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IEEE Transactions on Aerospace and Electronic Systems

Issue 3 • Date May 1988

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Displaying Results 1 - 13 of 13
  • Clutter suppression using recursive and nonrecursive MTI filters

    Publication Year: 1988, Page(s):210 - 217
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    The author calculates the effectiveness of clutter suppression of a moving-target-indicator (MTI) filter in tandem with a fast-Fourier-transform (FFT) Doppler filter bank, taking into account the transient response of the MTI filter. Both recursive and nonrecursive filters are considered. The analysis is extended to the high-pulse-repetition-frequency (PRF) case with clutter fold over. The results... View full abstract»

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  • New results on linear prediction for clutter cancellation

    Publication Year: 1988, Page(s):275 - 285
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (656 KB)

    Some moving-target indicator (MTI) techniques are reviewed and those based on the linear prediction theory are examined. A description is given of the effects of the position of the reference sample in an MTI processor on cancelling clutter in a radar system. The analysis of this generalized linear prediction MTI is based on the evaluation of the receiving operating characteristics (ROCs), assumin... View full abstract»

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  • Maximum a posteriori approach to object recognition with distributed sensors

    Publication Year: 1988, Page(s):309 - 313
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    The maximum a posteriori (MAP) estimation concept is applied to the problem of object recognition with several distributed sensors. It is shown that in binary object recognition the MAP object recognition also minimizes the mean-square error. Simulation results show that the performance of the MAP object recognition is, in general, at least as good as the best performance by the sensors used View full abstract»

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  • Generalized linear solution of proportional navigation

    Publication Year: 1988, Page(s):231 - 238
    Cited by:  Papers (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    Proportional navigation (PN) equations are not solvable in closed form. Linearized solutions have been widely used for PN system analysis and design, but these are based on overly restrictive assumptions regarding the initial geometry, and are valid only for near-tail-chase pursuits. A generalization of the linearized approach is presented which yields more-accurate estimates of pursuer lateral ac... View full abstract»

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  • Nth-order dynamics target observability from angle measurements

    Publication Year: 1988, Page(s):305 - 308
    Cited by:  Papers (58)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB)

    Necessary and sufficient conditions are presented for the observability of the target's Nth-order dynamics, given direction measurements. The derivations are extremely simple and do not require the examination of an observability matrix or nonlinear differential equations. Previously published observability requirements for the first-order dynamics are shown to be necessary but not suffic... View full abstract»

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  • Comparison of resonant topologies in high-voltage DC applications

    Publication Year: 1988, Page(s):263 - 274
    Cited by:  Papers (117)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (896 KB)

    Because of their tolerance of transformer nonidealities, resonant converters are considered to be well-suited to high-voltage applications. The series and parallel resonant topologies, as well as a newly discovered hybrid resonant topology are compared for high-voltage applications. Design criteria which incorporate transformer nonidealities are developed and used in the construction of high volta... View full abstract»

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  • A new look at nonseparable synthetic aperture radar processing

    Publication Year: 1988, Page(s):218 - 223
    Cited by:  Papers (17)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (508 KB)

    The author examines the nonseparable, template correlation approach to digital-strip-mode synthetic-aperture radar (SAR) phase history processing and concludes that it can now outperform the traditional separable approaches in the areas of speed, image quality, control simplicity, and flexibility. A working nonseparable frequency-domain SAR processor is described and evaluated. The image quality i... View full abstract»

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  • Sequences and arrays with perfect periodic correlation

    Publication Year: 1988, Page(s):287 - 294
    Cited by:  Papers (37)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    Properties and methods for synthesizing sequences with perfect periodic autocorrelation functions and good energy efficiency are discussed. The construction is extended to two-dimensional perfect arrays. The construction methods used are based mainly on a search in the frequency domain and on a multiplication theorem for periodic sequences and arrays View full abstract»

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  • Transient processes and stability in an LC chopper

    Publication Year: 1988, Page(s):239 - 247
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (612 KB)

    The analysis of the transient and steady-state processes in LC choppers is presented. The method, used previously for the analysis of processes in grid-connected and self-commutated converters, is adjusted for analysis of LC chopper's processes. The difference equations describing these processes, are obtained and solved. The analytical solution of the problem and the conditions... View full abstract»

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  • Tracking multiple targets with correlated measurements and maneuvers

    Publication Year: 1988, Page(s):313 - 315
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (200 KB)

    The problem of tracking N targets with correlation in both measurement and maneuver statistics is solved by transforming to a coordinate frame in which the N targets are decoupled. For the case of N identical targets, the decoupling is shown to coincide with a transformation to a set of nested center-of-mass coordinates. Absolute and differential tracking accuracies are ... View full abstract»

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  • Strip mode processing of spotlight aperture radar data

    Publication Year: 1988, Page(s):225 - 230
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    The author shows how to process deramped (e.g., typical spotlight mode) synthetic-aperture-radar (SAR) data using mode processors, with no restrictions on antenna pointing. The basis of the approach is that although the deramped data does not contain a spatially invariant two-dimensional response to a point target, the range-compressed deramped data does. Range compression of the deramped data is ... View full abstract»

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  • Modeling and simulation of spacecraft power systems

    Publication Year: 1988, Page(s):295 - 304
    Cited by:  Papers (32)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    Modeling of a complete spacecraft power processing system is presented, using the Boeing EASYS software. Component models are developed, and several system models including a solar array switching system, a partially shunted solar system, and cosmic background explorer (COBE) system are simulated. The modes of operation of the power system, such as shunt mode, battery-charge mode, and battery-disc... View full abstract»

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  • An adaptive controller for current-fed induction motor

    Publication Year: 1988, Page(s):250 - 262
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    A model reference speed adaptive controller for a current-fed induction motor drive is proposed. It uses a proportional-plus-integral (PI) adaptation to satisfy the hyperstability condition for taking care of the load and machine parameter changes of the drive. The available information on the states and output of the reference model as well as the plant output are all that are required for the co... 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