Opportunistic Synchronisation of Multi-Static Staring Array Radars via Track-Before-Detect

K. Kim, M. Üney, B. Mulgrew

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this work, we consider the problem of synchronising separately located transmitters and a staring array receiver that also has a local transmitter. The acknowledged benefits of using separate transmitters in active sensing are often undermined by the difficulty in accurate synchronisation of the receiver and the transmitters. In this work, we propose a solution that is based on measurements from non-cooperative objects in the illuminated region. We formulate the problem as parameter estimation in a state space model with individual transmitter channel data cubes as measurements. For maximum likelihood estimation, we use an expectation maximisation type iterative bound optimisation using distributions found by track-before-detect together with explicit formulae derived here for the related score function for chirp waveforms. We demonstrate that the proposed approach is capable of achieving very high accuracy with errors on the order of small fractions of the pulse width thereby enabling coherent processing in bi-static channels.
Original languageUndefined/Unknown
Title of host publication2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages3320-3324
Number of pages5
DOIs
Publication statusPublished - 1 Apr 2018
Event2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018 - Calgary, Canada
Duration: 15 Apr 201820 Apr 2018

Conference

Conference2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018
Country/TerritoryCanada
CityCalgary
Period15/04/1820/04/18

Keywords

  • expectation-maximisation algorithm
  • optimisation
  • radar detection
  • radar tracking
  • synchronisation
  • expectation maximisation type iterative bound optimisation
  • track-before-detect
  • bi-static channels
  • multistatic staring array radars
  • maximum likelihood estimation
  • individual transmitter channel data cubes
  • state space model
  • parameter estimation
  • illuminated region
  • noncooperative objects
  • active sensing
  • separate transmitters
  • local transmitter
  • staring array receiver
  • Synchronization
  • Transmitters
  • Receivers
  • Maximum likelihood estimation
  • Radar tracking
  • Channel estimation
  • Multi-static radar
  • marginal likelihood
  • expectation maximisation

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