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    • 4. 发明申请
    • WIRELESS COMMUNICATION DEVICE
    • 无线通信设备
    • US20150236811A1
    • 2015-08-20
    • US14600760
    • 2015-01-20
    • KABUSHIKI KAISHA TOSHIBA
    • Koji AKITAYukako TSUTSUMIKoji OGURA
    • H04K3/00H01Q1/24
    • H04K3/65H04K1/08H04K3/68H04K3/827H04K2203/32
    • According to an embodiment, a wireless communication device includes first and second wireless units. The first wireless unit includes a first reception antenna and a first transmission antenna in an enclosure, transmits a first wireless signal via the first transmission antenna, and receives a second wireless signal via the first reception antenna. The second wireless unit includes a second reception antenna and a second transmission antenna in the enclosure, transmits the second wireless signal via the second transmission antenna, and receives the first wireless signal via the second reception antenna. The first and second wireless units are disposed such that value of half distance between the first and second transmission antennas is smaller than value of a smaller one among a first shortest distance between the first transmission antenna and an inner wall of the enclosure, and a second shortest distance between the second transmission antenna and the inner wall.
    • 根据实施例,无线通信设备包括第一和第二无线单元。 第一无线单元包括机壳中的第一接收天线和第一发射天线,经由第一发射天线发射第一无线信号,并经由第一接收天线接收第二无线信号。 第二无线单元包括外壳中的第二接收天线和第二发送天线,经由第二发送天线发送第二无线信号,并经由第二接收天线接收第一无线信号。 第一无线单元和第二无线单元被布置成使得第一和第二发送天线之间的一半距离的值小于第一发送天线与外壳的内壁之间的第一最短距离中的较小值, 第二传输天线与内壁之间的最短距离。
    • 10. 发明申请
    • GUARD SPOT BEAMS TO DETER SATELLITE-BASED AUTHENTICATION SYSTEM SPOOFING
    • 卫星点检测卫星验证系统SPOOFING
    • US20130014216A1
    • 2013-01-10
    • US13073830
    • 2011-03-28
    • David G. LawrenceGregory M. GuttDavid A. Whelan
    • David G. LawrenceGregory M. GuttDavid A. Whelan
    • G06F21/00
    • H04B7/18593H04K3/68H04K3/822H04K3/86H04L63/08
    • A transmission-based authentication system and method to prevent an unauthorized claimant from tracking a signal are disclosed herein. In one or more embodiments, the method involves transmitting, from at least one transmission source, a plurality of authentication signals. The method further involves receiving, from at least one receiving source, a resultant signal that includes at least two of the authentication signals. Further, the method involves authenticating, with at least one authenticator device, at least one claimant by comparing properties of the resultant signal the claimant receives from the receiving source location(s) to expected properties of the resultant signal that the claimant should receive from the receiving source location(s). The properties that are compared are signal power, doppler shift, time of reception, and/or signal modulation. The transmission source(s) is employed in at least one satellite and/or at least one pseudo-satellite.
    • 本文公开了一种用于防止未经授权的权利要求者跟踪信号的基于传输的认证系统和方法。 在一个或多个实施例中,该方法包括从至少一个传输源发送多个认证信号。 该方法还包括从至少一个接收源接收包括认证信号中的至少两个的合成信号。 此外,该方法包括通过将索赔人从接收源位置接收到的所得信号的属性与索赔人应从其接收的所得到的信号的期望属性进行比较,至少使用一个认证器装置来认证至少一个请求者 接收源位置。 比较的属性是信号功率,多普勒频移,接收时间和/或信号调制。 至少一个卫星和/或至少一个伪卫星采用发射源。