Algorithm for Steering Vector Estimation Using Second Order Moments

  • Authors:

  • Anthony J. Weiss;Benjamin Friedlander

  • Affiliations:

  • -;-

  • Venue:
  • ASILOMAR '95 Proceedings of the 29th Asilomar Conference on Signals, Systems and Computers (2-Volume Set)
  • Year:
  • 1995

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Abstract

We consider the problem of estimating the steering vectors of an uncalibrated array. The array elements are assumed to have the same unknown gain pattern, up to an unknown multiplicative factor. The phases of the elements are arbitrary and unknown. The signals are assumed to be uncorrelated. We identify a cost function whose minimizer is a statistically consistent estimate of the unknown parameters. Next, we present an iterative algorithm for finding the minimum of that cost function. The proposed algorithm is guaranteed to converge to a stationary point. The algorithm performance is compared with the Cramer Rao bound.