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    USE OF PHASOR MEASUREMENT UNITS FOR DIFFERENTIAL GLOBAL NAVIGATION SATELLITE SYSTEMS (DGNSS)
    2.
    发明申请
    USE OF PHASOR MEASUREMENT UNITS FOR DIFFERENTIAL GLOBAL NAVIGATION SATELLITE SYSTEMS (DGNSS) 审中-公开
    用于差分全球导航卫星系统（DGNSS）的相位测量单元的使用

    公开(公告)号：US20110001664A1

    公开(公告)日：2011-01-06

    申请号：US12735971

    申请日：2009-02-18

    申请人： Dieter Olpp

    发明人： Dieter Olpp

    IPC分类号： G01S19/41

    CPC分类号： G01S19/07 ,  G01S3/8027 ,  G01S5/00 ,  G01S5/009

    摘要： A system determines and transmits correctional data of a global navigation satellite system (GNSS) which has a plurality of reference stations that can be used to determine the correction data by repeatedly measuring the position of the reference stations and comparing it to the previously determined exact position. The data determined in this manner are transmitted to a central station via a network and optionally processed in the central station. Such a system requires that every reference station be equipped with a GNSS receiver, but it is especially the connection to the central station that requires considerable financial resources for the establishment of the connection and both for the maintenance and operation of the network. An already existing network of the phasor measurement units of a power transmission network is therefore used.

    摘要翻译： 系统确定并传送具有多个参考站的全球导航卫星系统（GNSS）的校正数据，该多个参考站可用于通过重复测量参考站的位置并将其与先前确定的精确位置进行比较来确定校正数据 。 以这种方式确定的数据经由网络被发送到中心站并且可选地在中心站处理。 这样一个系统要求每个参考站都配备GNSS接收机，但它特别是与中心站的连接，它需要相当多的财务资源来建立连接以及网络的维护和运行。 因此，使用电力传输网络的相量测量单元的现有网络。

    Directional detection system
    3.
    发明授权
    Directional detection system 失效
    定向检测系统

    公开(公告)号：US3875553A

    公开(公告)日：1975-04-01

    申请号：US21280971

    申请日：1971-12-27

    申请人： US NAVY

    发明人： FORMICA VINCENT A ,  TOROK STEVE F ,  CARO JASPER

    IPC分类号： G01S3/802 ,  H03L7/12 ,  G01S3/80

    CPC分类号： G01S3/8027 ,  H03L7/12

    摘要： A directional detection system including a microphone assembly comprising an omnidirectional microphone and two orthogonal directional microphones. The omnidirectional microphone signal is connected to a phase lock loop comprising a sweep generator connected to drive a voltage controlled oscillator where the output signal of the oscillator is compared in a phase detector with the microphone signal. Upon registering a match and satisfying a predetermined signal-to-noise ratio the phase lock loop locks on to one spectral component of the microphone signal, the sweep is terminated and the loop tracks the signal by integrating the phase detector output signal and further controlling the oscillator therewith. The integrated detector output signal, or the loop error signal, is connected to an enable unit which produces an enable signal when the error signal is within a predetermined frequency band and exceeds a predetermined amplitude. The enable signal is connected to a plurality of narrow bandpass tracking filters set to pass a frequency determined by the oscillator, the filters being respectively connected to receive the omnidirectional and the directional microphone signals. The enable signal activates each tracking filter and the respective output signals thereof are connected to a frequency converter which converts the signals into respective sidebands. The sidebands are then compared in phase, generating an azimuth signal referenced against magnetic north.

    摘要翻译： 一种方向检测系统，包括包括全向麦克风和两个正交定向麦克风的麦克风组件。 全向麦克风信号连接到一个锁相环路，该锁相环包括连接到驱动压控振荡器的扫描发生器，其中振荡器的输出信号在相位检测器中与麦克风信号进行比较。 当登记匹配并满足预定的信噪比时，锁相环锁定到麦克风信号的一个频谱分量上，结束扫描，并且循环通过对相位检测器输出信号进行积分并进一步控制 与其振荡。 集成检测器输出信号或环路误差信号连接到使能单元，当使能误差信号在预定频带内并超过预定幅度时，其产生使能信号。 使能信号连接到多个窄带通跟踪滤波器，该滤波器设置为通过由振荡器确定的频率，滤波器分别被连接以接收全向和定向麦克风信号。 使能信号激活每个跟踪滤波器，并且其各自的输出信号连接到频率转换器，该变换器将信号转换成相应的边带。 然后将边带相位进行比较，产生以北磁参考的方位角信号。

    Multi-path signal enhancing apparatus
    5.
    发明授权
    Multi-path signal enhancing apparatus 失效
    多路径信号增强装置

    公开(公告)号：US4017859A

    公开(公告)日：1977-04-12

    申请号：US643047

    申请日：1975-12-22

    申请人： Herman Medwin

    发明人： Herman Medwin

    IPC分类号： G01S3/06 ,  G01S3/802 ,  G01S1/02 ,  H04B1/18

    CPC分类号： G01S3/8027 ,  G01S3/06 ,  Y10S367/901

    摘要： A plurality of processing channels each receive one of a number of direct d secondary signal energy rays. Each channel includes an A/D converter and computer the logic of which is controlled by a Fast Fourier Transform (FFT) algorithm to produce a plurality of data outputs each containing the amplitude and phase information of selected frequencies present in the channel input. To enhance signal detection and minimize signal strength fluctuations, each of the selected frequency outputs of each channel FFT is compared with each identical frequency output of other channel FFT's. Phase compensation means such as a shift register adjusts the phase relationship between all identical FFT outputs to permit their amplitudes to be constructively added. The individual subtotals so produced are totalled to provide an output representing the combined strength of the multi-path signal energy. In particular, medium interfaces such as an air-sea or air-ground interface, produce wide variations in the incoming direction of the signal energy to be detected.

    摘要翻译： 多个处理通道各自接收多个直接和次要信号能量射线中的一个。 每个通道包括A / D转换器和计算机，其逻辑由快速傅里叶变换（FFT）算法控制以产生多个数据输出，每个数据输出包含存在于通道输入中的选定频率的幅度和相位信息。 为了增强信号检测和最小化信号强度波动，将每个通道FFT的所选频率输出中的每一个与其他通道FFT的每个相同的频率输出进行比较。 诸如移位寄存器的相位补偿装置调整所有相同的FFT输出之间的相位关系，以允许它们的幅度被建设性地添加。 如此产生的各个小计总计为提供表示多径信号能量的组合强度的输出。 特别地，诸如空气 - 海洋或空气 - 接地界面的介质接口在待检测的信号能量的进入方向上产生宽泛的变化。

    Localization of an acoustic source
    7.
    发明授权
    Localization of an acoustic source 有权

    公开(公告)号：US12025720B2

    公开(公告)日：2024-07-02

    申请号：US17769540

    申请日：2020-10-05

    申请人： ORANGE

    发明人： Jérome Daniel ,  Srdan Kitic

    IPC分类号： G01S3/802 ,  H04R1/32

    CPC分类号： G01S3/8027 ,  H04R1/326 ,  H04R2430/20

    摘要： Processing sound signals acquired by a microphone, for example an ambisonic type, to locate a sound source in a space including at least one wall. A time-frequency transform is applied to the acquired signals, and, from the acquired signals, a velocity vector, complex with real and imaginary parts, is expressed in the frequency domain, wherein the velocity vector characterizes a composition between: a first acoustic path, direct between the source and the microphone, represented by a first vector; and a second acoustic path resulting from a reflection on the wall and represented by a second vector. The second path has a first delay with respect to the direct path. Depending on the first delay and the first and second vectors, a parameter is determined from among a direction of the direct path, a distance from the source to the microphone, and a distance from the source to said wall.

    Acoustic vector sensor
    8.
    发明授权
    Acoustic vector sensor 有权

    公开(公告)号：US11698433B2

    公开(公告)日：2023-07-11

    申请号：US17881341

    申请日：2022-08-04

    申请人： Raytheon BBN Technologies Corp.

    发明人： Jameson John Collins

    IPC分类号： G01S3/802 ,  G01N29/04 ,  G01N29/44 ,  G01S3/801 ,  G01S3/805

    CPC分类号： G01S3/8027 ,  G01N29/04 ,  G01N29/44 ,  G01S3/801 ,  G01S3/805

    摘要： An acoustic vector sensor and a method of detecting an acoustic vector are described. An object suspended in the fluid medium by a non-contact support structure. The object and the non-contact support structure are configured so that the object moves in response to any disturbance of the fluid by an acoustic wave; The non-contact support structure of the object comprises a plurality of solenoids that each produce a magnetic field in a fluid medium. A measurement measures movement of the object. A processing device determines an acoustic intensity vector of the acoustic wave based on the measured movement of the object.

    Acoustic direction finder
    9.
    发明授权
    Acoustic direction finder 失效
    声波取向器

    公开(公告)号：US4119942A

    公开(公告)日：1978-10-10

    申请号：US703280

    申请日：1976-07-07

    申请人： Harold M. Merklinger

    发明人： Harold M. Merklinger

    IPC分类号： G01S3/802 ,  G01S3/80

    CPC分类号： G01S3/8027 ,  Y10S367/901 ,  Y10S367/907

    摘要： An acoustic direction finder which identifies and displays bearing of an underwater received signal without the requirement of scanning the ambient space. The output signals of hydrophones at the ends of a pair of orthogonally located dipoles are applied to differential amplifiers to provide orthogonal dipole response characteristics, and an in-phase sum of the signal at the center of the dipoles is obtained. The differential amplifier output signals are integrated and the resultant signals are applied to individual multiplying means with the sum signal whereby a pair of X and Y coordinate deflection signals are obtained, which are applied to a display device.

    摘要翻译： 识别和显示水下接收信号的轴承而不需要扫描环境空间的声学取向器。 在一对正交偶极子的端部处的水听器的输出信号被施加到差分放大器以提供正交偶极子响应特性，并且获得偶极子中心处的信号的同相和。 差分放大器输出信号被积分，并且所得到的信号被加到具有和信号的各个乘法装置，从而获得一对施加到显示装置的X和Y坐标偏转信号。