| 超声回波参数的高斯与牛顿迭代法计算 |
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| 引用本文： | 武良丹,贺西平,张小凤.超声回波参数的高斯与牛顿迭代法计算[J].陕西师范大学学报,2006,34(3):56-58. |
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| 作者姓名： | 武良丹 贺西平 张小凤 |
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| 作者单位： | 陕西师范大学物理学与信息技术学院 陕西西安710062 |
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| 摘 要： | 应用超声回波模型,对检测目标的超声回波进行模拟,在模拟过程中应用高斯与牛顿法迭代出估计参数.结果表明,该算法能以较少的迭代次数计算出向量参数,但对模型中到达时间初值设定较为敏感,这可用常规方法(互相关或小波变换、遗传算法等)解决.
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| 关 键 词： | 超声回波模型 高斯与牛顿迭代法 超声检测 互相关 |
| 文章编号： | 1672-4291（2006）03-0056-03 |
| 收稿时间： | 2005-10-12 |
| 修稿时间： | 2005年10月12 |
The calculation of ultrasonic echo parameter by Gauss-Newton iterative method |
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| WU Liang-dan,HE Xi-ping,ZHANG Xiao-feng.The calculation of ultrasonic echo parameter by Gauss-Newton iterative method[J].Journal of Shaanxi Normal University: Nat Sci Ed,2006,34(3):56-58. |
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| Authors: | WU Liang-dan HE Xi-ping ZHANG Xiao-feng |
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| Abstract: | The ultrasonic echo model is applied to simulate the ultrasonic echo of detection object and the Gauss-Newton iterative method is applied in the simulation process to estimate the parameters.The result shows that the algorithm can calculate the vector parameter with few iterative times.The convergence of the algorithm is sensitive to the initial value of arrival time can be solved by some conventional methods,such as cross-correlation,wavelet transform and genetic algorithms. |
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| Keywords: | ultrasonic echo model Gauss-Newton iterative method ultrasonic testing cross-correlation |
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