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公开(公告)号：US08134501B2
公开(公告)日：2012-03-13
申请号：US13083498
申请日：2011-04-08
申请人： Gary Lennen , Makarand Phatak , William Kerry Keal
发明人： Gary Lennen , Makarand Phatak , William Kerry Keal
IPC分类号： G01S19/24
摘要： The present invention is related to location positioning systems, and more particularly, to a method and apparatus of synchronizing to data frames in a positioning system signal. According to one aspect, the invention speeds up the frame synchronization process by computing a frame synchronization metric for each satellite and then combining together the metrics for all tracked satellites together, after compensating for respective signal transit times. Then the invention makes a frame sync decision on the combined satellite metric. In embodiments, an optimal combining algorithm is used based on CNO of each satellite. According to further aspects, the invention further speeds up the frame synchronization process by predicting many bits in the subframe so that more bits are known in addition to the 8-bit preamble. For example, the invention recognizes that many bits in a subframe rarely change or don't change very often. Moreover, the invention uses old ephemeris used to predict new ephemeris parameters. These parameters are translated into predicted bits in the signal. Still further, old ephemeris can be used to predict almanac parameters, and the almanac can be used to predict ephemeris parameters.
摘要翻译： 本发明涉及位置定位系统，更具体地说，涉及一种与定位系统信号中的数据帧同步的方法和装置。 根据一个方面，本发明通过计算每个卫星的帧同步度量来加速帧同步过程，然后在补偿相应的信号传送时间之后将所有跟踪的卫星的度量组合在一起。 然后，本发明对组合的卫星度量做出帧同步决定。 在实施例中，基于每个卫星的CNO使用最佳组合算法。 根据另外的方面，本发明通过预测子帧中的多个比特来进一步加速帧同步过程，以便除了8比特前同步码之外还有更多比特是已知的。 例如，本发明认识到，子帧中的许多位很少改变或者不经常地改变。 此外，本发明使用用于预测新星历参数的旧星历。 这些参数被转换成信号中的预测位。 此外，旧星历可用于预测年历参数，历书可用于预测星历参数。
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公开(公告)号：US20110193742A1
公开(公告)日：2011-08-11
申请号：US13083498
申请日：2011-04-08
申请人： Gary Lennen , Makarand Phatak , William Kerry Keal
发明人： Gary Lennen , Makarand Phatak , William Kerry Keal
摘要： The present invention is related to location positioning systems, and more particularly, to a method and apparatus of synchronizing to data frames in a positioning system signal. According to one aspect, the invention speeds up the frame synchronization process by computing a frame synchronization metric for each satellite and then combining together the metrics for all tracked satellites together, after compensating for respective signal transit times. Then the invention makes a frame sync decision on the combined satellite metric. In embodiments, an optimal combining algorithm is used based on CNO of each satellite. According to further aspects, the invention further speeds up the frame synchronization process by predicting many bits in the subframe so that more bits are known in addition to the 8-bit preamble. For example, the invention recognizes that many bits in a subframe rarely change or don't change very often. Moreover, the invention uses old ephemeris used to predict new ephemeris parameters. These parameters are translated into predicted bits in the signal. Still further, old ephemeris can be used to predict almanac parameters, and the almanac can be used to predict ephemeris parameters.
摘要翻译： 本发明涉及位置定位系统，更具体地说，涉及一种与定位系统信号中的数据帧同步的方法和装置。 根据一个方面，本发明通过计算每个卫星的帧同步度量来加速帧同步过程，然后在补偿相应的信号传送时间之后将所有跟踪的卫星的度量组合在一起。 然后，本发明对组合的卫星度量做出帧同步决定。 在实施例中，基于每个卫星的CNO使用最佳组合算法。 根据另外的方面，本发明通过预测子帧中的多个比特来进一步加速帧同步过程，以便除了8比特前同步码之外还有更多比特是已知的。 例如，本发明认识到，子帧中的许多位很少改变或者不经常地改变。 此外，本发明使用用于预测新星历参数的旧星历。 这些参数被转换成信号中的预测位。 此外，旧星历可用于预测年历参数，历书可用于预测星历参数。
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公开(公告)号：US07924220B1
公开(公告)日：2011-04-12
申请号：US12277044
申请日：2008-11-24
申请人： Gary Lennen , Makarand Phatak , William Kerry Keal
发明人： Gary Lennen , Makarand Phatak , William Kerry Keal
摘要： The present invention is related to location positioning systems, and more particularly, to a method and apparatus of synchronizing to data frames in a positioning system signal. According to one aspect, the invention speeds up the frame synchronization process by computing a frame synchronization metric for each satellite and then combining together the metrics for all tracked satellites together, after compensating for respective signal transit times. Then the invention makes a frame sync decision on the combined satellite metric. In embodiments, an optimal combining algorithm is used based on CNO of each satellite. According to further aspects, the invention further speeds up the frame synchronization process by predicting many bits in the subframe so that more bits are known in addition to the 8-bit preamble. For example, the invention recognizes that many bits in a subframe rarely change or don't change very often. Moreover, the invention uses old ephemeris used to predict new ephemeris parameters. These parameters are translated into predicted bits in the signal. Still further, old ephemeris can be used to predict almanac parameters, and the almanac can be used to predict ephemeris parameters.
摘要翻译： 本发明涉及位置定位系统，更具体地说，涉及一种与定位系统信号中的数据帧同步的方法和装置。 根据一个方面，本发明通过计算每个卫星的帧同步度量来加速帧同步过程，然后在补偿相应的信号传送时间之后将所有跟踪的卫星的度量组合在一起。 然后，本发明对组合的卫星度量做出帧同步决定。 在实施例中，基于每个卫星的CNO使用最佳组合算法。 根据另外的方面，本发明通过预测子帧中的多个比特来进一步加速帧同步过程，以便除了8比特前同步码之外还有更多比特是已知的。 例如，本发明认识到，子帧中的许多位很少改变或者不经常地改变。 此外，本发明使用用于预测新星历参数的旧星历。 这些参数被转换成信号中的预测位。 此外，旧星历可用于预测年历参数，历书可用于预测星历参数。
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公开(公告)号：US08151170B2
公开(公告)日：2012-04-03
申请号：US12326717
申请日：2008-12-02
申请人： Gary Lennen , William Kerry Keal
发明人： Gary Lennen , William Kerry Keal
CPC分类号： G01S19/27 , G01S19/243
摘要： Systems and methods are disclosed herein for improving the sensitivity of satellite data decode in a satellite navigation receiver. The low signal ephemeris data decoding system of the present disclosure achieves a 5 db improvement in decoding sensitivity over conventional system by operating down to a CN0 of 21 dB-Hz. The improved sensitivity is achieved through a combination of reducing the number of data bits to be decoded, overcoming the inherent differential decoding problem of an all data bit polarity inversion, improving the probability of seeing single bit decoding error in an ephemeris word, running the parity correction algorithm, and reducing the undetected word error rate. The improved sensitivity makes it possible to predict the orbit of the satellite and to determine the receiver's location with higher accuracy even when operating in challenging signal conditions.
摘要翻译： 本文公开的系统和方法用于提高卫星导航接收机中卫星数据解码的灵敏度。 本公开的低信号星历数据解码系统通过下降到21dBHz的CN0，比传统系统的解码灵敏度提高了5db。 通过减少要解码的数据位的数量的组合来实现改进的灵敏度，克服了全数据位极性反转的固有差分解码问题，提高了看到星历表中单位解码错误的可能性，运行奇偶校验 校正算法，并减少未检测到的字错误率。 改进的灵敏度使得可以预测卫星的轨道，并且即使在具有挑战性的信号条件下操作时也以更高的精度确定接收机的位置。
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公开(公告)号：US20100134349A1
公开(公告)日：2010-06-03
申请号：US12326717
申请日：2008-12-02
申请人： Gary Lennen , William Kerry Keal
发明人： Gary Lennen , William Kerry Keal
IPC分类号： G01S5/14
CPC分类号： G01S19/27 , G01S19/243
摘要： Systems and methods are disclosed herein for improving the sensitivity of satellite data decode in a satellite navigation receiver. The low signal ephemeris data decoding system of the present disclosure achieves a 5 db improvement in decoding sensitivity over conventional system by operating down to a CN0 of 21 dB-Hz. The improved sensitivity is achieved through a combination of reducing the number of data bits to be decoded, overcoming the inherent differential decoding problem of an all data bit polarity inversion, improving the probability of seeing single bit decoding error in an ephemeris word, running the parity correction algorithm, and reducing the undetected word error rate. The improved sensitivity makes it possible to predict the orbit of the satellite and to determine the receiver's location with higher accuracy even when operating in challenging signal conditions.
摘要翻译： 本文公开的系统和方法用于提高卫星导航接收机中卫星数据解码的灵敏度。 本公开的低信号星历数据解码系统通过下降到21dBHz的CN0，比传统系统的解码灵敏度提高了5db。 通过减少要解码的数据位的数量的组合来实现改进的灵敏度，克服了全数据位极性反转的固有差分解码问题，提高了看到星历表中单位解码错误的可能性，运行奇偶校验 校正算法，并减少未检测到的字错误率。 改进的灵敏度使得可以预测卫星的轨道，并且即使在具有挑战性的信号条件下操作时也以更高的精度确定接收机的位置。
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公开(公告)号：US08724675B2
公开(公告)日：2014-05-13
申请号：US13366590
申请日：2012-02-06
申请人： Murray Robert Jarvis , Gary Lennen
发明人： Murray Robert Jarvis , Gary Lennen
IPC分类号： H04B1/00
CPC分类号： G01S19/21 , H04B1/7097
摘要： A method for detecting coherent interference includes the steps of: (a) receiving a signal at a first frequency, (b) forming a set of cross-correlation results by at least cross-correlating the signal with a first known code for a plurality of code offsets, (c) determining a statistical signature of the cross-correlation results, and (d) deciding, based on the statistical signature, whether non-negligible coherent interference is present within a search bin defined by the combination of the first frequency and the first known code.
摘要翻译： 一种用于检测相干干扰的方法包括以下步骤：（a）以第一频率接收信号，（b）通过至少将信号与第一已知码的互相关来形成一组互相关结果，所述第一已知码用于多个 代码偏移，（c）确定互相关结果的统计签名，以及（d）基于统计签名来确定在由第一频率和第一频率的组合定义的搜索箱内是否存在不可忽略的相干干扰 第一个已知的代码。
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公开(公告)号：US08599067B2
公开(公告)日：2013-12-03
申请号：US13190790
申请日：2011-07-26
申请人： Gary Lennen
发明人： Gary Lennen
CPC分类号： G01S19/22
摘要： A global positioning satellite (GPS) receiver that includes a radio frequency (RF) receiver receiving a first GPS signal from a GPS satellite and a processor. The processor is configured to correlate the first GPS signal with a plurality of reference signals to produce a plurality of correlations, detect a transition between receiving the first GPS signal and receiving a second GPS signal from the GPS satellite based on a phase shift in the correlations, and if the transition is detected, compensate for the phase shift when computing a range to the GPS satellite.
摘要翻译： 一种全球定位卫星（GPS）接收机，包括从GPS卫星和处理器接收第一GPS信号的射频（RF）接收机。 处理器被配置为将第一GPS信号与多个参考信号相关联以产生多个相关性，基于相关中的相移来检测接收第一GPS信号和从GPS卫星接收第二GPS信号之间的转变 ，并且如果检测到转换，则在计算到GPS卫星的范围时补偿相移。
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8.发明申请Method and Apparatus for Managing Tracking Loops For Enhanced Sensitivity Tracking of GNSS Signals 有权用于管理跟踪环的方法和装置，用于增强GNSS信号的灵敏度跟踪公开(公告)号：US20130169479A1
公开(公告)日：2013-07-04
申请号：US13341851
申请日：2011-12-30
申请人： Gary Lennen
发明人： Gary Lennen
CPC分类号： G01S19/24 , G01S19/246 , G01S19/29 , G01S19/30 , H04B1/7085 , H04B2201/70715
摘要： The present invention is related to location positioning systems, and more particularly, to a method and apparatus for making accuracy improvements to a GPS receiver's navigation calculations. According to a first aspect, the invention includes extreme sensitivity GNSS tracking loops. In embodiments, the tracking loops are self-bandwidth normalizing and the loop bandwidths automatically narrow with reduced CNO.
摘要翻译： 本发明涉及位置定位系统，更具体地，涉及一种用于对GPS接收机的导航计算进行精度改进的方法和装置。 根据第一方面，本发明包括极灵敏度的GNSS跟踪环路。 在实施例中，跟踪环路是自带带宽归一化，并且环路带宽随着减少的CNO而自动缩小。
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公开(公告)号：US07642957B2
公开(公告)日：2010-01-05
申请号：US11945269
申请日：2007-11-27
申请人： Gary Lennen , Daniel Babitch
发明人： Gary Lennen , Daniel Babitch
摘要： A GPS Mobile Unit is described. The GPS Mobile Unit may include at least two antennas, at least two GPS receivers, and a position solution module in signal communication with the at least two GPS receivers.
摘要翻译： 描述了GPS移动单元。 GPS移动单元可以包括至少两个天线，至少两个GPS接收器以及与至少两个GPS接收器进行信号通信的位置解决方案模块。
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10.发明授权Method and apparatus for managing and configuring tracker components for enhanced sensitivity tracking of GNSS signals 有权用于管理和配置跟踪器组件以增强GNSS信号的灵敏度跟踪的方法和装置公开(公告)号：US09176232B2
公开(公告)日：2015-11-03
申请号：US13341852
申请日：2011-12-30
申请人： Gary Lennen
发明人： Gary Lennen
CPC分类号： G01S19/246 , G01S19/21 , G01S19/37
摘要： The present invention is related to location positioning systems, and more particularly, to a method and apparatus for making accuracy improvements to a GPS receiver's navigation calculations. According to a first aspect, the invention provides an extreme sensitivity GNSS tracking architecture. According to other aspects, the architecture includes multiple loops per channel, with the loops implemented with hardware and/or software. According to still further aspects, the architecture includes a multi-level lock detection algorithm designed to provide a trade-off between sensitivity and speed that is not possible with existing tracking architectures.
摘要翻译： 本发明涉及位置定位系统，更具体地，涉及一种用于对GPS接收机的导航计算进行精度改进的方法和装置。 根据第一方面，本发明提供了一种极灵敏度的GNSS跟踪架构。 根据其他方面，该架构包括每个通道的多个循环，循环通过硬件和/或软件实现。 根据另外的方面，该架构包括多级锁定检测算法，其被设计为提供在现有跟踪架构中不可能的灵敏度和速度之间的权衡。
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