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    Communication system using geographic position data
    1.
    发明授权
    Communication system using geographic position data 失效
    通信系统使用地理位置数据

    公开(公告)号：US06593880B2

    公开(公告)日：2003-07-15

    申请号：US09188835

    申请日：1998-11-09

    申请人： Scott R. Velazquez ,  Steven R. Broadstone ,  Alice M. Chiang

    发明人： Scott R. Velazquez ,  Steven R. Broadstone ,  Alice M. Chiang

    IPC分类号： H04B700

    CPC分类号： H04W16/28 ,  G01S5/0027 ,  G01S5/12 ,  G01S19/06 ,  G01S19/51 ,  G01S19/53

    摘要： A wireless communication system employs directive antenna arrays and knowledge of position of users to form narrow antenna beams to and from desired users and away from undesired users to reduce co-channel interference. By reducing co-channel interference coming from different directions, spatial filtering with antenna arrays improves the call capacity of the system. A space division multiple access (SDMA) system allocates a narrow antenna beam pattern to each user in the system so that each user has its own communication channel free from co-channel interference. The position of the users is determined using geo-location techniques. Geo-location can be derived via triangulation between cellular base stations or via a global positioning system (GPS) receiver. The system can be optimized by applying partially adaptive processing algorithms, which are seeded by geo-location data.

    摘要翻译： 无线通信系统使用指令性天线阵列和用户位置知识来形成到所需用户和来自期望用户的远离不期望的用户的窄天线波束，以减少同频道干扰。 通过减少来自不同方向的同信道干扰，利用天线阵列的空间滤波改善了系统的呼叫容量。 空分多址（SDMA）系统为系统中的每个用户分配窄天线波束模式，使得每个用户具有其自身的通信信道不受同频道干扰。 使用地理位置技术确定用户的位置。 地理位置可以通过蜂窝基站之间的三角测量或通过全球定位系统（GPS）接收机得出。 可以通过应用部分自适应处理算法来优化系统，这些算法由地理位置数据种子化。

    Communication system using geographic position data
    2.
    发明授权
    Communication system using geographic position data 失效
    通信系统使用地理位置数据

    公开(公告)号：US06512481B1

    公开(公告)日：2003-01-28

    申请号：US08729289

    申请日：1996-10-10

    申请人： Scott R. Velazquez ,  Steven R. Broadstone

    发明人： Scott R. Velazquez ,  Steven R. Broadstone

    IPC分类号： H04B700

    CPC分类号： H04W16/28 ,  G01S5/0027 ,  G01S5/12 ,  G01S19/06 ,  G01S19/51 ,  G01S19/53

    摘要： A wireless communication system employs directive antenna arrays and knowledge of position of users to form narrow antenna beams to and from desired users and away from undesired users to reduce co-channel interference. By reducing co-channel interference coming from different directions, spatial filtering with antenna arrays improves the call capacity of the system. A space division multiple access (SDMA) system allocates a narrow antenna beam pattern to each user in the system so that each user has its own communication channel free from co-channel interference. The position of the users is determined using geo-location techniques. Geo-location can be derived via triangulation between cellular base stations or via a global positioning system (GPS) receiver.

    摘要翻译： 无线通信系统使用指令性天线阵列和用户位置知识来形成到所需用户和来自期望用户的远离不期望的用户的窄天线波束，以减少同频道干扰。 通过减少来自不同方向的同信道干扰，利用天线阵列的空间滤波改善了系统的呼叫容量。 空分多址（SDMA）系统为系统中的每个用户分配窄天线波束模式，使得每个用户具有其自身的通信信道不受同频道干扰。 使用地理位置技术确定用户的位置。 地理位置可以通过蜂窝基站之间的三角测量或通过全球定位系统（GPS）接收机得出。

    Hybrid filter bank analog/digital converter
    3.
    发明授权
    Hybrid filter bank analog/digital converter 失效
    混合滤波器组模拟/数字转换器

    公开(公告)号：US5568142A

    公开(公告)日：1996-10-22

    申请号：US326474

    申请日：1994-10-20

    申请人： Scott R. Velazquez ,  Truong O. Nguyen ,  Steven R. Broadstone

    发明人： Scott R. Velazquez ,  Truong O. Nguyen ,  Steven R. Broadstone

    IPC分类号： G10L11/00 ,  H03H17/02 ,  H03M1/08 ,  H03M1/12 ,  H03M1/00

    CPC分类号： H03M1/121 ,  H03H17/0266

    摘要： A hybrid filter bank analog-to-digital converter includes continuous-time analysis filters and discrete-time synthesis filters. The continuous-time analysis filters partition a continuous-time wideband input signal into continuous-time subband signals. An analog-to-digital converter bank quantizes the subband signals at a low data rate. A bank of upsamplers increases the data rate of the quantized subband signals. A bank of discrete-time synthesis filters processes the upsampled subband signals, generating signals which are the discrete-time approximation of the continuous-time subband signals. The subband signals may be recombined into a discrete-time wideband signal which is the discrete-time approximation of the continuous-time wideband input signal. The linearity errors, analog-to-digital converter mismatches and quantization noise are not compounded between the frequency bands, thereby increasing resolution. The system may also include compensators for compensating for non-linear behavior in the analog-to-digital converters and may include application-specific processors for further processing of the compensated subband signals. An alternative embodiment employs discrete-time analysis filters and continuous-time synthesis filters for digital-to-analog conversion.

    摘要翻译： 混合滤波器组模数转换器包括连续时间分析滤波器和离散时间合成滤波器。 连续时间分析滤波器将连续时间宽带输入信号划分为连续时间子带信号。 模数转换器组以低数据速率量化子带信号。 一组上采样器增加量化子带信号的数据速率。 离散时间合成滤波器组处理上采样的子带信号，产生作为连续时间子带信号的离散时间近似的信号。 子带信号可以被重新组合成离散时间宽带信号，其是连续时间宽带输入信号的离散时间近似。 线性误差，模数转换器不匹配和量化噪声不会在频带之间复合，从而提高分辨率。 该系统还可以包括用于补偿模数转换器中的非线性行为的补偿器，并且可以包括用于进一步处理补偿的子带信号的应用专用处理器。 替代实施例采用离散时间分析滤波器和用于数模转换的连续时间合成滤波器。

    Steerable beamforming system
    4.
    发明授权
    Steerable beamforming system 有权

    公开(公告)号：US06552964B2

    公开(公告)日：2003-04-22

    申请号：US09828266

    申请日：2001-04-06

    申请人： Alice M. Chiang ,  Steven R. Broadstone

    发明人： Alice M. Chiang ,  Steven R. Broadstone

    IPC分类号： H04B102

    CPC分类号： G01S7/52085 ,  G01S7/52095 ,  G01S15/8927 ,  G10K11/346 ,  H01Q3/26 ,  H01Q3/2682 ,  H01Q25/00

    摘要： The need for multiple, cost-effective deployment of an underwater camera has resulted in the development of a low-power high-resolution imaging system using a sparse array. The system can be used for undersea acoustic mine-field reconnaissance and mine-hunting systems for example, this imaging sonar is portable enough for use in a diver's hands or in a remote imaging sonar on an unmanned undersea vehicle in shallow waters. The present system can simultaneously focus many signals using multiple CCD/CMOS, programmable time-delay beamforming circuits connected to a sparsely-populated 2D acoustic array, is being developed. Using this approach, a real-time image can be formed to search for mine-like objects. To make a sparse array, the combination of low insertion loss and wide bandwidth performance is important for realizing acceptable imaging performance with low illumination levels.

    Multi-dimensional beamforming device
    5.
    发明授权
    Multi-dimensional beamforming device 失效
    多维波束成形装置

    公开(公告)号：US06292433B1

    公开(公告)日：2001-09-18

    申请号：US09364699

    申请日：1999-07-30

    申请人： Jeffrey M. Gilbert ,  Alice M. Chiang ,  Steven R. Broadstone

    发明人： Jeffrey M. Gilbert ,  Alice M. Chiang ,  Steven R. Broadstone

    IPC分类号： G03B4206

    CPC分类号： G01S7/52085 ,  G01S7/52095 ,  G01S15/8927 ,  G10K11/346 ,  H01Q3/26 ,  H01Q3/2682 ,  H01Q25/00

    摘要： A multi-dimensional beamforming device that performs consecutive one-dimensional operations. For example, beamsteering for a two-dimensional array can be include a projection of a beam onto each of the respective axes of the array. In such a device, a first beamforming processing element is used to form multiple beams for each array output along a given row. In a preferred embodiment, sequential output vectors from the first processing element are then applied to a transposing or corner turning memory and the data are reformatted such that all elements on a given column of the array are applied to a second beam forming processing element.

    摘要翻译： 执行连续一维操作的多维波束成形装置。 例如，用于二维阵列的波束引导可以包括将波束投影到阵列的每个相应的轴上。 在这种装置中，第一波束成形处理元件用于沿着给定的行为每个阵列输出形成多个波束。 在优选实施例中，来自第一处理元件的顺序输出矢量然后被施加到转置或转角转动存储器，并且重新格式化数据，使得阵列的给定列上的所有元素被施加到第二波束形成处理元件。

    Sonar beamforming system
    10.
    发明授权
    Sonar beamforming system 有权
    声纳波束成形系统

    公开(公告)号：US06842401B2

    公开(公告)日：2005-01-11

    申请号：US09909141

    申请日：2001-07-19

    申请人： Alice M. Chiang ,  Steven R. Broadstone

    发明人： Alice M. Chiang ,  Steven R. Broadstone

    IPC分类号： G01S7/521 ,  G01S15/89 ,  G01S15/93 ,  G10K11/34 ,  H01Q3/26 ,  H01Q25/00 ,  H04B1/02

    CPC分类号： G10K11/346 ,  G01S7/521 ,  G01S15/8904 ,  G01S15/93 ,  G10K11/34 ,  H01Q3/26 ,  H01Q3/2682 ,  H01Q25/00

    摘要： The present invention relates to sonar beamforming systems and methods, using a forward-looking sonar having transmit and receive transducer arrays with a beamforming device and at least one side-looking sonar having dynamically range-focused beams. The forward-looking sonar provides for obstacle avoidance and undersea survey. The systems include one-dimensional transmit and receive transducer arrays with beamforming electronics, a computing controller such as, for example, a personal computer host controller. The arrays and beamforming electronics can be packaged in a hermetically sealed housing unit and mounted in Unmanned Underwater Vehicles (UUV). The side-looking sonar system includes for example, 32-element, one-dimensional arrays that are mounted on either side of the UUVs. Further, a downward looking Bathymetric sonar may be mounted on the underside of the vehicle for high-resolution mapping.

    摘要翻译： 本发明涉及声纳波束成形系统和方法，其使用具有波束成形装置的发射和接收换能器阵列的前视声纳和具有动态范围聚焦波束的至少一个侧视声纳。 前瞻性声纳提供了避障和海底测量。 这些系统包括具有波束形成电子器件的一维发射和接收换能器阵列，诸如个人计算机主机控制器的计算控制器。 阵列和波束形成电子器件可以封装在密封的壳体单元中，并安装在无人水下车辆（UUV）中。 侧视声纳系统包括例如安装在UUV的任一侧上的32元素的一维阵列。 此外，可以在车辆的下侧安装向下看的测深声纳，用于高分辨率测绘。