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一种新的LFM信号参数估计算法 被引量：14

A New Algorithm for Parameter Estimation of LFM Signals
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摘要 针对线性调频信号的参数估计问题,提出了一种新的算法。该算法利用计算信号的二次相位函数,得到其能量分布集中于信号的调频率曲线上的结论,因此通过谱峰检测可以获得信号的调频率估计,进而通过解调频技术得到初始频率的估计。分析了该算法的统计特性,计算机仿真结果表明算法计算量小,性能优良,在信噪比较高时,估计精度可接近CRLB界。 A new algorithm for parameter estimation of LFM signals is presented in this paper. By computing the quadratic phase （QP） function of the signal, it is shown that the QP function is concentrated along the frequency rate law of the signal. So the peak of the QP function yields the estimates of the frequency rate, and the initial frequency is obtained by the dechirp technique. The statistical character is analyzed ,and the simulation shows the proposed method has a low computational cost and high performance close to CRLB.
作者 王勇 姜义成
机构地区 哈尔滨工业大学电子工程技术研究所
出处 《信号处理》 CSCD 北大核心 2008年第1期132-134,共3页 Journal of Signal Processing
关键词 线性调频信号 二次相位函数 调频率 初始频率 统计特性 LFM signal QP function frequency rate initial frequency statistical character
分类号 TN911.7 [电子电信—通信与信息系统] TN958 [电子电信—信号与信息处理]
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参考文献9

  • 1T Abatzoglou. Fast maximum hkelihood joint estimation of frequency and frequency rate [ J ]. IEEE Trans on AES, 1986,22(6) :708-715.
  • 2R M Liang, K S Arun. Parameter estimation for superimposed chirp signals [ J ]. ASSP, 1992,5 : 273-276.
  • 3I Raveh, D Mendlovic. New properties of the Radon transform of the cross wigner/ambiguity distribution function [ J ]. IEEE Trans on Signal Processing, 1999,47 (7) :2077- 2080.
  • 4Barbarossa. S. Analysis of muhicomponent LFM signals by a combined Wigner-Hough transform. IEEE Trans on Signal Processing, 1995,43 (6) : 1511-1515.
  • 5M S Wang, A K Chan, C K Chui. Linear frequency modulated signal detecting using radon-ambiguity transform [ J ]. IEEE Trans on Signal Processing, 1998,46(3) :571-586.
  • 6齐林,陶然,周思永,王越.基于分数阶Fourier变换的多分量LFM信号的检测和参数估计[J].中国科学（E辑）,2003,33(8):749-759. 被引量：175
  • 7Peter O' shea. A new technique for instantaneous frequency rate estimation. IEEE Signal Processing Letters, 2002,9 (8) :251-252.
  • 8Peleg S, Porat B. The Cramer-Rao lower bounds for signals with constant amplitude and polynomial phase. IEEE Trans on Signal Processing, 1991,39 (5) :749-752.
  • 9Ristic B ,Boashash B. Comments on"The Cramer-Rao lower bounds for signals with constant amplitude and polynomial phase". IEEE Trans on Signal Processing, 1998,46 (6) : 1708-1709.

二级参考文献21

  • 1Boashash B. Estimating and interpreting the instantaneous frequency of a signal. Proc IEEE, 1992, 80(4): 519-569.
  • 2Diuric P M. Kay S M. Parameter estimation of china signal. IEEE Trans on ASSP, 1990, 38(12): 2118-2126.
  • 3Barbarossa S, Petrone V. Analysis of polynomial-phase signals by the integrated generalized ambiguity function. IEEE Trans on SP, 1997, 45(2): 316-327.
  • 4Abatzoglou T J. Fast maximum likelihood joint estimation of frequency and frequency rate. IEEE Trans on AES, 1986, 22(6):708-715.
  • 5Peleg S, Porat B. Linear FM signal parameter estimation from discrete-time observations. IEEE Trans on AES, 1991, 27(4):607-615.
  • 6Haimovich A M, Peckham C, Teti J G, et al. SAR imagery of moving targets: Application of time-frequency distributions for estimating motion parameters. In: Proc 1994 SPIE's International Symposium on Aerospace and Sensing, 1994. 2238:238-247.
  • 7Rao P, Taylor F J. Estimation of instantaneous frequency using the discrete wigner distribution. Electronics Letters, 1990,26(4): 246-248.
  • 8Choi H, Williams W J. Improved time-frequency representation of multicomponent signals using exponential kernels. IEEE Trans on SP, 1988, 37(6): 862-871.
  • 9Barbarossa S. Analysis of multicomponent LFM signals by a combined Wigner-Hough transform. IEEE Trans On SP, 1995,43(6): 1511-1515.
  • 10Namias V. The fractional Fourier transform and its application in quantum mechanics. J Inst Appl Math, 1980, 25:241-265.

共引文献174

同被引文献120

引证文献14

二级引证文献48

信号处理
2008年 第1期

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