公开(公告)号：US06771220B1

公开(公告)日：2004-08-03

申请号：US10402502

申请日：2003-03-28

申请人： Jeffrey M. Ashe ,  Richard C. Gaus, Jr.

发明人： Jeffrey M. Ashe ,  Richard C. Gaus, Jr.

IPC分类号： G01S502

CPC分类号： G01S19/21 ,  H04K3/22 ,  H04K2203/32

摘要： A method and computer program product are disclosed for locating signal jammers in a digital beamforming receiver having an antenna with a plurality of associated antenna orientations. An associated antenna gain value is calculated for a first of a sequence of the plurality of antenna orientations at each of a series of sample points. The antenna gain values from the first antenna orientation are evaluated for null spaces to obtain a set of candidate null locations. Associated antenna gain values are calculated and evaluated for subsequent antenna orientations only at the set of candidate null locations. Candidate null locations are eliminated from the set after any evaluation in which they are not found to be null spaces.

摘要翻译： 公开了一种方法和计算机程序产品，用于在具有多个相关联的天线方位的天线的数字波束成形接收机中定位信号干扰。 针对一系列采样点中的每一个的多个天线方向的序列中的第一个，计算相关联的天线增益值。 对第一天线方向的天线增益值进行零空格的评估，以获得一组候选零位置。 相关的天线增益值仅在候选零位置集合的后续天线取向被计算和评估。 在没有发现空值为空的任何评估之后，候选的零位置从集合中消除。

公开(公告)号：US06480151B2

公开(公告)日：2002-11-12

申请号：US10035676

申请日：2001-12-28

申请人： Khalil J. Maalouf ,  Jeffrey M. Ashe ,  Naofal Al-Dhahir

发明人： Khalil J. Maalouf ,  Jeffrey M. Ashe ,  Naofal Al-Dhahir

IPC分类号： H04B7185

CPC分类号： H04L25/03044 ,  H04L1/06 ,  H04L2025/03509

摘要： Interference in a GPS receiver in minimized while preserving the GPS satellite signal in a system having N antenna elements for receiving the interference signal and the satellite signal and multiple tapped delay line structures connected to the antenna elements for filtering the signals received by the antenna elements based a plurality of filter coefficients. The filter coefficients are determined such that the plurality of filter coefficients equals R{tilde over (xx)}−1C[CHR{tilde over (xx)}−1C]−1F wherein CH{tilde over (w)}=F, where {tilde over (w)} equals the plurality of filter coefficients, R{tilde over (xx)} equals a covariance matrix, and C and F are determined to preserve a frequency spectrum of the GPS satellite signal.

摘要翻译： 在具有用于接收干扰信号的N个天线元件和卫星信号的系统中保持GPS卫星信号以及连接到天线元件的多个抽头延迟线结构以便对由天线元件接收的信号进行滤波的同时在GPS接收机中的干扰最小化 多个滤波器系数。 滤波器系数被确定为使得多个滤波器系数等于Rxx-1C [CHRxx-1C] -1F，其中CHw = F，其中w等于多个滤波器系数，Rxx等于协方差矩阵，并且C和F被确定为 保存GPS卫星信号的频谱。

公开(公告)号：US06507315B2

公开(公告)日：2003-01-14

申请号：US09848063

申请日：2001-05-03

申请人： Daniel S. Purdy ,  Jeffrey M. Ashe ,  Erik Lier

发明人： Daniel S. Purdy ,  Jeffrey M. Ashe ,  Erik Lier

IPC分类号： H01Q302

CPC分类号： H01Q3/267 ,  H01Q25/00

摘要： A system and method to individually characterize all of the antenna elements or amplifiers in an array antenna system simultaneously, without the need to perform sequential measurements. A positioning device allows movement of the antenna with respect to a calibration probe or movement of the calibration probe with respect to the antenna. Multiple simultaneous control circuit encoding (CCE) measurements of each of the array elements in an array antenna are performed. A second aspect of the system and method involves changes in the level of signals transmitted by the amplifiers in the elements of an array antenna system in conjunction with the use of orthogonal coding measurements. Changes in the level of signals transmitted permits simultaneous measurement of the amplifier characteristics of each of the array elements in an array antenna.

摘要翻译： 一种同时独立地表征阵列天线系统中的所有天线元件或放大器的系统和方法，而不需要执行顺序测量。 定位装置允许天线相对于校准探针移动或相对于天线移动校准探针。 执行阵列天线中每个阵列元件的多个同步控制电路编码（CCE）测量。 该系统和方法的第二方面涉及阵列天线系统的元件中的放大器发送的信号的电平的变化以及正交编码测量的使用。 发射信号电平的变化允许同时测量阵列天线中每个阵列元件的放大器特性。