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    Electromagnetic spectrum management system
    1.
    发明授权
    Electromagnetic spectrum management system 有权

    公开(公告)号：US09794021B2

    公开(公告)日：2017-10-17

    申请号：US15414519

    申请日：2017-01-24

    Applicant: National Security Technologies, LLC

    Inventor： Douglas R. Seastrand

    IPC: H04B1/40 ,  H04K3/00 ,  H04B1/69 ,  H04B1/04

    CPC classification number: H04K3/825 ,  H04B1/0007 ,  H04B1/04 ,  H04B1/69 ,  H04B14/04 ,  H04B2001/0416 ,  H04B2201/70727 ,  H04K3/41 ,  H04K3/42 ,  H04K3/43

    Abstract: A system for transmitting a wireless countermeasure signal to disrupt third party communications is disclosed that include an antenna configured to receive wireless signals and transmit wireless counter measure signals such that the wireless countermeasure signals are responsive to the received wireless signals. A receiver processes the received wireless signals to create processed received signal data while a spectrum control module subtracts known source signal data from the processed received signal data to generate unknown source signal data. The unknown source signal data is based on unknown wireless signals, such as enemy signals. A transmitter is configured to process the unknown source signal data to create countermeasure signals and transmit a wireless countermeasure signal over the first antenna or a second antenna to thereby interfere with the unknown wireless signals.

    Interference suppression in a spread spectrum communications system using non-linear frequency domain excision
    3.
    发明授权
    Interference suppression in a spread spectrum communications system using non-linear frequency domain excision 失效
    使用非线性频域切除的扩频通信系统中的干扰抑制

    公开(公告)号：US06868114B2

    公开(公告)日：2005-03-15

    申请号：US09919121

    申请日：2001-07-30

    Applicant: Theodore Bially ,  Paul F. McKenzie

    Inventor： Theodore Bially ,  Paul F. McKenzie

    IPC: G06F17/14 ,  H04B1/71 ,  H04K1/00 ,  H04B1/69

    CPC classification number: H04B1/7102 ,  H04B2201/70727

    Abstract: In a frequency-domain excision system for a wide band receiver, a window function is applied to blocks of received signal samples and a transform function is applied to the windowed blocks. Each block of frequency-domain coefficients from the transform function is morphologically filtered to generate a threshold function representing an estimate of the spectrum of the desired wide band signal, and a non-linear gain function is applied to the coefficients. The gain function has a fixed-gain region for input values less than a threshold value from the threshold function, an excision region for input values greater than a multiple of the threshold value, and a soft limiting region between the fixed-gain region and the excision region. The inverse transform is performed on the excised blocks of coefficients, and an overlap-eliminating central portion of the inverse of the window function is applied to the resulting blocks of signal samples.

    Abstract translation: 在用于宽带接收机的频域切除系统中，将窗函数应用于接收信号样本的块，并将变换函数应用于窗口块。 来自变换函数的每个频域系数块被形态滤波以产生表示所需宽带信号的频谱的估计的阈值函数，并且将非线性增益函数应用于系数。 增益函数具有用于小于阈值函数的阈值的输入值的固定增益区域，用于大于阈值的倍数的输入值的切除区域，以及固定增益区域与固定增益区域之间的软限制区域 切除区。 对所切除的系数块执行逆变换，并且将窗函数的逆的重叠消除中心部分应用于所得到的信号样本块。

    Electromagnetic spectrum management system
    4.
    发明授权
    Electromagnetic spectrum management system 有权
    电磁频谱管理系统

    公开(公告)号：US09559803B2

    公开(公告)日：2017-01-31

    申请号：US15090472

    申请日：2016-04-04

    Applicant: National Security Technologies, LLC

    Inventor： Douglas R. Seastrand

    IPC: H04B1/40 ,  H04K3/00 ,  H04B14/04 ,  H04B1/00

    CPC classification number: H04K3/825 ,  H04B1/0007 ,  H04B1/04 ,  H04B1/69 ,  H04B14/04 ,  H04B2001/0416 ,  H04B2201/70727 ,  H04K3/41 ,  H04K3/42 ,  H04K3/43

    Abstract: A system for transmitting a wireless countermeasure signal to disrupt third party communications is disclosed that include an antenna configured to receive wireless signals and transmit wireless counter measure signals such that the wireless countermeasure signals are responsive to the received wireless signals. A receiver processes the received wireless signals to create processed received signal data while a spectrum control module subtracts known source signal data from the processed received signal data to generate unknown source signal data. The unknown source signal data is based on unknown wireless signals, such as enemy signals. A transmitter is configured to process the unknown source signal data to create countermeasure signals and transmit a wireless countermeasure signal over the first antenna or a second antenna to thereby interfere with the unknown wireless signals.

    Abstract translation: 公开了一种用于发送无线对策信号以破坏第三方通信的系统，其包括被配置为接收无线信号并发送无线对抗测量信号的天线，使得无线对策信号响应于所接收的无线信号。 接收机处理所接收的无线信号以产生经处理的接收信号数据，而频谱控制模块从经处理的接收信号数据中减去已知的源信号数据，以产生未知的源信号数据。 未知的源信号数据是基于未知的无线信号，如敌方信号。 发射机被配置为处理未知源信号数据以产生对策信号，并通过第一天线或第二天线发送无线对抗信号，从而干扰未知的无线信号。

    Interference suppression in a spread spectrum communications system using non-linear frequency domain excision
    6.
    发明申请
    Interference suppression in a spread spectrum communications system using non-linear frequency domain excision 失效
    使用非线性频域切除的扩频通信系统中的干扰抑制

    公开(公告)号：US20020094022A1

    公开(公告)日：2002-07-18

    申请号：US09919121

    申请日：2001-07-30

    Applicant: THE TITAN CORPORATION

    Inventor： Theodore Bially ,  Paul F. McKenzie

    IPC: H04K001/00

    CPC classification number: H04B1/7102 ,  H04B2201/70727

    Abstract: In a frequency-domain excision system for a wide band receiver, a window function is applied to blocks of received signal samples and a transform function is applied to the windowed blocks. Each block of frequency-domain coefficients from the transform function is morphologically filtered to generate a threshold function representing an estimate of the spectrum of the desired wide band signal, and a non-linear gain function is applied to the coefficients. The gain function has a fixed-gain region for input values less than a threshold value from the threshold function, an excision region for input values greater than a multiple of the threshold value, and a soft limiting region between the fixed-gain region and the excision region. The inverse transform is performed on the excised blocks of coefficients, and an overlap-eliminating central portion of the inverse of the window function is applied to the resulting blocks of signal samples.

    Abstract translation: 在用于宽带接收机的频域切除系统中，将窗函数应用于接收信号样本的块，并将变换函数应用于窗口块。 来自变换函数的每个频域系数块被形态滤波以产生表示所需宽带信号的频谱的估计的阈值函数，并且将非线性增益函数应用于系数。 增益函数具有用于小于阈值函数的阈值的输入值的固定增益区域，用于大于阈值的倍数的输入值的切除区域，以及固定增益区域与固定增益区域之间的软限制区域 切除区。 对所切除的系数块执行逆变换，并且将窗函数的逆的重叠消除中心部分应用于所得到的信号样本块。

    Interference suppressing OFDM system for wireless communications
    8.
    发明授权
    Interference suppressing OFDM system for wireless communications 有权
    用于无线通信的干扰抑制OFDM系统

    公开(公告)号：US08711674B2

    公开(公告)日：2014-04-29

    申请号：US13711336

    申请日：2012-12-11

    Applicant: AT&T Corp.

    Inventor： Diakoumis Gerakoulis

    IPC: H04J11/00

    CPC classification number: H04L27/265 ,  H04B1/109 ,  H04B1/71 ,  H04B1/7102 ,  H04B2201/70727 ,  H04B2201/7097 ,  H04L5/0016 ,  H04L27/2607 ,  H04L27/2627 ,  H04L27/2634 ,  H04L27/2657 ,  H04L27/2662

    Abstract: An IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises an IS-OFDM transmitter and an IS-OFDM receiver, wherein a transmitted signal comprises a plurality of subcarriers, and further wherein each subcarrier contains more than one and potentially all symbols transmitted in a given frame. The IS-OFDM transmitted signal is at a data rate that is equal to the data rate of the input data stream via the use of P/S converters.

    Abstract translation: 用于抑制窄带干扰的点对点无线通信的IS-OFDM系统包括IS-OFDM发射机和IS-OFDM接收机，其中发射信号包括多个子载波，并且其中每个子载波包含多于 一个和潜在的所有符号在给定的帧中传输。 IS-OFDM发送信号的数据速率等于通过使用P / S转换器的输入数据流的数据速率。

    INTERFERENCE SUPPRESSING OFDM SYSTEM FOR WIRELESS COMMUNICATIONS
    10.
    发明申请
    INTERFERENCE SUPPRESSING OFDM SYSTEM FOR WIRELESS COMMUNICATIONS 失效
    用于无线通信的干扰抑制OFDM系统

    公开(公告)号：US20110243195A1

    公开(公告)日：2011-10-06

    申请号：US13102887

    申请日：2011-05-06

    Applicant: Diakoumis Gerakoulis

    Inventor： Diakoumis Gerakoulis

    IPC: H04B1/707

    CPC classification number: H04L27/265 ,  H04B1/109 ,  H04B1/71 ,  H04B1/7102 ,  H04B2201/70727 ,  H04B2201/7097 ,  H04L5/0016 ,  H04L27/2607 ,  H04L27/2627 ,  H04L27/2634 ,  H04L27/2657 ,  H04L27/2662

    Abstract: An IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises an IS-OFDM transmitter and an IS-OFDM receiver, wherein a transmitted signal comprises a plurality of subcarriers, and further wherein each subcarrier contains more than one and potentially all symbols transmitted in a given frame. The IS-OFDM transmitted signal is at a data rate that is equal to the data rate of the input data stream via the use of PIS converters.

    Abstract translation: 用于抑制窄带干扰的点对点无线通信的IS-OFDM系统包括IS-OFDM发射机和IS-OFDM接收机，其中发射信号包括多个子载波，并且其中每个子载波包含多于 一个和潜在的所有符号在给定的帧中传输。 IS-OFDM发送信号的数据速率等于通过使用PIS转换器的输入数据流的数据速率。

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