公开(公告)号：US06873570B2

公开(公告)日：2005-03-29

申请号：US10450944

申请日：2002-02-08

申请人： Weiqing Zhu ,  Xiaodong Liu ,  Min Zhu ,  Feng Pan ,  Xiangjun Zhang ,  Changhong Wang ,  Yuling Wang

发明人： Weiqing Zhu ,  Xiaodong Liu ,  Min Zhu ,  Feng Pan ,  Xiangjun Zhang ,  Changhong Wang ,  Yuling Wang

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。

公开(公告)号：US20050088916A1

公开(公告)日：2005-04-28

申请号：US10500328

申请日：2002-05-28

申请人： Weiqing Zhu ,  Min Zhu ,  Changhong Wang ,  Feng Pan

发明人： Weiqing Zhu ,  Min Zhu ,  Changhong Wang ,  Feng Pan

IPC分类号： H04B13/02 ,  H04B11/00

CPC分类号： H04B13/02

摘要： The present invention relates to a method and a system of a high code speed low error probability underwater acoustic coherent communication for underwater transferring instruction, data and image. The communication system includes a host machine installed on a mother ship or a main control underwater vehicles A and a guest machine installed on an underwater vehicle B, wherein the host machine comprises an electronic subassembly, a transducer and a receiving line array which is vertically deployed and consists of more than two hydrophones, and the guest machine comprises an electronic subassembly and a transmitting/receiving transducer. The signal processing method of the present invention is based on the joint technology of the space diversity, the self-optimized adaptive decision feedback equalizer and self-optimized adaptive phase tracker so as to overcome the affection of motion of the channel and the vehicles, such that the received signal could be quite close to the transmitted signal, and the bit error probability is low.

摘要翻译： 本发明涉及用于水下传送指令，数据和图像的高码速低误差概率水下声相干通信的方法和系统。 通信系统包括安装在母舰或主控水下航行器A上的主机，以及安装在水下航空器B上的客机，其中主机包括垂直展开的电子组件，换能器和接收线阵列 并且由两个以上的水听器组成，并且客机包括电子组件和发送/接收换能器。 本发明的信号处理方法是基于空间分集的联合技术，自优化的自适应判决反馈均衡器和自优化的自适应相位跟踪器，以克服信道和车辆的运动的影响， 接收到的信号可能非常接近发射信号，并且位错误概率低。

公开(公告)号：US20050036404A1

公开(公告)日：2005-02-17

申请号：US10450944

申请日：2002-02-08

申请人： Weiqing Zhu ,  Xiaodong Liu ,  Min Zhu ,  Feng Pan ,  Xiangjum Zhang ,  Changhong Wang ,  Yuling Wang

发明人： Weiqing Zhu ,  Xiaodong Liu ,  Min Zhu ,  Feng Pan ,  Xiangjum Zhang ,  Changhong Wang ,  Yuling Wang

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。

公开(公告)号：US07720629B2

公开(公告)日：2010-05-18

申请号：US10549199

申请日：2003-12-12

申请人： Weiqing Zhu ,  Changhong Wang

发明人： Weiqing Zhu ,  Changhong Wang

IPC分类号： G01S13/00 ,  G01S15/00 ,  G01P5/00 ,  G01F1/66

CPC分类号： G01S15/586 ,  G01P3/66 ,  G01P3/80 ,  G01P5/24 ,  G01S15/52 ,  G01S15/60

摘要： The present invention discloses a method and a system for measuring flow layer velocities using correlation velocity measuring sonar. The present invention provides a new theoretical expression for fluid medium sonar array temporal and spatial correlation function, the velocities of each flow layer are derived by fitting experimental data and a theoretical function, or fitting absolute value operated and localized experimental data and a theoretical function. The fluid medium sonar array temporal and spatial correlation function of the present invention is succinctly expressed by Kummer function, and well coincided with the experiments. This function is applicable not only to far field region, i.e. planar wave region, but also Fraunhofer region, i.e. spherical wave region. The present invention has the merits of high measurement accuracy, small calculation load, good robustness and fast convergence.

摘要翻译： 本发明公开了一种使用相关速度测量声纳测量流层速度的方法和系统。 本发明提供了流体介质声纳阵列时空相关函数的新理论表达式，通过拟合实验数据和理论函数，或拟合绝对值操作和局部化实验数据和理论函数得出每个流层的速度。 本发明的流体介质声纳阵列时空相关函数由Kummer函数简洁表达，与实验吻合良好。 该功能不仅适用于远场区域，即平面波区域，也可应用于弗劳恩霍夫区域，即球面波段。 本发明具有测量精度高，计算负荷小，鲁棒性好，收敛快等优点。

公开(公告)号：US07133327B2

公开(公告)日：2006-11-07

申请号：US10549196

申请日：2003-12-12

申请人： Weiqing Zhu ,  Changhong Wang

发明人： Weiqing Zhu ,  Changhong Wang

IPC分类号： G01S15/60

CPC分类号： G01S15/60

摘要： A method and a system for measuring the velocity of a vessel relative to the bottom using a velocity measuring correlation sonar are disclosed. The present invention provides a new theoretical expression for the bottom medium sonar array temporal and spatial correlation function. The velocity of the vessel relative to the bottom is derived by fitting experimental data to a theoretical function. The bottom medium sonar array temporal and spatial correlation function of the present invention is succinctly expressed in zero-rank Bessel function, and well coincided with experiments. The function is applicable not only to far field region, i.e. planar wave region, but also to Fraunhofer region, i.e. spherical wave region. Transmit transducers and receive transducers are multistatic in the velocity measuring correlation sonar of the present invention, so the transmit beam width and the receive beam width can be selected reasonably. The present invention is applicable to measuring the velocity of the vessel relative to the bottom with high measurement accuracy, small calculation load, good robustness and fast convergence.

摘要翻译： 公开了一种用于使用速度测量相关声纳来测量船舶相对于底部的速度的方法和系统。 本发明为底部介质声纳阵列的时间和空间相关函数提供了新的理论表达。 通过将实验数据拟合为理论函数，导出容器相对于底部的速度。 本发明的底部介质声纳阵列时空相关函数简洁地表示为零级贝塞尔函数，与实验吻合良好。 该功能不仅适用于远场区域，即平面波区域，也适用于弗劳恩霍夫区域，即球面波段。 发射传感器和接收换能器在本发明的速度测量相关声纳中是多状态的，因此可以合理地选择发射波束宽度和接收波束宽度。 本发明适用于测量精度高，计算负荷小，鲁棒性好，快速收敛的船舶相对底部的速度。

公开(公告)号：US20060171255A1

公开(公告)日：2006-08-03

申请号：US10549196

申请日：2003-12-12

申请人： Weiqing Zhu ,  Changhong Wang

发明人： Weiqing Zhu ,  Changhong Wang

IPC分类号： G01S15/60

CPC分类号： G01S15/60

摘要： A method and a system for measuring the velocity of a vessel relative to the bottom using a velocity measuring correlation sonar are disclosed. The present invention provides a new theoretical expression for the bottom medium sonar array temporal and spatial correlation function. The velocity of the vessel relative to the bottom is derived by fitting experimental data to a theoretical function. The bottom medium sonar array temporal and spatial correlation function of the present invention is succinctly expressed in zero-rank Bessel function, and well coincided with experiments. The function is applicable not only to far field region, i.e. planar wave region, but also to Fraunhofer region, i.e. spherical wave region. Transmit transducers and receive transducers are multistatic in the velocity measuring correlation sonar of the present invention, so the transmit beam width and the receive beam width can be selected reasonably. The present invention is applicable to measuring the velocity of the vessel relative to the bottom with high measurement accuracy, small calculation load, good robustness and fast convergence.

公开(公告)号：US20070129910A1

公开(公告)日：2007-06-07

申请号：US10549199

申请日：2003-12-12

申请人： Weiqing Zhu ,  Changhong Wang

发明人： Weiqing Zhu ,  Changhong Wang

IPC分类号： G01S15/58 ,  G01P5/24

CPC分类号： G01S15/586 ,  G01P3/66 ,  G01P3/80 ,  G01P5/24 ,  G01S15/52 ,  G01S15/60

摘要： The present invention discloses a method and a system for measuring flow layer velocities using correlation velocity measuring sonar. The present invention provides a new theoretical expression for fluid medium sonar array temporal and spatial correlation function, the velocities of each flow layer are derived by fitting experimental data and a theoretical function, or fitting absolute value operated and localized experimental data and a theoretical function. The fluid medium sonar array temporal and spatial correlation function of the present invention is succinctly expressed by Kummer function, and well coincided with the experiments. This function is applicable not only to far field region, i.e. planar wave region, but also Fraunhofer region, i.e. spherical wave region. The present invention has the merits of high measurement accuracy, small calculation load, good robustness and fast convergence.

摘要翻译： 本发明公开了一种使用相关速度测量声纳测量流层速度的方法和系统。 本发明提供了流体介质声纳阵列时空相关函数的新理论表达式，通过拟合实验数据和理论函数，或拟合绝对值操作和局部化实验数据和理论函数得出每个流层的速度。 本发明的流体介质声纳阵列时空相关函数由Kummer函数简洁表达，与实验吻合良好。 该功能不仅适用于远场区域，即平面波区域，也可应用于弗劳恩霍夫区域，即球面波段。 本发明具有测量精度高，计算负荷小，鲁棒性好，收敛快等优点。

公开(公告)号：US07876264B2

公开(公告)日：2011-01-25

申请号：US12051569

申请日：2008-03-19

申请人： Weiqing Zhu ,  Jun Hu ,  Xiaodong Liu ,  Zhiyu Liu ,  Feng Pan

发明人： Weiqing Zhu ,  Jun Hu ,  Xiaodong Liu ,  Zhiyu Liu ,  Feng Pan

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。

公开(公告)号：US20080231505A1

公开(公告)日：2008-09-25

申请号：US12051569

申请日：2008-03-19

申请人： Weiqing Zhu ,  Jun Hu ,  Xiaodong Liu ,  Zhiyu Liu ,  Feng Pan

发明人： Weiqing Zhu ,  Jun Hu ,  Xiaodong Liu ,  Zhiyu Liu ,  Feng Pan

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。

公开(公告)号：US07315487B2

公开(公告)日：2008-01-01

申请号：US11490078

申请日：2006-07-21

申请人： Weiqing Zhu ,  Xiaodong Liu ,  Wen Xu

发明人： Weiqing Zhu ,  Xiaodong Liu ,  Wen Xu

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。