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1. 发明申请

WO2011016821A2 PRACTICAL METHOD FOR UPGRADING EXISTING GNSS USER EQUIPMENT WITH TIGHTLY INTEGRATED NAV-COM CAPABILITY 审中-公开
标题翻译：用于升级现有的全球导航卫星系统用户设备的实际方法，具有轻松集成的资产净值能力
公开(公告)号：WO2011016821A2
公开(公告)日：2011-02-10
申请号：PCT/US2010/001274
申请日：2010-04-30
申请人： COHERENT NAVIGATION, INC.
发明人： LEDVINA, Brent, M. , COHEN, Clark E. , HUMPHREYS, Todd E. , LEDVINA, Brent M. , BENCZE, William J. , PSIAKI, Mark L. , GALUSHA, Bryan T.
IPC分类号： G01S19/02
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, andTiming (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）增加重要的新的高性能，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，导航和计时（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可以通过合成精确耦合的导航和通信模式。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。

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