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1. 发明授权

US09423507B2 Methods and apparatuses for multipath estimation and correction in GNSS navigation systems 有权
标题翻译： GNSS导航系统中多路径估计和校正的方法和装置
公开(公告)号：US09423507B2
公开(公告)日：2016-08-23
申请号：US13484217
申请日：2012-05-30
申请人： Xiangdong Lin , David Allan Tuck , Mangesh Chansarkar
发明人： Xiangdong Lin , David Allan Tuck , Mangesh Chansarkar
IPC分类号： G01S19/42 , G01S19/22 , G01S19/40
CPC分类号： G01S19/428 , G01S19/22 , G01S19/40
摘要： The present invention relates generally to methods and apparatuses for estimating and correcting for multipath in GNSS navigation systems. According to some aspects, the invention operates in situations where position and estimated position error are reasonably stable so as to detect when large multipath errors are present with confidence. After detection, the slowly varying biases from multipath or other un-modeled sources can be modeled separately from the navigation state. The measurements are kept in the solution without biasing the navigation state thereby ignoring the long-term biases for use over short-term periods with minimized pseudorange error when necessary.
摘要翻译：本发明一般涉及用于在GNSS导航系统中估计和校正多路径的方法和装置。根据一些方面，本发明在位置和估计位置误差相当稳定的情况下操作，以便在信心大的多径误差存在时检测。在检测之后，可以与导航状态分开地建模来自多路径或其他未建模源的缓慢变化的偏差。测量结果保留在解决方案中，而不会偏离导航状态，从而忽略在需要时具有最小化伪距误差的短期周期使用的长期偏差。

2. 发明申请

US20130321202A1 Methods and Apparatuses for Multipath Estimation and Correction in GNSS Navigation Systems 有权
标题翻译： GNSS导航系统中多径估计和校正的方法与装置
公开(公告)号：US20130321202A1
公开(公告)日：2013-12-05
申请号：US13484217
申请日：2012-05-30
申请人： Xiangdong Lin , David Allan Tuck , Mangesh Chansarkar
发明人： Xiangdong Lin , David Allan Tuck , Mangesh Chansarkar
IPC分类号： G01S19/22
CPC分类号： G01S19/428 , G01S19/22 , G01S19/40
摘要： The present invention relates generally to methods and apparatuses for estimating and correcting for multipath in GNSS navigation systems. According to some aspects, the invention takes advantage of situations where position and estimated position error are reasonably stable so as to detect when large multipath errors are present with confidence. After detection, the slowly varying biases from multipath or other un-modeled sources can be modeled separately from the navigation state. This makes it possible to keep the measurements in the solution without biasing the navigation state and further ignores the long-term biases for use over short-term periods with minimized pseudorange error when necessary.
摘要翻译：本发明一般涉及用于在GNSS导航系统中估计和校正多路径的方法和装置。根据一些方面，本发明利用了位置和估计位置误差相当稳定的情况，以便可靠地存在大的多径错误时的检测。在检测之后，可以与导航状态分开地建模来自多路径或其他未建模源的缓慢变化的偏差。这使得可以将测量结果保持在解决方案中，而不会偏离导航状态，并且进一步忽略在短期内使用的长期偏差，在必要时具有最小化的伪距误差。

3. 发明授权

US08442763B2 Method and apparatus for geographically aiding navigation satellite system solution 有权
标题翻译：导航卫星系统解决方案和方法
公开(公告)号：US08442763B2
公开(公告)日：2013-05-14
申请号：US12762060
申请日：2010-04-16
申请人： David Allan Tuck , Mangesh Chansarkar , Ardalan Heshmati
发明人： David Allan Tuck , Mangesh Chansarkar , Ardalan Heshmati
IPC分类号： G01C21/30
CPC分类号： G01C21/30
摘要： The present invention is related to position calculation and navigation systems, and more particularly, to a method and apparatus for making accuracy improvements to a GPS receiver's navigation solutions. According to a first aspect, selective cartography information from a map database accessed by a GPS receiver from a location-aiding device is integrated into the position calculations performed by the GPS receiver. According to another aspect, selective cartography information includes indices representing associated attributes of geographical objects, such as, a width-indicator index for a road segment.
摘要翻译：本发明涉及位置计算和导航系统，更具体地说，涉及一种用于对GPS接收机的导航解决方案进行精度改进的方法和装置。根据第一方面，从GPS接收器从位置辅助设备访问的地图数据库的选择性制图信息被集成到由GPS接收机执行的位置计算中。根据另一方面，选择性地图信息包括表示地理对象的相关属性的索引，例如道路段的宽度指示符索引。

4. 发明申请

US20110257885A1 METHOD AND APPARATUS FOR GEOGRAPHICALLY AIDING NAVIGATION SATELLITE SYSTEM SOLUTION 有权
标题翻译：地理信息导航卫星系统解决方案的方法与装置
公开(公告)号：US20110257885A1
公开(公告)日：2011-10-20
申请号：US12762060
申请日：2010-04-16
申请人： David Allan Tuck , Mangesh Chansarkar , Ardalan Heshmati
发明人： David Allan Tuck , Mangesh Chansarkar , Ardalan Heshmati
IPC分类号： G01C21/00
CPC分类号： G01C21/30
摘要： The present invention is related to position calculation and navigation systems, and more particularly, to a method and apparatus for making accuracy improvements to a GPS receiver's navigation solutions. According to a first aspect, selective cartography information from a map database accessed by a GPS receiver from a location-aiding device is integrated into the position calculations performed by the GPS receiver. According to another aspect, selective cartography information includes indices representing associated attributes of geographical objects, such as, a width-indicator index for a road segment.
摘要翻译：本发明涉及位置计算和导航系统，更具体地说，涉及一种用于对GPS接收机的导航解决方案进行精度改进的方法和装置。根据第一方面，从GPS接收器从位置辅助设备访问的地图数据库的选择性制图信息被集成到由GPS接收机执行的位置计算中。根据另一方面，选择性地图信息包括表示地理对象的相关属性的索引，例如道路段的宽度指示符索引。

5. 发明授权

US07751974B2 Navigation processing for a satellite positioning system receiver 失效
标题翻译：卫星定位系统接收机的导航处理
公开(公告)号：US07751974B2
公开(公告)日：2010-07-06
申请号：US11083077
申请日：2005-03-17
申请人： Keith Jacob Brodie , David Allan Tuck , Mangesh M. Chansarkar
发明人： Keith Jacob Brodie , David Allan Tuck , Mangesh M. Chansarkar
IPC分类号： G01S1/00
CPC分类号： G01S19/42 , G01S19/34 , G01S19/50
摘要： A method for navigation processing in a satellite positioning system receiver is disclosed. A method in accordance with the present invention comprises separating the three SATPS satellites into a first pair and a second pair, constructing a primary solution and an alternate solution, wherein the primary solution and the alternate solution satisfy the measurement constraints, computing a Doppler difference estimate for the primary solution and a Doppler difference estimate for the alternate solution, computing Doppler difference residuals for the first pair and the second pair of SATPS satellites, and comparing the Doppler difference residuals for said primary and alternate solutions to determine a valid solution. Typically, the computing of a Doppler difference residuals comprises differencing a measured Doppler difference from an estimated Doppler difference for the first pair and the second pair of SATPS satellites. Typical determination of a valid solution comprises comparing the difference between the Doppler difference residuals to a predetermined number. Usually when the Doppler difference residuals exceed the predetermined number, the alternate solution is selected as the valid solution.
摘要翻译：公开了一种用于卫星定位系统接收机中的导航处理的方法。根据本发明的方法包括将三个SATPS卫星分离成第一对和第二对，构建主要解决方案和替代解决方案，其中主要解决方案和替代解决方案满足测量约束，计算多普勒差值估计对于主要解决方案和用于替代解决方案的多普勒差值估计，计算第一对和第二对SATPS卫星的多普勒差值残差，以及比较所述主要和替代解的多普勒差值残差以确定有效解决方案。通常，多普勒差值残差的计算包括将测量的多普勒差与第一对和第二对SATPS卫星的估计多普勒差异进行差分。有效解决方案的典型确定包括将多普勒差值残差与预定数量进行比较。通常当多普勒差值残差超过预定值时，选择替代解作为有效解。

6. 发明授权

US06885940B2 Navigation processing for a satellite positioning system receiver 失效
公开(公告)号：US06885940B2
公开(公告)日：2005-04-26
申请号：US10690978
申请日：2003-10-21
申请人： Keith Jacob Brodie , David Allan Tuck , Mangesh M. Chansarkar
发明人： Keith Jacob Brodie , David Allan Tuck , Mangesh M. Chansarkar
IPC分类号： G01S19/46 , G01C21/26 , G01S1/00 , G01S5/14 , G01S19/11 , G01S19/48 , G06F165/00 , G01S5/02
CPC分类号： G01S19/42 , G01S19/34 , G01S19/50
摘要： A method for navigation processing in a satellite positioning system receiver is disclosed. A method in accordance with the present invention comprises separating the three SATPS satellites into a first pair and a second pair, constructing a primary solution and an alternate solution, wherein the primary solution and the alternate solution satisfy the measurement constraints, computing a Doppler difference estimate for the primary solution and a Doppler difference estimate for the alternate solution, computing Doppler difference residuals for the first pair and the second pair of SATPS satellites, and comparing the Doppler difference residuals for said primary and alternate solutions to determine a valid solution. Typically, the computing of a Doppler difference residuals comprises differencing a measured Doppler difference from an estimated Doppler difference for the first pair and the second pair of SATPS satellites. Typical determination of a valid solution comprises comparing the difference between the Doppler difference residuals to a predetermined number. Usually when the Doppler difference residuals exceed the predetermined number, the alternate solution is selected as the valid solution.

7. 发明授权

US07251562B1 Network assisted pseudolite acquisition for enhanced GPS navigation 有权
标题翻译：网络辅助伪卫星获取增强型GPS导航
公开(公告)号：US07251562B1
公开(公告)日：2007-07-31
申请号：US10385301
申请日：2003-03-10
申请人： Keith Jacob Brodie , David Allan Tuck
发明人： Keith Jacob Brodie , David Allan Tuck
IPC分类号： G01C1/00
CPC分类号： G01S19/11 , G01C21/206 , G01C21/28 , G01S5/0045 , G01S19/258
摘要： The invention comprises a set of pseudolites deployed throughout an area of interest in which the GPS constellation visibility may be limited, such as in and around some high-rise buildings in an urban setting, and a database of these installed pseudolite locations with their PRN numbers indexed by cell-site. When the cellular telephone is in communication with a particular tower or transceiver, the PRN numbers of all local pseudolites are transmitted to the cellular telephone. If the cellular telephone has a position solution which has been transmitted to the cell tower, prepositioning information for a code search can be transmitted to the phone as well. The phone can then augment the phone's normal acquisition list with the pseudolites in the area and track the pseudolites to augment navigation capabilities in a harsh environment.
摘要翻译：本发明包括在整个感兴趣的区域中部署的一组伪卫星，其中GPS星座的可视性可能被限制，例如在城市环境中的一些高层建筑物内和周围，以及这些安装的伪卫星位置的数据库，其PRN号码由单元格索引。当蜂窝电话与特定的塔或收发器通信时，所有本地伪卫星的PRN号码被发送到蜂窝电话。如果蜂窝电话具有已经发送到小区塔的位置解决方案，则也可以将用于代码搜索的预定位信息发送到电话。然后，手机可以通过该区域的伪卫星增加手机的正常采集列表，并跟踪伪卫星，以增强恶劣环境中的导航功能。

8. 发明授权

US06597988B1 Network assisted pseudolite acquisition for enhanced GPS navigation 有权
标题翻译：网络辅助伪卫星获取增强型GPS导航
公开(公告)号：US06597988B1
公开(公告)日：2003-07-22
申请号：US09960828
申请日：2001-09-21
申请人： Keith Jacob Brodie , David Allan Tuck
发明人： Keith Jacob Brodie , David Allan Tuck
IPC分类号： G01C100
CPC分类号： G01S19/11 , G01C21/206 , G01C21/28 , G01S5/0045 , G01S19/258
摘要： The invention comprises a set of pseudolites deployed throughout an area of interest in which the GPS constellation visibility may be limited, such as in and around some high-rise buildings in an urban setting, and a database of these installed pseudolite locations with their PRN numbers indexed by cell-site. When the cellular telephone is in communication with a particular tower or transceiver, the PRN numbers of all local psuedolites are transmitted to the cellular telephone. If the cellular telephone has a position solution which has been transmitted to the cell tower, prepositioning information for a code search can be transmitted to the phone as well. The phone can then augment the phone's normal acquisition list with the psuedolites in the area and track the pseudolites to augment navigation capabilities in a harsh environment.
摘要翻译：本发明包括在整个感兴趣的区域中部署的一组伪卫星，其中GPS星座的可视性可能被限制，例如在城市环境中的一些高层建筑物内和周围，以及这些安装的伪卫星位置的数据库，其PRN号码由单元格索引。当蜂窝电话与特定的塔或收发器进行通信时，所有本地伪随机的PRN号码被发送到蜂窝电话。如果蜂窝电话具有已经发送到小区塔的位置解决方案，则也可以将用于代码搜索的预定位信息发送到电话。然后，手机可以通过该区域中的psuedolites增加手机的正常采集列表，并跟踪伪卫星，以增强恶劣环境中的导航功能。

9. 发明授权

US06665612B1 Navigation processing for a satellite positioning system receiver 有权
标题翻译：卫星定位系统接收机的导航处理
公开(公告)号：US06665612B1
公开(公告)日：2003-12-16
申请号：US09943071
申请日：2001-08-29
申请人： Keith Jacob Brodie , David Allan Tuck , Mangesh M. Chansarkar
发明人： Keith Jacob Brodie , David Allan Tuck , Mangesh M. Chansarkar
IPC分类号： G06F16500
CPC分类号： G01S19/42 , G01S19/34 , G01S19/50
摘要： A method for navigation processing in a satellite positioning system receiver is disclosed. A method in accordance with the present invention comprises separating the three SATPS satellites into a first pair and a second pair, constructing a primary solution and an alternate solution, wherein the primary solution and the alternate solution satisfy the measurement constraints, computing a Doppler difference estimate for the primary solution and a Doppler difference estimate for the alternate solution, computing Doppler difference residuals for the first pair and the second pair of SATPS satellites, and comparing the Doppler difference residuals for said primary and alternate solutions to determine a valid solution. Typically, the computing of a Doppler difference residuals comprises differencing a measured Doppler difference from an estimated Doppler difference for the first pair and the second pair of SATPS satellites. Typical determination of a valid solution comprises comparing the difference between the Doppler difference residuals to a predetermined number. Usually when the Doppler difference residuals exceed the predetermined number, the alternate solution is selected as the valid solution.
摘要翻译：公开了一种用于卫星定位系统接收机中的导航处理的方法。根据本发明的方法包括将三个SATPS卫星分离成第一对和第二对，构建主要解决方案和替代解决方案，其中主要解决方案和替代解决方案满足测量约束，计算多普勒差值估计对于主要解决方案和用于替代解决方案的多普勒差值估计，计算第一对和第二对SATPS卫星的多普勒差值残差，以及比较所述主要和替代解的多普勒差值残差以确定有效解决方案。通常，多普勒差值残差的计算包括将测量的多普勒差与针对第一对和第二对SATPS卫星的估计多普勒差异进行差分。有效解决方案的典型确定包括将多普勒差值残差与预定数量进行比较。通常当多普勒差值残差超过预定值时，选择替代解作为有效解。

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