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IEEE Transactions on Aerospace and Electronic Systems

Issue 1 • Jan. 1999

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Displaying Results 1 - 25 of 36
  • Comments on "Bearings-only and Doppler-bearing tracking using instrumental variables"

    Publication Year: 1999, Page(s):370 - 371
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (166 KB)

    The work carried out by Y.T. Chan and S.W. Rudnicki [ibid., vol. 28, pp. 1076-82, 1992] is very useful for studies in underwater target motion analysis. They presented a simple procedure so that the dimension of the target state vector need not be increased. While implementing their work, I tried to rederive the equations and found that there is a confusion in one of the equations, which I discuss... View full abstract»

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  • Call for papers

    Publication Year: 1999, Page(s): 380
    Request permission for commercial reuse | PDF file iconPDF (23 KB)
    Freely Available from IEEE
  • Transmitter model for the design of communication satellites

    Publication Year: 1999, Page(s):31 - 42
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1016 KB)

    The paper proposes a modeling approach for satellite communication systems able to relate analytically the on-board transmitter reliability to the effective isotropic radiated-power (EIRP) requirement. The latter, in fact, plays a key role in system design, yielding a direct impact on transmitter configuration and technological features. In addition, that requirement is directly related to the ant... View full abstract»

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  • Robust variable structure speed control for induction motor drive

    Publication Year: 1999, Page(s):215 - 224
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (876 KB)

    In order to eliminate the effect of parameter variation on field-oriented control for induction motor drive, an adaptation algorithm for tuning the rotor time-constant is proposed. Based on the adaptive observation of the rotor flux linkages, the rotor time-constant is adapted to obtain an exact indirect-field-oriented control (IFOC). In this proposed algorithm, a related function to the variation... View full abstract»

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  • Hybrid high frequency AC power distribution architecture for telecommunication systems

    Publication Year: 1999, Page(s):138 - 147
    Cited by:  Papers (22)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (804 KB)

    A novel high frequency hybrid power distribution system for telecommunication applications is presented. The proposed hybrid system combines the advantages of both the sinusoidal voltage and current types of high frequency distribution systems and it has advantages such as connectorless power transfer, fuseless protection, sinusoidal voltage and current distribution and, high overall system effici... View full abstract»

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  • Robust detection of small stochastic signals

    Publication Year: 1999, Page(s):15 - 30
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1120 KB)

    We consider the problem of detecting a stochastic signal in white not-necessarily-Gaussian noise, using vector valued observations. The locally optimal detector is presented and its performance evaluated. The least-favorable signal spectrum and noise density (over specified classes) are found, and it is shown that the detector using these least-favorable assumptions is minimax robust. The class of... View full abstract»

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  • Precision large scale air traffic surveillance using IMM/assignment estimators

    Publication Year: 1999, Page(s):255 - 266
    Cited by:  Papers (79)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1104 KB)

    We present the development and implementation of a multisensor-multitarget tracking algorithm for large scale air traffic surveillance based on interacting multiple model (IMM) state estimation combined with a 2-dimensional assignment for data association. The algorithm can be used to track a large number of targets from measurements obtained with a large number of radars. The use of the algorithm... View full abstract»

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  • Phase quantized SAR signal processing: theory and experiments

    Publication Year: 1999, Page(s):201 - 214
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2548 KB)

    A complete theory of synthetic aperture radar (SAR) processing from phase-only data is presented, for both analogue and coded raw signals and reference functions. Appropriate processing architectures are presented as well as quality indexes to judge performance of the selected coding. The analysis encompasses both images and interferometric fringes for interferometry SAR (IFSAR) application. Theor... View full abstract»

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  • Kalman filtering approach to multispectral/hyperspectral image classification

    Publication Year: 1999, Page(s):319 - 330
    Cited by:  Papers (10)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1480 KB)

    Linear unmixing is a widely used remote sensing image processing technique for subpixel classification and detection where a scene pixel is generally modeled by a linear mixture of spectral signatures of materials present within the pixel. An approach, called linear unmixing Kalman filtering (LUKF), is presented, which incorporates the concept of linear unmixing into Kalman filtering so as to achi... View full abstract»

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  • Design and analysis of a regulated peak-power tracking system

    Publication Year: 1999, Page(s):84 - 92
    Cited by:  Papers (11)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    A regulated peak-power tracking (RPPT) system for space power application is proposed. Large-signal stability analysis is provided to understand the main four different modes of operations of the system, as well as the mode transitions. A simple and effective control scheme for the system is also proposed. Small-signal analysis is performed thereafter to provide design optimization, and the predic... View full abstract»

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  • Multiparametric importance sampling for simulation of radar systems

    Publication Year: 1999, Page(s):123 - 137
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1136 KB)

    The performances of the importance sampling (IS) techniques are improved by using multiparametric distortions of the input random processes. The analysis of different constant false-alarm rate (CFAR) algorithms confirms the usefulness of this method. The potential of this new approach is fully exploited if optimization techniques are used to obtain the optimum distortions and to avoid bias in the ... View full abstract»

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  • Radar synthetic vision system for adverse weather aircraft landing

    Publication Year: 1999, Page(s):2 - 14
    Cited by:  Papers (14)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2500 KB)

    A synthetic vision system (SVS) is described for aid in landing aircraft in poor weather conditions. The system consists of a scanning millimeter wave radar, heads-up display and real-time signal processing hardware. A suite of fast image processing algorithms are used for enhancing and displaying of the imagery. The system has been tested in number of tower and flight demonstration during actual ... View full abstract»

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  • Multiple-model estimation with variable structure. IV. Design and evaluation of model-group switching algorithm

    Publication Year: 1999, Page(s):242 - 254
    Cited by:  Papers (33)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1204 KB)

    For pt. III see ibid., vol. 35, pp. 225-41 (1999). A variable-structure multiple-model (VSMM) estimator, called model-group switching (MGS) algorithm, has been presented in Part III, which is the first VSMM estimator that is generally applicable to a large class of problem with hybrid (continuous and discrete) uncertainties. In this algorithm, the model-set is made adaptive by switching among a nu... View full abstract»

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  • Automatic target recognition using enhanced resolution SAR data

    Publication Year: 1999, Page(s):157 - 175
    Cited by:  Papers (50)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2412 KB)

    Using advanced technology, a new automatic target recognition (ATR) system has been developed that provides significantly improved target recognition performance compared with ATR systems that use conventional synthetic aperture radar (SAR) image-processing techniques. This significant improvement in target recognition performance is achieved by using a new superresolution image-processing techniq... View full abstract»

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  • Theoretical analysis of the sequential lobing technique

    Publication Year: 1999, Page(s):282 - 293
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    A theoretical analysis of the sequential lobing technique for target angle tracking is presented. The signal power received by each antenna beam is assumed to pass through a logarithmic amplifier. A rigorous statistical approach is adopted in the analysis for both non-fluctuating and fluctuating targets. Closed form expressions are derived for the normalized mean error and rms error of the angle e... View full abstract»

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  • SAR imaging of moving targets

    Publication Year: 1999, Page(s):188 - 200
    Cited by:  Papers (276)  |  Patents (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1644 KB)

    A method of forming synthetic aperture radar (SAR) images of moving targets without using any specific knowledge of the target motion is presented. The new method uses a unique processing kernel that involves a one-dimensional interpolation of the deramped phase history which we call keystone formatting. This preprocessing simultaneously eliminates the effects of linear range migration for all mov... View full abstract»

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  • Block floating point for radar data

    Publication Year: 1999, Page(s):308 - 318
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (916 KB)

    Integer, floating point, and block floating point (BFP) data formats are analyzed and compared in order to establish the mathematical tools for selection of an optimal format which fulfils the demands of high resolution radar (SAR) data to large dynamic range and adequate S/N. The analysis takes quantization noise and saturation distortion into account and concludes that it is preferred to use sma... View full abstract»

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  • Doppler ambiguity resolution using optimal multiple pulse repetition frequencies

    Publication Year: 1999, Page(s):371 - 379
    Cited by:  Papers (8)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (540 KB)

    Ferrari, Berenguer, and Alengrin (ibid., vol. 33, pp. 738-51, 1997) proposed an algorithm for velocity ambiguity resolution in coherent pulsed Doppler radar using multiple pulse repetition frequencies (PRFs). In this algorithm, two step estimations (folded frequency and ambiguity order) for the Doppler frequency is used by choosing particular PRF values. The folded frequency is the fractional part... View full abstract»

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  • 3D guidance law modeling

    Publication Year: 1999, Page(s):72 - 83
    Cited by:  Papers (31)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1064 KB)

    Proportional navigation (PN) guidance laws (GLs) have been widely used and studied in the guidance literature. But most of the guidance literature on PN has concentrated on the evaluation of empirical PNGLs or GLs obtained from very specific optimality considerations. The authors present a novel approach (called guidance laws modeling) to derive new GLs. They consider the basic requirements of cap... View full abstract»

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  • Adaptive control and stabilization of elastic spacecraft

    Publication Year: 1999, Page(s):115 - 122
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB)

    This work treats the question of large angle rotational maneuver and stabilization of an elastic spacecraft (spacecraft-beam-tip body configuration). It is assumed that the parameters of the system are completely unknown. An adaptive control law is derived for the rotational maneuver of the spacecraft. Using the adaptive controller, asymptotically decoupled control of the pitch angle of the space ... View full abstract»

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  • Explicit expressions for debiased statistics of 3D converted measurements

    Publication Year: 1999, Page(s):368 - 370
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    The method for tracking based on Kalman filter with debiased consistent converted 2D measurements was given and discussed by D. Lerro et al. (1993) and Y. Bar-Shalom et al. (1993). In this work explicit expressions for debiasing compensation terms and debiased covariance statistics related to the 3D case are presented. The proposed procedure can be employed in active sonar systems or long range ra... View full abstract»

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  • High resolution radar clutter statistics

    Publication Year: 1999, Page(s):43 - 60
    Cited by:  Papers (82)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1628 KB)

    The generalized compound probability density function (GC-pdf) is presented for modeling high resolution radar clutter. In particular, the model is used to describe deviation of the speckle component from the Rayleigh to Weibull or other pdfs with longer tails. The GC-pdf is formed using the generalized gamma (GΓ) pdf to describe both the speckle and the modulation component of the radar clu... View full abstract»

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  • Multiple-model estimation with variable structure. III. Model-group switching algorithm

    Publication Year: 1999, Page(s):225 - 241
    Cited by:  Papers (45)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1528 KB)

    A general multiple-model (MM) estimator with a variable structure (VSMM), railed model-group switching (MGS) algorithm, is presented. It assumes that the total set of models can be covered by a number of model groups, each representing a cluster of closely related system behavior patterns or structures, and a particular group is running at any given time determined by a hard decision. This algorit... View full abstract»

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  • Dynamic modeling of flexible multibody structures

    Publication Year: 1999, Page(s):148 - 156
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (652 KB)

    This work is primarily concerned with the development of a mathematical formulation capable of treating the problems of maneuvering and control of flexible multibody structures. The analytical formulation is based upon equations of motion in terms of quasi-coordinates derived for each substructure independently. The individual substructures are made to act as a single structure by means of a consi... View full abstract»

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  • Super resolution SAR imaging via parametric spectral estimation methods

    Publication Year: 1999, Page(s):267 - 281
    Cited by:  Papers (36)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5428 KB)

    Super resolution synthetic aperture radar (SAR) image formation via sophisticated parametric spectral estimation algorithms is considered. Parametric spectral estimation methods are devised based on parametric data models and are used to estimate the model parameters. Since SAR images rather than model parameters are often used in SAR applications, we use the parameter estimates obtained with the ... 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