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回波到達(dá)時(shí)間精確估測(cè)的多尺度方法

譚營(yíng),  鄧超

譚營(yíng), 鄧超. 回波到達(dá)時(shí)間精確估測(cè)的多尺度方法[J]. 電子與信息學(xué)報(bào), 1998, 20(3): 308-314.
引用本文: 譚營(yíng), 鄧超. 回波到達(dá)時(shí)間精確估測(cè)的多尺度方法[J]. 電子與信息學(xué)報(bào), 1998, 20(3): 308-314.
Tan Ying, Deng Chao. MULTISCALE METHOD FOR PRECISE ESTIMATION OF TOA OF RADAR RETURN[J]. Journal of Electronics & Information Technology, 1998, 20(3): 308-314.
Citation: Tan Ying, Deng Chao. MULTISCALE METHOD FOR PRECISE ESTIMATION OF TOA OF RADAR RETURN[J]. Journal of Electronics & Information Technology, 1998, 20(3): 308-314.

回波到達(dá)時(shí)間精確估測(cè)的多尺度方法

MULTISCALE METHOD FOR PRECISE ESTIMATION OF TOA OF RADAR RETURN

  • 摘要: 本文提出了一種雷達(dá)回波到達(dá)時(shí)間精確估測(cè)的多尺度方法。通過(guò)在不同尺度上對(duì)回波特性進(jìn)行綜合分析,該方法不僅能剔除多徑干擾,正確檢測(cè)雷達(dá)回波,精確測(cè)量其波達(dá)時(shí)刻,同時(shí)還具有很強(qiáng)的抑制噪聲的能力。由于該方法只需對(duì)接收信號(hào)計(jì)算三尺度的小波變換和對(duì)所檢測(cè)到的候選波作兩尺度小波變換且能采用Mallat算法,故其計(jì)算效率很高。實(shí)驗(yàn)結(jié)果驗(yàn)證了本文方法的有效性。
    Abstract: A multiscale analysis method for precisely estimating the time of arrival (TOA) of radar return is proposed in this paper. Through synthetically analyzing the characteristics of echoes in different scales, our method not only can detect the radar return and measure its TOA precisely but also can cancel the multipath interferences correctly and reject noise strongly. Only a three-scale wavelet transform (WT) is needed for every receiving signal and a two-scale WT is performed on each candidate radar returns in this method. Our algorithm is more computationally efficient by using the famous Mallat algorithm. The experimental results in this paper have verified the effectiveness of our method.
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  • Mallat S. A theory for multiresolution signal decomposition: The wavelet representation. IEEE[2]Trans. on Patt. Anal. Machine Intell. 1989, 11(7): 674-694.[3]Meyer Y. Ondelettes et Operateurs. New York: Hermann, 1990.[4]Daubechies I. Ten Lectures on Wavelets. CBMS-NSF Series Appl. Math.,SIAM, 1991.[5]Rattarangsi A, Chin R T. Scale-based detection of corners of planar curves[J].IEEE Trans. on Patt. Anal. Machine Intell.1992, 14(3):430-448[6]Mallat S, Zhong S. Characterization of signals from multiscale edges[J].IEEE Trans. on Patt. Anal. Machine Intell.1992, 14(7):710-732[7]Meer P, Baugher E S, Rosenfeld A. Extraction of trend lines and extrema from multiscale curves, Patt[J].Recogn.1988, 21(3):217-226[8]Mallat S G, Hwang W L. Singularity detection and processing with IEEE Trans[J].on Information Theory.1992, 38(2):617-634
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出版歷程
  • 收稿日期:  1996-12-23
  • 修回日期:  1997-08-01
  • 刊出日期:  1998-05-19

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