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IEE Proceedings - Radar, Sonar and Navigation

Issue 3 • Date Jun 1995

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Displaying Results 1 - 8 of 8
  • MUSIC and maximum likelihood techniques on two-dimensional DOA estimation with uniform circular array

    Publication Year: 1995, Page(s):105 - 114
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (504 KB)

    The authors describe the application of multiple signal classification (MUSIC) and maximum likelihood (ML) techniques to the joint azimuthal and elevational directions-of-arrival (AEDOA) estimation with a uniform circular array. Both deterministic and random source signal models are considered. The asymptotic statistical properties of MUSIC and ML estimation error vectors for AEDOA parameters are ... View full abstract»

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  • Direction finding system using symmetric-pair antenna arrays

    Publication Year: 1995, Page(s):130 - 136
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (536 KB)

    A new type of direction finder that uses symmetric-pair antenna arrays is presented. Compared to conventional direction finding (DF) systems, no highly accurate phase or amplitude measurements are necessary, since symmetric-pair DF systems only measure polarities and determine both the azimuth and elevation angle of a received signal from that polarity pattern. The principle of direction finding w... View full abstract»

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  • C-RISE algorithm for eigendecomposition of Hermitian pencils

    Publication Year: 1995, Page(s):97 - 104
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (532 KB)

    An order-recursive algorithm is presented for the generalised eigendecomposition of definite Hermitian pencils. An important feature is that it consists of a number (equal to the current order) of independent iterative eigenvalue searches followed by direct computation of the corresponding eigenvectors. The independence aspect produces the potential for parallel hardware implementations. The order... View full abstract»

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  • Joint phase and envelope densities of a higher order

    Publication Year: 1995, Page(s):123 - 129
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (436 KB)

    In dealing with narrowband noise processes the density p(R1 ,R2,Δ) in which R1 and R2 are envelope samples and Δ is the phase difference can play an important role in determining system design features such as diversity performance, crossing rates, error probabilities, optimum processing and frequency or phase distributions. Standard texts on... View full abstract»

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  • Method for array calibration in high-resolution sensor array processing

    Publication Year: 1995, Page(s):90 - 96
    Cited by:  Papers (31)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (460 KB)

    With few exceptions, most high-resolution sensor array algorithms for direction of arrival (DOA) estimation are sensitive to the errors in the nominal array manifold. Deviations from the true array manifold, typically resulting from mutual coupling, array channels mismatch and sensor positioning errors, can seriously degrade the algorithms' performance. Several array calibration algorithms have be... View full abstract»

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  • Adaptive-update-rate target tracking for phased-array radar

    Publication Year: 1995, Page(s):137 - 143
    Cited by:  Papers (12)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (444 KB)

    An adaptive-update-rate target-tracking algorithm is proposed for a phased-array radar. The algorithm is based on the interacting-multiple-model (IMM) algorithm. The purpose of this IMM algorithm is twofold: to estimate and predict the target states; and to estimate the level of the dynamic process noise. The estimate of the process-noise level is used to determine the update interval adapted to t... View full abstract»

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  • DOA estimation by ARMA modelling and pole decomposition

    Publication Year: 1995, Page(s):115 - 122
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (564 KB)

    A high-resolution DOA-estimation technique is proposed to deal with unknown noise-spatial-covariance structure and unknown array-sensor gain. By modelling the source signals as autoregressive moving-average (ARMA) processes with unknown parameters, a formula is derived which relates the source DOAs with the source poles and array-covariance functions. A virtual data matrix is formed, independent o... View full abstract»

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  • Energy saving by coherent sequential detection of radar signals with unknown Doppler shift

    Publication Year: 1995, Page(s):145 - 152
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (500 KB)

    A coherent sequential test is discussed. Instead of forming a bank of filters, a combination of the autocorrelation estimates (ACE) of the received signal is used to form the ACE test function. These estimates are computed by a running accumulation of signal products and therefore the test function is updated with each new signal. The proposed coherent sequential test is compared with the incohere... View full abstract»

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Aims & Scope

IEE Proceedings Radar, Sonar and Navigation covers the theory and practice of systems involving the processing of signals for radar, radio location, radio navigation and surveillance purposes.

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