new conversion processes. Some examples are then given to demonstrate the method. 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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Aims & Scope

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

Full Aims & Scope