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    • 64. 发明专利
    • System and method for wideband pre-detection signal processing for passive coherent location applications
    • 用于无源相干位置应用的宽带预检测信号处理的系统和方法
    • JP2010044081A
    • 2010-02-25
    • JP2009230802
    • 2009-10-02
    • Lockheed Martin Corpロッキード・マーティン・コーポレイションLockheed Martin Corporation
    • BAUGH KEVIN WBENNER ROBERT H
    • G01S13/46G01S7/292G01S13/00G01S13/02G01S13/87
    • G01S7/023G01S5/0273G01S7/292G01S13/003G01S13/878G01S2013/0245G01S2013/462
    • PROBLEM TO BE SOLVED: To provide a system and method for processing a wideband signal detected in advance for PCL applications. SOLUTION: The method includes receiving an input signal, implementing a transformation operation on the input signal, compensating the input signal for channel distortion, demodulating and forming complex-valued representations. The reference signal and target signal are estimated from the demodulated signal. To reduce part of the reference signal within this target signal, the reference signal is adaptively-filtered depending on target signal and then combined with the target signal to reduce a part of the reference signal. Reverse conversion operation is done for these target signal and reference signal to form plural target beams for the output target signal. For each of these target beams, two or more thinned lag products are formed. Also for the reference signal, two or more thinned lag products are formed. Cross Ambiguity Function is estimated for each of those plural target beams. Then the above two or more thinned lag products for the reference signal are used to estimate Auto Ambiguity Function for the reference signal. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供用于处理PCL应用预先检测到的宽带信号的系统和方法。 解决方案:该方法包括接收输入信号,对输入信号进行变换操作,补偿输入信号以进行信道失真,解调和形成复值表示。 从解调信号估计参考信号和目标信号。 为了减少该目标信号中的参考信号的一部分,参考信号根据目标信号进行自适应滤波,然后与目标信号组合以减少参考信号的一部分。 对这些目标信号和参考信号进行反向转换操作,以形成用于输出目标信号的多个目标光束。 对于这些目标光束中的每一个,形成两个或更多个变薄的滞后产物。 另外对于参考信号,形成两个或更多个变薄滞后产物。 针对这些多个目标光束中的每一个估计交叉模糊度函数。 然后使用上述两个或更多个用于参考信号的减薄滞后产品来估计参考信号的自动模糊函数。 版权所有(C)2010,JPO&INPIT
    • 66. 发明专利
    • System and method for correlating measuring area data in passive coherent search application
    • 无源相关搜索应用中相关测量区域数据的系统和方法
    • JP2008122407A
    • 2008-05-29
    • JP2007337686
    • 2007-12-27
    • Lockheed Martin Corpロッキード・マーティン・コーポレイションLockheed Martin Corporation
    • BENNER ROBERT HSAWYER JOSEPH
    • G01S13/66G01S5/06G01S13/00G01S13/02G01S13/46G01S13/72
    • G01S13/003G01S5/06G01S13/0209G01S13/723
    • PROBLEM TO BE SOLVED: To provide a system and a method for correlating a measuring area data, in a passive coherent search system. SOLUTION: A detection report is correlated with a target signal received, in passive coherent search system. A measured value of the detection report is correlated with data of the target signal. A line track state estimation function part correlates a new detection report with a line track, and estimates an updated state of the line track. A signal type is determined. A Kalman filter is selected as to be measured value in response to a signal type. Error in the measured value of the detection report is calculated, in response to the Kalman filter. The detection report is selected as being correlated with the line tracks in response to the error. The line track can be composed or finished during an updating period, according to a prescribed reference. Furthermore, a new line track is initialized, when a new target is detected. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种在被动一致搜索系统中对测量区域数据进行关联的系统和方法。 解决方案:在被动一致搜索系统中,检测报告与接收到的目标信号相关。 检测报告的测量值与目标信号的数据相关。 线路状态估计功能部件将新的检测报告与线路轨迹相关联,并且估计线路轨迹的更新状态。 确定信号类型。 选择卡尔曼滤波器作为响应于信号类型的测量值。 响应卡尔曼滤波器计算检测报告的测量值误差。 检测报告被选择为响应于错误与线路轨迹相关联。 根据规定的参考,线路可以在更新期间组成或完成。 此外,当检测到新的目标时,新的线路轨迹被初始化。 版权所有(C)2008,JPO&INPIT