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1. 发明授权

US07385554B2 Satellite and local system position determination 有权
标题翻译：卫星和本地系统位置确定
公开(公告)号：US07385554B2
公开(公告)日：2008-06-10
申请号：US11515547
申请日：2006-09-05
申请人： Kurt R. Zimmerman , H. Stewart Cobb , Paul Y. Montgomery , David G. Lawrence
发明人： Kurt R. Zimmerman , H. Stewart Cobb , Paul Y. Montgomery , David G. Lawrence
IPC分类号： G01S3/02 , G01S1/00
CPC分类号： G01S19/25 , G01S1/24 , G01S19/31 , G01S19/44 , G01S19/46
摘要： In a local positioning system, augmentation of the land-based system is provided by receiving signals from a GNSS. The signals from the land-based positioning system have a code phase accuracy better than one wavelength of a carrier of the signals from the GNSS. Different decorrelation may be used for signals from a satellite than from a land-based transmitter, such as using a digital decorrelator for signals from the satellite and an analog decorrelator for signals from a land-based transmitter. The receivers may include both a GNSS antenna and a local antenna. The phase centers of the two antennas are within one wavelength of the GNSS signals from each other. The local antenna is sized for operation in the X or ISM-bands of frequencies. The GNSS antenna is a patch antenna where the microwave antenna extends away from the patch antenna in at least one dimension.
摘要翻译：在本地定位系统中，通过从GNSS接收信号来提供陆基系统的增强。来自陆上定位系统的信号的编码相位精度优于来自GNSS的信号的载波的一个波长。不同的去相关可以用于来自卫星的信号，而不是来自基于陆地的发射机，例如对于来自卫星的信号使用数字解相关器和用于来自陆基发射机的信号的模拟去相关器。接收机可以包括GNSS天线和本地天线。两个天线的相位中心在GNSS信号的一个波长内。本地天线的大小适合在X或ISM频段中运行。 GNSS天线是贴片天线，其中微波天线在至少一个维度上远离贴片天线延伸。

2. 发明授权

US07138944B2 Multiple antenna multi-frequency measurement system 有权
标题翻译：多天线多频测量系统
公开(公告)号：US07138944B2
公开(公告)日：2006-11-21
申请号：US10789868
申请日：2004-02-27
申请人： David G. Lawrence , H. Stewart Cobb
发明人： David G. Lawrence , H. Stewart Cobb
IPC分类号： H04Q7/20
CPC分类号： G01S19/29 , G01S19/32 , G01S19/37 , G01S19/44
摘要： A measurement system and an associated method for determining the positions of multiple antennas to centimeter level accuracy. The system involves minimal incremental hardware cost per additional antenna to be tracked. The primary frequency RF signals are processed by a primary frequency RF section dedicated to each antenna. The secondary frequency RF signals from all the antennas are multiplexed and input to a secondary frequency RF section corresponding to each secondary RF frequency. A correlator derives code and carrier phase for the processed primary and secondary frequency RF signals. A processor thereafter reconstructs the carrier phase for the secondary frequency RF signals. The processor finally uses these reconstructed phases to resolve carrier cycle ambiguities and to determine the position of the antennas.
摘要翻译：用于确定多个天线的位置到厘米级精度的测量系统和相关联的方法。该系统涉及每追踪天线的最小增量硬件成本。主频率RF信号由专用于每个天线的主频率RF部分处理。来自所有天线的次频RF信号被多路复用并输入到与每个次RF频率对应的次频RF部分。相关器导出处理的主频率和次频RF信号的码和载波相位。然后，处理器重建用于次频RF信号的载波相位。处理器最终使用这些重建的相位来解析载波周期模糊度并确定天线的位置。

3. 发明申请

US20110001668A1 REBROADCASTING METHOD AND SYSTEM FOR NAVIGATION SIGNALS 审中-公开
标题翻译：导航信号的重组方法和系统
公开(公告)号：US20110001668A1
公开(公告)日：2011-01-06
申请号：US11937247
申请日：2007-11-08
申请人： H. Stewart Cobb , David G. Lawrence
发明人： H. Stewart Cobb , David G. Lawrence
IPC分类号： G01S3/02
CPC分类号： G01S19/11
摘要： A “synchrolite” or rebroadcasting device allows GPS or GNSS navigation signals received at one or several locations to be processed at a separate location. The signals received by the synchrolite are added to a pilot tone and then encoded with a superimposed spread-spectrum code before being rebroadcast. The superimposed code allows signals from different synchrolites to be distinguished during the navigation process.
摘要翻译： “同步”或转播设备允许在一个或多个位置处接收的GPS或GNSS导航信号在单独的位置处理。由同步器接收的信号被加到导频音，然后在重播之前用叠加的扩频码进行编码。叠加的代码允许在导航过程中区分来自不同同步器的信号。

4. 发明授权

US06880643B1 System and method for land-leveling 有权
标题翻译：土地整治的制度和方法
公开(公告)号：US06880643B1
公开(公告)日：2005-04-19
申请号：US10359409
申请日：2003-02-06
申请人： Kurt R. Zimmerman , Avi Gross , Michael O'Connor , Glen Sapilewski , David G. Lawrence , H. Stewart Cobb , Lars Leckie , Paul Y. Montgomery
发明人： Kurt R. Zimmerman , Avi Gross , Michael O'Connor , Glen Sapilewski , David G. Lawrence , H. Stewart Cobb , Lars Leckie , Paul Y. Montgomery
IPC分类号： E02F3/84 , E02F3/76
CPC分类号： E02F3/84
摘要： A land-leveling system that uses the Global Positioning System is provided. The system provides for an earth-moving machine mounted with an antenna that receives GPS signals from the satellites of the Global Positioning System. The earth-moving machine comprises a vehicle attached to a work implement, which is also connected to an actuator. A decision unit mounted on the vehicle sends control signals to the actuator, which controls the elevation of the work implement. These control signals are generated using the signals received from the antenna and the desired grade map. This system has an increased coverage area, more accuracy and round-the-clock operability. The system could be used to carry out all the land-leveling operations viz. surveying, leveling and verifying.
摘要翻译：提供了使用全球定位系统的地面平整系统。该系统提供一种安装有天线的移动机器，该天线从全球定位系统的卫星接收GPS信号。移土机包括附接到工作工具的车辆，该工具还连接到致动器。安装在车辆上的决定单元向执行器发送控制信号，该控制信号控制作业工具的高度。这些控制信号使用从天线接收的信号和期望的等级图来产生。该系统具有增加的覆盖面积，更高的准确度和全天候的可操作性。该系统可用于执行所有的土地平整操作。测量，调平和验证。

5. 发明授权

US07271766B2 Satellite and local system position determination 有权
标题翻译：卫星和本地系统位置确定
公开(公告)号：US07271766B2
公开(公告)日：2007-09-18
申请号：US10909184
申请日：2004-07-30
申请人： Kurt R. Zimmerman , H. Stewart Cobb , Paul Y. Montgomery , David G. Lawrence
发明人： Kurt R. Zimmerman , H. Stewart Cobb , Paul Y. Montgomery , David G. Lawrence
IPC分类号： G01S3/02 , G01S1/00
CPC分类号： G01S19/25 , G01S1/24 , G01S19/31 , G01S19/44 , G01S19/46
摘要： In a local positioning system, augmentation of the land-based system is provided by receiving signals from a GNSS. The signals from the land-based positioning system have a code phase accuracy better than one wavelength of a carrier of the signals from the GNSS. Different decorrelation may be used for signals from a satellite than from a land-based transmitter, such as using a digital decorrelator for signals from the satellite and an analog decorrelator for signals from a land-based transmitter. The receivers may include both a GNSS antenna and a local antenna. The phase centers of the two antennas are within one wavelength of the GNSS signals from each other. The local antenna is sized for operation in the X or ISM-bands of frequencies. The GNSS antenna is a patch antenna where the microwave antenna extends away from the patch antenna in at least one dimension.
摘要翻译：在本地定位系统中，通过从GNSS接收信号来提供陆基系统的增强。来自陆上定位系统的信号的编码相位精度优于来自GNSS的信号的载波的一个波长。不同的去相关可以用于来自卫星的信号，而不是来自基于陆地的发射机，例如对于来自卫星的信号使用数字解相关器和用于来自陆地发射机的信号的模拟去相关器。接收机可以包括GNSS天线和本地天线。两个天线的相位中心在GNSS信号的一个波长内。本地天线的大小适合在X或ISM频段中运行。 GNSS天线是贴片天线，其中微波天线在至少一个维度上远离贴片天线延伸。

6. 发明授权

US07333053B2 Signal path system and method for a ranging signal receiver 有权
标题翻译：用于测距信号接收机的信号路径系统和方法
公开(公告)号：US07333053B2
公开(公告)日：2008-02-19
申请号：US10836363
申请日：2004-04-29
申请人： David G. Lawrence , H. Stewart Cobb
发明人： David G. Lawrence , H. Stewart Cobb
IPC分类号： G01S5/14
CPC分类号： G01S19/32
摘要： Methods and receivers determine a range from radio frequency ranging signals at multiple frequencies. The number of dedicated RF sections and correlation processing power is reduced by multiplexing signals from a sub-set of frequencies onto a common path. The common path provides shared processing, such as down-conversion shared by signals at two different frequencies. The correlation processing power for a three frequency receiver may be the same or similar as for a two frequency receiver since signals for two frequencies share processing as a function of time. Correlation is performed intermittently for signals at two of the frequencies.
摘要翻译：方法和接收机确定多个频率的射频测距信号的范围。通过将来自频率子集的信号复用到公共路径上来减少专用RF部分的数量和相关处理能力。公共路径提供共享处理，例如由两个不同频率的信号共享的下变频。三频接收机的相关处理能力可以与二频接收机相同或相似，因为两个频率的信号作为时间的函数共享处理。对于两个频率的信号间歇地进行相关。

7. 发明授权

US07310064B2 Rebroadcasting method and system for navigation signals 有权
标题翻译：导航信号重播方法及系统
公开(公告)号：US07310064B2
公开(公告)日：2007-12-18
申请号：US10837515
申请日：2004-04-29
申请人： H. Stewart Cobb , David G. Lawrence
发明人： H. Stewart Cobb , David G. Lawrence
IPC分类号： G01S1/08 , G01S5/14
CPC分类号： G01S19/11
摘要： A “synchrolite” or rebroadcasting device allows GPS or GNSS navigation signals received at one or several locations to be processed at a separate location. The signals received by the synchrolite are added to a pilot tone and then encoded with a superimposed spread-spectrum code before being rebroadcast. The superimposed code allows signals from different synchrolites to be distinguished during the navigation process.
摘要翻译： “同步”或转播设备允许在一个或多个位置处接收的GPS或GNSS导航信号在单独的位置处理。由同步器接收的信号被加到导频音，然后在重播之前用叠加的扩频码进行编码。叠加的代码允许在导航过程中区分来自不同同步器的信号。

8. 发明授权

US06784830B1 Method for processing in dual frequency civilian GPS receiver 有权
标题翻译：双频民用GPS接收机处理方法
公开(公告)号：US06784830B1
公开(公告)日：2004-08-31
申请号：US10413354
申请日：2003-04-14
申请人： David G. Lawrence , H. Stewart Cobb , Paul Y. Montgomery
发明人： David G. Lawrence , H. Stewart Cobb , Paul Y. Montgomery
IPC分类号： G01S514
CPC分类号： G01S19/32 , G01S19/30 , G01S19/37
摘要： A method and a system for L1/L2 phase and magnitude determination in satellite navigation equipment is disclosed herein. The method generates separate W code estimates for the L1 signal and the L2 signal, the estimates being uncorrelated with the error in the inphase and the quadrature components of the corresponding signals. The W code is estimated using both the L1 signal as well as the L2 signal. The L1 and L2 baseband signals are obtained from the corresponding RF signals. The baseband signals are added and then filtered using a non-causal FIR LPF. This filter has the property that the output at a time instant is uncorrelated with the input at that time instant. In the preferred embodiment, a one-W-code-bit I&D filter is used instead of a FIR LPF. In an alternate embodiment, a single W code estimate is obtained for both the L1 and the L2 signal.
摘要翻译：本文公开了一种用于卫星导航设备中的L1 / L2相位和幅度确定的方法和系统。该方法为L1信号和L2信号生成单独的W码估计，估计与相位中的误差和相应信号的正交分量不相关。使用L1信号以及L2信号来估计W码。从对应的RF信号获得L1和L2基带信号。添加基带信号，然后使用非因果FIR LPF进行滤波。该过滤器具有这样的属性，即当时的输出与该时刻的输入不相关。在优选实施例中，使用单W位位I＆D滤波器来代替FIR LPF。在替代实施例中，对L1和L2信号都获得单个W码估计。

9. 发明授权

US07653399B2 Wide area differential satellite positioning with local area updates 有权
标题翻译：广域差分卫星定位与局部更新
公开(公告)号：US07653399B2
公开(公告)日：2010-01-26
申请号：US11315657
申请日：2005-12-22
申请人： David G. Lawrence
发明人： David G. Lawrence
IPC分类号： G06F15/16
CPC分类号： G01S19/07 , G01S19/41
摘要： Wide area corrections are used substantially continuously. Local area corrections are used once or sparsely. For example, an initial position is determined with local area corrections. Wide area corrections are subsequently used. The initial position information is used in the wide area position determination to limit or avoid delay for convergence. Other sparse uses of local area corrections include verifying or updating positions based on substantially continuous use of wide area corrections.
摘要翻译：广域校正基本连续使用。本地区域修正使用一次或稀疏。例如，使用局部区域校正来确定初始位置。随后使用广域校正。在广域位置确定中使用初始位置信息来限制或避免收敛延迟。局部区域校正的其他稀疏用途包括基于广泛区域校正的基本连续使用来验证或更新位置。

10. 发明授权

US07586438B1 Navigation with satellite communications 有权
标题翻译：卫星通信导航
公开(公告)号：US07586438B1
公开(公告)日：2009-09-08
申请号：US11108195
申请日：2005-04-18
申请人： David G. Lawrence , Michael L. O'Connor
发明人： David G. Lawrence , Michael L. O'Connor
IPC分类号： G01S1/00 , G06F19/00 , G06G7/70 , G06G7/76 , G01C21/00
CPC分类号： G01S5/009 , G01S19/07
摘要： A Low Earth Orbiting (LEO) satellite is used for broadcasting differential navigation corrections. Using LEO satellites, the “footprint” of the beam is much smaller than for geosynchronous satellites. Datalink bandwidth requirements are reduced to sufficiently cover an entire footprint area. With a LEO satellite transmitting in multiple beams, these footprints become even smaller. Corrections targeted to such a small area provide local area corrections broadcast from the LEO satellites. Payment, discounts, subsidies or charges are arranged to encourage different entities to own or host base stations, resulting in wide distribution of the network of base stations for use with satellite communications.
摘要翻译：低地球轨道（LEO）卫星用于广播差分导航校正。使用LEO卫星，射束的“足迹”比地球同步卫星小得多。减少数据链路带宽需求，以充分覆盖整个占用面积。利用LEO卫星在多个波束中发射，这些足迹变得更小。针对这样一个小区域的修正提供了从低地球轨道卫星广播的局部区域修正。安排支付，折扣，补贴或费用来鼓励不同的实体拥有或主办基站，导致卫星通信使用的基站网络的广泛分发。

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