会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明申请
    • METHOD FOR GENERARING A NEW PN SEQUENCE FOR BETTER TIMING ACQUISITION
    • 一种用于更好的获取时间的新PN序列的方法
    • WO2007123836A1
    • 2007-11-01
    • PCT/US2007/008888
    • 2007-04-09
    • THE BOEING COMPANYRAY, Gary, A.BAKER, James, B.
    • RAY, Gary, A.BAKER, James, B.
    • H04L7/04H04B1/707H04J13/00
    • H04B1/7077H04B1/70754
    • A method of processing a timing synchronization signal includes selecting an initial sequence of complex numbers and modifying the initial sequence based upon a metric applied to the autocorrelation function to enhance its autocorrelation properties within a predetermined window about the main autocorrelation peak determined by the timing uncertainty of the system. This two- step optimization process produces a new complex sequence used for. timing acquisition. It is applied by transmitting the sequence through a medium and correlating the received signal against a known error-free sequence. Only correlation within the window of the bounded timing uncertainty is performed, thus saving valuable computational cycles. Also, because the sidelobe levels of the autocorrelated function are significantly lower within the timing uncertainty window than the sidelobe levels of a non-optimized autocorrelation function of a signal, the likelihood of finding a peak for the wrong timing signal is greatly reduced.
    • 一种处理定时同步信号的方法包括:选择复数的初始序列,并且基于应用于自相关函数的度量来修改初始序列,以增强其在预定窗口内的关于由自动相关函数确定的主自相关峰值的自相关特性, 系统。 这个两步优化过程产生用于的新的复杂序列。 定时采集。 通过通过介质发送序列并将接收的信号与已知的无错误序列相关联来应用。 仅在有界定时不确定性的窗口内进行相关,从而节省了有价值的计算周期。 此外,由于在时序不确定性窗口内的自相关函数的旁瓣电平比信号的未优化的自相关函数的旁瓣电平显着更低,所以发现错误定时信号的峰值的可能性大大降低。
    • 3. 发明申请
    • SELF CALIBRATING CONFORMAL PHASED ARRAY
    • 自校准一致的定时阵列
    • WO2011002934A1
    • 2011-01-06
    • PCT/US2010/040674
    • 2010-06-30
    • THE BOEING COMPANYRAY, Gary A.WORL, Robert T.
    • RAY, Gary A.WORL, Robert T.
    • H01Q3/26
    • H01Q3/267
    • A system and method for a self calibrating conformal phased array are disclosed involving a plurality of transmit/receive elements; a plurality of embedded, calibration transmit/receive elements scattered across the array; and at least one back-end processor. The calibration transmit/receive elements are used to track any physical calibration transmit/receive element's relative position change caused by array flexure. In one or more embodiments, each of the calibration transmit/receive elements transmit a tone using a small antenna, and the other calibration transmit/receive elements receive the tone using small antennas. The calibration transmit/receive elements that receive the tone measure the phase of the received tone. At least one back-end processor uses the measured phases to determine differential phases from a phase calibration table. Also, at least one back-end processor uses the differential phases to compute a change in apparent location of each transmitting calibration transmit/receive element.
    • 公开了一种用于自校准保形相控阵列的系统和方法,其涉及多个发射/接收元件; 多个嵌入式校准发射/接收元件,分散在阵列上; 和至少一个后端处理器。 校准发射/接收元件用于跟踪由阵列挠曲引起的任何物理校准发射/接收元件的相对位置变化。 在一个或多个实施例中,每个校准发射/接收元件使用小天线发射音调,而其它校准发射/接收元件使用小天线接收音调。 接收音调的校准发送/接收元件测量接收到的音调的相位。 至少一个后端处理器使用测量的相位来确定相位校准表的差分相位。 此外,至少一个后端处理器使用差分相位来计算每个发送校准发送/接收元件的表观位置的变化。