Noise adaptive sonar signal processor
    2.
    发明申请
    Noise adaptive sonar signal processor 失效
    噪声自适应声纳信号处理器

    公开(公告)号:US20060140054A1

    公开(公告)日:2006-06-29

    申请号:US10559623

    申请日:2004-06-08

    IPC分类号: G01S15/02

    CPC分类号: G01S7/527

    摘要: A system and method of performing sonar range estimations in a noisy sonar environment. The system includes a sensor, a transmitter, a receiver, a plurality of band-pass filters, a cross correlator, and a data analyzer. The transmitter transmits a pulse through a transmission medium. The pulse travels through the transmission medium until it strikes an object, which returns an echo to the sensor. The sensor provides the echo to the receiver, which provides an indication of the echo to the band-pass filters. The respective band-pass filters provide filtered versions of the echo and pulse to the cross correlator, which performs multiple cross correlation operations on the filtered echo and pulse. The cross correlator provides output data to the data analyzer, which uses the data to estimate the SNR in the environment and to determine a pulse center frequency corresponding to the estimated SNR. By controlling the center frequency of pulses emitted by the transmitter based on information provided by the data analyzer, the system obtains sonar range estimations with increased accuracy.

    摘要翻译: 在噪声声纳环境中执行声纳范围估计的系统和方法。 该系统包括传感器,发射器,接收器,多个带通滤波器,互相关器和数据分析器。 发射机通过传输介质发送脉冲。 脉冲通过传输介质,直到其撞击物体,这将返回到传感器。 传感器向接收器提供回波,其提供带通滤波器的回波的指示。 相应的带通滤波器向互相关器提供回波和脉冲的滤波版本,其对滤波的回波和脉冲执行多个互相关操作。 交叉相关器向数据分析器提供输出数据,数据分析器使用数据来估计环境中的SNR,并确定与估计的SNR相对应的脉冲中心频率。 通过根据数据分析仪提供的信息控制发射机发出的脉冲的中心频率,系统以更高的精度获得声纳范围估计。

    Estimation of background noise and its effect on sonar range estimation
    3.
    发明申请
    Estimation of background noise and its effect on sonar range estimation 失效
    背景噪声的估计及其对声纳范围估计的影响

    公开(公告)号:US20060126434A1

    公开(公告)日:2006-06-15

    申请号:US10559741

    申请日:2004-06-08

    申请人: Nathan Intrator

    发明人: Nathan Intrator

    IPC分类号: H04B1/06

    CPC分类号: G01S7/52004 G01S15/10

    摘要: A system (100) and method for estimating the signal-to-noise ratio (SNR) in a sonar environment and for determining the effect of the estimated SNR on sonar ranging accuracy. The system includes a sensor (102), a transmitter (103), a receiver (104), a plurality of band-pass filters (106), a cross correlator (108), and a data analyzer (110). The transmitter (103) transmits a pulse through a transmission medium. The sensor (102) senses an echo returning from a selected target (112), and provides a signal representing the echo to the receiver (104), which in turn provides an indication of the echo to the band-pass filters (106). The filters (106) provide filtered versions of the echo and pulse to the cross correlator (108), which performs cross correlation operations on filtered echo and pulse. By analyzing the cross correlator output data, the system (100) can determine peak variability within multiple frequency sub-bands, thereby allowing more accurate SNR estimations in noisy environments.

    摘要翻译: 一种用于估计声纳环境中的信噪比(SNR)并用于确定估计的SNR对声纳测距精度的影响的系统(100)和方法。 该系统包括传感器(102),发射器(103),接收器(104),多个带通滤波器(106),互相关器(108)和数据分析器(110)。 发射机(103)通过传输介质发送脉冲。 传感器(102)感测从所选择的目标(112)返回的回波,并且向接收器(104)提供表示回波的信号,接收机(104)进一步向带通滤波器(106)提供回波的指示。 滤波器(106)向互相关器(108)提供回波和脉冲的滤波版本,其对滤波后的回波和脉冲执行互相关操作。 通过分析交叉相关器输出数据,系统(100)可以确定多个频率子带内的峰值变化,从而允许在噪声环境中进行更准确的SNR估计。

    Acoustic cardiac assessment
    4.
    发明申请
    Acoustic cardiac assessment 失效
    声心脏评估

    公开(公告)号:US20060047213A1

    公开(公告)日:2006-03-02

    申请号:US10532178

    申请日:2003-10-12

    IPC分类号: A61B5/04 A61B5/02 A61B5/08

    摘要: A non-invasive method and apparatus for monitoring of the function of the heart and lungs in vulnerable patients. An analysis of the activity of the heart is made in correspondence to the respiratory system. Using the method of the invention, precise tracking of the changes of the mutual heart-lung interactions cycle are made, enabling better definitions of heart conditions. Within breath variability factor is introduced for tracking heart condition. Failing heart assisting methods and improved diagnostic methods are facilitated using the monitoring system of the invention.

    摘要翻译: 一种用于监测弱势患者心脏和肺部功能的非侵入性方法和装置。 根据呼吸系统对心脏的活动进行分析。 使用本发明的方法,精确跟踪相互心 - 肺相互作用周期的变化,使得能够更好地定义心脏状况。 引入呼吸变异因子用于跟踪心脏状况。 使用本发明的监视系统有助于减轻心脏辅助方法和改进的诊断方法。

    Apparatus and method for performing the delay estimation of signals propagating through an environment
    5.
    发明申请
    Apparatus and method for performing the delay estimation of signals propagating through an environment 失效
    对通过环境传播的信号执行时间延迟估计的装置和方法

    公开(公告)号:US20060235635A1

    公开(公告)日:2006-10-19

    申请号:US10567887

    申请日:2004-08-05

    IPC分类号: G06F19/00

    摘要: A system and method for increasing the accuracy of time delay estimates of signals propagating through an environment. The system includes one or more sensors for receiving a plurality of signals, and a time delay estimator for measuring time delays between multiple pairs of signals. At least some of the multiple pairs of signals are received and measured at different points in time. The system further includes a data analyzer for analyzing time delay estimation data, for generating a statistical distribution of time delay estimates from the data, and for calculating a statistical estimate of time delay from the distribution. By increasing the number of signals employed by the system, the accuracy of the time delay estimation is increased. Further, by calculating the median or the mode of the statistical distribution, noise tolerance is improved. The signals employed by the system may include sonar signals, seismic signals, ultrasonic signals, acoustic signals, electromagnetic signals, or any other suitable type of signals.

    摘要翻译: 一种用于增加通过环境传播的信号的时间延迟估计的精度的系统和方法。 该系统包括用于接收多个信号的一个或多个传感器,以及用于测量多对信号之间的时间延迟的时间延迟估计器。 在不同的时间点接收和测量多对信号中的至少一些。 该系统还包括用于分析时间延迟估计数据的数据分析器,用于从数据生成时间延迟估计的统计分布,以及用于从分布计算时间延迟的统计估计。 通过增加系统采用的信号数量,可以提高时间延迟估计的精度。 此外,通过计算统计分布的中值或模式,提高了噪声容限。 系统使用的信号可以包括声纳信号,地震信号,超声信号,声信号,电磁信号或任何其它合适类型的信号。

    Acoustic assessment of the heart
    6.
    发明授权
    Acoustic assessment of the heart 有权
    心脏声学评估

    公开(公告)号:US07819814B2

    公开(公告)日:2010-10-26

    申请号:US10532178

    申请日:2003-10-21

    摘要: A non-invasive method and apparatus for monitoring of the function of the heart and lungs in vulnerable patients. An analysis of the activity of the heart is made in correspondence to the respiratory system. Using the method of the invention, precise tracking of the changes of the mutual heart-lung interactions cycle are made, enabling better definitions of heart conditions. Within breath variability factor is introduced for tracking heart condition. Failing heart assisting methods and improved diagnostic methods are facilitated using the monitoring system of the invention.

    摘要翻译: 一种用于监测弱势患者心脏和肺部功能的非侵入性方法和装置。 根据呼吸系统对心脏的活动进行分析。 使用本发明的方法,精确跟踪相互心 - 肺相互作用周期的变化,使得能够更好地定义心脏状况。 引入呼吸变异因子用于跟踪心脏状况。 使用本发明的监视系统有助于减轻心脏辅助方法和改进的诊断方法。

    Apparatus and method for performing the time delay estimation of signals propagating through an environment
    7.
    发明授权
    Apparatus and method for performing the time delay estimation of signals propagating through an environment 失效
    对通过环境传播的信号执行时间延迟估计的装置和方法

    公开(公告)号:US07363177B2

    公开(公告)日:2008-04-22

    申请号:US10567887

    申请日:2004-08-05

    IPC分类号: G01R29/02

    摘要: A system and method for increasing the accuracy of time delay estimates of signals propagating through an environment. The system includes one or more sensors for receiving a plurality of signals, and a time delay estimator for measuring time delays between multiple pairs of signals. At least some of the multiple pairs of signals are received and measured at different points in time. The system further includes a data analyzer for analyzing time delay estimation data, for generating a statistical distribution of time delay estimates from the data, and for calculating a statistical estimate of time delay from the distribution. By increasing the number of signals employed by the system, the accuracy of the time delay estimation is increased. Further, by calculating the median or the mode of the statistical distribution, noise tolerance is improved.

    摘要翻译: 一种用于增加通过环境传播的信号的时间延迟估计的精度的系统和方法。 该系统包括用于接收多个信号的一个或多个传感器,以及用于测量多对信号之间的时间延迟的时间延迟估计器。 在不同的时间点接收和测量多对信号中的至少一些。 该系统还包括用于分析时间延迟估计数据的数据分析器,用于从数据生成时间延迟估计的统计分布,以及用于从分布计算时间延迟的统计估计。 通过增加系统采用的信号数量,可以提高时间延迟估计的精度。 此外,通过计算统计分布的中值或模式,提高了噪声容限。

    Noise adaptive sonar signal processor
    8.
    发明授权
    Noise adaptive sonar signal processor 失效
    噪声自适应声纳信号处理器

    公开(公告)号:US07239580B2

    公开(公告)日:2007-07-03

    申请号:US10559623

    申请日:2004-06-08

    IPC分类号: G01S15/02 G01S15/06 G01S15/32

    CPC分类号: G01S7/527

    摘要: A system and method of performing sonar range estimations in a noisy sonar environment. The system includes a sensor, a transmitter, a receiver, a plurality of band-pass filters, a cross correlator, and a data analyzer. The transmitter transmits a pulse through a transmission medium. The pulse travels through the transmission medium until it strikes an object, which returns an echo to the sensor. The sensor provides the echo to the receiver, which provides an indication of the echo to the band-pass filters. The respective band-pass filters provide filtered versions of the echo and pulse to the cross correlator, which performs multiple cross correlation operations on the filtered echo and pulse. The cross correlator provides output data to the data analyzer, which uses the data to estimate the SNR in the environment and to determine a pulse center frequency corresponding to the estimated SNR. By controlling the center frequency of pulses emitted by the transmitter based on information provided by the data analyzer, the system obtains sonar range estimations with increased accuracy.

    摘要翻译: 在噪声声纳环境中执行声纳范围估计的系统和方法。 该系统包括传感器,发射器,接收器,多个带通滤波器,互相关器和数据分析器。 发射机通过传输介质发送脉冲。 脉冲通过传输介质,直到其撞击物体,这将返回到传感器。 传感器向接收器提供回波,其提供带通滤波器的回波的指示。 相应的带通滤波器向互相关器提供回波和脉冲的滤波版本,其对滤波的回波和脉冲执行多个互相关操作。 交叉相关器向数据分析器提供输出数据,数据分析器使用数据来估计环境中的SNR,并确定与估计的SNR相对应的脉冲中心频率。 通过根据数据分析仪提供的信息控制发射机发出的脉冲的中心频率,系统以更高的精度获得声纳范围估计。

    Estimation of background noise and its effect on sonar range estimation
    10.
    发明授权
    Estimation of background noise and its effect on sonar range estimation 失效
    背景噪声的估计及其对声纳范围估计的影响

    公开(公告)号:US07289388B2

    公开(公告)日:2007-10-30

    申请号:US10559741

    申请日:2004-06-08

    IPC分类号: G01S15/02 G01S15/06 G01S15/32

    CPC分类号: G01S7/52004 G01S15/10

    摘要: A system and method for estimating the SNR in a sonar environment and for determining the effect of the estimated SNR on sonar ranging accuracy. The system includes a sensor, a transmitter, a receiver, a plurality of band-pass filters, a cross correlator, and a data analyzer. The transmitter transmits a first signal having a predetermined frequency range through a transmission medium. The sensor generates a second signal corresponding to an echo signal reflected from an object. The first and second signals are provided to the band-pass filters, each operative to pass a respective sub-band of frequencies. The filters provide filtered versions of the first and second signals to the cross correlator, which performs cross correlation operations on the filtered signals. A data analyzer analyzes the cross correlator output data to determine the variability of cross correlation peaks within each frequency sub-band, thereby allowing more accurate SNR estimations in noisy environments.

    摘要翻译: 一种用于估计声纳环境中的SNR并用于确定估计的SNR对声纳测距精度的影响的系统和方法。 该系统包括传感器,发射器,接收器,多个带通滤波器,互相关器和数据分析器。 发射机通过传输介质发送具有预定频率范围的第一信号。 传感器产生对应于从对象反射的回波信号的第二信号。 第一和第二信号被提供给带通滤波器,每个滤波器可操作以通过相应的频带子带。 滤波器将第一和第二信号的滤波器提供给交叉相关器,其对经滤波的信号执行互相关操作。 数据分析仪分析交叉相关器输出数据以确定每个频率子带内互相关峰值的变化,从而允许在嘈杂环境中进行更准确的SNR估计。