System and method for directing an adaptive antenna array
    3.
    发明授权
    System and method for directing an adaptive antenna array 有权
    用于引导自适应天线阵列的系统和方法

    公开(公告)号:US06275187B1

    公开(公告)日:2001-08-14

    申请号:US09227371

    申请日:1999-01-08

    IPC分类号: H01Q322

    摘要: A system for directing a receiving lobe of an adaptive antenna array toward an aircraft in flight includes an aircraft position vector calculator and an antenna weight vector generator. The aircraft position vector calculator receives aircraft position information from an aircraft tracking service and calculates, based upon the aircraft position information it receives, an aircraft position vector g. An antenna weight vector generator receives the aircraft position vector g from the aircraft position vector calculator and generates, based upon the aircraft position vector g, an antenna element weight vector w. The antenna weight vector w is applied to the elements of an adaptive antenna array to direct a receiving lobe of the array towards an aircraft in flight.

    摘要翻译: 用于将自适应天线阵列的接收波瓣引导到飞行中的飞行器的系统包括飞行器位置矢量计算器和天线加权矢量发生器。 飞行器位置矢量计算器从飞机跟踪服务器接收飞机位置信息,并且基于其接收到的飞行器位置信息来计算飞行器位置矢量g。 天线权重向量生成器从飞行器位置矢量计算器接收飞机位置矢量g,并且基于飞机位置向量g生成天线元重量向量w。 天线权重向量w被施加到自适应天线阵列的元件,以将阵列的接收波瓣引向飞行中的飞行器。

    Identification of an identifiable code sequence in a received signal by correlation with summed different-phase replicas of the sequence
    5.
    发明授权
    Identification of an identifiable code sequence in a received signal by correlation with summed different-phase replicas of the sequence 失效
    通过与序列的相加不相位复制相关来识别接收信号中的可识别码序列

    公开(公告)号:US06668012B1

    公开(公告)日:2003-12-23

    申请号:US09353655

    申请日:1999-07-15

    IPC分类号: H04L2730

    CPC分类号: H04B1/70753 H04B1/7077

    摘要: A receiver for a unique word sequence or a spreading code sequence includes a memory which is preloaded with all possible phases of the code. The sequence in the received signal is correlated, in parallel, with sums of various ones of the different phases of the code. Thus, the received code is correlated with all possible phases of a replica of its own code. Consequently, one of the sums will exhibit a correlation peak, which indicates that the desired phase of the code is included in that particular sum. The other sums will not exhibit a correlation peak, and are is discarded. The different phases in the one sum which displayed correlation are divided into new sums, each having fewer phases, and the correlation is again performed. Again, those sums exhibiting no correlation are discarded, and the sum exhibiting correlation is divided into sums of fewer codes.

    摘要翻译: 用于唯一字序列或扩展码序列的接收机包括预先加载有代码的所有可能相位的存储器。 并行地将接收信号中的序列与码的不同相位的和进行相加。 因此,接收到的代码与其自己的代码的副本的所有可能的相位相关联。 因此,总和中的一个将呈现相关峰值,这表示代码的期望相位被包括在该特定和中。 其他总和将不会呈现相关峰值,并被丢弃。 显示相关性的一个和中的不同相位被分成新的和,每个相位具有较少的相位,并且再次执行相关性。 再次,表示没有相关性的那些和被丢弃,并且显示相关性的和被划分为较少代码的和。

    Scalable spread-spectrum signal detection and acquisition processor
    6.
    发明授权
    Scalable spread-spectrum signal detection and acquisition processor 有权
    可扩展扩频信号检测和采集处理器

    公开(公告)号:US06621855B1

    公开(公告)日:2003-09-16

    申请号:US09318853

    申请日:1999-05-26

    IPC分类号: H04B169

    CPC分类号: H04B1/70752 H04B1/708

    摘要: A method allows determination of the presence of, the frequency of, and or the timing of a coded signal distributed in time, as for example a direct-sequence spread-spectrum signal or a signal having a coded header. According to the method, the received signal is correlated (16, 216, 316) with small sections of the spreading or header code, to produce partial correlations, as for example a 1024-chip spreading code is correlated in eight- or sixteen-chip portions. The result of each partial correlation is delayed (32, 232, 332/350) by an amount which results in temporal congruence or simultaneous occurrence of the partial correlations at a Doppler processor. The processor processes the simultaneous partial correlations, to produce signals which recur in the appropriate frequency bin at the recurrence rate of the spreading code. The frequency bin identifies the frequency of the received signals, and the time of the appearance of the signals at the bins is indicative of the time.

    摘要翻译: 一种方法允许确定在时间上分布的编码信号的存在,频率和/或定时,例如直接序列扩频信号或具有编码报头的信号。 根据该方法,接收信号与扩展或报头代码的小部分相关(16,216,316),以产生部分相关性,例如1024个码片扩展码在八或十六个芯片中相关 部分。 每个部分相关的结果被延迟(32,232,332/350)一个量,这导致在多普勒处理器处的部分相关性的时间一致性或同时发生。 处理器处理同时的部分相关,以产生以扩展码的复现速率在适当频率仓中重复的信号。 频率仓识别接收到的信号的频率,并且信号在信息箱出现的时间表示时间。

    Digital receiving system for dense environment of aircraft
    8.
    发明授权
    Digital receiving system for dense environment of aircraft 有权
    飞机密集环境数字接收系统

    公开(公告)号:US06792058B1

    公开(公告)日:2004-09-14

    申请号:US09614776

    申请日:2000-07-12

    IPC分类号: H04L102

    CPC分类号: G01S13/782

    摘要: The capacity of a Mode-S ADS-B surveillance radar system is increased by sectorizing the radar system by the use of a directional array of Mode-S, quarter wavelength, single element, stub antennas. The ensemble of signals from the array of Mode-S antenna elements is processed electronically. The signal processing/receiver architecture increases the capacity of the Mode-S ADS-B system to be capable of effectively functioning within a highly congested airspace.

    摘要翻译: 通过使用Mode-S,四分之一波长,单个元件,短截线天线的方向阵列对雷达系统进行分区,来增加Mode-S ADS-B监视雷达系统的容量。 来自Mode-S天线元件阵列的信号的集合是以电子方式处理的。 信号处理/接收机架构增加了Mode-S ADS-B系统能够在高度拥挤的空域内有效运行的能力。

    GHM aggregator
    9.
    发明授权
    GHM aggregator 有权
    GHM聚合器

    公开(公告)号:US06346875B1

    公开(公告)日:2002-02-12

    申请号:US09476821

    申请日:2000-01-03

    IPC分类号: H04M1104

    摘要: The invention provides an aggregator for use in connection with a power distribution network including a power line. The aggregator comprises a receiver, a controller, and a data outbound link. The receiver is coupled to the power line and is configured to receive signals comprising messages, for example geometric harmonic modulation (GHM) signals, from the power line. The controller is coupled to the receiver and to the data outbound link. The controller is configured to provide messages received by the receiver to the data outbound link for transmission by radio frequency energy to a destination, for example a power control station.

    摘要翻译: 本发明提供了一种用于与包括电力线的配电网络结合使用的聚合器。 聚合器包括接收器,控制器和数据出站链路。 接收器耦合到电力线并且被配置为从电力线接收包括消息的信号,例如几何谐波调制(GHM)信号。 控制器耦合到接收器和数据出站链路。 控制器被配置为将接收器接收的消息提供给数据出站链路,以通过射频能量传送到目的地,例如功率控制站。