Studies on the Improvement of Resolution on the Ultrasonic Inspection Method

超声检测方法分辨率提高的研究

• 批准号: 01550494
• 负责人: ASHIDA Yuzuru
• 金额: $ 1.41万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01550494/
• 关键词: Ultrasonic Inspection Method; Resolution; Data Processing; Geophysical Prospecting; 超音波デ-タ処理

The research for the improvement of resolution on the ultrasonic inspection method was carried out. Consequently, the following results were obtained :1. In the case of media of low absorption characteristics, not only the resolution is greatly improved, but also the imformation of polarity and phase in reflected waves is preserved thorough the wavelet processing.2. The Velocity Distribution in Media is Analyzed by CDP Stack Data.3. In the case of media of high absorption characteristics, the resolution is improved by the wavelet processing using the synthesized wavelet at arbitrary depth as the new basic wavelet including the absorption characteristics.4. When CDP stack, wavelet processing, migration and synthetic, accoustic impedance log are applied to the data from a phantom model of human body, great improvement of resolution and the interpretation for physical properties become available compared with the conventional ultrasonic inspecti on method.5. By using the vertical section along the arbitrary line direction and the display which combines the vertical section with the time slice section, the interpretation of three dimensional data volume becomes feasible.

对提高超声检测方法的分辨率进行了研究。因此，得到以下结果：1。在低吸收特性介质中，小波处理不仅大大提高了分辨率，而且保留了反射波的极性和相位信息。利用CDP堆栈数据分析介质中的速度分布。在高吸收特性介质中，采用任意深度合成的小波作为包含吸收特性的新基本小波进行小波处理，提高了分辨率。对人体模型数据进行CDP叠加、小波处理、声阻抗测井偏移和合成，与传统的超声检测方法相比，分辨率和物理性质的解释有了很大的提高。利用沿任意直线方向的垂直线以及垂直线与时间切片相结合的显示，使三维数据体的解释成为可能。

项目成果

芦田 讓: "超音波検査法における分解能の向上(1)ーウェ-ブレット処理およびCDP重合処理の効果ー" 物理探査. 41. 133-145 (1988)

Yu Ashida：“超声检测中分辨率的提高（1）-小波处理和CDP聚合处理的影响-”物理探索。41。133-145（1988）。

Yuzuru ASHIDA: "The Improvement of Resolution on the Ultrasonic Inspection Method (2) - The Wavelet Processing including the Absorption Charateristics in Media -" Butsuri-Tansa. Vol. 41, No. 2. 146-157 (1988)

Yuzuru ASHIDA：“超声波检查方法分辨率的提高（2）-包括介质吸收特性的小波处理-”Butsuri-Tansa。

Yuzuru ASHIDA: "The Improvement of Resolution on the Ultrasonic Inspection Method (3) - The Experiment using a Phantom Model -" Butsuri-Tansa. Vol. 41, No. 2. 158-170 (1988)

Yuzuru ASHIDA：“超声波检查方法分辨率的提高（3）-使用模型模型的实验-”Butsuri-Tansa。

芦田譲,大川史郎,梅戸在明: "超音波検査法における分解能の向上(3)-擬似生体による実験-" 物理探査. 41. 158-170 (1988)

Yuzuru Ashida、Shiro Okawa、Ariaki Umedo：“超声波检测分辨率的提高 (3) - 使用模拟生物体的实验 -” 物理探索。 41. 158-170 (1988)

Yuzuru ASHIDA: "The Improvement of Resolution on the Ultrasonic Inspection Method" memoirs of the Faculty of Engineering Kyoto University. 50. 37-81 (1988)

Yuzuru ASHIDA：《超声波检查方法分辨率的改进》京都大学工学部回忆录。