公开(公告)号：US20120121087A1

公开(公告)日：2012-05-17

申请号：US13255984

申请日：2010-03-12

申请人： Mark L. Psiaki

发明人： Mark L. Psiaki

IPC分类号： H04K1/00

CPC分类号： G01S19/215 ,  G01S19/05

摘要： A system and method for detecting spoofing of signals by processing intermittent bursts of encrypted Global Navigation Satellite System (GNSS) signals in order to determine whether unencrypted signals are being spoofed.

摘要翻译： 一种用于通过处理加密的全球导航卫星系统（GNSS）信号的间歇脉冲串来检测信号的欺骗的系统和方法，以便确定未加密的信号是否被欺骗。

公开(公告)号：US20110163913A1

公开(公告)日：2011-07-07

申请号：US12434026

申请日：2009-05-01

申请人： Clark E. Cohen ,  Todd E. Humphreys ,  Brent M. Ledvina ,  William J. Bencze ,  Mark L. Psiaki ,  Bryan T. Galusha

发明人： Clark E. Cohen ,  Todd E. Humphreys ,  Brent M. Ledvina ,  William J. Bencze ,  Mark L. Psiaki ,  Bryan T. Galusha

IPC分类号： G01S19/46 ,  G01S19/31 ,  G01S19/37

CPC分类号： G01S19/46 ,  G01S19/09 ,  G01S19/36 ,  G01S19/43

摘要： A practical method for adding significant new high-performance, tightly integrated Nav-Com capability to any Global Navigation Satellite System (GNSS) user equipment, such as GPS receivers, requires no hardware modifications to the existing user equipment. In one example, the iGPS concept is applied to a Defense Advanced GPS Receiver (DAGR) and combines Low Earth Orbiting (LEO) satellites, such as Iridium, with GPS or other GNSS systems to significantly improve the accuracy, integrity, and availability of Position, Navigation, and Timing (PNT)—in some cases by three orders of magnitude, to enable high precision GNSS carrier phase observable to be more readily exploited to improve PNT availability—even under interference conditions or occluded environments, and to enable new communication enhancements made available by the synthesis of precisely coupled navigation and communication modes. To achieve time synchronization stability to the required sub-20 ps level between the existing DAGR and a plug-in iGPS enhancement module, a special-purpose wideband reference signal is generated by the iGPS module and coupled to the DAGR via the existing antenna port, so that no hardware modification of the DAGR is required.

摘要翻译： 对任何全球导航卫星系统（GNSS）用户设备（如GPS接收机）增加重要的高性能，紧密集成的Nav-Com功能的实际方法不需要对现有用户设备进行硬件修改。 在一个示例中，iGPS概念被应用于国防高级GPS接收机（DAGR），并将诸如铱星的低地球轨道（LEO）卫星与GPS或其他GNSS系统相结合，以显着提高Position的准确性，完整性和可用性 ，导航和定时（PNT） - 在某些情况下为三个数量级，以使即使在干扰条件或闭塞环境下也可以更容易地利用高精度GNSS载波相位来提高PNT可用性，并实现新的通信增强 通过合成精确耦合的导航和通信模式提供。 为了在现有的DAGR和插件式iGPS增强模块之间达到所需的20ps级别的时间同步稳定性，由iGPS模块生成专用宽带参考信号，并通过现有天线端口耦合到DAGR， 因此不需要硬件修改DAGR。

公开(公告)号：US20150234053A1

公开(公告)日：2015-08-20

申请号：US14429197

申请日：2013-09-20

申请人： Mark L. PSIAKI ,  Steven P. POWELL ,  Brady O'HANLON ,  CORNELL UNIVERSITY

发明人： Mark L. Psiaki ,  Steven P. Powell ,  Brady W. O'Hanlon

IPC分类号： G01S19/21 ,  H04K3/00

CPC分类号： G01S19/215 ,  G01S19/13 ,  G01S19/21 ,  G01S19/43 ,  H04K3/22 ,  H04K3/65 ,  H04K3/90 ,  H04K2203/32

摘要： Methods and systems that can detect GNSS spoofing attacks and that do not require explicit or implicit knowledge of exact position or attitude and that provide hypothesis test statistics, threshold values, and probabilities of false alarm and missed detection.

摘要翻译： 可以检测GNSS欺骗攻击的方法和系统，并且不需要明确或隐含的确切位置或姿态知识，并提供虚假警报和错过检测的假设检验统计信息，阈值和概率。

公开(公告)号：US07010060B2

公开(公告)日：2006-03-07

申请号：US10753927

申请日：2004-01-08

申请人： Brent M. Ledvina ,  Mark L. Psiaki ,  Steven P. Powell ,  Paul M. Kintner, Jr.

发明人： Brent M. Ledvina ,  Mark L. Psiaki ,  Steven P. Powell ,  Paul M. Kintner, Jr.

IPC分类号： H03K9/00

CPC分类号： G01S19/37 ,  G01S19/30 ,  H04B1/7075 ,  H04B1/7085 ,  H04B1/7095 ,  H04B2201/70715

摘要： A real-time software receiver that executes on a general purpose processor. The software receiver includes data acquisition and correlator modules that perform, in place of hardware correlation, baseband mixing and PRN code correlation using bit-wise parallelism.

摘要翻译： 在通用处理器上执行的实时软件接收器。 软件接收机包括数据采集和相关器模块，它们使用逐位并行执行代替硬件相关的基带混合和PRN码相关。

公开(公告)号：US08712051B2

公开(公告)日：2014-04-29

申请号：US13255984

申请日：2010-03-12

申请人： Mark L. Psiaki

发明人： Mark L. Psiaki

IPC分类号： H04L29/06

CPC分类号： G01S19/215 ,  G01S19/05

摘要： A system and method for detecting spoofing of signals by processing intermittent bursts of encrypted Global Navigation Satellite System (GNSS) signals in order to determine whether unencrypted signals are being spoofed. The system and method can allow a specially equipped GNSS receiver to detect sophisticated spoofing that cannot he detected using receiver antonomous integrity monitoring techniques. The system and method do not require changes to the signal structure of encrypted civilian GNSS signals, but instead use a short segment of an encrypted signal that is broadcast by the same GNSS spacecraft which broadcast the unencrypted signal of interest.

摘要翻译： 一种用于通过处理加密的全球导航卫星系统（GNSS）信号的间歇脉冲串来检测信号的欺骗的系统和方法，以便确定未加密的信号是否被欺骗。 该系统和方法可以允许特别装备的GNSS接收机来检测使用接收机的反向完整性监控技术不能检测出复杂的欺骗。 该系统和方法不需要改变加密民用GNSS信号的信号结构，而是使用广播未加密的感兴趣信号的同一GNSS航天器广播的加密信号的短段。

公开(公告)号：US07372400B2

公开(公告)日：2008-05-13

申请号：US11268317

申请日：2005-11-07

申请人： Clark E. Cohen ,  Robert W. Brumley ,  Mark L. Psiaki ,  Gregory M. Gutt ,  William J. Bencze ,  Brent M. Ledvina ,  Barton G. Ferrell ,  David A. Whelan

发明人： Clark E. Cohen ,  Robert W. Brumley ,  Mark L. Psiaki ,  Gregory M. Gutt ,  William J. Bencze ,  Brent M. Ledvina ,  Barton G. Ferrell ,  David A. Whelan

IPC分类号： G01S1/00

CPC分类号： H04K3/255 ,  G01S19/05 ,  G01S19/11 ,  G01S19/21 ,  G01S19/29 ,  G01S19/43 ,  G01S19/46 ,  H04K3/90

摘要： A navigation system provides a significant level of protection against all forms of interference or jamming to GPS in a cost-effective way. The system employs a network of ground reference stations and Low Earth Orbiting (LEO) satellites in conjunction with GPS. A common-view ranging geometry to a GPS satellite is established that links a reference station and a user. A second common-view geometry to a LEO satellite between the same reference station and user pair is also established. The ground stations synthesize real-time aiding signals by making carrier phase measurements of GPS the LEO satellite signals. This aiding information is transmitted via the LEO satellites to the user receiver at high power to penetrate ambient jamming. The user receiver locks onto the carrier phase of the LEO satellite, demodulates the aiding information, then applies the carrier phase measurements and the aiding information to enable extended coherent measurements of the GPS signals. The system thereby recovers the GPS signals that would otherwise be lost to the jamming.

摘要翻译： 导航系统以成本有效的方式提供对GPS的所有形式的干扰或干扰的显着水平的保护。 该系统结合GPS采用地面参考站和低地球轨道（LEO）卫星网络。 建立了连接参考站和用户的GPS卫星的普通视距测距几何。 还建立了在同一参考站和用户对之间的LEO卫星的第二共同视图几何。 地面站通过对GPS的载波相位测量LEO卫星信号来合成实时辅助信号。 该辅助信息通过LEO卫星以高功率传输到用户接收机以穿透环境干扰。 用户接收器锁定到LEO卫星的载波相位，解调辅助信息，然后应用载波相位测量和辅助信息，以实现GPS信号的扩展相干测量。 因此，该系统恢复了否则将被卡住的GPS信号。

公开(公告)号：US20080062039A1

公开(公告)日：2008-03-13

申请号：US11268317

申请日：2005-11-07

申请人： Clark E. Cohen ,  Robert W. Brumley ,  Mark L. Psiaki ,  Gregory M. Gutt ,  William J. Bencze ,  Brent M. Ledvina ,  Barton G. Ferrell ,  David A. Whelan

发明人： Clark E. Cohen ,  Robert W. Brumley ,  Mark L. Psiaki ,  Gregory M. Gutt ,  William J. Bencze ,  Brent M. Ledvina ,  Barton G. Ferrell ,  David A. Whelan

IPC分类号： G01S5/14

CPC分类号： H04K3/255 ,  G01S19/05 ,  G01S19/11 ,  G01S19/21 ,  G01S19/29 ,  G01S19/43 ,  G01S19/46 ,  H04K3/90

摘要： A navigation system provides a significant level of protection against all forms of interference or jamming to GPS in a cost-effective way. The system employs a network of ground reference stations and Low Earth Orbiting (LEO) satellites in conjunction with GPS. A common-view ranging geometry to a GPS satellite is established that links a reference station and a user. A second common-view geometry to a LEO satellite between the same reference station and user pair is also established. The ground stations synthesize real-time aiding signals by making carrier phase measurements of GPS the LEO satellite signals. This aiding information is transmitted via the LEO satellites to the user receiver at high power to penetrate ambient jamming. The user receiver locks onto the carrier phase of the LEO satellite, demodulates the aiding information, then applies the carrier phase measurements and the aiding information to enable extended coherent measurements of the GPS signals. The system thereby recovers the GPS signals that would otherwise be lost to the jamming.

摘要翻译： 导航系统以成本有效的方式提供对GPS的所有形式的干扰或干扰的显着水平的保护。 该系统结合GPS采用地面参考站和低地球轨道（LEO）卫星网络。 建立了连接参考站和用户的GPS卫星的普通视距测距几何。 还建立了在同一参考站和用户对之间的LEO卫星的第二共同视图几何。 地面站通过对GPS的载波相位测量LEO卫星信号来合成实时辅助信号。 该辅助信息通过LEO卫星以高功率传输到用户接收机以穿透环境干扰。 用户接收器锁定到LEO卫星的载波相位，解调辅助信息，然后应用载波相位测量和辅助信息，以实现GPS信号的扩展相干测量。 因此，该系统恢复了否则将被卡住的GPS信号。

公开(公告)号：US09958549B2

公开(公告)日：2018-05-01

申请号：US14429197

申请日：2013-09-20

申请人： CORNELL UNIVERSITY ,  Mark L. Psiaki ,  Steven P. Powell ,  Brady W. O'Hanlon

发明人： Mark L. Psiaki ,  Steven P. Powell ,  Brady W. O'Hanlon

IPC分类号： G01S19/13 ,  G01S19/21 ,  H04K3/00 ,  G01S19/43

CPC分类号： G01S19/215 ,  G01S19/13 ,  G01S19/21 ,  G01S19/43 ,  H04K3/22 ,  H04K3/65 ,  H04K3/90 ,  H04K2203/32

摘要： Methods and systems that can detect GNSS spoofing attacks and that do not require explicit or implicit knowledge of exact position or attitude and that provide hypothesis test statistics, threshold values, and probabilities of false alarm and missed detection.

公开(公告)号：US07978130B1

公开(公告)日：2011-07-12

申请号：US12434026

申请日：2009-05-01

申请人： Clark E. Cohen ,  Todd E. Humphreys ,  Brent M. Ledvina ,  William J. Bencze ,  Mark L. Psiaki ,  Bryan T. Galusha

发明人： Clark E. Cohen ,  Todd E. Humphreys ,  Brent M. Ledvina ,  William J. Bencze ,  Mark L. Psiaki ,  Bryan T. Galusha

IPC分类号： G01S19/18 ,  G01S19/25 ,  G01S19/33

CPC分类号： G01S19/46 ,  G01S19/09 ,  G01S19/36 ,  G01S19/43

摘要： A practical method for adding new high-performance, tightly integrated Nav-Com capability to any Global Navigation Satellite System (GNSS) user equipment requires no hardware modifications to the existing user equipment. In one example, the iGPS concept is applied to a Defense Advanced GPS Receiver (DAGR) and combines Low Earth Orbiting (LEO) satellites, such as Iridium, with GPS or other GNSS systems to significantly improve the accuracy, integrity, and availability of Position, Navigation, and Timing (PNT) and to enable new communication enhancements made available by the synthesis of precisely coupled navigation and communication modes. To achieve time synchronization stability between the existing DAGR and a plug-in iGPS enhancement module, a special-purpose wideband reference signal is generated by the iGPS module and coupled to the DAGR via the existing antenna port.

摘要翻译： 将新的高性能，紧密集成的Nav-Com功能添加到任何全球导航卫星系统（GNSS）用户设备的实用方法不需要对现有用户设备进行硬件修改。 在一个示例中，iGPS概念被应用于国防高级GPS接收机（DAGR），并将诸如铱星的低地球轨道（LEO）卫星与GPS或其他GNSS系统相结合，以显着提高Position的准确性，完整性和可用性 ，导航和定时（PNT），并且通过合成精确耦合的导航和通信模式来实现新的通信增强。 为了实现现有DAGR和插件iGPS增强模块之间的时间同步稳定性，iGPS模块生成专用宽带参考信号，并通过现有天线端口耦合到DAGR。

公开(公告)号：US07305021B2

公开(公告)日：2007-12-04

申请号：US11316536

申请日：2005-12-22

申请人： Brent M. Ledvina ,  Mark L. Psiaki ,  Steven P. Powell ,  Paul M. Kintner, Jr.

发明人： Brent M. Ledvina ,  Mark L. Psiaki ,  Steven P. Powell ,  Paul M. Kintner, Jr.

IPC分类号： H04K1/10

CPC分类号： G01S19/37 ,  G01S19/30 ,  H04B1/7075 ,  H04B1/7085 ,  H04B1/7095 ,  H04B2201/70715

摘要： A real-time software receiver that executes on a general purpose processor. The software receiver includes data acquisition and correlator modules that perform, in place of hardware correlation, baseband mixing and PRN code correlation using bit-wise parallelism.

摘要翻译： 在通用处理器上执行的实时软件接收器。 该软件接收机包括数据采集和相关器模块，它们使用逐位并行执行代替硬件相关的基带混合和PRN码相关。