Maneuvering target altitude tracking in over-the-horizon radars exploiting multipath Doppler signatures

Over-the-horizon radar (OTHR) systems provide wide-area surveillance capabilities to detect and track targets far beyond the range of conventional line-of-sight radars. Because of the narrowband waveforms, OTHR systems do not achieve reliable altitude estimation. In this paper, we develop a new technique to track the instantaneous altitude of maneuvering targets by exploiting the estimated multi-component Doppler signatures. The main contribution of this paper is to apply effective non-stationary signal analysis for estimating the time-varying Doppler signature of each individual multipath, which is then applied to an extended Kalman filter to reliably track the instantaneous target altitude.

[1]  A. Moffet.  Minimum-redundancy linear arrays , 1968 .

[2]  Braham Himed,et al.  High-resolution time-frequency representations based on the local polynomial Fourier transform for over-the-horizon radars , 2012, Defense + Commercial Sensing.

[3]  Yimin D. Zhang,et al.  Time-frequency characterization of micro-multipath signals in over-the-horizon radar , 2012, 2012 IEEE Radar Conference.

[4]  Srdjan Stankovic,et al.  Local polynomial Fourier transform: A review on recent developments and applications , 2011, Signal Process..

[5]  M. Skolnik,et al.  Over-the-Horizon radar in the HF band , 1974 .

[6]  Boaz Porat,et al.  Estimation and classification of polynomial-phase signals , 1991, IEEE Trans. Inf. Theory.

[7]  Cornel Ioana,et al.  Characterization of Doppler effects in the context of over-the-horizon radar , 2010, 2010 IEEE Radar Conference.

[8]  A. A. Kolosov.  Over-the-horizon radar , 1987 .

[9]  Yimin Zhang,et al.  High resolution time-frequency distributions for maneuvering target detection in over-the-horizon radars , 2003, 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)..

[10]  Braham Himed,et al.  Direction-of-arrival estimation of nonstationary signals exploiting signal characteristics , 2012, 2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA).

[11]  Shawn Kraut,et al.  Robust altitude estimation for over-the-horizon radar using a state-space multipath fading model , 2003 .

[12]  Cornel Ioana,et al.  Time-frequency analysis of multipath doppler signatures of maneuvering targets , 2012, 2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP).

[13]  Yimin D. Zhang,et al.  High resolution time-frequency distributions for maneuvering target detection in over-the-horizon radars , 2003, 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)..

[14]  K. L. Bell,et al.  MAP-PF multi-mode tracking for over-the-horizon radar , 2012, 2012 IEEE Radar Conference.

[15]  Cornel Ioana,et al.  Time-Frequency Analysis Using Warped-Based High-Order Phase Modeling , 2005, EURASIP J. Adv. Signal Process..

[16]  D. Simon,et al.  Kalman filtering with state equality constraints , 2002 .

[17]  Anna Scaglione,et al.  Product high-order ambiguity function for multicomponent polynomial-phase signal modeling , 1998, IEEE Trans. Signal Process..