HIGH RESOLUTION BATHYMETRIC SONAR SYSTEM AND MEASURING METHOD FOR MEASURING THE PHYSIOGNOMY OF THE SEABED
    1.
    发明申请
    HIGH RESOLUTION BATHYMETRIC SONAR SYSTEM AND MEASURING METHOD FOR MEASURING THE PHYSIOGNOMY OF THE SEABED 有权
    高分辨率卫星声音系统和测量海床生理测量方法

    公开(公告)号:US20050036404A1

    公开(公告)日:2005-02-17

    申请号:US10450944

    申请日:2002-02-08

    IPC分类号: G01S15/89

    CPC分类号: G01S15/8904

    摘要: A high resolution bathymetric sidescan sonar system for measuring micro-geomorphy of the sea bottom having an underwater vehicle, an underwater electronic subsystem mounted on the underwater vehicle and containing a transmitter and a receiver, and two sonar arrays mounted symmetrically on two sides of a lower part of the underwater vehicle and being connected to the underwater electronic subsystem through a cable. Each sonar array has a transmitting linear array and three or more parallel receiving linear arrays. The parallel receiving linear arrays are arranged at equal spaces, and the space d between two adjacent parallel receiving linear arrays is λ>d≧λ/2, in which λ is a wavelength of an acoustic wave, and an operation frequency of the parallel receiving linear arrays ranges from 30 kHz to 1200 kHz.

    摘要翻译: 一种用于测量具有水下航行器的海底微地貌的高分辨率测深侧视声纳系统,安装在水下航行器上并包含发射器和接收器的水下电子子系统,以及对称地安装在下侧两侧的两个声纳阵列 部分水下航行器,并通过电缆连接到水下电子子系统。 每个声纳阵列具有发送线性阵列和三个或更多个并行接收线性阵列。 平行接收线性阵列被布置成相等的空间,并且两个相邻的并行接收线性阵列之间的空间d是λ> d> =λ/ 2,其中λ是声波的波长,并行的并行接收线性阵列的操作频率 接收线性阵列的范围为30 kHz至1200 kHz。

    High resolution bathymetric sonar system and measuring method for measuring the physiognomy of the seabed
    2.
    发明授权
    High resolution bathymetric sonar system and measuring method for measuring the physiognomy of the seabed 有权
    高分辨率测深声纳系统和测量海床地貌的测量方法

    公开(公告)号:US06873570B2

    公开(公告)日:2005-03-29

    申请号:US10450944

    申请日:2002-02-08

    IPC分类号: G01S15/89

    CPC分类号: G01S15/8904

    摘要: A high resolution bathymetric sidescan sonar system for measuring micro-geomorphy of the sea bottom having an underwater vehicle, an underwater electronic subsystem mounted on the underwater vehicle and containing a transmitter and a receiver, and two sonar arrays mounted symmetrically on two sides of a lower part of the underwater vehicle and being connected to the underwater electronic subsystem through a cable. Each sonar array has a transmitting linear array and three or more parallel receiving linear arrays. The parallel receiving linear arrays are arranged at equal spaces, and the space d between two adjacent parallel receiving linear arrays is λ>d≧λ/2, in which λ is a wavelength of an acoustic wave, and an operation frequency of the parallel receiving linear arrays ranges from 30 kHz to 1200 kHz.

    摘要翻译: 一种用于测量具有水下航行器的海底微地貌的高分辨率测深侧视声纳系统,安装在水下航行器上并包含发射器和接收器的水下电子子系统,以及对称地安装在下侧两侧的两个声纳阵列 部分水下航行器,并通过电缆连接到水下电子子系统。 每个声纳阵列具有发送线性阵列和三个或更多个并行接收线性阵列。 平行接收线性阵列被布置成相等的空间,并且两个相邻的并行接收线性阵列之间的空间d是λ> d> =λ/ 2,其中λ是声波的波长,并行的并行接收线性阵列的操作频率 接收线性阵列的范围为30 kHz至1200 kHz。

    Method of Source Number Estimation and Its Application in Method of Direction of Arrival Estimation
    3.
    发明申请
    Method of Source Number Estimation and Its Application in Method of Direction of Arrival Estimation 有权
    源数估计方法及其在到达方向估计方法中的应用

    公开(公告)号:US20080231505A1

    公开(公告)日:2008-09-25

    申请号:US12051569

    申请日:2008-03-19

    IPC分类号: G01S3/00

    CPC分类号: G01S3/74

    摘要: The present invention provides a method of source number estimation based on eigenspace in DOA estimation, including: (1) obtaining signals received by uniform linear array; (2) calculating a covariance matrix according to the received signals; (3) calculating a complex-valued covariance matrix or a covariance matrix after real-valued computations; (4) conducting eigendecomposition to the covariance matrix to obtain its eigenvector matrix; (5) calculating a source number decision based on the eigenvector; (6) calculating a ratio; and (7) source number estimation. The present invention can accurately estimate source number and save huge amounts of computation during signal processing in DOA estimation, and lower the cost of hardware.

    摘要翻译: 本发明提供了一种基于DOA估计中的本征空间的源数估计方法,包括:(1)获得均匀线性阵列接收的信号; (2)根据接收信号计算协方差矩阵; (3)在实值计算之后计算复值协方差矩阵或协方差矩阵; (4)对协方差矩阵进行特征分解,得到其特征向量矩阵; (5)基于特征向量计算源数量决定; (6)计算比率; 和(7)源数估计。 本发明可以在DOA估计中的信号处理期间准确地估计源数量并节省大量的计算量,降低硬件成本。

    Method of source number estimation and its application in method of direction of arrival estimation
    4.
    发明授权
    Method of source number estimation and its application in method of direction of arrival estimation 有权
    源数估计方法及其在到达方向估计方法中的应用

    公开(公告)号:US07876264B2

    公开(公告)日:2011-01-25

    申请号:US12051569

    申请日:2008-03-19

    IPC分类号: G01S5/02 G01S3/14

    CPC分类号: G01S3/74

    摘要: The present invention provides a method of source number estimation based on eigenspace in DOA estimation, including: (1) obtaining signals received by uniform linear array; (2) calculating a covariance matrix according to the received signals; (3) calculating a complex-valued covariance matrix or a covariance matrix after real-valued computations; (4) conducting eigendecomposition to the covariance matrix to obtain its eigenvector matrix; (5) calculating a source number decision based on the eigenvector; (6) calculating a ratio; and (7) source number estimation. The present invention can accurately estimate source number and save huge amounts of computation during signal processing in DOA estimation, and lower the cost of hardware.

    摘要翻译: 本发明提供了一种基于DOA估计中的本征空间的源数估计方法,包括:(1)获得均匀线性阵列接收的信号; (2)根据接收信号计算协方差矩阵; (3)在实值计算之后计算复值协方差矩阵或协方差矩阵; (4)对协方差矩阵进行特征分解,得到其特征向量矩阵; (5)基于特征向量计算源数量决定; (6)计算比率; 和(7)源数估计。 本发明可以在DOA估计中的信号处理期间准确地估计源数量并节省大量的计算量,降低硬件成本。

    Method of signal processing for high resolution bathymetric sidescan sonar
    5.
    发明申请
    Method of signal processing for high resolution bathymetric sidescan sonar 失效
    高分辨率测深侧声波信号处理方法

    公开(公告)号:US20070091723A1

    公开(公告)日:2007-04-26

    申请号:US11490078

    申请日:2006-07-21

    IPC分类号: G01S15/89

    CPC分类号: G01S15/8902 G01S15/8927

    摘要: A processing method of this invention relates to an angle of arrival estimation technique, where by a high resolution bathymetric sidescan sonar signal process method it measure the micro-geomorphy of the sea bottom. This is the multi-subarray sub-space fitting method. The invention shows that when the array elements number is fixed, no matter there is mutual coupling or not between array elements, there exists one sub-array which has the smallest phase estimation standard deviation, the method of this invention overcomes the phase error caused by mutual coupling and enhances the measurement precision.

    摘要翻译: 本发明的处理方法涉及一种到达角度估计技术,其中通过高分辨率测深侧视声纳信号处理方法测量海底的微地貌。 这是多子阵列子空间拟合方法。 本发明表明,当阵列元件数量固定时,无论阵列元件之间是否存在互耦,存在一个具有最小相位估计标准偏差的子阵列,本发明的方法克服了由 相互耦合,提高测量精度。

    Method of signal processing for high resolution bathymetric sidescan sonar
    6.
    发明授权
    Method of signal processing for high resolution bathymetric sidescan sonar 失效
    高分辨率测深侧声波信号处理方法

    公开(公告)号:US07315487B2

    公开(公告)日:2008-01-01

    申请号:US11490078

    申请日:2006-07-21

    IPC分类号: G01S15/89

    CPC分类号: G01S15/8902 G01S15/8927

    摘要: A processing method of this invention relates to an angle of arrival estimation technique, where by a high resolution bathymetric sidescan sonar signal process method it measure the micro-geomorphy of the sea bottom. That is the multi-subarray sub-space fitting method. The invention shows that when the array elements number is fixed, no matter there is mutual coupling or not between array elements, there exists one subarray which has the smallest phase estimation standard deviation, the method of this invention overcomes the phase error caused by mutual coupling and enhances the measurement precision.

    摘要翻译: 本发明的处理方法涉及一种到达角度估计技术,其中通过高分辨率的测深侧视声纳信号处理方法测量海底的微观地貌。 那就是多子阵列子空间拟合方法。 本发明表明,当阵列元件数量固定时,无论阵列元件之间是否存在互耦,存在一个具有最小相位估计标准偏差的子阵列,本发明的方法克服了由相互耦合引起的相位误差 并提高测量精度。

    Electric motor assist for transmission electric oil pump
    8.
    发明授权
    Electric motor assist for transmission electric oil pump 有权
    电动马达辅助传动电动油泵

    公开(公告)号:US08795118B2

    公开(公告)日:2014-08-05

    申请号:US13409388

    申请日:2012-03-01

    IPC分类号: F16H3/72 F16H31/00

    摘要: A method for assisting a transmission oil pump in a hybrid electric powertrain to generate transmission oil pressure rapidly during vehicle start. An electric motor is initially utilized to provide momentary torque to rotate an oil pump and rapidly generate transmission oil pressure. After initial assistance is provided by the electric motor, an oil pump electric motor powers the oil pump and maintains oil pressure within the hybrid powertrain.

    摘要翻译: 一种用于在混合动力传动系中辅助变速器油泵以在车辆启动期间快速产生变速器油压的方法。 最初使用电动马达来提供瞬时扭矩来旋转油泵并快速产生变速器油压。 在由电动机提供初始帮助之后,油泵电动机为油泵供电并保持混合动力系统内的油压。

    ELECTRIC MOTOR ASSIST FOR TRANSMISSION ELECTRIC OIL PUMP
    10.
    发明申请
    ELECTRIC MOTOR ASSIST FOR TRANSMISSION ELECTRIC OIL PUMP 有权
    用于变速电油泵的电动马达

    公开(公告)号:US20120275930A1

    公开(公告)日:2012-11-01

    申请号:US13409388

    申请日:2012-03-01

    IPC分类号: F04D13/06

    摘要: A method for assisting a transmission oil pump in a hybrid electric powertrain to generate transmission oil pressure rapidly during vehicle start. An electric motor is initially utilized to provide momentary torque to rotate an oil pump and rapidly generate transmission oil pressure. After initial assistance is provided by the electric motor, an oil pump electric motor powers the oil pump and maintains oil pressure within the hybrid powertrain.

    摘要翻译: 一种用于在混合动力传动系中辅助变速器油泵以在车辆启动期间快速产生变速器油压的方法。 最初使用电动马达来提供瞬时扭矩来旋转油泵并快速产生变速器油压。 在由电动机提供初始帮助之后,油泵电动机为油泵供电并保持混合动力系统内的油压。