Radar target signals and chaff cloud
jamming signals have different characters by the wavelet transform.
The wavelet coefficients of radar target signals are highly
correlated with its near-and-near-scale wavelet coefficients,
however the correlativity between the wavelet coefficients of chaff
cloud jamming signals and its near-and-near scale wavelet
coefficients is less significant. Based on the binary-base discrete
wavelet transform and the correlation algorithm, the method of
target entropy to estimate standard variance of the jamming signals
and each scale is proposed to ensure reasonable threshold, to
suppress chaff cloud signals and finally to reconstruct mixed
signals by the improved spatially selective noise filtration (ISSNF)
method. The extensive simulation results show that the proposed
method can availably suppress chaff cloud jamming and decontaminate
target echo.
ZHAO Hai-bo (赵海波), PEI Jin-ze (裴晋泽), ZHAO Lei-ming (赵雷鸣), HU Guang-rui (胡光锐)
. Chaff Cloud Jamming Suppression Based on Wavelet Transform[J]. Journal of Shanghai Jiaotong University(Science), 2011
, 16(6)
: 704
-707
.
DOI: 10.1007/s12204-011-1214-4
[1] Guo Y, Uberall H. Bistatic radar scattering by a chaff cloud [J]. IEEE Transactions on Antennas and Propagation ,
1992, 40 (7): 837-841.
[2] Macedo A D F. Analysis of chaff cloud RCS applying fuzzy calculus [C] //
Proceedings of Microwave and Optoelectronics Conference.
Natal, Brazil: IEEE, 1997: 724-728.
[3] Marcus S W. Dynamics and radar cross section density of chaff clouds [J].
IEEE Transactions on Aerospace and Electronic Systems, 2004,
40 (1): 93-102.
[4] Feng You-qian, Zhang Shan-wen, Song Guo-xiang. A method for recognition
of radar targets under chaff jamming based on the wavelet [J].
Journal of Xidian University, 2003, 30 (3): 345-348 (in
Chinese).
[5] Li Wei-min, Shi Zhi-guang, Fu Qiang. Modeling and simulation of
signature of shiptargets [J]. Journal of System Simulation ,
2005, 17 (9): 2047-2050 (in Chinese ).
[6] Lutsenko V I, Homenko S I, Roenko A N. Backscattering spectral and
polarization features of the surface targets in centimeter and
millimeter waves ranges [C] // The Fourth International
Kharkov Symposium on Physics and Engineering of Millimeter and
Sub-Millimeter Waves. Kharkov, Ukraine: IEEE, 2001: 405-407.
[7] Cloude S R, Pottier E. A review of target decomposition theorems in
radar ploarimetry [J]. IEEE Transactions on Geoscience and
Remote Sensing, 1996, 34 (2): 498-518.
[8] Sun Yan-kui. Wavelet analysis and its application [M]. Beijing: China
Machine Press, 2005 (in Chinese).
