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    • 91. 发明授权
    • Long baseline RTK using a secondary base receiver a non-continuous data link and a wireless internet connectivity
    • 长基线RTK使用辅助基站接收器非连续数据链路和无线互联网连接
    • US06507738B1
    • 2003-01-14
    • US09477045
    • 1999-12-31
    • Michael Timo AllisonAnn Ciganer
    • Michael Timo AllisonAnn Ciganer
    • H04Q720
    • G01S19/43G01S19/04
    • The system and method for long baseline RTK survey are disclosed. The system includes a primary base station (PBS), a secondary base station (SBS), a primary data link between the PBS and the SBS, and a secondary data link between the SBS and a rover. The PBS, the SBS, and the rover are equipped with satellite antennas for satellite navigational purposes, and with the wireless Internet data accesses devices (WIDAD). The long baseline vector between the PBS and the rover is established by combining the primary baseline vector between the SBS and the PBS and the secondary baseline vector between the SBS and the rover. The PBS is placed in a position with a known location. The PBS wirelessly downloads its logged set of data into the Internet server using the (PBS-WIDAD). The SBS determines its precise position coordinates by accessing wirelessly the PBS logged data on the Internet server using the (SBS-WIDAD). The rover determine its position coordinates in real time by accessing SBS directly using the (Rover-WIDAD), or determines its coordinates using the batch delayed delivery method by wirelessly accessing the SBS position coordinates published on the Internet server.
    • 披露了长基线RTK调查的系统和方法。 该系统包括主基站(PBS),辅助基站(SBS),PBS与SBS之间的主数据链路,以及SBS与流动站之间的辅助数据链路。 PBS,SBS和流动站配备有用于卫星导航目的的卫星天线,以及无线因特网数据访问设备(WIDAD)。 通过组合SBS和PBS之间的主要基线矢量和SBS和流动站之间的次要基线矢量来建立PBS和流动站之间的长基线矢量。 将PBS放置在具有已知位置的位置。 PBS使用(PBS-WIDAD)无线地将其记录的数据集下载到Internet服务器中。 SBS通过使用(SBS-WIDAD)无线访问Internet服务器上的PBS记录数据来确定其精确的位置坐标。 流动站通过使用(Rover-WIDAD)直接访问SBS来实时确定其位置坐标,或者通过无线访问Internet服务器上发布的SBS位置坐标,使用批量延迟传送方法来确定其坐标。
    • 92. 发明授权
    • Method and apparatus for navigation guidance
    • 导航指导方法和装置
    • US06480148B1
    • 2002-11-12
    • US09653740
    • 2000-09-01
    • Raymond P WilsonHarold L. Longaker
    • Raymond P WilsonHarold L. Longaker
    • H04B7185
    • G01S19/44A61B5/1112G01C15/00G01S19/13G01S19/41G01S19/43
    • A position identification system, that employs satellite navigational or similar positioning technology is provided. In one embodiment, the position identification system includes a receiver for receiving position signals from a positioning system; an orientation device that is configured to rotate about at least one axis; a pointing element coupled to the orientation device to provide indication of a direction to a desired position; and a processor that is coupled to the receiver to receive the position signals. The processor computes a current position of the position identification system based upon the position signals. The processor directs the orientation device, based upon the current position and the desired position, with the pointing device tracking the direction to the desired position as the current position changes. Using the positioning system, a pointing device is used to identify the direction to the desired location to the user of the positioning system. The positioning system receives a first position corresponding to the desired location. A second position is determined corresponding to the device's current location. Then the pointing element is oriented such that the pointing element is substantially aligned with the first position indicating the direction to the desired. The position signals are updated so that, if the device's current position changes, the pointing device will track the direction to the desired position.
    • 提供了采用卫星导航或类似定位技术的位置识别系统。 在一个实施例中,位置识别系统包括用于从定位系统接收位置信号的接收器; 被配置为围绕至少一个轴线旋转的取向装置; 指向元件,其耦合到所述定向装置,以向所需位置提供方向的指示; 以及耦合到接收器以接收位置信号的处理器。 处理器基于位置信号计算位置识别系统的当前位置。 处理器基于当前位置和期望位置来引导定向装置,当目标位置改变时,指示装置将方向跟踪到所需位置。 使用定位系统,使用定点设备来识别到定位系统的用户到期望位置的方向。 定位系统接收对应于期望位置的第一位置。 根据设备的当前位置确定第二个位置。 然后指向元件被定向成使得指向元件基本上与指示所期望的方向的第一位置对准。 更新位置信号,使得如果设备的当前位置改变,指示设备将跟踪到期望位置的方向。
    • 93. 发明授权
    • Automated differential correction processing of field data in a global positioning system
    • 全球定位系统中现场数据的自动差分校正处理
    • US06392589B1
    • 2002-05-21
    • US09608455
    • 2000-06-29
    • John F. RogersPeter Glen France
    • John F. RogersPeter Glen France
    • H04B7185
    • G01S19/41G01S19/43
    • A system and method for automated differential correction processing of field data in a global positioning system (GPS). In one embodiment, the present invention retrieves GPS field data collected by one or more GPS receivers from a storage device, and then automatically selects the most appropriate differential correction scheme to generate a solution without user intervention. More specifically, the present invention executes a code-based correction scheme to generate a code-based solution for the field data. Next, the present invention examines the field data to determine whether a carrier phase correction is applicable. If the field data supports carrier phase correction, the present invention generates a carrier phase solution, compares it with the code-based solution, and returns the more accurate of the two solutions as the final result. If the field data does not support a carrier phase correction, the present invention returns the code-based solution as the final result. Thus, the present invention provides a system and method for post-processing of GPS field data which does not require a user to know and understand the contents of the field data, to deal with multiple user interfaces, or to read and interpret different results generated by various processing schemes. In other words, the present invention provides a single software package for post-processing of GPS field data without extensive user involvement. As such, the present invention greatly reduces the complexity of GPS field data post-processing and enhances the usability of GPS equipment.
    • 一种用于全球定位系统(GPS)中现场数据的自动差分校正处理的系统和方法。 在一个实施例中,本发明从存储设备中检索由一个或多个GPS接收器收集的GPS场数据,然后自动选择最合适的差分校正方案以产生无需用户干预的解决方案。 更具体地,本发明执行基于代码的校正方案以产生用于场数据的基于代码的解决方案。 接下来,本发明检查现场数据以确定载波相位校正是否适用。 如果现场数据支持载波相位校正,则本发明生成载波相位解决方案,将其与基于代码的解决方案进行比较,并且作为最终结果返回两种解决方案的准确性。 如果现场数据不支持载波相位校正,则本发明作为最终结果返回基于代码的解决方案。 因此,本发明提供了一种用于后处理GPS场数据的系统和方法,其不需要用户知道和理解现场数据的内容,处理多个用户界面,或者读取和解释产生的不同结果 通过各种处理方案。 换句话说,本发明提供了用于后期处理GPS场数据的单一软件包,而无需广泛的用户参与。 因此,本发明大大降低了GPS场数据后处理的复杂度,提高了GPS设备的可用性。
    • 94. 发明授权
    • Enhanced differential GNSS carrier-smoothed code processing using dual frequency measurements
    • 使用双频测量的增强的差分GNSS载波平滑码处理
    • US06198430B1
    • 2001-03-06
    • US09277341
    • 1999-03-26
    • Patrick A. HwangGary A. McGrawJohn R. Bader
    • Patrick A. HwangGary A. McGrawJohn R. Bader
    • H04B7185
    • G01S5/009G01S19/32G01S19/43
    • A method of generating a differentially corrected pseudorange residual in a differential global positioning system includes tracking at a base station first and second GPS signals, having first and second frequencies, from a first satellite. At the base station, a first pseudorange measurement is determined from the tracked first GPS signal. At the base station, a first smoothed pseudorange measurement is calculated from the determined first pseudorange measurement as a function of both the first and second GPS signals. The first smoothed pseudorange measurement is provided to a remote GPS receiver. The remote GPS receiver calculates the differentially corrected pseudorange residual as a function of the first smoothed pseudorange measurement provided by the base station.
    • 一种在差分全球定位系统中产生差分校正的伪距残差的方法包括在基站处跟踪来自第一卫星的具有第一和第二频率的第一和第二GPS信号。 在基站,根据跟踪的第一GPS信号确定第一伪距测量。 在基站处,根据所确定的第一伪距测量值作为第一和第二GPS信号两者的函数来计算第一平滑伪距测量。 第一个平滑的伪距测量被提供给远程GPS接收器。 远程GPS接收机根据基站提供的第一平滑伪距测量来计算差分校正伪距残差。
    • 95. 发明授权
    • Method and apparatus for detecting cycle slips in navigation signals received at a receiver from a satellite-based navigation system
    • 用于检测在基于卫星的导航系统的接收机处接收的导航信号中的循环滑移的方法和装置
    • US06175806B1
    • 2001-01-16
    • US08092684
    • 1993-07-16
    • Perry John Thuente
    • Perry John Thuente
    • G01S502
    • G01S19/43G01S19/49
    • Carrier signal cycle slip errors occurring at a receiver in a satellite-based navigation system, such as NAVSTAR GPS, are detected. A continuous navigation signal is received from a satellite. Cycles of the carrier wave of the navigation signal are counted over a time &Dgr;t. The cycle count and the time &Dgr;t are used to compute a first velocity of the receiver along a vector between the receiver and the satellite. A second velocity of the receiver is received from an inertial reference unit associated with the receiver. A component of the second velocity along the vector to the satellite is computed. A difference between the first and second velocities is then computed and compared to predetermined value. If the difference exceeds the predetermined value, then a cycle slip error is indicated.
    • 检测在卫星导航系统(如NAVSTAR GPS)中的接收机处发生的载波信号周期滑移误差。 从卫星接收连续的导航信号。 导航信号载波的周期在一段时间内被计数DELTAt。 循环计数和时间DELTAt用于沿接收机和卫星之间的向量计算接收机的第一速度。 从与接收机相关联的惯性参考单元接收接收机的第二速度。 计算沿向量到卫星的第二速度的分量。 然后计算第一和第二速度之间的差异并将其与预定值进行比较。 如果差超过预定值,则表示循环滑移误差。
    • 96. 发明授权
    • Automated differential correction processing of field data in a global
positional system
    • 全局位置系统中现场数据的自动差分校正处理
    • US6144335A
    • 2000-11-07
    • US60363
    • 1998-04-14
    • John F. RogersPeter Glen France
    • John F. RogersPeter Glen France
    • G01S19/32G01S5/14G01S19/44H04B7/185G01S5/02
    • G01S19/41G01S19/43
    • A system and method for automated differential correction processing of field data in a global positioning system (GPS). In one embodiment, the present invention retrieves GPS field data collected by one or more GPS receivers from a storage device, and then automatically selects the most appropriate differential correction scheme to generate a solution without user intervention. More specifically, the present invention executes a code-based correction scheme to generate a code-based solution for the field data. Next, the present invention examines the field data to determine whether a carrier phase correction is applicable. If the field data supports carrier phase correction, the present invention generates a carrier phase solution, compares it with the code-based solution, and returns the more accurate of the two solutions as the final result. If the field data does not support a carrier phase correction, the present invention returns the code-based solution as the final result. Thus, the present invention provides a system and method for post-processing of GPS field data which does not require a user to know and understand the contents of the field data, to deal with multiple user interfaces, or to read and interpret different results generated by various processing schemes. In other words, the present invention provides a single software package for post-processing of GPS field data without extensive user involvement. As such, the present invention greatly reduces the complexity of GPS field data post-processing and enhances the usability of GPS equipment.
    • 一种用于全球定位系统(GPS)中现场数据的自动差分校正处理的系统和方法。 在一个实施例中,本发明从存储设备中检索由一个或多个GPS接收器收集的GPS场数据,然后自动选择最合适的差分校正方案以产生无需用户干预的解决方案。 更具体地,本发明执行基于代码的校正方案以产生用于场数据的基于代码的解决方案。 接下来,本发明检查现场数据以确定载波相位校正是否适用。 如果现场数据支持载波相位校正,则本发明生成载波相位解决方案,将其与基于代码的解决方案进行比较,并且作为最终结果返回两种解决方案的准确性。 如果现场数据不支持载波相位校正,则本发明作为最终结果返回基于代码的解决方案。 因此,本发明提供了一种用于后处理GPS场数据的系统和方法,其不需要用户知道和理解现场数据的内容,处理多个用户界面,或者读取和解释产生的不同结果 通过各种处理方案。 换句话说,本发明提供了用于后期处理GPS场数据的单一软件包,而无需广泛的用户参与。 因此,本发明大大降低了GPS场数据后处理的复杂度,提高了GPS设备的可用性。
    • 98. 发明授权
    • Method and apparatus for smoothing code measurements in a global
positioning system receiver
    • 用于在全球定位系统接收机中平滑码测量的方法和装置
    • US5471217A
    • 1995-11-28
    • US12061
    • 1993-02-01
    • Ronald R. HatchJerry E. Knight
    • Ronald R. HatchJerry E. Knight
    • G01S1/00G01S5/14G01S19/32G01S19/44H04B7/185G01S5/02
    • G01S19/43G01S19/426
    • A technique for smoothing pseudorange code measurements made in a global positioning system (GPS) receiver, with carrier phase measurements, over an extended time interval but without distortion that usually results from a divergence between code-derived pseudorange measurements and carrier-derived measurements. The basic principle of the invention is to remove ionospheric effects and Doppler effects from the pseudorange code measurements prior to filtering over an extended time interval. Removal of ionospheric effects may be effected by applying corrections received from a reference receiver, or may be accomplished using measured or modeled ionospheric data available to the receiver. The invention is applicable to differential GPS position finding using remote receivers having only a single-frequency capability, but is also applicable to stand-alone GPS receivers of any type.
    • 一种用于平滑在全球定位系统(GPS)接收机中进行的伪距代码测量的技术,其具有载波相位测量,在延长的时间间隔上,但是没有通常由代码导出的伪距测量和载波导出的测量之间的差异产生的失真。 本发明的基本原理是在延长的时间间隔过滤之前,从伪距码测量中去除电离层效应和多普勒效应。 可以通过应用从参考接收器接收的校正来实现电离层效应的去除,或者可以使用接收机可用的测量或建模的电离层数据来实现。 本发明适用于使用仅具有单频能力的远程接收机的差分GPS位置查找,但也适用于任何类型的独立GPS接收机。