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1.发明授权公开(公告)号：US08134497B2
公开(公告)日：2012-03-13
申请号：US12241451
申请日：2008-09-30
摘要： A method and system for delivery of location-dependent time-specific corrections. In one embodiment, a first extended-lifetime correction for a first region is generated. A distribution timetable is used to determine a first time interval for transmitting the first extended-lifetime correction to the first region. The first extended-lifetime correction is then transmitted via a wireless communication network to said first region in accordance with said distribution timetable.
摘要翻译： 一种用于传送位置相关时间特定校正的方法和系统。 在一个实施例中，产生用于第一区域的第一延长寿命校正。 分配时间表用于确定用于将第一延长寿命校正发送到第一区域的第一时间间隔。 然后，根据所述分配时间表，第一延长寿命校正通过无线通信网络发送到所述第一区域。
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2.发明授权System and method for refining a position estimate of a low earth orbiting satellite 有权改善低地球轨道卫星位置估计的系统和方法公开(公告)号：US08515670B2
公开(公告)日：2013-08-20
申请号：US13482603
申请日：2012-05-29
IPC分类号： G01C21/00
摘要： In a method for refining a position estimate of a low earth orbiting (LEO) satellite a first position estimate of a LEO satellite is obtained with a GNSS receiver on-board the LEO satellite. The first position estimate is communicated to a Virtual Reference Station (VRS) processor. VRS corrections are received at the LEO satellite, the VRS corrections having been calculated for the first position estimate by the VRS processor. The VRS corrections are processed on-board the LEO satellite such that a VRS corrected LEO satellite position estimate of the LEO satellite is generated for the first position estimate.
摘要翻译： 在用于改善低地球轨道（LEO）卫星的位置估计的方法中，利用LEO卫星上的GNSS接收机获得LEO卫星的第一位置估计。 第一位置估计被传送到虚拟参考站（VRS）处理器。 在LEO卫星接收到VRS校正，VRS校正是由VRS处理器计算出的第一位置估计值。 在LEO卫星上处理VRS校正，以便为第一位置估计生成LEO卫星的VRS校正LEO卫星位置估计。
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3.发明授权System and method for refining a position estimate of a low earth orbiting satellite 有权改善低地球轨道卫星位置估计的系统和方法公开(公告)号：US08260551B2
公开(公告)日：2012-09-04
申请号：US12336177
申请日：2008-12-16
IPC分类号： G01C21/00
摘要： In a method for refining a position estimate of a low earth orbiting (LEO) satellite a first position estimate of a LEO satellite is obtained with a GNSS receiver on-board the LEO satellite. The first position estimate is communicated to a Virtual Reference Station (VRS) processor. VRS corrections are received at the LEO satellite, the VRS corrections having been calculated for the first position estimate by the VRS processor. The VRS corrections are processed on-board the LEO satellite such that a VRS corrected LEO satellite position estimate of the LEO satellite is generated for the first position estimate.
摘要翻译： 在用于改善低地球轨道（LEO）卫星的位置估计的方法中，利用LEO卫星上的GNSS接收机获得LEO卫星的第一位置估计。 第一位置估计被传送到虚拟参考站（VRS）处理器。 在LEO卫星接收到VRS校正，VRS校正是由VRS处理器计算出的第一位置估计值。 在LEO卫星上处理VRS校正，以便为第一位置估计生成LEO卫星的VRS校正LEO卫星位置估计。
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公开(公告)号：US10234562B2
公开(公告)日：2019-03-19
申请号：US13403775
申请日：2012-02-23
摘要： A method and system for delivery of location-dependent time-specific corrections. In one embodiment, a first extended-lifetime correction for a first region is generated. A distribution timetable is used to determine a first time interval for transmitting the first extended-lifetime correction to the first region. The first extended-lifetime correction is then transmitted via a wireless communication network to said first region in accordance with said distribution timetable.
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5.发明申请公开(公告)号：US20120146847A1
公开(公告)日：2012-06-14
申请号：US13403775
申请日：2012-02-23
摘要： A method and system for delivery of location-dependent time-specific corrections. In one embodiment, a first extended-lifetime correction for a first region is generated. A distribution timetable is used to determine a first time interval for transmitting the first extended-lifetime correction to the first region. The first extended-lifetime correction is then transmitted via a wireless communication network to said first region in accordance with said distribution timetable.
摘要翻译： 一种用于传送位置相关时间特定校正的方法和系统。 在一个实施例中，产生用于第一区域的第一延长寿命校正。 分配时间表用于确定用于将第一延长寿命校正发送到第一区域的第一时间间隔。 然后，根据所述分配时间表，第一延长寿命校正通过无线通信网络发送到所述第一区域。
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公开(公告)号：US20090182502A1
公开(公告)日：2009-07-16
申请号：US12336177
申请日：2008-12-16
摘要： In a method for refining a position estimate of a low earth orbiting (LEO) satellite a first position estimate of a LEO satellite is obtained with a GNSS receiver on-board the LEO satellite. The first position estimate is communicated to a Virtual Reference Station (VRS) processor. VRS corrections are received at the LEO satellite, the VRS corrections having been calculated for the first position estimate by the VRS processor. The VRS corrections are processed on-board the LEO satellite such that a VRS corrected LEO satellite position estimate of the LEO satellite is generated for the first position estimate.
摘要翻译： 在用于改善低地球轨道（LEO）卫星的位置估计的方法中，利用LEO卫星上的GNSS接收机获得LEO卫星的第一位置估计。 第一位置估计被传送到虚拟参考站（VRS）处理器。 在LEO卫星接收到VRS校正，VRS校正是由VRS处理器计算出的第一位置估计值。 在LEO卫星上处理VRS校正，以便为第一位置估计生成LEO卫星的VRS校正LEO卫星位置估计。
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公开(公告)号：US20120232724A1
公开(公告)日：2012-09-13
申请号：US13482603
申请日：2012-05-29
摘要： In a method for refining a position estimate of a low earth orbiting (LEO) satellite a first position estimate of a LEO satellite is obtained with a GNSS receiver on-board the LEO satellite. The first position estimate is communicated to a Virtual Reference Station (VRS) processor. VRS corrections are received at the LEO satellite, the VRS corrections having been calculated for the first position estimate by the VRS processor. The VRS corrections are processed on-board the LEO satellite such that a VRS corrected LEO satellite position estimate of the LEO satellite is generated for the first position estimate.
摘要翻译： 在用于改善低地球轨道（LEO）卫星的位置估计的方法中，利用LEO卫星上的GNSS接收机获得LEO卫星的第一位置估计。 第一位置估计被传送到虚拟参考站（VRS）处理器。 在LEO卫星接收到VRS校正，VRS校正是由VRS处理器计算出的第一位置估计值。 在LEO卫星上处理VRS校正，以便为第一位置估计生成LEO卫星的VRS校正LEO卫星位置估计。
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公开(公告)号：US09733359B2
公开(公告)日：2017-08-15
申请号：US13522384
申请日：2011-02-14
申请人： Xiaoming Chen , Ulrich Vollath , Kendall Ferguson
发明人： Xiaoming Chen , Ulrich Vollath , Kendall Ferguson
IPC分类号： G01S19/04 , G01S19/07 , G01S19/32 , G01S19/44 , G01S19/40 , G01S19/41 , G01S19/43 , G01S19/02 , G01S1/00 , G01S5/14
CPC分类号： G01S19/04 , G01S1/00 , G01S5/14 , G01S19/02 , G01S19/07 , G01S19/32 , G01S19/40 , G01S19/41 , G01S19/43 , G01S19/44
摘要： Methods and apparatus for processing of GNSS data derived from multi-frequency code and carrier observations are presented which make available correction data for use by a rover located within the region, the correction data comprising: the ionospheric delay over the region, the tropospheric delay over the region, the phase-leveled geometric correction per satellite, and the at least one code bias per satellite. In some embodiments the correction data includes an ionospheric phase bias per satellite. Methods and apparatus for determining a precise position of a rover located within a region are presented in which a GNSS receiver is operated to obtain multi-frequency code and carrier observations and correction data, to create rover corrections from the correction data, and to determine a precise rover position using the rover observations and the rover corrections. The correction data comprises at least one code bias per satellite, a fixed-nature MW bias per satellite and/or values from which a fixed-nature MW bias per satellite is derivable, and an ionospheric delay per satellite for each of multiple regional network stations and/or non-ionospheric corrections. Methods and apparatus for encoding and decoding the correction messages containing correction data are also presented, in which network messages include network elements related to substantially all stations of the network and cluster messages include cluster elements related to subsets of the network.
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9.发明授权公开(公告)号：US08830121B2
公开(公告)日：2014-09-09
申请号：US13059463
申请日：2009-08-05
申请人： Ulrich Vollath
发明人： Ulrich Vollath
IPC分类号： G01S19/44
CPC分类号： G01S19/44
摘要： Methods and apparatus are provided for estimating parameters, i.e. ambiguities, derived from GNSS signals. Observations of a GNSS signal from each of a plurality of GNSS satellites are obtained (4120). The observations are fed to a filter having a state vector at least comprising a float ambiguity for each received frequency of the GNSS signals, each float ambiguity constituting a real number estimate associated with an integer number of wavelengths of the GNSS signal between a receiver of the GNSS signal and the GNSS satellite from which it is received, and the filter being for estimating a float value for each float ambiguity of the state vector (4140). A subset of float ambiguities of the state vector is selected (4150). Integer values are assigned to the estimated float values of the float ambiguities of the subset to define a plurality of integer ambiguity candidate sets (4160). A quality measure is determined for each of the candidate sets. A weighted average of the candidate sets is formed (4200). Ambiguities of the weighted average can be used in subsequent operations to aid in determining a position of the receiver or can be used to prepare data, e.g., in a network processor that can be used to augment position information of a rover.
摘要翻译： 提供了用于估计从GNSS信号导出的参数，即模糊度的方法和装置。 获得来自多个GNSS卫星中的每一个的GNSS信号的观察（4120）。 将观测值馈送到具有对于GNSS信号的每个接收频率至少包括浮点模糊度的状态向量的滤波器，每个浮点模糊度构成与在GNSS信号的接收机之间的GNSS信号的整数个波长相关联的实数估计 GNSS信号和从其接收的GNSS卫星，并且所述滤波器用于估计所述状态向量（4140）的每个浮点模糊度的浮点值。 选择状态向量的浮点模糊度的子集（4150）。 将整数值分配给子集的浮点模糊度的估计浮点值，以定义多个整数模糊度候选集（4160）。 确定每个候选组的质量度量。 形成候选集的加权平均值（4200）。 可以在随后的操作中使用加权平均值的不确定性来帮助确定接收机的位置，或者可以用于准备数据，例如在网络处理器中，该网络处理器可用于增加流动站的位置信息。
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10.发明授权公开(公告)号：US08704709B2
公开(公告)日：2014-04-22
申请号：US13059428
申请日：2009-08-05
IPC分类号： G01S19/44
CPC分类号： G01S19/44
摘要： Methods and apparatus are provided for estimating parameters, i.e. ambiguities, derived from GNSS signals. Observations of each of received frequencies of a GNSS signal from a plurality of GNSS satellites are obtained for a plurality of instances in time (3120). The time sequence of observations is fed to a filter to estimate a state vector comprising float ambiguities, wherein each float ambiguity constitutes a non integer estimate of an integer number of wavelengths for a received frequency of a GNSS signal between a receiver of the GNSS signal and the GNSS satellite from which it is received and wherein the float ambiguities of the state vector are updated over time on the basis of the observations (3140). The occurrence of an interruption in tracking of at least one signal of a satellite is determined (3121). The float ambiguity of the state vector for the at least one signal for which an interruption in tracking occurred is maintained at the value before the interruption in tracking occurred (3122). Integer values are assigned to at least a subgroup of the estimated float values to define a plurality of integer ambiguity candidate sets (3160). A quality measure is determined for each of the candidate sets. A weighted average of the candidate sets is formed (3200). Ambiguities of the weighted average can be used in subsequent operations to aid in determining a position of the receiver or can be used to prepare data, e.g., in a network processor that can be used to augment position information of a rover.
摘要翻译： 提供了用于估计从GNSS信号导出的参数，即模糊度的方法和装置。 在多个时间（3120）中获得来自多个GNSS卫星的GNSS信号的每个接收频率的观察。 将观测的时间序列馈送到滤波器以估计包括浮点模糊度的状态向量，其中每个浮点模糊度构成GNSS信号的接收机与GNSS信号的接收频率的接收频率的整数个波长的非整数估计，以及 接收GNSS卫星并且其中根据观测值（3140）随时间更新状态向量的浮点模糊度。 确定跟踪卫星的至少一个信号的中断的发生（3121）。 跟踪发生中断的至少一个信号的状态向量的浮点模糊度维持在跟踪发生中断之前的值（3122）。 将整数值分配给估计浮点值的至少一个子组以定义多个整数模糊度候选集（3160）。 确定每个候选组的质量度量。 形成候选集的加权平均值（3200）。 可以在随后的操作中使用加权平均值的不确定性来帮助确定接收机的位置，或者可以用于准备数据，例如在网络处理器中，该网络处理器可用于增加流动站的位置信息。
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