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Matched window processing for mitigating over-the-horizon radar spread Doppler clutter

Publication ,  Journal Article
Harmanci, K; Krolik, J
Published in: ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
January 1, 1999

Ionospheric motion causes spreading of surface clutter in Doppler space which fundamentally limits the detection performance of skywave HF over-the-horizon radars. This paper presents a technique which reduces the effect of so-called `coincident' spread Doppler clutter, i.e. that which results from surface scattering from within the same range resolution cell as the target. The exploits the spatial correlation of the ionospheric aberration along the geomagnetic field aligned irregularities to obtain a cross-relation between clutter in neighboring range bins. This cross relation is exploited to estimate the Doppler spreading sequence common to neighboring range bins by a technique adapted from blind multi-channel system identification. A Chebyshev Doppler window is then designed which is matched to the estimated ionospheric aberration. Simulation and real data results presented here indicate the proposed method provides as much as 10 dB improvement in side-lobe level using a 3 second coherent integration time radar waveform.

Duke Scholars

Published In

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings

DOI

ISSN

0736-7791

Publication Date

January 1, 1999

Volume

5

Start / End Page

2789 / 2792
 

Citation

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Harmanci, K., & Krolik, J. (1999). Matched window processing for mitigating over-the-horizon radar spread Doppler clutter. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 5, 2789–2792. https://doi.org/10.1109/icassp.1999.761325
Harmanci, K., and J. Krolik. “Matched window processing for mitigating over-the-horizon radar spread Doppler clutter.” ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings 5 (January 1, 1999): 2789–92. https://doi.org/10.1109/icassp.1999.761325.
Harmanci K, Krolik J. Matched window processing for mitigating over-the-horizon radar spread Doppler clutter. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. 1999 Jan 1;5:2789–92.
Harmanci, K., and J. Krolik. “Matched window processing for mitigating over-the-horizon radar spread Doppler clutter.” ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, vol. 5, Jan. 1999, pp. 2789–92. Scopus, doi:10.1109/icassp.1999.761325.
Harmanci K, Krolik J. Matched window processing for mitigating over-the-horizon radar spread Doppler clutter. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. 1999 Jan 1;5:2789–2792.

Published In

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings

DOI

ISSN

0736-7791

Publication Date

January 1, 1999

Volume

5

Start / End Page

2789 / 2792