Skip to main content

Wavefront adaptive raymode processing for over-the-horizon HF radar clutter mitigation

Publication ,  Journal Article
Kazanci, O; Bilik, I; Krolik, J
Published in: Conference Record - Asilomar Conference on Signals, Systems and Computers
December 1, 2007

Detection of surface targets using over-the-horizon radar (OTHR) is extremely challenging due to ionospherically induced Doppler spread clutter. In particular, low Doppler targets are often masked by ground clutter arriving via multipath propagation at different elevation angles, each with a different ionospheric Doppler shift. The wavefront adaptive raymode processing (WARP) approach presented here exploits the azimuthally distributed nature of the clutter return and adaptively estimates the "crinkly" spatial wavefront arriving on each raymode by using its distinct Doppler spectral characteristics. Rather than the plane-wave beamwidth of the array aperture, the raymode resolution of WARP is limited by the wavenumber-extent-spatial-aperture (WESA) product of the clutter return. Thus it is possible to spatially separate clutter raymodes using limited array apertures. Using simulated radar data, WARP is shown to provide a signal-to-clutter-plus-noise ratio (SCNR) improvement of as much as 30 dB over conventional processing for targets buried in Doppler spread clutter. © 2007 IEEE.

Duke Scholars

Published In

Conference Record - Asilomar Conference on Signals, Systems and Computers

DOI

ISSN

1058-6393

Publication Date

December 1, 2007

Start / End Page

2191 / 2194
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Kazanci, O., Bilik, I., & Krolik, J. (2007). Wavefront adaptive raymode processing for over-the-horizon HF radar clutter mitigation. Conference Record - Asilomar Conference on Signals, Systems and Computers, 2191–2194. https://doi.org/10.1109/ACSSC.2007.4487629
Kazanci, O., I. Bilik, and J. Krolik. “Wavefront adaptive raymode processing for over-the-horizon HF radar clutter mitigation.” Conference Record - Asilomar Conference on Signals, Systems and Computers, December 1, 2007, 2191–94. https://doi.org/10.1109/ACSSC.2007.4487629.
Kazanci O, Bilik I, Krolik J. Wavefront adaptive raymode processing for over-the-horizon HF radar clutter mitigation. Conference Record - Asilomar Conference on Signals, Systems and Computers. 2007 Dec 1;2191–4.
Kazanci, O., et al. “Wavefront adaptive raymode processing for over-the-horizon HF radar clutter mitigation.” Conference Record - Asilomar Conference on Signals, Systems and Computers, Dec. 2007, pp. 2191–94. Scopus, doi:10.1109/ACSSC.2007.4487629.
Kazanci O, Bilik I, Krolik J. Wavefront adaptive raymode processing for over-the-horizon HF radar clutter mitigation. Conference Record - Asilomar Conference on Signals, Systems and Computers. 2007 Dec 1;2191–2194.

Published In

Conference Record - Asilomar Conference on Signals, Systems and Computers

DOI

ISSN

1058-6393

Publication Date

December 1, 2007

Start / End Page

2191 / 2194