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广西师范大学学报(自然科学版) ›› 2016, Vol. 34 ›› Issue (4): 26-31.doi: 10.16088/j.issn.1001-6600.2016.04.004
• 广西高校优秀中青年骨干教师培养工程论坛 • 上一篇 下一篇
马伏花,卢振坤
MA Fuhua, LU Zhenkun
摘要: 模糊函数是一种超声检测系统性能分析的重要工具。文中首先给出超声信号高斯模型,接着推导该模型的模糊函数,最后讨论分析与探测距离和移动目标速度相关的超声检测系统的时间和频率分辨率,并给出了相关超声检测系统参数选择的参考。理论推导和仿真结果表明:辨别运动着的目标,用长持续时间的信号,即窄带宽;辨别近距离的目标,用短持续时间的信号,即宽带宽。
中图分类号:
[1] HEIN A, O’BRIEN W D. Current time-domain methods for assessing tissue motion by analysis from reflected ultrasound echoes[J]. IEEE Trans Ultrason, Ferroelect, Freq Contr, 1993,40(2):84-102. [2] CHEN E J, JENKINS W K, O’BRIEN W D. The impact of various imaging parameters on ultrasonic displacement and velocity estimates[J]. IEEE Trans Ultrason, Ferroelect, Freq Contr, 1994, 41(3):293-301. [3] 郭纲,王树勋,孙晓颖,等.超声信号的双指数模型及参数确定方法[J].电子学报, 2009, 37(7):1501-1504. [4] DEMIRLI R, SANIIE J. Model-based estimation of ultrasonic echoes Part I:analysis and algorithms[J]. IEEE Trans Ultrason, Ferroelect, Freq Contr, 2001, 48(3):787-802. [5] BARSHAN B, AYRULU B. Performance comparison of four time of flight estimation methods for sonar signals[J]. IEEE Electronics Letters, 1999, 34(16):1616-1617. [6] YUFENG L, DEMIRLI R, CARDOSO G, et al. A successive parameter estimation algorithm for chirplet signal decomposition[J]. IEEE Trans Ultrason, Ferroelect, Freq Contr, 2006, 53(11):2121-2131. [7] HOSEINI M R, XIAODONG W, ZUO M J. Estimating ultrasonic time of flight using envelope and quasi maximum likelihood method for damage detection and assessment[J]. Measurement, 2012, 45(8) :2072-2080. [8] ZHENKUN L, CUI Y, GANG W. Optimal transform order of fractional fourier transform for decomposition of overlapping ultrasonic signals[J]. IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2014, E97-A(1):393-396. [9] MECKLENBRAUKER W, HLAWATSCH F. The wigner distribution:theory and applications in signal processing[M]. Amsterdam:Elsevier, 1997:59-133. [10] AUSLANDER L, TOLIMIERI R. Characterizing the radar ambiguity functions[J]. IEEE Trans Inf Theory, 1984, 30(6):832-836. [11] GOGINENI S, RANGASWAMY M, RIGLING B D, et al. Ambiguity function analysis for UMTS-based passive multistatic radar[J]. IEEE Trans Signal Process, 2014, 62(11):2945-2957. [12] 刘领容,王凌,姚远程,等.复合线性调频信号的模糊函数分析[J].西安理工大学学报,2011,27(4):481-485. [13] 张容权,黄钰林,杨建宇.双基地线性FMCW雷达信号模糊函数及分辨特性[J].电子与信息学报,2007,29(4):836-840. [14] HUSSAIN M G M. Ambiguity functions for monostatic and bistatic radar systems using UWB throb signal[J]. IEEE Transactions on Aerospace and Electronic Systems, 2011, 47(3):1710-1722. [15] ZHENKUN L, CUI Y, DONGHONG Q, et al,Estimating the parameters of ultrasonic echo signal in the gabor transform domain and its resolution analysis[J]. Signal Processing, 2016, 120:607-619. [16] ZHENKUN L, CUI Y, GANG W. Hilbert transform based time-of-flight estimation of multi-echo ultrasonic signals and its resolution analysis[J]. IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2014, E97-A(9):1962-1965. |
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