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公开(公告)号：EP1336860B1
公开(公告)日：2011-02-23
申请号：EP02028094.7
申请日：2002-12-17
发明人： McBurney, Paul W. , Woo, Arthur N.
IPC分类号： G01S19/36
CPC分类号： G01S19/36
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公开(公告)号：EP1686392B1
公开(公告)日：2009-03-18
申请号：EP06000612.9
申请日：2006-01-12
发明人： McBurney, Paul W. , Rode, France
CPC分类号： G01S19/42 , G01S19/23 , G01S19/235 , G01S19/24
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43.发明授权Estimating GPS reference frequency drift from PDC-handset VCO-bursts 有权由PDC手持机VCO信号来确定所述参考频率的漂移在GPS系统，通过一个以脉冲串发射的装置
公开(公告)号：EP1510830B1
公开(公告)日：2006-06-28
申请号：EP04019596.8
申请日：2004-08-18
发明人： McBurney, Paul W.
IPC分类号： G01S1/00
CPC分类号： G01S19/235
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公开(公告)号：EP1197761B1
公开(公告)日：2005-03-30
申请号：EP01124170.0
申请日：2001-10-10
发明人： McBurney, Paul W. , Woo, Arthur N.
CPC分类号： G01S5/0045 , G01S5/0018 , G01S19/05 , G01S19/07 , G01S19/25 , G01S19/35
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45.发明公开
公开(公告)号：EP1400815A1
公开(公告)日：2004-03-24
申请号：EP03021006.6
申请日：2003-09-17
发明人： McBurney, Paul W. , Kimura, Akira
IPC分类号： G01S5/14
CPC分类号： G01S19/27 , G01S19/258
摘要： An SPS receiver comprises a radio receiver for measuring pseudoranges to orbiting SPS satellites, a local real time clock accurate within three seconds of true SPS system time, and a communication channel to receive NAV-data rebroadcasts from a server. Such server is associated with its own private navigation receiver that has direct satellite signal reception that is strong enough to reliably demodulate the SPS system NAV-data. The SPS receiver synthesizes its own NAV-data from time information provided by the local real time clock and almanac and ephemeris data provided by the server in the rebroadcast. Thus the SPS receiver can operate in weak signal environments that would otherwise be impossible.
摘要翻译： SPS接收机包括用于测量绕轨道SPS卫星的伪距的无线电接收机，在真实SPS系统时间的三秒内精确的本地实时时钟，以及从服务器接收NAV数据重播的通信信道。 这样的服务器与其自己的具有直接卫星信号接收的私人导航接收机相关联，其具有足够强度以可靠地解调SPS系统NAV数据。 SPS接收机根据由本地实时时钟提供的时间信息和由转播服务器提供的历书和星历数据综合自己的NAV数据。 因此，SPS接收机可以在弱信号环境中工作，否则将是不可能的。
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公开(公告)号：EP1396731A1
公开(公告)日：2004-03-10
申请号：EP03017972.5
申请日：2003-08-06
IPC分类号： G01S5/14
CPC分类号： G01S19/254 , G01S5/0072 , G01S19/05
摘要： A cellphone system comprises a GPS reference station located with a telephone cell site.. Such GPS reference station tracks the GPS satellites visible to its local area and estimates the Doppler for each such GPS satellite. The system also includes mobile GPS receivers and cellphones that move around and through the operational area of the cell site. It is assumed that the satellite Dopplers seen by the GPS reference station will have insubstantial differences with the true Dopplers observed by other GPS receivers operating within the cell site's service area. The Doppler estimates are thus routinely communicated over a wireless telephone channel to the mobile GPS receivers and cellphones that register locally. Such mobile GPS receivers then can confidently adopt the surrogate Doppler estimates as a center starting point for their initialization frequency searches. The time required for such mobile GPS receivers and cellphones to initialize and provide a first fix is thereby substantially reduced.
摘要翻译： 一个蜂窝电话系统包括一个位于电话小区站点的GPS参考站。这种GPS参考站追踪其局部区域可见的GPS卫星，并估计每个这种GPS卫星的多普勒。 该系统还包括移动GPS接收器和移动电话，可以移动并穿过基站的操作区域。 假定由GPS参考站看到的卫星多普勒将与由在该小区站点的服务区内操作的其他GPS接收器观测到的真正多普勒无差别。 多普勒估计因此通过无线电话信道常规地传送到本地注册的移动GPS接收器和蜂窝电话。 这样的移动GPS接收机然后可以自信地采用替代多普勒估计作为其初始化频率搜索的中心起点。 这样移动GPS接收机和手机初始化并提供第一次修复所需的时间因此大大减少。
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47.发明公开
公开(公告)号：EP1337058A2
公开(公告)日：2003-08-20
申请号：EP02028096.2
申请日：2002-12-17
CPC分类号： G01S19/256 , H04J3/0644 , H04J3/0667
摘要： A navigation-satellite receiver support data network comprises a server connected to the Internet to provide initialization information to clients for faster cold starts. The server includes a GPS receiver that provides for tracking of a constellation of navigation satellites. When a client is started cold, time and frequency are initially unknown to it. Test messages are sent back and forth over the Internet and a path delay time is computed from the average of the quickest transit times. This yields the offset time between the server's time system and the client's time system. The server sends current time information to the client, and the computed path delay is added. The client can then compute correct time from the server and path delay information, and thereby select much sooner which satellites are correct to search.
摘要翻译： 导航卫星接收机支持数据网络，包括连接到Internet，以更快的冷启动提供初始化信息给客户端的服务器。 服务器包括一个GPS接收器确实提供了用于导航卫星星座的跟踪。 当一个客户端启动冷，时间和频率是最初不知道它。 测试邮件发送来回通过互联网和路径延迟时间从平均最快运输时间的计算。 这产生服务器的时间系统和客户端的时间系统之间的偏移时间。服务器发送当前的时间信息到客户端，并且被加到所计算的路径延迟。 然后，客户机可以计算从服务器和路径延迟信息的正确时间，从而选择更快哪些卫星是正确的搜索。
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公开(公告)号：EP1336866A2
公开(公告)日：2003-08-20
申请号：EP02028098.8
申请日：2002-12-17
CPC分类号： G01S19/258 , G01S19/05
摘要： A navigation-satellite receiver network comprises a server connected to the Internet to provide real-time correction information to clients. The server includes a GPS receiver that provides for tracking of a constellation of navigation satellites. When a client is online, it can receive satellite position and velocity information in the form of a polynomial and coefficients. Clock, ionosphere, troposphere, and other corrections are all bundled into one polynomial. The client therefore never computes or uses almanac or ephemeris.
摘要翻译： 导航卫星接收机网络包括连接到因特网以向客户端提供实时校正信息的服务器。 该服务器包括GPS接收器，用于跟踪导航卫星的星座。 当客户端在线时，可以以多项式和系数的形式接收卫星位置和速度信息。 时钟，电离层，对流层和其他校正都被捆绑成一个多项式。 因此客户永远不会计算或使用历书或星历。
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公开(公告)号：EP1336859A2
公开(公告)日：2003-08-20
申请号：EP02028091.3
申请日：2002-12-17
摘要： A navigation-satellite receiver comprises a crystal oscillator that is affected by local ambient temperature in a repeatable way. After locking onto a GPS satellite, the receiver is used to calculate the true frequency bias of the local crystal oscillator. GPS-system lock provides an atomic-clock basis for such measurements of true frequency. The current temperature of the crystal is measured and recorded in association with the true frequency bias measurement. The data is then used to generate a ninth-order polynomial that describes the frequency drift of the crystal over temperature. Then during receiver initialization when the local reference oscillator is not in lock, the ambient temperature is measured and used to index the ninth-order polynomial to estimate the actual crystal frequency. Such frequency estimate is then used as a basis to find signal from visible SV's in an overhead constellation.
摘要翻译： 导航卫星接收机包括以可重复的方式受局部环境温度影响的晶体振荡器。 锁定在GPS卫星上后，接收机用于计算局部晶体振荡器的真实频偏。 GPS系统锁为真实频率的这种测量提供了原子钟基础。 与真实的频率偏差测量相关联地测量和记录晶体的当前温度。 然后将数据用于生成描述晶体温度的频率漂移的九阶多项式。 然后在本地参考振荡器未锁定的接收机初始化期间，测量环境温度并用于对第九阶多项式进行索引以估计实际晶体频率。 然后，这种频率估计被用作在顶点星座中从可见的SV查找信号的基础。
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50.发明公开
公开(公告)号：EP1197761A2
公开(公告)日：2002-04-17
申请号：EP01124170.0
申请日：2001-10-10
发明人： McBurney, Paul W. , Woo, Arthur N.
CPC分类号： G01S5/0045 , G01S5/0018 , G01S19/05 , G01S19/07 , G01S19/25 , G01S19/35
摘要： A satellite-navigation system comprises an observer platform for collecting signal observations from orbiting navigation satellites. A server platform provides a simplified navigation-satellite constellation almanac, ephemeris, differential correction, and client services. A navigation platform passes information between the observer and server platforms and provides for autonomous position solution computations for a limited time after a periodic call for an aiding data from the server platform. A measurement platform included in the server platform makes static observations of a navigation-satellite constellation and that builds a database of measurement errors and satellite data messages. A health and quality monitor included in the server platform checks the static observations and preventing an inclusion of incorrect information in the database of measurement errors and satellite data messages. A TCP/IP communication link existing at least once between the server and navigation platforms supports an information datapacket format that periodically transfers over the communication link. It reduces the almanac and ephemeris satellite messages at the server platform to a set of simple polynomials that represent a recent satellite position and velocity. These are useful at the navigation platform to compute a current position solution with real-time data from the observation platform. An aiding data with light-weight models is provided by the server platform to the observer platform to eliminate all data storage of almanac and ephemeris, and to permit only fixed-point integer arithmetic to be used to solve for user position at the navigation platform.
摘要翻译： 卫星导航系统包括用于收集来自轨道导航卫星的信号观测的观测台。 服务器平台提供了一个简化的导航卫星星座历书，星历，差分校正和客户端服务。 导航平台在观察者和服务器平台之间传递信息，并在从服务器平台的辅助数据的周期性呼叫之后的有限时间内提供自主的位置解决计算。 服务器平台中包含的一个测量平台，可以对卫星导航卫星进行静态观测，并建立测量误差数据库和卫星数据消息。 服务器平台中包含的健康和质量监控器会检查静态观察结果，并防止在测量错误和卫星数据消息数据库中包含不正确的信息。 在服务器和导航平台之间至少存在一次的TCP / IP通信链路支持周期性地通过通信链路传输的信息数据包格式。 它将服务器平台下的历书和星历卫星消息减少为一组简单的多项式，表示最近的卫星位置和速度。 这些在导航平台上可以从观测平台计算出具有实时数据的当前位置解决方案。 轻量级模型的辅助数据由服务器平台提供给观察者平台，以消除年历和星历的所有数据存储，并且仅允许使用定点整数算术来解决导航平台上的用户位置。
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