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    METHOD AND SYSTEM OF REACTIVE INTERFERER DETECTION
    1.
    发明申请
    METHOD AND SYSTEM OF REACTIVE INTERFERER DETECTION 审中-公开

    公开(公告)号：US20170139034A1

    公开(公告)日：2017-05-18

    申请号：US15352697

    申请日：2016-11-16

    申请人： BAE SYSTEMS Information and Electronic Systems Integration Inc.

    发明人： Matthew C Bromberg ,  Dianne E Egnor

    IPC分类号： G01S7/02

    CPC分类号： H04K3/224 ,  H04K3/28 ,  H04K3/45 ,  H04K3/46

    摘要： A method and system of reliably detecting a reactive jamming attack and estimating the jammer's listening interval for exploitation by a communication system comprises channelizing one or more signals of interest (SOI), channelizing one or more signals of unknown origin (SUO), identifying frequency support patterns for the SOI and SUO using Bayes thresholds, comparing SOI and SUO detection map histories, and determining a percent match, where a match percentage above a specified minimum indicates a reactive attack. Edge detection can be used to enhance jammer support. Embodiments further detect reactive jammer adaptation to changes in the SOI's frequency support. Embodiments include detectors that are insensitive to jammer modulation and/or signal type. A jammer reaction delay and/or size and periodicity of receive window can be detected. Embodiments determine if a jammer is copying and retransmitting the SOI's waveform(s), and/or if the jammer is anticipatory.

    Masker sound generation apparatus and program
    4.
    发明授权
    Masker sound generation apparatus and program 有权
    Masker声音发生装置和程序

    公开(公告)号：US08861742B2

    公开(公告)日：2014-10-14

    申请号：US13013634

    申请日：2011-01-25

    申请人： Mai Koike ,  Yasushi Shimizu ,  Masato Hata ,  Takashi Yamakawa

    发明人： Mai Koike ,  Yasushi Shimizu ,  Masato Hata ,  Takashi Yamakawa

    IPC分类号： H04R3/02 ,  G01L21/04

    CPC分类号： G01L21/04 ,  G10K11/175 ,  G10L21/04 ,  H04K1/06 ,  H04K3/45 ,  H04K3/46 ,  H04K3/825 ,  H04K2203/12

    摘要： In a masker sound generation apparatus, an acquisition part acquires a sound signal, and a generation part generates a masker sound signal based on the acquired sound signal. Specifically, the generation part divides the sound signal acquired by the acquisition part into a plurality of sections each having a predetermined time length, then repeats a sorting process of sorting the divided sections as a process of changing the sequence of arrangement of the sound signal, and alters a manner of sorting the sections each time the sorting process is repeated.

    摘要翻译： 在遮罩声产生装置中，获取部获取声音信号，生成部基于取得的声音信号生成遮蔽声音信号。 具体地，生成部将由采集部获取的声音信号分割成具有预定时间长度的多个部分，然后重复对分割部分进行排序处理，作为改变声音信号的排列顺序的处理， 并且在每次重复排序过程时改变对这些部分进行排序的方式。

    Wireless communication jamming using signal delay technology
    6.
    发明授权
    Wireless communication jamming using signal delay technology 有权
    使用信号延迟技术的无线通信干扰

    公开(公告)号：US08543053B1

    公开(公告)日：2013-09-24

    申请号：US13227991

    申请日：2011-09-08

    申请人： Howard Melamed ,  Daniel Fitzsimmons

    发明人： Howard Melamed ,  Daniel Fitzsimmons

    IPC分类号： H04K3/00

    CPC分类号： H04K3/43 ,  H04K3/42 ,  H04K3/45 ,  H04K3/46 ,  H04K3/65 ,  H04K2203/16 ,  H04K2203/32

    摘要： A device and method for jamming wireless communication devices where the jamming signal is derived from the downlink signal of the base station and processed with a time delay sufficient length as to prevent the base station receiver from correctly processing the responding uplink signal from the targeted wireless communications device. Such wireless communication jamming device can be used by law enforcement and authorized government entities to block the operation of wireless communication devices such as cell phones within a target area.

    摘要翻译： 一种用于干扰无线通信设备的设备和方法，其中干扰信号从基站的下行链路信号导出并以足够长的时间延迟进行处理，以防止基站接收机从目标无线通信中正确处理响应的上行链路信号 设备。 这种无线通信干扰装置可以由执法机构和授权的政府实体使用来阻止目标区域内的诸如手机的无线通信设备的操作。

    METHOD OF SECURING A WIRELESS COMMUNICATION, RECEIVER DEVICE AND COMMUNICATION SYSTEM IMPLEMENTING THIS METHOD
    7.
    发明申请
    METHOD OF SECURING A WIRELESS COMMUNICATION, RECEIVER DEVICE AND COMMUNICATION SYSTEM IMPLEMENTING THIS METHOD 有权
    无线通信的方法，接收设备和通信系统的实现方法

    公开(公告)号：US20130078906A1

    公开(公告)日：2013-03-28

    申请号：US13701661

    申请日：2011-05-31

    申请人： Sana Ben Hamida ,  Jean-Benoit Pierrot ,  Olivier Savry ,  Pierre-Henri Thevenon ,  Claude Castelluccia

    发明人： Sana Ben Hamida ,  Jean-Benoit Pierrot ,  Olivier Savry ,  Pierre-Henri Thevenon ,  Claude Castelluccia

    IPC分类号： H04B17/02

    CPC分类号： H04B17/02 ,  G07C2009/00555 ,  H04B17/21 ,  H04B17/345 ,  H04B17/40 ,  H04K3/22 ,  H04K3/46 ,  H04K3/60 ,  H04L63/1466 ,  H04W12/12 ,  H04W76/14 ,  H04W84/047 ,  H04W84/18

    摘要： A method for securing a wireless communication between a transmitter and a receiver includes: reception of a signal by the receiver; extraction by the receiver of at least one noise parameter of this signal received; comparison of the extracted noise parameter with at least one corresponding reference noise parameter stored in a memory in the receiver; decision on the presence or absence of a relay device between the transmitter and the receiver according to the result of this comparison; a preliminary calibration of the receiver, wherein: the receiver receives a signal resulting from a direct communication with the transmitter without intervention of a relay device, the receiver extracts at least one noise parameter from the signal received, and the receiver stores this noise parameter in the memory as a reference noise parameter characteristic of a direct communication without a relay device between the transmitter and the receiver.

    摘要翻译： 一种用于确保发射机和接收机之间的无线通信的方法包括：接收机接收信号; 由接收机提取接收到的该信号的至少一个噪声参数; 提取的噪声参数与存储在接收机中的存储器中的至少一个对应的参考噪声参数进行比较; 根据该比较的结果确定发射机和接收机之间是否存在中继设备; 接收机的初步校准，其中：接收机在没有中继设备干预的情况下接收到与发射机的直接通信产生的信号，接收机从接收到的信号中提取至少一个噪声参数，并且接收机将该噪声参数存储在 存储器作为直接通信的参考噪声参数特性，而在发射机和接收机之间没有中继设备。

    Multi-band jammer including airborne systems
    8.
    发明授权
    Multi-band jammer including airborne systems 失效
    多频段干扰机，包括机载系统

    公开(公告)号：US08170467B2

    公开(公告)日：2012-05-01

    申请号：US12728379

    申请日：2010-03-22

    申请人： Robert Eugene Stoddard

    发明人： Robert Eugene Stoddard

    IPC分类号： H04K3/00 ,  H04B1/10 ,  H04B1/38

    CPC分类号： H04K3/44 ,  H04K3/28 ,  H04K3/42 ,  H04K3/45 ,  H04K3/46 ,  H04K2203/16 ,  H04K2203/34

    摘要： An airborne jammer for transport by an aircraft for jamming communications in a communications system where the communications system operates with digital bursts having burst periods measured in time and occurring in a communication frequency band such as GSM having a transmit band and a receive band. The jammer includes a tone comb generator for providing repetitions of jamming signals for the communication frequency band where the jamming signals have jamming signal intervals providing frequency separation between the jamming signals. The jamming signals are generated with a dwell time substantially less than a burst period for the communications system. The jamming signals are transmitted as RF jamming signals to jam communications for mobile stations.

    摘要翻译： 一种机载干扰机，用于在通信系统中进行通信的通信系统进行干扰通信，该通信系统中的数字突发具有在时间上测量的突发周期并且发生在诸如具有发射频带和接收频带的GSM的通信频带中。 干扰器包括一个音频发生器，用于提供干扰信号具有干扰信号间隔的通信频带的干扰信号的重复，从而提供干扰信号之间的频率间隔。 干扰信号产生的停留时间明显小于通信系统的脉冲串周期。 干扰信号作为RF干扰信号发送，阻塞移动台的通信。

    MASKING SOUND GENERATING APPARATUS, MASKING SYSTEM, MASKING SOUND GENERATING METHOD, AND PROGRAM
    10.
    发明申请
    MASKING SOUND GENERATING APPARATUS, MASKING SYSTEM, MASKING SOUND GENERATING METHOD, AND PROGRAM 有权
    显示声音发生装置，屏蔽系统，屏蔽声音发生方法和程序

    公开(公告)号：US20100208912A1

    公开(公告)日：2010-08-19

    申请号：US12708751

    申请日：2010-02-19

    申请人： Mikio TOHYAMA ,  Mai Koike ,  Yasushi Shimizu

    发明人： Mikio TOHYAMA ,  Mai Koike ,  Yasushi Shimizu

    IPC分类号： H04R3/02

    CPC分类号： G10K11/175 ,  H04K1/02 ,  H04K1/04 ,  H04K1/06 ,  H04K3/43 ,  H04K3/46 ,  H04K3/825 ,  H04K2203/12

    摘要： In a masking sound generating apparatus, a band divider divides a target sound signal into a plurality of frequency bands to generate a plurality of band signals. An envelope signal generating part generates a plurality of envelope signals representing respective envelopes of the plurality of the band signals. A signal converter segments each of the plurality of the envelope signals into a plurality of frames, then specifies frames of segmented envelope signals which have an amplitude greater than a first threshold and less than a second threshold, and changes an order of the specified frames in an arrangement of the plurality of the frames. A multiplier multiplies each of the plurality of the envelope signals by a noise signal, each envelope signal having the order of the frames changed by the signal converter, and outputs the plurality of the envelope signals multiplied by the noise signal as individual band masking signals. An adder adds the individual band masking signals to output a masking sound signal capable of masking the target sound signal.

    摘要翻译： 在掩蔽声产生装置中，分频器将目标声音信号分割为多个频带，以产生多个频带信号。 包络信号生成部生成表示多个频带信号的各个信封的多个包络信号。 信号转换器将多个包络信号中的每一个分成多个帧，然后指定具有大于第一阈值且小于第二阈值的幅度的分段包络信号的帧，并且改变指定帧的顺序 多个框架的布置。 乘法器将多个包络信号中的每一个乘以噪声信号，每个包络信号具有由信号转换器改变的帧的顺序，并将乘以噪声信号的多个包络信号作为单独的带屏蔽信号输出。 加法器将各个带屏蔽信号相加以输出能够掩蔽目标声音信号的掩蔽声音信号。