Speckle reduction in multiple scale chirp signal using wavelet transform

被引：0

作者：

Bhattacharya, C ^{[1
]}

Roy, J ^{[1
]}

Kar, A ^{[1
]}

机构：

[1] DEAL, DRDO, Dehra Dun, India

来源：

IGARSS 2003: IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS I - VII, PROCEEDINGS: LEARNING FROM EARTH'S SHAPES AND SIZES | 2003年

关键词：

D O I：

暂无

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Speckle modeling is ideal in SAR signal domain. Traditional techniques of speckle reduction are in SAR image domain where speckle modeling is actually approximation of Gaussian process. In this paper, we exploit the nice property of wavelet domain separation of signal and noise components in multiple scales for chirp signal. A novel denoising scheme based on the norm of difference of coefficient vectors in transform domain is proposed to reduce the effect of speckle before coherent integration in the SAR matched filter.

引用

页码：1666 / 1668

页数：3

共 50 条

[21] A comparative study on SAR images speckle reduction in a wavelet transform framework
Houam, L
Smara, Y
GEOINFORMATION FOR EUROPEAN-WIDE INTEGRATION, 2003, : 99 - 106
[22] Speckle Noise Reduction of Optical Coherence Tomography Images with a Wavelet Transform
Murakami, Tsuyoshi
Ogawa, Koichi
2018 IEEE 14TH INTERNATIONAL COLLOQUIUM ON SIGNAL PROCESSING & ITS APPLICATIONS (CSPA 2018), 2018, : 31 - 34
[23] Blind spot reduction in wavelet transform-based time-frequency domain reflectometry using Gaussian chirp as mother wavelet
Lee, Sin Ho
Park, Jin Bae
Choi, Yoon Ho
IET SIGNAL PROCESSING, 2014, 8 (07) : 703 - 709
[24] Chirp signal correlation in the wavelet domain
Schwarz, G
Datcu, M
IGARSS '98 - 1998 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, PROCEEDINGS VOLS 1-5: SENSING AND MANAGING THE ENVIRONMENT, 1998, : 2646 - 2649
[25] Speckle restraint of satellite SAR image using wavelet transform
Hu, Z.L.
Guo, D.Z.
Sheng, Y.H.
Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining & Technology, 2001, 30 (03): : 229 - 232
[26] Channel Estimation Using a Chirp Signal and the Fractional Fourier Transform
Sud, Seema
2020 IEEE 3RD 5G WORLD FORUM (5GWF), 2020, : 502 - 507
[27] SIGNAL COMPRESSION USING THE DISCRETE LINEAR CHIRP TRANSFORM (DLCT)
Alkishriwo, Osama A.
Chaparro, Luis F.
2012 PROCEEDINGS OF THE 20TH EUROPEAN SIGNAL PROCESSING CONFERENCE (EUSIPCO), 2012, : 2128 - 2132
[28] ECG signal denoising using Wavelet transform
Sridevi, M.
Madhavsarma, P.
RESEARCH JOURNAL OF PHARMACEUTICAL BIOLOGICAL AND CHEMICAL SCIENCES, 2018, 9 (01): : 217 - 225
[29] Nonstationary signal enhancement using the Wavelet Transform
Venkatachalam, V
Aravena, JL
PROCEEDINGS OF THE TWENTY-EIGHTH SOUTHEASTERN SYMPOSIUM ON SYSTEM THEORY, 1996, : 98 - 102
[30] ERG signal analysis using wavelet transform
R. Barraco
D. Persano Adorno
M. Brai
Theory in Biosciences, 2011, 130 : 155 - 163

← 1 2 3 4 5 →