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公开(公告)号：US07074186B2
公开(公告)日：2006-07-11
申请号：US10668915
申请日：2003-09-23
CPC分类号： G01S15/895 , G01S7/52026 , G01S7/52046
摘要： Transmit based axial whitening is provided. Ultrasonic waveforms to be transmitted are designed to provide for wideband imaging characteristics prior to detection. Rather than transmitting a waveform having a spectral magnitude as white or flat as possible, waveforms with adjusted spectral content, such as spectrally bi-modal waveforms are generated in order to compensate for subsequent effects. Prior to detection, a more wideband or whiter signal response is provided in response to the transmitted waveform. Any of various alterations of the transmit waveform, such as asymmetric, spectrally bi-modal or other characteristics in anticipation of a system transfer function or physical phenomena through which the signal passes electronically or acoustically to result in a wideband or white spectral magnitude and generally linear spectral phase is used. The transmit waveform is altered to improve the imaging characteristics of the downstream processing.
摘要翻译： 提供基于发射的轴向增白。 要发射的超声波形被设计成在检测之前提供宽带成像特性。 不会发送具有尽可能白色或平坦的光谱幅度的波形，而是产生具有调整的光谱含量（诸如光谱双模态波形）的波形，以便补偿随后的效果。 在检测之前，响应于传输的波形提供更宽带或更白的信号响应。 发射波形的各种改变中的任何一种，例如在预期系统传递函数或物理现象的情况下的不对称，光谱双模式或其他特性，信号通过该物理现象通过电子或声学通过以产生宽带或白色光谱幅度并且通常为线性 使用光谱相位。 改变发射波形以改善下游处理的成像特性。
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公开(公告)号：US20050107699A1
公开(公告)日：2005-05-19
申请号：US10668915
申请日：2003-09-23
CPC分类号： G01S15/895 , G01S7/52026 , G01S7/52046
摘要： Transmit based axial whitening is provided. Ultrasonic waveforms to be transmitted are designed to provide for wideband imaging characteristics prior to detection. Rather than transmitting a waveform having a spectral magnitude as white or flat as possible, waveforms with adjusted spectral content, such as spectrally bi-modal waveforms are generated in order to compensate for subsequent effects. Prior to detection, a more wideband or whiter signal response is provided in response to the transmitted waveform. Any of various alterations of the transmit waveform, such as asymmetric, spectrally bi-modal or other characteristics in anticipation of a system transfer function or physical phenomena through which the signal passes electronically or acoustically to result in a wideband or white spectral magnitude and generally linear spectral phase is used. The transmit waveform is altered to improve the imaging characteristics of the downstream processing.
摘要翻译： 提供基于发射的轴向增白。 要发射的超声波形被设计成在检测之前提供宽带成像特性。 不会发送具有尽可能白色或平坦的光谱幅度的波形，而是产生具有调整的光谱含量（诸如光谱双模态波形）的波形，以便补偿随后的效果。 在检测之前，响应于传输的波形提供更宽带或更白的信号响应。 发射波形的各种改变中的任何一种，例如在预期系统传递函数或物理现象的情况下的不对称，光谱双模式或其他特性，信号通过该物理现象通过电子或声学通过以产生宽带或白色光谱幅度并且通常为线性 使用光谱相位。 改变发射波形以改善下游处理的成像特性。
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