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Conference Papers Year : 2009

Motion effect modeling in multipath configuration using warping based lag-doppler filtering

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Nicolas Josso
  • Function : Author
  • PersonId : 856823
Cornel Ioana
Cedric Gervaise
  • Function : Author
  • PersonId : 928772
Jerome I. Mars

Abstract

The estimation of the impulse response (IR) of a propagation channel is necessary for a large number of acoustic applications: underwater communication, detection and localization, etc. Basically, it informs us about the distortions of a transmitted signal in one channel. This operation is usually subject to additional distortions due to the motion of the transmitter-channel receiver configuration. This paper points on the effects of the motion while estimating the IR by matching filtering between the transmitted and the received signals and introduces a new motion compensation method. Knowing the transmitted signal, the "apparent" speed of each propagation path can be estimated using wideband ambiguity function [1]. Indeed, some interference appears in the wideband ambiguity plane because of the multipath propagation. A warpingbased lag-Doppler filtering method is proposed allowing us to accurately estimate the IR of the channel.
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Dates and versions

hal-00386481 , version 1 (22-05-2009)

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Nicolas Josso, Cornel Ioana, Cedric Gervaise, Yann Stéphan, Jerome I. Mars. Motion effect modeling in multipath configuration using warping based lag-doppler filtering. ICASSP 2009 - IEEE International Conference on Acoustics, Speech and Signal Processing, Apr 2009, Taipei, Taiwan. pp.2301-2304, ⟨10.1109/ICASSP.2009.4960080⟩. ⟨hal-00386481⟩
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