Method of processing received digitized signals and mobile radio communication terminal device

    公开(公告)号:US09967807B2

    公开(公告)日:2018-05-08

    申请号:US14566736

    申请日:2014-12-11

    摘要: A method of processing a plurality of received digitized signals may include determining a plurality of cross-correlation coefficients for the plurality of received digitized signals; forming a cross-correlation coefficient vector including the plurality of cross-correlation coefficients; and determining an evaluation value for at least some of the plurality of cross-correlation coefficients. The determining the evaluation value may include: pre-selecting a predefined number of cross-correlation coefficients from the cross-correlation coefficient vector and deleting the pre-selected number of cross-correlation coefficients from the cross-correlation coefficient vector; after the pre-selection, determining an averaging value using at least one of the non-preselected cross-correlation coefficients of the cross-correlation coefficient vector; and determining the evaluation values based on the respective value of the pre-selected cross-correlation coefficient and the averaging value. The method may further include selecting one or more cross-correlation coefficients based on the determined evaluation values; and further processing based on the selected one or more cross-correlation coefficients.

    Radar system
    44.
    发明授权
    Radar system 有权
    雷达系统

    公开(公告)号:US08362944B2

    公开(公告)日:2013-01-29

    申请号:US12504933

    申请日:2009-07-17

    摘要: A radar system is disclosed for forming a scanning receive beam from signals received by a phased array having a plurality of sub arrays. An exemplary radar system includes a plurality of phase units each configured to receive a signal from one or more sub arrays. Each phase unit includes a waveform generator configured to generate an analog waveform having a frequency corresponding to a time-varying phase shift. Each waveform generator is arranged to digitally generate the analog waveform, and output a comparison of the received signal with the waveform, incorporating the time-varying phase shift. The system further includes a combining unit configured to combine the outputs from the plurality of phase units to form a scanning receive beam.

    摘要翻译: 公开了用于由具有多个子阵列的相控阵列接收的信号形成扫描接收波束的雷达系统。 示例性雷达系统包括多个相位单元,每个相位单元被配置为从一个或多个子阵列接收信号。 每个相位单元包括波形发生器,其被配置为产生具有对应于时变相移的频率的模拟波形。 每个波形发生器被布置成数字地产生模拟波形,并且输出接收信号与波形的比较,并结合时变相移。 该系统还包括组合单元,其被配置为组合来自多个相位单元的输出以形成扫描接收波束。

    Adjustable-tilt antenna
    46.
    发明授权
    Adjustable-tilt antenna 失效
    可调倾斜天线

    公开(公告)号:US06366237B1

    公开(公告)日:2002-04-02

    申请号:US09304385

    申请日:1999-05-04

    IPC分类号: H01Q326

    摘要: The present invention lies in the field of antennas for land cellular radio communications networks, and it relates to a remote control method for adjusting the tilt of the radiation pattern relative to the horizontal of the antennas of a base station. The invention also relates to an antenna fitted with means for adjusting its tilt and to a system for remote control of the tilt. The technical field of the invention is active antennas (also known as “smart” antennas or as “adaptive” antennas) for networks for communicating with mobile telecommunications terminals. According to the invention, an antenna for a land cellular telecommunications network, the antenna comprises radiating elements and feeder means for feeding said radiating elements with radio frequency signals; said feeder means include electronic phase shifter means for obtaining phase shifts between said signals so as to enable the tilt of the radiation pattern in a vertical plane to be adjusted remotely.

    摘要翻译: 本发明在于用于陆地蜂窝无线电通信网络的天线领域,并且涉及一种用于调整辐射图相对于基站的天线的水平的倾斜的遥控方法。 本发明还涉及一种天线,其配备有用于调节其倾斜的装置和用于远程控制倾斜的系统。 本发明的技术领域是用于与移动电信终端通信的网络的有源天线(也称为“智能”天线或“自适应”天线)。 根据本发明,一种用于陆地蜂窝电信网络的天线,天线包括用于向射频单元馈送射频信号的辐射元件和馈线装置; 所述馈送装置包括用于获得所述信号之间的相移的电子移相器装置,以便能够远程地调整垂直平面中的辐射图案的倾斜。

    Radar system
    47.
    发明授权
    Radar system 失效
    雷达系统

    公开(公告)号:US5087917A

    公开(公告)日:1992-02-11

    申请号:US584157

    申请日:1990-09-18

    IPC分类号: G01S13/48 H01Q3/26 H01Q3/38

    CPC分类号: G01S13/48 H01Q3/26 H01Q3/385

    摘要: A radar system having a phased array antenna for transmission and a digital beam forming antenna for reception for observing a plurality of targets by transmitting transmission pulses to the respective targets comprises a subtraction control circuit, a transmission timing control circuit and a transmission beam direction control circuit. The substraction control circuit calculates a required number of transmission pulses (beams) to be transmitted for each of transmission cycles in accordance with detected Doppler frequencies of the targets, so as not to cause ambiguity on the detected Doppler frequencies, and determines a beam direction for each of transmission beams. The timing control circuit and beam direction control circuit control transmission timing and direction of the beams.

    摘要翻译: 具有用于传输的相控阵天线的雷达系统和用于通过向各个目标发送传输脉冲来观察多个目标的用于接收的数字波束形成天线包括减法控制电路,发送定时控制电路和发送波束方向控制电路 。 减法控制电路根据检测到的目标多普勒频率,计算要发送的每个发送周期的发送脉冲(波束)的数量,以便不会对检测到的多普勒频率造成歧义,并且确定波束方向 每个传输光束。 定时控制电路和光束方向控制电路控制光束的传输定时和方向。

    Control data transfer system for phase shifters in antenna
    48.
    发明授权
    Control data transfer system for phase shifters in antenna 失效
    用于天线移相器的控制数据传输系统

    公开(公告)号:US5038148A

    公开(公告)日:1991-08-06

    申请号:US534178

    申请日:1990-06-06

    IPC分类号: H01Q3/36 H01Q3/26 H01Q3/38

    CPC分类号: H01Q3/385

    摘要: An antenna control data transfer system having antenna elements, phase shifters changing the phase of electromagnetic waves transmitted or received by the antenna elements, and phase shifter control circuits controlling the phase shifters, wherein each of the phase shifter control circuits includes an address holding circuit storing an address for identifying the phase shifter control circuit, a data input circuit for receiving data, and a data output control circuit for selectively outputting the received data or inhibiting the data output in accordance with a control signal from a signal processor.

    摘要翻译: 具有天线元件的天线控制数据传送系统,改变由天线元件发送或接收的电磁波的相位的移相器,以及控制移相器的移相器控制电路,其中每个移相器控制电路包括存储 用于识别移相器控制电路的地址,用于接收数据的数据输入电路,以及用于根据来自信号处理器的控制信号有选择地输出接收数据或禁止数据输出的数据输出控制电路。

    Programmable beam transform and beam steering control system for a
phased array radar antenna
    49.
    发明授权
    Programmable beam transform and beam steering control system for a phased array radar antenna 失效
    用于相控阵雷达天线的可编程波束变换和波束转向控制系统

    公开(公告)号:US5008680A

    公开(公告)日:1991-04-16

    申请号:US187804

    申请日:1988-04-29

    IPC分类号: H01Q3/26 H01Q3/38

    CPC分类号: H01Q3/385 H01Q3/26

    摘要: A programmable beam transform system is disclosed for performing both beam steering and beam shaping operations in a phased array antenna. A programmable beam transform control circuit is responsive to a plurality of input signals for selectively generating and applying a plurality of control signals to each intelligent phase shift control circuit in an array of phase shift control circuits/phase shifters/antenna elements. Each phase shift control circuit simultaneously modifies the plurality of control signals applied thereto as a function of its internally-stored data to develop its own phase shift command signal which is used by its associated phase shifter to phase shift that portion of the total energy applied thereto. On transmit, the phase-shifted energy outputs from the phase shifters in the array are then respectively transmitted by the associated antenna elements in the array to form the desired beam pattern at the desired beam position; and on receive the complementary function occurs.

    摘要翻译: 公开了一种用于在相控阵天线中执行波束转向和波束整形操作的可编程波束变换系统。 可编程波束变换控制电路响应于多个输入信号,用于在相移控制电路/移相器/天线元件阵列中的每个智能移相控制电路中选择性地产生并施加多个控制信号。 每个相移控制电路根据其内部存储的数据同时修改施加到其上的多个控制信号,以产生其自身的相移指令信号,该相移指令信号由其相关联的移相器用于将施加到其上的总能量的那部分相移 。 在发射时,阵列中的移相器的相移能量输出然后分别由阵列中的相关联的天线元件传输,以在期望的波束位置处形成期望的波束图案; 并且接收到互补功能发生。

    Frequency agile radar system
    50.
    发明授权
    Frequency agile radar system 失效
    频率敏捷雷达系统

    公开(公告)号:US4675678A

    公开(公告)日:1987-06-23

    申请号:US627556

    申请日:1984-07-03

    摘要: A frequency agile radar system allows tracking of noncooperative targets with high accuracy. The system is particularly useful in an automatic landing system aboard an aircraft carrier. The radar employs an electronically steered planar array antenna system in which a symmetrical pencil beam of 1.degree. beamwidth is steered in 1/2.degree. steps in a raster scan. A space-stabilized acquisition window allows target acquisition, and target scanning modes are chosen as a function of target range. At far range, target scan is effected by those four beam raster positions which bracket the target whereas when the target is at near range where its cross section is larger than a single beamwidth, the raster is "ballooned" to paint or cover the target fully. The computed track of the target provides a continuing update of autopilot command signals radioed to the target to bring it to and hold it on a selected glideslope which effects the automatic landing.

    摘要翻译: 频率敏捷雷达系统允许以高精度跟踪非目标目标。 该系统在航空母舰的自动着陆系统中特别有用。 雷达采用电子导向平面阵列天线系统,其中1光束宽度的对称笔形光束在光栅扫描中以1/2度的步长转向。 空间稳定的采集窗口允许目标采集,并且目标扫描模式被选择为目标范围的函数。 在远距离范围内,目标扫描受到包围目标的四个光束光栅位置的影响,而当目标在其横截面大于单个波束宽度的近距离范围内时,光栅被“气球化”以完全绘制或覆盖目标 。 目标的计算轨迹提供了对目标无线电发射的自动驾驶仪命令信号的持续更新,以使其进入并保持在影响自动着陆的所选择的滑坡上。