Nonbiased Geometric Centroid For High-Resolution Radar Angle Tracking

    Authors

    Y. A. Alsaka; L. A. Young;M. Hamid

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Keywords

    Geometric Centroid; Radar Angle Tracking; Algorithm; Telecommunications

    Abstract

    An efficient algorithm is presented for tracking the true and nonbiased geometric centre of an array of scatterers on a single target. This algorithm is specifically designed for the monopulse radar angle tracking system with stepped frequency pulse train. The crosscorrelation function of the sum and difference channels normalised by the autocorrelation of the sum channel is used to calculate the geometric centre of each uniquely separated pair of scatterers. Dividing by the autocorrelation function eliminates the effects of different targets radar cross-sections (RCS), however, the zero separation term of the error function (DC term) is still biased toward the bigger scatterer. The nonzero terms (AC terms) are the down range distance separations between scatterers and are independent of their RCS. By simply dropping the zero separation term, and averaging the remaining terms together, the aim-point becomes the unbiased geometric centre of the array.

    Journal Title

    Iee Proceedings-F Radar and Signal Processing

    Volume

    140

    Issue/Number

    5

    Publication Date

    1-1-1993

    Document Type

    Article

    Language

    English

    First Page

    297

    Last Page

    302

    WOS Identifier

    WOS:A1993MG21500004

    ISSN

    0956-375X

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