TARGET: A direct AOA-TDOA estimation for blind broadband geolocalization

In this paper, a new robust and low computationally algorithm is proposed for broadband geolocalization. Recent work have demonstrated the superiority of the geolocalization in 1-step over the 2-steps algorithms. However this superiority is obtained at the price of a bandwidth slicing which is unfortunately limited for computational reasons and leads to an asymptotic bias due to the residual broadband effect. This paper we propose an alternative approach fully exploiting the total bandwidth and consequently suppressing the slicing drawbacks. The proposed method is named TARGET and exploits the rank deficiency of a temporal shift dependent covariance matrix after a multichannel synchronization. Our analysis and simulations prove the performance advantage of proposed method over recently introduced ones.

[1]  R. O. Schmidt,et al.  Multiple emitter location and signal Parameter estimation , 1986 .

[2]  Petre Stoica,et al.  Decentralized array processing using the MODE algorithm , 1995 .

[3]  Paolo Nepa,et al.  Location, Location, Location , 2008, IEEE Vehicular Technology Magazine.

[4]  Brian M. Sadler,et al.  Source localization with distributed sensor arrays and partial spatial coherence , 2004, IEEE Transactions on Signal Processing.

[5]  B. Parlett.  The Symmetric Eigenvalue Problem , 1981 .

[6]  Anthony J. Weiss,et al.  Direct Position Determination of Multiple Radio Signals , 2005, EURASIP J. Adv. Signal Process..

[7]  Ulrich Nickel,et al.  3D passive source localization by a multi-array network: Noncoherent vs. coherent processing , 2010, 2010 International ITG Workshop on Smart Antennas (WSA).

[8]  Anne Ferréol,et al.  On the broadband effect of remote stations in DPD algorithm , 2015, 2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP).

[9]  Anne Ferréol,et al.  LOST-find: A spectral-space-time direct blind geolocalization algorithm , 2015, 2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP).

[10]  Anne Ferréol,et al.  Array-broadband effects on direct geolocation algorithm , 2014, 2014 22nd European Signal Processing Conference (EUSIPCO).

[11]  E. Weinstein,et al.  Decentralization of the Gaussian maximum likelihood estimator and its applications to passive array processing , 1981 .

[12]  T. Kailath,et al.  Direction of arrival estimation by eigenstructure methods with imperfect spatial coherence of wave fronts , 1988 .

[13]  Thomas Kailath,et al.  Decentralized processing in sensor arrays , 1985, IEEE Trans. Acoust. Speech Signal Process..

[14]  Ieee Staff.  2017 25th European Signal Processing Conference (EUSIPCO) , 2017 .

[15]  Jonathan Bosse,et al.  A space time array processing for passive geolocalization of radio transmitters , 2011, 2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP).