Closed loop doppler tracking and compensation for non-stationary underwater platforms

B. S. Sharif; J. Neasham; O. R. Hinton; A. E. Adams; J. Davies

doi:10.1109/OCEANS.2000.881287

Closed loop doppler tracking and compensation for non-stationary underwater platforms

B. S. Sharif, J. Neasham, O. R. Hinton, A. E. Adams, J. Davies

Electrical Engineering

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

A new Doppler estimation and compensation scheme is presented to enable robust communications between non-stationary underwater platforms such as Autonomous Underwater Vehicles (AUV). The underwater acoustic channel is affected by Doppler shift induced by vehicle movement and time varying multipath propagation. To this end, this paper proposes a Doppler tracking method that is adapted within a wideband beamforming array with Decision Feedback Equalisation. Doppler compensation is achieved by multirate sampling and linear interpolation. This approach ensures that both multipath and Doppler effects are mitigated simultaneously. Simulation and experimental results are presented to show the performance gain achieved for a range of platform velocity and acceleration levels. The proposed approach is capable of robust communications with typical bit error rates of approx. 1/1000 at vehicle speeds of approx. 2.6 m/s. The paper also compares experimental performance with an open loop Doppler block processing approach.

Original language	British English
Pages (from-to)	371-375
Number of pages	5
Journal	Oceans Conference Record (IEEE)
Volume	1
DOIs	https://doi.org/10.1109/OCEANS.2000.881287
State	Published - 2000

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title = "Closed loop doppler tracking and compensation for non-stationary underwater platforms",

abstract = "A new Doppler estimation and compensation scheme is presented to enable robust communications between non-stationary underwater platforms such as Autonomous Underwater Vehicles (AUV). The underwater acoustic channel is affected by Doppler shift induced by vehicle movement and time varying multipath propagation. To this end, this paper proposes a Doppler tracking method that is adapted within a wideband beamforming array with Decision Feedback Equalisation. Doppler compensation is achieved by multirate sampling and linear interpolation. This approach ensures that both multipath and Doppler effects are mitigated simultaneously. Simulation and experimental results are presented to show the performance gain achieved for a range of platform velocity and acceleration levels. The proposed approach is capable of robust communications with typical bit error rates of approx. 1/1000 at vehicle speeds of approx. 2.6 m/s. The paper also compares experimental performance with an open loop Doppler block processing approach.",

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AU - Sharif, B. S.

AU - Neasham, J.

AU - Hinton, O. R.

AU - Adams, A. E.

AU - Davies, J.

PY - 2000

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AB - A new Doppler estimation and compensation scheme is presented to enable robust communications between non-stationary underwater platforms such as Autonomous Underwater Vehicles (AUV). The underwater acoustic channel is affected by Doppler shift induced by vehicle movement and time varying multipath propagation. To this end, this paper proposes a Doppler tracking method that is adapted within a wideband beamforming array with Decision Feedback Equalisation. Doppler compensation is achieved by multirate sampling and linear interpolation. This approach ensures that both multipath and Doppler effects are mitigated simultaneously. Simulation and experimental results are presented to show the performance gain achieved for a range of platform velocity and acceleration levels. The proposed approach is capable of robust communications with typical bit error rates of approx. 1/1000 at vehicle speeds of approx. 2.6 m/s. The paper also compares experimental performance with an open loop Doppler block processing approach.

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Closed loop doppler tracking and compensation for non-stationary underwater platforms

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