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    • 7. 发明授权
    • Apparatus and method for automatic antenna beam positioning
    • 自动天线波束定位的装置和方法
    • US5434578A
    • 1995-07-18
    • US139674
    • 1993-10-22
    • Roy R. Stehlik
    • Roy R. Stehlik
    • H01Q3/26H01J29/52
    • H01Q3/26
    • A system for automatically forming a receive beam being positioned in the direction of a corresponding incoming signal, the system having a known signal corresponding to the incoming signal. The system comprises a plurality, M, of channels, each of the channels collecting the incoming signal and generating a plurality, L, of incoming complex data samples for the incoming signal and a plurality, L, of known complex data samples for the known signal. The system also includes severaly digital beamforming means for forming the receive beam. Each of the digital beamforming means includes means, coupled to the channels, for computing an M by 1 weight vector, W, having several weight elements each corresponding to one of the channels, the computing means including means for solving, for W, the equation, R W=C, where R is an M by M coefficient matrix, an element in the i-th row and the j-th column being an estimate of a value obtained from cross-correlating the incoming complex data sample generated by the i-th channel with the incoming complex data sample of the j-th channel, and where C is an M by 1 constant vector, an element in the i-th row being an estimate of a value obtained from cross-correlating the incoming complex data sample generated by the i-th channel with the known complex data samples. Each of the digital beamforming means further includes multipliers for generating weighted signals, each of the multipliers coupled to a corresponding one of the channels and multiplying one of the weight elements by the incoming complex data samples generated by the corresponding channel, and an adder, coupled to the multipliers, for adding each of the weighted signals.
    • 一种用于自动形成接收光束的方式的系统,该接收光束位于对应的输入信号的方向上,该系统具有对应于输入信号的已知信号。 该系统包括多个M个通道,每个通道收集输入信号并产生用于输入信号的多个输入复数数据样本的L个以及用于已知信号的已知复数数据样本的多个L 。 该系统还包括用于形成接收束的几个数字波束成形装置。 数字波束成形装置中的每一个包括耦合到信道的装置,用于计算具有多个权重元素的M乘1权重向量W,每个加权元素对应于一个信道,所述计算装置包括用于对于W求解等式的装置 ,RW = C,其中R是M乘M系数矩阵,第i行和第j列中的元素是从由i系统矩阵生成的输入复数数据样本的相互关联而获得的值的估计, 与第j个信道的输入复数据样本进行通信,其中C是M×1常数向量,第i行中的元素是从输入的复数据样本的互相关中获得的值的估计值 由第i个信道与已知的复杂数据样本产生。 数字波束成形装置中的每一个还包括用于产生加权信号的乘法器,每个乘法器耦合到通道中的相应一个,并且通过由相应通道产生的输入复数数据样本将权重元素之一相乘,并且加法器 到乘法器,用于添加每个加权信号。
    • 10. 发明授权
    • Method and apparatus for monitoring the environment of a vessel
    • 监测船舶环境的方法和装置
    • US5333502A
    • 1994-08-02
    • US945788
    • 1992-09-16
    • William C. Clark, Jr.Richard J. JackoLee W. Burtner
    • William C. Clark, Jr.Richard J. JackoLee W. Burtner
    • G01N29/032G01N29/265G01N29/04
    • G01N29/032G01N29/265G01N2291/02416G01N2291/02818G01N2291/105G01N2291/2636G01N2291/267G01N2291/269
    • A method for monitoring the environment of a vessel provides a liquid (18) which may contain particles (20) in a vessel having containment walls (12), where a hollow member (26) such as a thin tube is inserted into the liquid near the containment walls, and the hollow member contains in it a robotic device (34), which can travel within the hollow member and which can emit and receive ultrasonic waves and electromagnetic fields, where both of the ultrasonic waves and electric fields can pass through the hollow member (26) to the containment walls (12), where the device: emits and receives low frequency ultrasonic waves to and from the containment walls (12) and high frequency ultrasonic waves to and from any particles (20), and emits electromagnetic fields to the containment walls (12) or their combination, where absorptions and reflections from the hollow member walls and the containment walls, and any particles present are measured and any current generated in the hollow member walls and the containment wall by the electromagnetic fields are measured, and then any differences are measured to determine flaws (24) in the hollow member and containment walls, and properties of any particles (20) in suspension.
    • 用于监测容器环境的方法提供了一种液体(18),其可以在容器内容纳有容器(12)中的颗粒(20),其中诸如细管的中空构件(26)插入液体附近 容纳壁和中空构件包括机器人装置(34),其可在中空构件内行进并且能够发射和接收超声波和电场,其中超声波和电场都可以通过 空心构件(26)连接到容纳壁(12),其中装置:向容纳壁(12)发射和从容纳壁(12)发射低频超声波,并将高频超声波接收到任何颗粒(20)和从任何颗粒(20)发射电磁 (12)或其组合的场地,其中测量来自中空构件壁和容纳壁以及存在的任何颗粒的吸收和反射,以及在中空构件壁中产生的任何电流 并且测量通过电磁场的容纳壁,然后测量任何差异以确定中空构件和容纳壁中的瑕疵(24)以及悬浮液中任何颗粒(20)的性质。