公开(公告)号：US07636060B2

公开(公告)日：2009-12-22

申请号：US11620303

申请日：2007-01-05

申请人： Kuan-i Li ,  Kung-shuan Huang ,  Kun-tso Chen

发明人： Kuan-i Li ,  Kung-shuan Huang ,  Kun-tso Chen

IPC分类号： G01S1/00

CPC分类号： H04L1/08 ,  G01S19/24

摘要： A method and apparatus for collecting subframes of navigation data of satellites are disclosed. In the method of the present invention, the subframe is divided into several sub-units, each sub-units includes one or more words. When a receiver receives a subframe with a subframe ID, the respective required sub-units of the subframe are checked. A dummy sub-unit is not necessary to be considered. Valid ones of the required sub-units are collected. If not all the required sub-units of the subframe have been collected, the absent sub-units are to be collected when the next subframe with the same subframe ID is received. Some protection schemes can be applied to raise the reliability of such sub-unit collection. Especially when the signal is weak or unstable, the present invention may significantly improve the TTFF (Time To First Fix) performance of the receiver.

摘要翻译： 公开了一种收集卫星导航数据子帧的方法和装置。 在本发明的方法中，子帧被分成若干子单元，每个子单元包括一个或多个单词。 当接收器接收到具有子帧ID的子帧时，检查子帧的各个所要求的子单元。 虚拟子单元不需要考虑。 收集有效的所需子单位。 如果不是所有子帧的所有子单元被收集，则当接收到具有相同子帧ID的下一个子帧时，将不存在缺少的子单元。 可以采用一些保护方案来提高这种子单元收集的可靠性。 特别是当信号较弱或不稳定时，本发明可以显着改善接收机的TTFF（首次修复时间）性能。

公开(公告)号：US20100045527A1

公开(公告)日：2010-02-25

申请号：US12611361

申请日：2009-11-03

申请人： Kuan-i Li ,  Kung-shuan Huang ,  Kun-tso Chen

发明人： Kuan-i Li ,  Kung-shuan Huang ,  Kun-tso Chen

IPC分类号： G01S19/27

CPC分类号： H04L1/08 ,  G01S19/24

摘要： A method and apparatus for collecting subframes of navigation data of satellites are disclosed. In the method of the present invention, the subframe is divided into several sub-units, each sub-units includes one or more words. When a receiver receives a subframe with a subframe ID, the respective required sub-units of the subframe are checked. A dummy sub-unit is not necessary to be considered. Valid ones of the required sub-units are collected. If not all the required sub-units of the subframe have been collected, the absent sub-units are to be collected when the next subframe with the same subframe ID is received. Some protection schemes can be applied to raise the reliability of such sub-unit collection. Especially when the signal is weak or unstable, the present invention may significantly improve the TTFF (Time To First Fix) performance of the receiver.

摘要翻译： 公开了一种收集卫星导航数据子帧的方法和装置。 在本发明的方法中，子帧被分成若干子单元，每个子单元包括一个或多个单词。 当接收器接收到具有子帧ID的子帧时，检查子帧的各个所要求的子单元。 虚拟子单元不需要考虑。 收集有效的所需子单位。 如果不是所有子帧的所有子单元被收集，则当接收到具有相同子帧ID的下一个子帧时，将不存在缺少的子单元。 可以采用一些保护方案来提高这种子单元收集的可靠性。 特别是当信号较弱或不稳定时，本发明可以显着改善接收机的TTFF（首次修复时间）性能。

公开(公告)号：US20080165057A1

公开(公告)日：2008-07-10

申请号：US11620303

申请日：2007-01-05

申请人： Kuan-i Li ,  Kung-shuan Huang ,  Kun-tso Chen

发明人： Kuan-i Li ,  Kung-shuan Huang ,  Kun-tso Chen

IPC分类号： G01S5/14

CPC分类号： H04L1/08 ,  G01S19/24

摘要： A method and apparatus for collecting subframes of navigation data of satellites are disclosed. In the method of the present invention, the subframe is divided into several sub-units, each sub-units includes one or more words. When a receiver receives a subframe with a subframe ID, the respective required sub-units of the subframe are checked. A dummy sub-unit is not necessary to be considered. Valid ones of the required sub-units are collected. If not all the required sub-units of the subframe have been collected, the absent sub-units are to be collected when the next subframe with the same subframe ID is received. Some protection schemes can be applied to raise the reliability of such sub-unit collection. Especially when the signal is weak or unstable, the present invention may significantly improve the TTFF (Time To First Fix) performance of the receiver.

摘要翻译： 公开了一种收集卫星导航数据子帧的方法和装置。 在本发明的方法中，子帧被分成若干子单元，每个子单元包括一个或多个单词。 当接收器接收到具有子帧ID的子帧时，检查子帧的各个所要求的子单元。 虚拟子单元不需要考虑。 收集有效的所需子单位。 如果不是所有子帧的所有子单元被收集，则当接收到具有相同子帧ID的下一个子帧时，将不存在缺少的子单元。 可以采用一些保护方案来提高这种子单元收集的可靠性。 特别是当信号较弱或不稳定时，本发明可以显着改善接收机的TTFF（首次修复时间）性能。

公开(公告)号：US20070229351A1

公开(公告)日：2007-10-04

申请号：US11392976

申请日：2006-03-28

申请人： Kun-tso Chen ,  Kung-shuan Huang

发明人： Kun-tso Chen ,  Kung-shuan Huang

IPC分类号： G01S5/14

CPC分类号： G01S19/28

摘要： A method for searching satellites in a cold start state. The method of the present invention, a first satellite, which is predetermined or randomly selected, is searched. Then, a second satellite to be searched is selected according to the searching result (hit or missed) for the first satellite and respective interrelationships between the first satellite and the other satellites. In practice, an initial weight factor table is provided. Depending on the searching result, the initial weight factor table is updated according to the interrelationships between the satellites during searching. By using the method of the present invention, the time-to-first-fix (TTFF) can be reduced to a shorter period of time so as to provide a rapid cold start satellite positioning.

摘要翻译： 一种用于在冷启动状态下搜索卫星的方法。 搜索本发明的方法，即预先确定或随机选择的第一卫星。 然后，根据第一卫星的搜索结果（命中或错过）以及第一卫星与其他卫星之间的相互关系来选择要搜索的第二卫星。 在实践中，提供了初始权重因子表。 根据搜索结果，初始权重因子表根据搜索期间卫星之间的相互关系进行更新。 通过使用本发明的方法，可以将时间到第一固定（TTFF）减少到更短的时间段，以便提供快速的冷启动卫星定位。

公开(公告)号：US07671796B2

公开(公告)日：2010-03-02

申请号：US11566009

申请日：2006-12-01

申请人： Kun-tso Chen ,  Kung-shuan Huang ,  Jan-shin Ho

发明人： Kun-tso Chen ,  Kung-shuan Huang ,  Jan-shin Ho

IPC分类号： G01S1/00 ,  G01S3/02

CPC分类号： G01S19/28

摘要： A method for searching satellites is disclosed. In the method of the present invention, the satellites are selected to consist of a group, and searching is conducted in this group. The group size is predetermined for each stage so as to be the most appropriate for various searching conditions. The member number of the group (i.e. group size) and the members of the group are updated as the searching results are continually obtained. The updates are done according to scanning times of the group, satellite hit number, searching time for the group and satellite priorities and the like, for example. The group size can be reduced or expanded. By using the method, satellites required to fix a position can be rapidly found.

摘要翻译： 公开了一种用于搜索卫星的方法。 在本发明的方法中，选择卫星组成一组，并在该组中进行搜索。 组的尺寸为每个阶段预先确定，以便适用于各种搜索条件。 随着连续获得搜索结果，更新组的成员编号（即组大小）和组的成员。 更新根据组的扫描时间，卫星命中次数，组的搜索时间和卫星优先级等来进行。 组大小可以减少或扩大。 通过使用该方法，可以快速找到固定位置所需的卫星。

公开(公告)号：US07796084B2

公开(公告)日：2010-09-14

申请号：US12563106

申请日：2009-09-18

申请人： Kun-tso Chen ,  Kung-shuan Huang

发明人： Kun-tso Chen ,  Kung-shuan Huang

IPC分类号： G01S1/00

CPC分类号： G01S19/28

摘要： A method for searching satellites in a cold start state. The method of the present invention, a first satellite, which is predetermined or randomly selected, is searched. Then, a second satellite to be searched is selected according to the searching result (hit or missed) for the first satellite and respective interrelationships between the first satellite and the other satellites. In practice, an initial weight factor table is provided. Depending on the searching result, the initial weight factor table is updated according to the interrelationships between the satellites during searching. By using the method of the present invention, the time-to-first-fix (TTFF) can be reduced to a shorter period of time so as to provide a rapid cold start satellite positioning.

摘要翻译： 一种用于在冷启动状态下搜索卫星的方法。 搜索本发明的方法，即预先确定或随机选择的第一卫星。 然后，根据第一卫星的搜索结果（命中或错过）以及第一卫星与其他卫星之间的相互关系来选择要搜索的第二卫星。 在实践中，提供了初始权重因子表。 根据搜索结果，初始权重因子表根据搜索期间卫星之间的相互关系进行更新。 通过使用本发明的方法，可以将时间到第一固定（TTFF）减少到更短的时间段，以便提供快速的冷启动卫星定位。

公开(公告)号：US07612714B2

公开(公告)日：2009-11-03

申请号：US11392976

申请日：2006-03-28

申请人： Kun-tso Chen ,  Kung-shuan Huang

发明人： Kun-tso Chen ,  Kung-shuan Huang

IPC分类号： G01S1/00

CPC分类号： G01S19/28

摘要： A method for searching satellites in a cold start state. The method of the present invention, a first satellite, which is predetermined or randomly selected, is searched. Then, a second satellite to be searched is selected according to the searching result (hit or missed) for the first satellite and respective interrelationships between the first satellite and the other satellites. In practice, an initial weight factor table is provided. Depending on the searching result, the initial weight factor table is updated according to the interrelationships between the satellites during searching. By using the method of the present invention, the time-to-first-fix (TTFF) can be reduced to a shorter period of time so as to provide a rapid cold start satellite positioning.

摘要翻译： 一种用于在冷启动状态下搜索卫星的方法。 搜索本发明的方法，即预先确定或随机选择的第一卫星。 然后，根据第一卫星的搜索结果（命中或错过）以及第一卫星与其他卫星之间的相互关系来选择要搜索的第二卫星。 在实践中，提供了初始权重因子表。 根据搜索结果，初始权重因子表根据搜索期间卫星之间的相互关系进行更新。 通过使用本发明的方法，可以将时间到第一固定（TTFF）减少到更短的时间段，以便提供快速的冷启动卫星定位。

公开(公告)号：US20100007556A1

公开(公告)日：2010-01-14

申请号：US12563106

申请日：2009-09-18

申请人： Kun-tso Chen ,  Kung-shuan Huang

发明人： Kun-tso Chen ,  Kung-shuan Huang

IPC分类号： G01S1/00

CPC分类号： G01S19/28

摘要： A method for searching satellites in a cold start state. The method of the present invention, a first satellite, which is predetermined or randomly selected, is searched. Then, a second satellite to be searched is selected according to the searching result (hit or missed) for the first satellite and respective interrelationships between the first satellite and the other satellites. In practice, an initial weight factor table is provided. Depending on the searching result, the initial weight factor table is updated according to the interrelationships between the satellites during searching. By using the method of the present invention, the time-to-first-fix (TTFF) can be reduced to a shorter period of time so as to provide a rapid cold start satellite positioning.

摘要翻译： 一种用于在冷启动状态下搜索卫星的方法。 搜索本发明的方法，即预先确定或随机选择的第一卫星。 然后，根据第一卫星的搜索结果（命中或错过）以及第一卫星与其他卫星之间的相互关系来选择要搜索的第二卫星。 在实践中，提供了初始权重因子表。 根据搜索结果，初始权重因子表根据搜索期间卫星之间的相互关系进行更新。 通过使用本发明的方法，可以将时间到第一固定（TTFF）减少到更短的时间段，以便提供快速的冷启动卫星定位。

公开(公告)号：US20070229352A1

公开(公告)日：2007-10-04

申请号：US11566009

申请日：2006-12-01

申请人： Kun-tso Chen ,  Kung-shuan Huang ,  Jan-shin Ho

发明人： Kun-tso Chen ,  Kung-shuan Huang ,  Jan-shin Ho

IPC分类号： G01S5/14

CPC分类号： G01S19/28

摘要： A method for searching satellites is disclosed. In the method of the present invention, the satellites are selected to consist of a group, and searching is conducted in this group. The group size is predetermined for each stage so as to be the most appropriate for various searching conditions. The member number of the group (i.e. group size) and the members of the group are updated as the searching results are continually obtained. The updates are done according to scanning times of the group, satellite hit number, searching time for the group and satellite priorities and the like, for example. The group size can be reduced or expanded. By using the method, satellites required to fix a position can be rapidly found.

摘要翻译： 公开了一种用于搜索卫星的方法。 在本发明的方法中，选择卫星组成一组，并在该组中进行搜索。 组的尺寸为每个阶段预先确定，以便适用于各种搜索条件。 随着连续获得搜索结果，更新组的成员编号（即组大小）和组的成员。 更新根据组的扫描时间，卫星命中次数，组的搜索时间和卫星优先级等来进行。 组大小可以减少或扩大。 通过使用该方法，可以快速找到固定位置所需的卫星。