By Topic

IEE Proceedings - Radar, Sonar and Navigation

Issue 5 • Date Oct 1997

Filter Results

Displaying Results 1 - 9 of 9
  • Aircraft vertical profile prediction based on surveillance data only

    Publication Year: 1997, Page(s):301 - 307
    Cited by:  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (612 KB)

    The paper is concerned with aircraft vertical profile prediction. It presents methods which combine stored performance characteristics and trajectory observation data to predict the profile. Also, it derives some new methods which estimate the trajectory defining coefficients directly from vertical surveillance data. Performance results are also included for comparison between the category of meth... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Performance evaluation of an algorithm for multiple target angle tracking

    Publication Year: 1997, Page(s):252 - 258
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (788 KB)

    The authors evaluate the performance of an algorithm for passive angles-only tracking of multiple moving targets. This algorithm combines a beamforming algorithm and the Kalman filter to solve the data association problem, which arises in multiple target tracking. Three beamforming algorithms are considered. These algorithms are based on the maximum likelihood method and retrieve the directions of... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Use of curvilinear SAR for three-dimensional target feature extraction

    Publication Year: 1997, Page(s):275 - 283
    Cited by:  Papers (17)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (820 KB)

    The use of curvilinear synthetic aperture radar (CLSAR) is considered for three-dimensional feature extraction of small targets consisting of a small number of distinct point scatterers. CLSAR does not suffer from the ambiguities suffered by interferometric SAR. As CLSAR is a relatively new technology, a self-contained detailed derivation of the data model is presented. The Cramer-Rao bounds of th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • CFAR binary integration detection in nonhomogeneous partially correlated clutter

    Publication Year: 1997, Page(s):293 - 300
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (616 KB)

    The problem of binary integration detection (M-out-of-L detectors) of a Swerling II target model in nonhomogeneous partially correlated clutter is considered. The clutter is taken to be nonhomogeneous and consists of a step discontinuity, The low level contains independent thermal noise while the high level is assumed to contain spatially correlated clutter. The authors propose a new censoring pro... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Adaptivity of a real-symmetric array by DOA estimation and null steering

    Publication Year: 1997, Page(s):245 - 251
    Cited by:  Papers (2)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (696 KB)

    An efficient two-step adaptive algorithm is presented for a uniformly spaced linear array using symmetric amplitude only control (SAOC). In the first step of the algorithm, the directions of arrival (DOAs) of the interfering signals are estimated using the noise-subspace eigenvectors of a real-symmetric covariance matrix, which has a dimension half that of the array. As the dimension of the proble... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • IQML algorithm for multiple signal parameter estimation

    Publication Year: 1997, Page(s):237 - 244
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (840 KB)

    The problems of one-dimensional and two-dimensional (1-D and 2-D) parameter estimation based on the iterative quadratic maximum likelihood (IQML) algorithm are considered. For the 1-D frequency or source direction estimation problem, the inefficiency of two existing versions of the algorithm is addressed. An improved algorithm is obtained by using a new consistent nontriviality constraint. In addi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Simulation studies of moving-target detection: a new approach with Wigner-Ville distribution

    Publication Year: 1997, Page(s):259 - 265
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (652 KB)

    The authors discuss the application of Wigner-Ville distribution (WVD) for moving-target detection (MTD) in a typical ground-based radar. The proposed technique enhances the target-detection capability using the fact that the sidelobe levels in the Wigner spectrum are very small in magnitude. This in turn facilitates the realisation of the Doppler-filter bank by the WVD without resorting to additi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Maximum-likelihood ISAR image autofocusing technique based on instantaneous frequency estimation

    Publication Year: 1997, Page(s):284 - 292
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (936 KB)

    The authors consider the problem of motion compensation in the inverse synthetic aperture radar (ISAR) imaging technique. A novel autofocusing technique based on maximum-likelihood (ML) estimation of the focusing parameters is proposed. The likelihood function is computed by using as observed data samples of the instantaneous frequency (IF) of the received signal. A statistical analysis of the IF ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Interferometric SAR phase unwrapping using the finite element method

    Publication Year: 1997, Page(s):266 - 274
    Cited by:  Papers (14)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1244 KB)

    The authors present a new two-dimensional algorithm for interferometric synthetic aperture radar phase unwrapping based on the finite element method. The proposed technique allows an efficient least-squares solution carried out in the time domain. Weighting functions can be introduced without increasing the computational requirements. The possibility to speed up the computations via a multigrid te... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

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.

Full Aims & Scope