Publication:

Closed loop Doppler tracking and compensation for non-stationary underwater platforms (2000)

Author(s): Adams AE; Hinton OR; Sharif BS; Neasham J

  • : 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 ~1/1000 at vehicle speeds of ~2.6 m/s. The paper also compares experimental performance with an open loop Doppler block processing approach. (5 References).

Notes: 1. Piscataway, NJ, USA. OCEANS 2000 MTS/IEEE Conference and Exhibition. Conference Proceedings. Providence, RI, USA. 11-14 Sept. 2000.

  • Short Title: Closed loop Doppler tracking and compensation for non-stationary underwater platforms
  • Date: 11-14 September 2000
  • Conference Name: Oceans 2000 MTS/IEEE Conference and Exhibition. Conference Proceedings
  • Volume: 1
  • Pages: 371-375
  • Publisher: Institution of Electronic and Electrical Engineers
  • Publication type: Conference Proceedings (inc. abstract)
  • Bibliographic status: Published
Staff

Professor Oliver Hinton
Faculty Pro-Vice-Chancellor for SAgE