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    • 44. 发明授权
    • Signal processing system and method for use in multibeam sensing systems
    • 用于多光束感测系统的信号处理系统和方法
    • US5663930A
    • 1997-09-02
    • US529542
    • 1995-09-18
    • William Jack Capell, Sr.Christos ZabounidisKushal Kanti Talukdar
    • William Jack Capell, Sr.Christos ZabounidisKushal Kanti Talukdar
    • G01S3/80G01S3/805G01S7/52G01S7/523G01S15/89G10K11/34
    • G01S15/89G01S3/805G01S7/52003G10K11/341Y10S367/905
    • The present invention is a system and technique for reducing the effective beam width of a receive beam for a sensing system, for example a sonar or radar system. The sensing system includes a plurality of physical sensors each for measuring a receive signal wherein each receive signal includes a first and second data processing unit. The sensing system may include means for computing sensor data for at least one extrapolated-sensor, including, first extrapolation means for computing a first extrapolated-sensor data unit of the at least one extrapolated-sensor by extrapolation of a first data processing unit of the plurality of physical sensors, and second extrapolation means for computing a second extrapolated-sensor data unit of the at least one extrapolated-sensor by extrapolation of a second data processing unit of the plurality of physical sensors. The system may also include means for combining the first and second extrapolated-sensor data units of the at least one extrapolated-sensor to the first and second data processing units of the plurality of physical sensors to thereby generate a narrower effective beam width of a receive beam.
    • 本发明是用于减小感测系统(例如声纳或雷达系统)的接收波束的有效波束宽度的系统和技术。 感测系统包括多个物理传感器,每个物理传感器用于测量接收信号,其中每个接收信号包括第一和第二数据处理单元。 感测系统可以包括用于计算至少一个外推传感器的传感器数据的装置,包括用于通过外推所述至少一个外推传感器的第一数据处理单元的外推来计算所述至少一个外推传感器的第一外插传感器数据单元的第一外推装置 多个物理传感器,以及第二外插装置,用于通过外插所述多个物理传感器的第二数据处理单元来计算所述至少一个外插传感器的第二外插传感器数据单元。 该系统还可以包括用于将至少一个外推传感器的第一和第二外插传感器数据单元组合到多个物理传感器的第一和第二数据处理单元的装置,从而产生接收器的较窄的有效波束宽度 光束。
    • 45. 发明授权
    • Signal processing system and method for use in multibeam sensing systems
    • 用于多光束感测系统的信号处理系统和方法
    • US5483500A
    • 1996-01-09
    • US167365
    • 1993-12-16
    • William J. Capell, Sr.Christos ZabounidisKushal K. Talukdar
    • William J. Capell, Sr.Christos ZabounidisKushal K. Talukdar
    • G01S3/80G01S3/805G01S7/52G01S7/523G01S15/89G10K11/34
    • G01S15/89G01S3/805G01S7/52003G10K11/341Y10S367/905
    • The present invention is a system and technique for reducing the effective beam width of a receive beam for a sensing system, for example a sonar or radar system. The sensing system includes a plurality of physical sensors each for measuring a receive signal wherein each receive signal includes a first and second data processing unit. The sensing system may include means for computing sensor data for at least one extrapolated-sensor, including, first extrapolation means for computing a first extrapolated-sensor data unit of the at least one extrapolated-sensor by extrapolation of a first data processing unit of the plurality of physical sensors, and second extrapolation means for computing a second extrapolated-sensor data unit of the at least one extrapolated-sensor by extrapolation of a second data processing unit of the plurality of physical sensors. The system may also include means for combining the first and second extrapolated-sensor data units of the at least one extrapolated-sensor to the first and second data processing units of the plurality of physical sensors to thereby generate a narrower effective beam width of a receive beam.
    • 本发明是用于减小感测系统(例如声纳或雷达系统)的接收波束的有效波束宽度的系统和技术。 感测系统包括多个物理传感器,每个物理传感器用于测量接收信号,其中每个接收信号包括第一和第二数据处理单元。 感测系统可以包括用于计算至少一个外推传感器的传感器数据的装置,包括用于通过外推所述至少一个外推传感器的第一数据处理单元的外推来计算所述至少一个外推传感器的第一外插传感器数据单元的第一外推装置 多个物理传感器,以及第二外插装置,用于通过外插所述多个物理传感器的第二数据处理单元来计算所述至少一个外插传感器的第二外插传感器数据单元。 该系统还可以包括用于将至少一个外推传感器的第一和第二外插传感器数据单元组合到多个物理传感器的第一和第二数据处理单元的装置,从而产生接收器的较窄的有效波束宽度 光束。
    • 46. 发明授权
    • Target tracking system for determining bearing of a target
    • 用于确定目标的方位的目标跟踪系统
    • US5095467A
    • 1992-03-10
    • US582571
    • 1990-09-14
    • David P. OlsonJonathan C. Werder
    • David P. OlsonJonathan C. Werder
    • G01S3/801G01S3/805
    • G01S3/805G01S3/801
    • A passive acoustic target tracking system includes three microphones arrayed respectively at corners of an equilateral triangle for sensing acoustic energy emitted by a target, such as a heavy vehicle, and generating separate streams of analog signals representative of the acoustic energy sensed at the triangle corners. Hardware of the tracking system receives the separate streams of analog signals from the microphones and conditions and converts the separate streams of analog signals from analog to digital form and outputs the separate streams as digital signals. Software of the tracking system receives the separate streams of digital signals and provides the bearing to the target emitting the sensed acoustic energy. The software includes a minimum residual correlation algorithm and a two-state kalman filter algorithm. The minimum residual correlation algorithm receives the separate streams of digital signals, performs correlations on the separate streams from pairs of the microphones, and produces a raw azimuth signal as a result of the correlation. The two-state kalman filter algorithm receives the raw azimuth signal, performs a two-state kalman filtering of the raw azimuth signal, and produces a smooth azimuth signal constituting the bearing to the target emitting the sensed acoustic energy.
    • 无源声目标跟踪系统包括分别排列在等边三角形的拐角处的三个麦克风,用于感测由诸如重型车辆的目标发出的声能,并且产生代表在三角形拐角处感测到的声能的单独的模拟信号流。 跟踪系统的硬件从麦克风接收单独的模拟信号流和条件,并将单独的模拟信号流从模拟形式转换为数字形式,并将单独的流作为数字信号输出。 跟踪系统的软件接收单独的数字信号流,并向发射感测声能的目标提供支撑。 该软件包括最小残差相关算法和双状态卡尔曼滤波算法。 最小残差相关算法接收单独的数字信号流,在与麦克风对成对的单独流上执行相关性,并产生作为相关结果的原始方位信号。 双状态卡尔曼滤波算法接收原始方位信号,对原始方位信号进行双状态卡尔曼滤波,并产生构成对发射感测声能的目标的方位角的平滑方位信号。
    • 47. 发明授权
    • Directional acoustic logger apparatus and method
    • 定向声记录仪设备及方法
    • US4744416A
    • 1988-05-17
    • US80132
    • 1987-07-31
    • Frank M. Bower
    • Frank M. Bower
    • E21B43/119E21B47/02E21B47/10G01S3/805G01V1/46E21B33/13
    • G01S3/805E21B43/119E21B47/02E21B47/101G01V1/46
    • An acoustic logging apparatus and method are disclosed for determining the direction of a subsurface noise source, such as a blowout well or fluid channeling behind well casing. The apparatus comprises cylindrical piezoelectric crystal transducers processed to buck each other. The method employs such an apparatus and includes generating and observing output from the crystals. The direction of the noise relative to the position of the apparatus is indicated by determining the position of the crystal transducers when their phase and amplitude differences are at a minimum. The transducer leading in phase at a point perpendicular to said position is the transducer closest to the noise source and is used to indicate the absolute direction of the noise.
    • 公开了一种用于确定地下噪声源的方向的声学测井装置和方法,例如在井套管之后的井喷井或流体通道。 该装置包括被处理成相互抵消的圆柱形压电晶体换能器。 该方法采用这种装置,并且包括产生和观察晶体的输出。 当相位和振幅差最小时,通过确定晶体换能器的位置来指示噪声相对于装置位置的方向。 在垂直于所述位置的点处相位导通的换能器是最靠近噪声源的换能器,用于指示噪声的绝对方向。
    • 48. 发明授权
    • Tilt compensation for acoustic transducing system
    • 声学传感系统的倾斜补偿
    • US4179682A
    • 1979-12-18
    • US930824
    • 1978-08-03
    • Robert L. Townsend
    • Robert L. Townsend
    • G01S3/802G01S3/805G01S3/80
    • G01S3/802G01S3/805
    • A tilt compensated transducer array is provided with omni-directional transducers, compensated bi-directional transducers, and a processor which forms omni and bi-directional beams that are combined to cancel image lobes to give the array a uni-directional characteristic in which but a single, steerable main lobe is formed over a board range of steering angles. When the elements are located along a flexible line about which they naturally twist, a pair of orthogonally oriented bi-directional transducers is tilt or twist compensated to make image lobe cancellation possible. This is done by a compensator at each pair of bi-directional transducers which modifies their outputs in accordance with the deflection angle from the local vertical so as to obtain an output signal substantially the same as would be obtained by a single, properly oriented bi-directional transducer. Additionally, the use of a tilt compensated element permits discrimination of long range targets from short range targets.
    • 提供了一种倾斜补偿的换能器阵列,其具有全向换能器,补偿双向换能器和形成全向和双向波束的处理器,其被组合以抵消图像波瓣以给阵列单向特性,其中但是 单个可转向的主瓣形成在转向角度的板的范围内。 当元件沿着它们自然扭转的柔性线定位时,一对正交定向的双向换能器被倾斜或扭曲补偿,以使图像波瓣取消成为可能。 这是通过在每对双向换能器上的补偿器完成的,该双向换能器根据与局部垂直线的偏转角修正其输出,从而获得与通过单个适当定向的双向换能器获得的输出信号基本相同的输出信号, 定向传感器。 另外,使用倾斜补偿元件允许从短距离目标区分远距离目标。