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1. 发明申请

US20140125520A1 ANTI-JAMMING SUBSYSTEM EMPLOYING AN ANTENNA WITH A HORIZONTAL RECEPTION PATTERN 审中-公开
标题翻译：使用水平接收图案使用天线的防弹性子系统
公开(公告)号：US20140125520A1
公开(公告)日：2014-05-08
申请号：US13530302
申请日：2012-06-22
申请人： Patrick C. Fenton
发明人： Patrick C. Fenton
IPC分类号： G01S19/21
CPC分类号： G01S19/215 , G01S19/21 , G01S19/36 , H01Q3/2629 , H04B7/0825 , H04K3/228 , H04K3/90 , H04K2203/32
摘要： An anti-jamming subsystem for a jamming signal originating along the horizon includes an anti-jamming antenna with a horizontal reception pattern constrained to receive signals originating along the horizon. The subsystem receives the signals from the anti-jamming antenna and a reference antenna, which has a half hemispherical reception pattern looking skyward. The subsystem utilizes associated phase information to phase shift the signals received by the anti jamming antenna and produce an anti-jamming signal, and combines the anti jamming signal with the signals received by the reference antenna to produce signals in which the interference from the jamming signal originating along the horizon is actively cancelled and the phase and timing information of signals received by the reference antenna from at least higher elevation satellites is preserved. The horizontal reception pattern of the anti-jamming antenna may be circular or directional toward a known jammer positioned along the horizon.
摘要翻译：用于沿着水平线发起的干扰信号的抗干扰子系统包括具有受限于接收沿水平线发出的信号的水平接收模式的抗干扰天线。该子系统接收来自抗干扰天线的信号和一个参考天线，该天线具有仰望的半个半球接收模式。该子系统利用相关的相位信息来相移由抗干扰天线接收到的信号，并产生抗干扰信号，并将抗干扰信号与参考天线接收到的信号相结合，产生干扰来自干扰信号积极地取消沿水平线发出的信号，并且保持由至少较高的高程卫星接收的参考天线的信号的相位和定时信息。抗干扰天线的水平接收图案可以是沿着水平线定位的已知干扰信号的圆形或方向。

2. 发明授权

US08633854B2 Short and ultra-short baseline phase maps 有权
标题翻译：短和超短基线相位图
公开(公告)号：US08633854B2
公开(公告)日：2014-01-21
申请号：US12579481
申请日：2009-10-15
申请人： Patrick C. Fenton
发明人： Patrick C. Fenton
IPC分类号： G01S19/54
CPC分类号： G01S19/54 , G01S19/22 , G01S19/23
摘要： A system for generating and utilizing a look-up mechanism consisting of one or more phase difference error maps, tables and/or mathematical models calculates the respective maps, tables and/or models by placing a short baseline or ultra-short baseline antenna array in a known location and known orientation, determining angles of incidence of incoming GNSS satellite signals with respect the antenna array and calculating expected carrier phase differences between respective pairs of antennas, calculating measured carrier phase differences between the respective pairs of antennas, and determining carrier phase difference errors using the expected and measured carrier phase differences. The carrier phase difference errors are then recorded in the look-up mechanism, with the maps and, as appropriate, look-up tables for the respective pairs of antennas being indexed by angles of incidence. Thereafter, the system utilizes the look-up mechanism when determining the unknown orientation of the antenna structure. For respective pairs of antennas, the system enters the look-up mechanism based on angles of incidence determined from a calculated orientation, and uses the retrieved values in the calculation of a corrected orientation, to compensate for phase distortion.
摘要翻译：用于产生和利用由一个或多个相位差误差图，表和/或数学模型组成的查找机制的系统通过将短基线或超短基线天线阵列放置在...中来计算相应的地图，表和/或模型已知位置和已知定向，确定输入的GNSS卫星信号相对于天线阵列的入射角，并计算各对天线之间的预期载波相位差，计算各对天线之间的测量载波相位差，以及确定载波相位差使用预期和测量的载波相位差的误差。然后将载波相位差误差记录在查找机制中，其中映射以及适当地，通过入射角度对各对天线进行索引的查找表。此后，当确定天线结构的未知方向时，系统利用查找机制。对于各对天线，系统根据从计算出的方向确定的入射角进入查找机构，并且在校正方位的计算中使用检索值来补偿相位失真。

3. 发明申请

US20130328711A1 ANTI-JAMMING SUBSYSTEM EMPLOYING AN ANTENNA ARRAY WITH A HORIZONTAL CIRCULAR RECEPTION PATTERN 有权
标题翻译：使用水平圆形接收图案使用天线阵列的防伪子系统
公开(公告)号：US20130328711A1
公开(公告)日：2013-12-12
申请号：US13489801
申请日：2012-06-06
申请人： Patrick C. Fenton
发明人： Patrick C. Fenton
IPC分类号： G01S7/36
CPC分类号： G01S19/21 , H01Q17/008 , H04K3/228 , H04K3/90 , H04K2203/32
摘要： An anti-jamming subsystem for jamming signals originating along the horizon includes a two-dimensional horizontal array of antennas that effectively has a horizontal circular reception pattern for receiving signals originating along the horizon and a antenna that has a half hemispherical reception pattern and an upward looking view of the sky. The subsystem utilizes associated phase information to actively combine the signals received by the respective antennas in the array, to produce one or more anti jamming signals with narrow beams in the directions of the jammers. The subsystem combines the anti jamming signals with the signals received by the reference antenna, to produce signals for further processing in which the interference from the jamming signals originating along the horizon is minimized without adversely affecting the signals received by the reference antenna from at least higher elevation satellites.
摘要翻译：用于干扰沿水平线发出的信号的抗干扰子系统包括有效地具有用于接收沿水平线发出的信号的水平圆形接收模式的二维水平阵列天线和具有半半球接收模式和向上看的天线视图的天空。子系统利用相关联的相位信息来主动地组合由阵列中的各个天线接收的信号，以产生一个或多个抗干扰信号，其中干扰信号的方向为窄波束。该子系统将抗干扰信号与由参考天线接收的信号相结合，以产生用于进一步处理的信号，其中来自沿着水平线的干扰信号的干扰最小化，而不会不利地影响由至少更高的参考天线接收的信号高程卫星。

4. 发明授权

US08558738B2 GNSS receiver using signals of opportunity and assistance information to reduce the time to first fix 有权
标题翻译： GNSS接收机使用机会信号和辅助信息来减少首次修复的时间
公开(公告)号：US08558738B2
公开(公告)日：2013-10-15
申请号：US12471046
申请日：2009-05-22
申请人： Jonathan Ladd , Patrick C. Fenton
发明人： Jonathan Ladd , Patrick C. Fenton
IPC分类号： G01S19/23 , G01S19/24 , G01S19/26 , G01S19/31
CPC分类号： G01S19/26 , G01S19/235 , G01S19/27
摘要： A GNSS receiver reduces the time to first fix by utilizing the properties of existing radiated signals of opportunity, such as AM or FM radio signals, television signals and so forth, to reduce the uncertainties associated with oscillator frequency and phase, and further utilizing an Almanac and battery backed-up date and time to determine the satellites in view and reduce the uncertainties associated with Doppler. The receiver may use multiple signals of opportunity to determine the city or local area in which the receiver is located based on the set of frequencies of the signals, and also to reduce search uncertainties for oscillator frequency by estimating an offset based on the differences between the frequencies of the respective signals of opportunity at the receiver and the nominal broadcast frequencies of the signals.
摘要翻译： GNSS接收器通过利用诸如AM或FM无线电信号，电视信号等的现有辐射信号的特性来减少首次固定的时间，以减少与振荡器频率和相位相关的不确定性，并且进一步利用年鉴和电池备份的日期和时间来确定卫星的视野，并减少与多普勒相关的不确定性。接收机可以使用多个机会信号来基于信号的频率集来确定接收机所在的城市或局域，并且还可以通过基于信号的差异来估计偏移来减少振荡器频率的搜索不确定性在接收机处的各个机会信号的频率和信号的标称广播频率。

5. 发明授权

US08442097B2 Apparatus for and method of making pulse-shape measurements 有权
标题翻译：脉冲形状测量的装置和方法
公开(公告)号：US08442097B2
公开(公告)日：2013-05-14
申请号：US12769260
申请日：2010-04-28
申请人： Patrick C. Fenton , Ian Williamson , David Brown
发明人： Patrick C. Fenton , Ian Williamson , David Brown
IPC分类号： H04B1/00
CPC分类号： H04B1/7085 , G01S19/21 , G01S19/22 , G01S19/30 , H04B1/7075 , H04B2201/70715
摘要： A receiver includes a pre-correlation filter that forms an image of the average chip shape of a received signal over a specified period of time. The filter includes an array of complex accumulation registers that accumulate measurements that are associated with signal samples from specific ranges of locations, or code chip phase angles, along a spread-spectrum chip. Using the accumulated measurements, the receiver estimates the location of the chip transitions in a direct path signal component. The receiver may thereafter change the starting points, sizes and numbers of ranges, such that the accumulation registers accumulate more detail from the chip edges. The receiver in addition may use the accumulated measurements from selected registers and/or selected groups of registers, to produce the correlation values that are needed to perform one or more correlation techniques and/or one or more multipath mitigation techniques. As appropriate, the sizes and/or starting points of the bins, and/or the selections of the bins for the various groupings may be altered, to change the spacings, locations, and so forth to which correlation values correspond.
摘要翻译：接收机包括预定相关滤波器，其在指定时间段内形成接收信号的平均码片形状的图像。该滤波器包括一组复数累积寄存器，其累积与沿着扩频芯片的特定位置范围或码片相位角的信号样本相关联的测量。使用累积测量，接收机估计直接路径信号分量中芯片转换的位置。接收器此后可以改变起始点，大小和范围的数量，使得累加寄存器从码片边缘积累更多的细节。接收机另外可以使用来自所选择的寄存器和/或所选择的寄存器组的累积测量值来产生执行一个或多个相关技术和/或一个或多个多径抑制技术所需的相关值。适当地，可以改变箱的尺寸和/或起点，和/或用于各种组的箱的选择，以改变相关值对应的间隔，位置等。

6. 发明授权

US08159397B2 System for determining position using two way time transfer signals 有权
标题翻译：使用双向时间传递信号确定位置的系统
公开(公告)号：US08159397B2
公开(公告)日：2012-04-17
申请号：US12640493
申请日：2009-12-17
申请人： Walter J. Feller , Patrick C. Fenton
发明人： Walter J. Feller , Patrick C. Fenton
IPC分类号： G01S3/02
CPC分类号： G01S19/05 , G01S5/0063 , G01S19/10 , G01S19/23 , G01S19/25 , G01S19/256 , G01S19/46
摘要： A system for enhancing location estimates by movable rovers including one or more base stations that engage in two way time transfer (TWTT) with the rovers. Each TWTT operation between a given base station and a given rover provides range measurements and clock differences between the base station and rover. The range measurements are based on the travel time of return TWTT signals and the clock differences are based on a phase offset of a code in the return TWTT signal and/or timing information included in the return TWTT signals.
摘要翻译：一种用于通过可移动的漫游器增强位置估计的系统，包括一个或多个与漫游者进行双向时间传送（TWTT）的基站。给定基站和给定流动站之间的每个TWTT操作提供基站和流动站之间的范围测量和时钟差异。范围测量基于返回TWTT信号的行进时间，并且时钟差基于返回TWTT信号中的码的相位偏移和/或包括在返回TWTT信号中的定时信息。

7. 发明申请

US20110090113A1 SHORT AND ULTRA-SHORT BASELINE PHASE MAPS 有权
标题翻译：短期和超短期基线相位
公开(公告)号：US20110090113A1
公开(公告)日：2011-04-21
申请号：US12579481
申请日：2009-10-15
申请人： Patrick C. Fenton
发明人： Patrick C. Fenton
IPC分类号： G01S19/53 , G01S19/29
CPC分类号： G01S19/54 , G01S19/22 , G01S19/23
摘要： A system for generating and utilizing a look-up mechanism consisting of one or more phase difference error maps, tables and/or mathematical models calculates the respective maps, tables and/or models by placing a short baseline or ultra-short baseline antenna array in a known location and known orientation, determining angles of incidence of incoming GNSS satellite signals with respect the antenna array and calculating expected carrier phase differences between respective pairs of antennas, calculating measured carrier phase differences between the respective pairs of antennas, and determining carrier phase difference errors using the expected and measured carrier phase differences. The carrier phase difference errors are then recorded in the look-up mechanism, with the maps and, as appropriate, look-up tables for the respective pairs of antennas being indexed by angles of incidence. Thereafter, the system utilizes the look-up mechanism when determining the unknown orientation of the antenna structure. For respective pairs of antennas, the system enters the look-up mechanism based on angles of incidence determined from a calculated orientation, and uses the retrieved values in the calculation of a corrected orientation, to compensate for phase distortion.
摘要翻译：用于产生和利用由一个或多个相位差误差图，表和/或数学模型组成的查找机制的系统通过将短基线或超短基线天线阵列放置在...中来计算相应的地图，表和/或模型已知位置和已知定向，确定输入的GNSS卫星信号相对于天线阵列的入射角，并计算各对天线之间的预期载波相位差，计算各对天线之间的测量载波相位差，以及确定载波相位差使用预期和测量的载波相位差的误差。然后将载波相位差误差记录在查找机制中，其中映射以及适当地，通过入射角度对各对天线进行索引的查找表。此后，当确定天线结构的未知方向时，系统利用查找机制。对于各对天线，系统根据从计算出的方向确定的入射角进入查找机构，并且在校正方位的计算中使用检索值来补偿相位失真。

8. 发明申请

US20100103030A1 SEISMIC MEASUREMENT SYSTEM INCLUDING GPS RECEIVERS 有权
标题翻译：包括GPS接收机在内的地震测量系统
公开(公告)号：US20100103030A1
公开(公告)日：2010-04-29
申请号：US12652112
申请日：2010-01-05
申请人： Patrick C. Fenton
发明人： Patrick C. Fenton
IPC分类号： G01S19/24
CPC分类号： G01V3/28 , G01S19/05 , G01S19/44 , G01V1/003 , G01V1/16 , G01V1/22 , G01V1/26
摘要： A system for determining positions of fixed-position satellite signal receivers that have restricted views of the sky includes a data recording control center, and one or more base satellite signal receivers with associated antennas that together have substantially unrestricted views of the sky. The system batch processes range information provided by the fixed-position receivers over an extended period of time, determining the three dimensional position of a given fixed-position receiver using range data from at least three relatively short time intervals associated with different sky positions in which the receiver is tracking any two or more satellite signals simultaneously.
摘要翻译：用于确定具有限制的天空视图的固定位置卫星信号接收机的位置的系统包括数据记录控制中心和一个或多个具有相关天线的基本卫星信号接收机，这些天线共同具有基本上无限制的天空视图。系统批量处理由固定位置接收器在延长的时间段内提供的范围信息，使用与不同天空位置相关联的至少三个相对短的时间间隔的范围数据来确定给定固定位置接收机的三维位置，其中，接收机同时跟踪任何两个或更多个卫星信号。

9. 发明授权

US06728637B2 Track model constraint for GPS position 有权
标题翻译： GPS位置跟踪模型约束
公开(公告)号：US06728637B2
公开(公告)日：2004-04-27
申请号：US09888195
申请日：2001-06-22
申请人： Thomas J. Ford , Patrick C. Fenton , James O. McGuffin , Stanley K. Honey
发明人： Thomas J. Ford , Patrick C. Fenton , James O. McGuffin , Stanley K. Honey
IPC分类号： G06C2126
CPC分类号： G01S19/50 , G01C21/28 , G01S5/0027 , G01S5/0036 , G01S5/0054 , G01S19/04
摘要： A track model is created for use with a GPS receiver. In one embodiment, the track model is a set of planar surfaces which approximate the contiguous surface on which navigation takes place. The GPS receiver searches for an appropriate planar surface associated with its approximate position. Having found the appropriate planar surface, the GPS receiver constrains its position using the planar surface associated with its approximate position. Using the track model improves the accuracy of the computed position at the time and improves the ambiguity estimation process so that positions with greatly improved accuracy are available sooner.
摘要翻译：创建轨道模型以与GPS接收器一起使用。在一个实施例中，轨道模型是近似在其上进行导航的邻接表面的一组平面表面。 GPS接收机搜索与其近似位置相关联的适当平面。找到适当的平面后，GPS接收机使用与其近似位置相关联的平面来限制其位置。使用轨迹模型提高了计算时间位置的精度，并改善了模糊度估计过程，从而可以更快地获得具有极大提高精度的位置。

10. 发明授权

US08400352B2 Centimeter positioning using low cost single frequency GNSS receivers 有权
标题翻译：使用低成本单频GNSS接收机的厘米定位
公开(公告)号：US08400352B2
公开(公告)日：2013-03-19
申请号：US12917625
申请日：2010-11-02
申请人： Patrick C. Fenton
发明人： Patrick C. Fenton
IPC分类号： G01S19/44 , G01S19/43
CPC分类号： G01S19/44
摘要： A global positioning system includes a base GNSS receiver that determines position and carrier phase measurements for GNSS satellites in view and a rover GNSS receiver, which is a single frequency receiver that captures GNSS satellite signals transmitted in the single frequency band during a capture window from a plurality of GNSS satellites, the plurality being large enough to provide a carrier phase data set from which a solution to associated integer carrier phase ambiguities is over determined. The system determining from the captured signals, a search space associated with the satellites in view, the code phase delays and associated position uncertainty. The system resolving the integer carrier cycle ambiguities using double difference carrier phase measurements associated with signal power values that are over a predetermined threshold value. The system resolving the carrier cycle ambiguities over the capture window to a single solution set and determining the position of the rover GNSS receiver to an accuracy within centimeters using the resolved carrier phase measurements.
摘要翻译：一个全球定位系统包括一个基本的GNSS接收机，用于确定视野中的GNSS卫星的位置和载波相位测量，以及一个漫游器GNSS接收机，它是一个单频接收机，捕获在一个捕获窗口中从单个频带发射的GNSS卫星信号多个GNSS卫星，所述多个足够大以提供载波相位数据集，从其中相关联的整数载波相位模糊度的解决过程被确定。该系统根据所捕获的信号确定与视频中的卫星相关联的搜索空间，码相位延迟和相关的位置不确定性。该系统使用与超过预定阈值的信号功率值相关联的双差分载波相位测量来解决整数载波周期模糊度。系统将捕获窗口上的载波周期模糊度解析为单个解决方案集，并使用解析的载波相位测量将漫游器GNSS接收机的位置确定为厘米以内的精度。

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