• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Phase-aberration correction using signals from point reflectors and diffuse scatterers: basic principles
【24h】

Phase-aberration correction using signals from point reflectors and diffuse scatterers: basic principles

机译：使用点反射器和漫散射体的信号进行相差校正：基本原理

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Methods for correction of phase aberrations induced by near-field variations in the index of refraction are explored. Using signals obtained from a sampled aperture (i.e. transducer array), phase aberrations can be accurately measured with a correlation approach similar to methods used in adaptive optics and radar. However, the method presented here has no need for a beacon or an ideal point reflector to act as a source for estimating phase errors. It uses signals from random collections of scatterers to determine phase aberrations accurately. Because there is no longer a need for a beacon signal, the method is directly applicable not only to medical ultrasound imaging but also to any coherent imaging system with a sampled aperture, such as radar and sonar.
机译：探索了用于校正由近场折射率变化引起的相差的方法。使用从采样孔径（即换能器阵列）获得的信号，可以使用与自适应光学和雷达中使用的方法类似的相关方法来准确地测量相差。但是，此处介绍的方法不需要信标或理想的点反射器即可充当估计相位误差的源。它使用来自随机散射体集合的信号来准确确定相位像差。因为不再需要信标信号，所以该方法不仅直接适用于医学超声成像，而且还适用于任何具有采样孔径的相干成像系统，例如雷达和声纳。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号