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公开(公告)号：USD643129S1
公开(公告)日：2011-08-09
申请号：US29384808
申请日：2011-02-04
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公开(公告)号：USD591599S1
公开(公告)日：2009-05-05
申请号：US29301269
申请日：2008-02-20
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公开(公告)号：USD509301S1
公开(公告)日：2005-09-06
申请号：US29198092
申请日：2004-01-23
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24.发明授权Method and receiver using a low earth orbiting satellite signal to augment the global positioning system 失效使用低地球轨道卫星信号的方法和接收机来增强全球定位系统
公开(公告)号：US5944770A
公开(公告)日：1999-08-31
申请号：US969350
申请日：1997-11-28
IPC分类号： G01S1/00 , G01S5/14 , G01S19/07 , G01S19/11 , G01S19/12 , G01S19/31 , H04B7/185 , G06F165/00 , G01S5/02
CPC分类号： G01S19/44 , G01S19/04 , H04B7/18552
摘要： A method and an apparatus using a low Earth orbiting (LEO) satellite signal to augment the Global Positioning System (GPS) for finding a location vector between a GPS user receiver and a GPS reference receiver. The GPS user receiver computes a LEO user-reference carrier phase difference and a GPS user-reference carrier phase difference for the LEO satellite signal and a GPS satellite signal, respectively, received simultaneously at the GPS user receiver and the GPS reference receiver. Carrier phase double differences are computed from a difference between the GPS user-reference carrier phases from two GPS satellites and either the LEO user-reference carrier phases from two LEO satellites or the GPS user-reference carrier phase from one GPS satellite and the LEO user-reference carrier phase from one LEO satellite. The location vector is computed from a difference between the double differences for two satellite geometries. The GPS reference receiver communicates the reference carrier phase data to the GPS user receiver through the LEO satellite. An ionospheric delay model is determined by tracking the LEO satellite signal as the LEO satellite traverses the sky. An optional calibrator corrects for measurement delay in determining the carrier phases in the GPS user receiver and the GPS reference receiver.
摘要翻译： 一种使用低地球轨道（LEO）卫星信号来增加全球定位系统（GPS）以在GPS用户接收机和GPS参考接收机之间找到位置矢量的方法和装置。 GPS用户接收机分别计算在GPS用户接收机和GPS参考接收机上同时接收的LEO卫星信号和GPS卫星信号的LEO用户参考载波相位差和GPS用户参考载波相位差。 从两个GPS卫星的GPS用户参考载波相位和来自两个LEO卫星的LEO用户参考载波相位或来自一个GPS卫星的GPS用户参考载波相位和LEO用户之间的差异计算载波相位差 - 一个LEO卫星的参考载波相位。 位置矢量是根据两个卫星几何的双重差异之差计算的。 GPS参考接收机通过LEO卫星将参考载波相位数据传送给GPS用户接收机。 电离层延迟模型是通过LEO卫星穿越天空跟踪LEO卫星信号来确定的。 可选的校准器校正GPS用户接收机和GPS参考接收机中确定载波相位的测量延迟。
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25.发明授权Method and reciever using a low earth orbiting satellite signal to augment the global positioning system 失效使用低地球轨道卫星信号的方法和接收来增强全球定位系统
公开(公告)号：US5812961A
公开(公告)日：1998-09-22
申请号：US580504
申请日：1995-12-28
IPC分类号： G01S1/00 , G01S5/14 , G01S19/07 , G01S19/11 , G01S19/12 , G01S19/31 , H04B7/185 , G06F165/00 , G01S5/02
CPC分类号： G01S19/44 , G01S19/04 , H04B7/18552
摘要： A method and an apparatus using a low Earth orbiting (LEO) satellite signal to augment the Global Positioning System (GPS) for finding a location vector between a GPS user receiver and a GPS reference receiver. The GPS user receiver computes a LEO user-reference carrier phase difference and a GPS user-reference carrier phase difference for the LEO satellite signal and a GPS satellite signal, respectively, received simultaneously at the GPS user receiver and the GPS reference receiver. Carrier phase double differences are computed from a difference between the GPS user-reference carrier phases from two GPS satellites and either the LEO user-reference carrier phases from two LEO satellites or the GPS user-reference carrier phase from one GPS satellite and the LEO user-reference carrier phase from one LEO satellite. The location vector is computed from a difference between the double differences for two satellite geometries. The GPS reference receiver communicates the reference carrier phase data to the GPS user receiver through the LEO satellite. An ionospheric delay model is determined by tracking the LEO satellite signal as the LEO satellite traverses the sky. An optional calibrator corrects for measurement delay in determining the carrier phases in the GPS user receiver and the GPS reference receiver.
摘要翻译： 一种使用低地球轨道（LEO）卫星信号来增加全球定位系统（GPS）以在GPS用户接收机和GPS参考接收机之间找到位置矢量的方法和装置。 GPS用户接收机分别计算在GPS用户接收机和GPS参考接收机上同时接收的LEO卫星信号和GPS卫星信号的LEO用户参考载波相位差和GPS用户参考载波相位差。 从两个GPS卫星的GPS用户参考载波相位和来自两个LEO卫星的LEO用户参考载波相位或来自一个GPS卫星的GPS用户参考载波相位和LEO用户之间的差异计算载波相位差 - 一个LEO卫星的参考载波相位。 位置矢量是根据两个卫星几何的双重差异之差计算的。 GPS参考接收机通过LEO卫星将参考载波相位数据传送给GPS用户接收机。 电离层延迟模型是通过LEO卫星穿越天空跟踪LEO卫星信号来确定的。 可选的校准器校正GPS用户接收机和GPS参考接收机中确定载波相位的测量延迟。
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公开(公告)号：US09651677B2
公开(公告)日：2017-05-16
申请号：US14002332
申请日：2012-03-11
摘要： Methods and apparatus provide for positioning of a rover antenna from GNSS data derived from multi-frequency signals and correction data derived from a network of reference stations. Rover antenna position and multi-frequency ambiguities are estimated at each epoch. An ionospheric filter models variation in ionospheric bias per satellite. A set of ionospheric carrier-phase ambiguities is estimated at least when the multi-frequency ambiguities have attained a predetermined precision. The estimated ionospheric carrier-phase ambiguities are cached. After detecting interruption of signal at the rover antenna and determining reacquisition of signals at the rover antenna, an ionospheric bias per satellite over an interruption interval is predicted. For each satellite, a cached ionospheric carrier-phase ambiguity is combined with a predicted ionospheric bias to obtain a post-interruption ionospheric ambiguity estimate. The post-interruption ionospheric ambiguity estimates are used to aid estimation of rover antenna position after signal reacquisition.
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27.发明授权公开(公告)号：US09562975B2
公开(公告)日：2017-02-07
申请号：US14002721
申请日：2012-03-19
摘要： Methods and apparatus for processing of GNSS signals are presented. These include GNSS processing with predicted precise clocks, GNSS processing with mixed-quality data, GNSS processing with time-sequence maintenance, GNSS processing with reduction of position jumps in low-latency solutions, GNSS processing with position blending to bridge reference station changes, and GNSS processing with delta-phase correction for incorrect starting position.
摘要翻译： 提出了GNSS信号处理方法和装置。 这些包括具有预测精确时钟的GNSS处理，具有混合质量数据的GNSS处理，具有时间序列维护的GNSS处理，具有降低低延迟解决方案中的位置跳转的GNSS处理，具有位置混合的GNSS处理以桥接参考站变化，以及 具有不正确起始位置的三角相位校正的GNSS处理。
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28.发明授权公开(公告)号：US08614642B2
公开(公告)日：2013-12-24
申请号：US13143194
申请日：2010-02-16
IPC分类号： G01S19/33
摘要： Methods and apparatus are provided for processing a set of GNSS signal data derived from signals of a first set of satellites having at least three carriers and signals of a second set of satellites having two carriers. A geometry filter uses a geometry filter combination to obtain an array of geometry-filter ambiguity estimates for the geometry filter combination and associated statistical information. Ionosphere filters use a two-frequency ionospheric combination to obtain an array of ionosphere-filter ambiguity estimates for the two-frequency ionospheric combinations and associated statistical information. Each two-frequency ionospheric combination comprises a geometry-free two-frequency ionospheric residual carrier-phase combination of observations of a first frequency and observations of a second frequency. Auxiliary ionosphere filters use an auxiliary ionospheric combination to obtain an array of auxiliary-ionosphere-filter ambiguity estimates for the auxiliary ionospheric combinations and associated statistical information. Each auxiliary ionospheric combination uses carrier-phase observations of a third frequency and carrier-phase observations of at least one of the first frequency and the second frequency. A combined array of ambiguity estimates is prepared for all carrier phase observations and associated statistical information by combining the arrays of the geometry filter and the ionosphere filters and the auxiliary ionosphere filters.
摘要翻译： 提供了用于处理从具有至少三个载波的第一组卫星和具有两个载波的第二组卫星的信号的信号导出的一组GNSS信号数据的方法和装置。 几何过滤器使用几何过滤器组合来获取几何过滤器组合和关联统计信息的几何过滤模糊度估计数组。 电离层滤波器使用双频电离层组合来获得两频电离层组合和相关统计信息的电离层滤波器模糊度估计数组。 每个两频电离层组合包括第一频率观测值和第二频率观测值的几何无二相电离层剩余载波相位组合。 辅助电离层滤波器使用辅助电离层组合来获得辅助电离层组合和相关统计信息的辅助电离层 - 滤波器模糊度估计阵列。 每个辅助电离层组合使用第三频率的载波相位观测和至少一个第一频率和第二频率的载波相位观测。 通过组合几何滤波器和电离层滤波器的阵列和辅助电离层滤波器，为所有载波相位观测和相关的统计信息准备了模糊度估计的组合阵列。
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29.发明授权GNSS signal processing methods and apparatus with ambiguity convergence indication 有权具有模糊收敛指示的GNSS信号处理方法和装置公开(公告)号：US08368591B2
公开(公告)日：2013-02-05
申请号：US13059416
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 a GNSS signal from each of a plurality of GNSS satellites are obtained (2120). The observations are fed to a filter having a state vector comprising a float ambiguity for each received frequency of the GNSS signals (2140). The filter estimates a float value for each float ambiguity of the state vector and co-variance values associated with the state vector. Integer values are assigned to at least a subgroup of the estimated float values to define a plurality of integer ambiguity candidate sets (2160). A weighted average of the candidate sets is formed (2200). A formal precision value based on covariance values of the filter is determined (2205), the formal precision value being a measure for an achievable precision. An achieved precision value of the weighted average is determined (2210). The achieved precision value is compared with the formal precision value to obtain a convergence value (2215). A convergence of the determination of the state vector is indicated (2218). 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（2120）。 将观测值馈送到具有针对GNSS信号（2140）的每个接收频率的浮点模糊度的状态向量的滤波器。 滤波器估计与状态向量相关联的状态向量和协方差值的每个浮点模糊度的浮点值。 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（2160）。 形成候选集的加权平均值（2200）。 确定基于滤波器的协方差值的正式精度值（2205），形式精度值是可实现精度的度量。 确定加权平均精度值（2210）。 将实现的精度值与形式精度值进行比较以获得收敛值（2215）。 指示状态向量的确定的收敛（2218）。 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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30.发明申请GNSS Signal Processing Methods and Apparatus with Ambiguity Convergence Indication 有权具有模糊收敛指示的GNSS信号处理方法和装置公开(公告)号：US20110267226A1
公开(公告)日：2011-11-03
申请号：US13059416
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 a GNSS signal from each of a plurality of GNSS satellites are obtained (2120). The observations are fed to a filter having a state vector comprising a float ambiguity for each received frequency of the GNSS signals (2140). The filter estimates a float value for each float ambiguity of the state vector and co-variance values associated with the state vector. Integer values are assigned to at least a subgroup of the estimated float values to define a plurality of integer ambiguity candidate sets (2160). A weighted average of the candidate sets is formed (2200). A formal precision value based on covariance values of the filter is determined (2205), the formal precision value being a measure for an achievable precision. An achieved precision value of the weighted average is determined (2210). The achieved precision value is compared with the formal precision value to obtain a convergence value (2215). A convergence of the determination of the state vector is indicated (2218). 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（2120）。 将观测值馈送到具有针对GNSS信号（2140）的每个接收频率的浮点模糊度的状态向量的滤波器。 滤波器估计与状态向量相关联的状态向量和协方差值的每个浮点模糊度的浮点值。 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（2160）。 形成候选集的加权平均值（2200）。 确定基于滤波器的协方差值的正式精度值（2205），形式精度值是可实现精度的度量。 确定加权平均精度值（2210）。 将实现的精度值与形式精度值进行比较以获得收敛值（2215）。 指示状态向量的确定的收敛（2218）。 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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