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Cumulant-Based Coherent Signal Subspace Method for Bearing and Range Estimation

Abstract

A new method for simultaneous range and bearing estimation for buried objects in the presence of an unknown Gaussian noise is proposed. This method uses the MUSIC algorithm with noise subspace estimated by using the slice fourth-order cumulant matrix of the received data. The higher-order statistics aim at the removal of the additive unknown Gaussian noise. The bilinear focusing operator is used to decorrelate the received signals and to estimate the coherent signal subspace. A new source steering vector is proposed including the acoustic scattering model at each sensor. Range and bearing of the objects at each sensor are expressed as a function of those at the first sensor. This leads to the improvement of object localization anywhere, in the near-field or in the far-field zone of the sensor array. Finally, the performances of the proposed method are validated on data recorded during experiments in a water tank.

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Correspondence to Zineb Saidi.

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Saidi, Z., Bourennane, S. Cumulant-Based Coherent Signal Subspace Method for Bearing and Range Estimation. EURASIP J. Adv. Signal Process. 2007, 084576 (2006). https://doi.org/10.1155/2007/84576

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Keywords

  • Information Technology
  • Receive Signal
  • Quantum Information
  • Water Tank
  • Sensor Array