IEICE TRANSACTIONS on Fundamentals
OTHR Impulsive Interference Suppression in Strong Clutter Background
Summary :
External interferences can severely degrade the performance of an Over-the-horizon radar (OTHR), so suppression of external interferences in strong clutter environment is the prerequisite for the target detection. The traditional suppression solutions usually began with clutter suppression in either time or frequency domain, followed by the interference detection and suppression. Based on this traditional solution, this paper proposes a method characterized by joint clutter suppression and interference detection: by analyzing eigenvalues in a short-time moving window centered at different time position, clutter is suppressed by discarding the maximum three eigenvalues at every time position and meanwhile detection is achieved by analyzing the remained eigenvalues at different position. Then, restoration is achieved by forward-backward linear prediction using interference-free data surrounding the interference position. In the numeric computation, the eigenvalue decomposition (EVD) is replaced by singular values decomposition (SVD) based on the equivalence of these two processing. Data processing and experimental results show its efficiency of noise floor falling down about 10-20 dB.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E92-A No.11 pp.2866-2873
- Publication Date
- 2009/11/01
- Publicized
- Online ISSN
- 1745-1337
- DOI
- 10.1587/transfun.E92.A.2866
- Type of Manuscript
- PAPER
- Category
- Digital Signal Processing
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Keyword
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Tao LIU, Yu GONG, Yaohuan GONG, "OTHR Impulsive Interference Suppression in Strong Clutter Background" in IEICE TRANSACTIONS on Fundamentals,
vol. E92-A, no. 11, pp. 2866-2873, November 2009, doi: 10.1587/transfun.E92.A.2866.
Abstract: External interferences can severely degrade the performance of an Over-the-horizon radar (OTHR), so suppression of external interferences in strong clutter environment is the prerequisite for the target detection. The traditional suppression solutions usually began with clutter suppression in either time or frequency domain, followed by the interference detection and suppression. Based on this traditional solution, this paper proposes a method characterized by joint clutter suppression and interference detection: by analyzing eigenvalues in a short-time moving window centered at different time position, clutter is suppressed by discarding the maximum three eigenvalues at every time position and meanwhile detection is achieved by analyzing the remained eigenvalues at different position. Then, restoration is achieved by forward-backward linear prediction using interference-free data surrounding the interference position. In the numeric computation, the eigenvalue decomposition (EVD) is replaced by singular values decomposition (SVD) based on the equivalence of these two processing. Data processing and experimental results show its efficiency of noise floor falling down about 10-20 dB.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E92.A.2866/_p
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@ARTICLE{e92-a_11_2866,
author={Tao LIU, Yu GONG, Yaohuan GONG, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={OTHR Impulsive Interference Suppression in Strong Clutter Background},
year={2009},
volume={E92-A},
number={11},
pages={2866-2873},
abstract={External interferences can severely degrade the performance of an Over-the-horizon radar (OTHR), so suppression of external interferences in strong clutter environment is the prerequisite for the target detection. The traditional suppression solutions usually began with clutter suppression in either time or frequency domain, followed by the interference detection and suppression. Based on this traditional solution, this paper proposes a method characterized by joint clutter suppression and interference detection: by analyzing eigenvalues in a short-time moving window centered at different time position, clutter is suppressed by discarding the maximum three eigenvalues at every time position and meanwhile detection is achieved by analyzing the remained eigenvalues at different position. Then, restoration is achieved by forward-backward linear prediction using interference-free data surrounding the interference position. In the numeric computation, the eigenvalue decomposition (EVD) is replaced by singular values decomposition (SVD) based on the equivalence of these two processing. Data processing and experimental results show its efficiency of noise floor falling down about 10-20 dB.},
keywords={},
doi={10.1587/transfun.E92.A.2866},
ISSN={1745-1337},
month={November},}
Copy
TY - JOUR
TI - OTHR Impulsive Interference Suppression in Strong Clutter Background
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2866
EP - 2873
AU - Tao LIU
AU - Yu GONG
AU - Yaohuan GONG
PY - 2009
DO - 10.1587/transfun.E92.A.2866
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E92-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 2009
AB - External interferences can severely degrade the performance of an Over-the-horizon radar (OTHR), so suppression of external interferences in strong clutter environment is the prerequisite for the target detection. The traditional suppression solutions usually began with clutter suppression in either time or frequency domain, followed by the interference detection and suppression. Based on this traditional solution, this paper proposes a method characterized by joint clutter suppression and interference detection: by analyzing eigenvalues in a short-time moving window centered at different time position, clutter is suppressed by discarding the maximum three eigenvalues at every time position and meanwhile detection is achieved by analyzing the remained eigenvalues at different position. Then, restoration is achieved by forward-backward linear prediction using interference-free data surrounding the interference position. In the numeric computation, the eigenvalue decomposition (EVD) is replaced by singular values decomposition (SVD) based on the equivalence of these two processing. Data processing and experimental results show its efficiency of noise floor falling down about 10-20 dB.
ER -
English
