2019_programme: SUBSPACE TRACKING FOR DOMINANT MODE REJECTION BEAMFORMING

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  • Session: 25. Signal and image processing
    Organiser(s): N/A
  • Lecture: SUBSPACE TRACKING FOR DOMINANT MODE REJECTION BEAMFORMING
    Paper ID: 777
    Author(s): Gaonach Gilles, Jaegler Arnaud
    Presenter: Gaonach Gilles
    Presentation type: oral
    Abstract: Dominant mode rejection enables adaptive beamforming when the number of snapshots is limited. This situation typically occurs for the detection of transient signals in passive sonar processing. Moreover, the adaptive beamforming filter needs to be computed at a very high rate to adapt to the processed signal. This task is very demanding in terms of computation cost. However the processing only requires the first eigenvalues and eigenvectors, which may be computed recursively using subspace tracking algorithms. An implementation of a subspace tracking algorithm is here proposed. This implementation is based on previous studies and its numerical stability is tried out both on simulated and real data for dominant mode rejection beamforming. A comparison is finally made between conventional and dominant mode rejection in the context of transient detection.
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  • Corresponding author: Mr Gaonach Gilles
    Affiliation: Thales
    Country: France
    e-mail:

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