公开(公告)号：US08717232B2

公开(公告)日：2014-05-06

申请号：US13353220

申请日：2012-01-18

Applicant: Javad Ashjaee ,  Lev B. Rapoport ,  Mikhail Gribkov ,  Alexander I. Gribkov

Inventor： Javad Ashjaee ,  Lev B. Rapoport ,  Mikhail Gribkov ,  Alexander I. Gribkov

IPC: G01S19/40 ,  G01S19/47 ,  G01S19/51 ,  G01S19/14

CPC classification number: G01S19/43 ,  G01C11/00 ,  G01S5/16 ,  G01S19/47

Abstract: A handheld GNSS device includes a housing, handgrips integral to the housing for enabling a user to hold the device, and a display screen integral with the housing. The device has a GNSS antenna and a communication antenna, both integral with the housing. The GNSS antenna receives position data from GNSS satellites. The communication antenna receives positioning assistance data from a base station. The GNSS antenna has a first antenna pattern, and the communication antenna has a second antenna pattern. The first and second antenna patterns are substantially separated. Coupled to the GNSS antenna, within the housing, is at least one receiver. Further, the device includes, within the housing, orientation circuitry for generating orientation data, imaging circuitry for obtaining image data, and positioning circuitry for determining a position for the point of interest based on the position data, the positioning assistance data, the orientation data, and the image data.

Abstract translation: 手持GNSS装置包括壳体，与壳体一体的手柄，用于使用户能够握持装置，以及与壳体一体的显示屏。 该设备具有GNSS天线和与壳体一体的通信天线。 GNSS天线从GNSS卫星接收位置数据。 通信天线从基站接收定位辅助数据。 GNSS天线具有第一天线方向图，并且通信天线具有第二天线方向图。 第一和第二天线图案基本分离。 耦合到GNSS天线，在壳体内，是至少一个接收器。 此外，该设备在壳体内包括用于产生取向数据的定向电路，用于获得图像数据的成像电路和用于基于位置数据，定位辅助数据，定位数据确定兴趣点的位置的定位电路 ，和图像数据。

公开(公告)号：US20120293365A1

公开(公告)日：2012-11-22

申请号：US13301633

申请日：2011-11-21

Applicant: Javad Ashjaee ,  Mikhail Gribkov

Inventor： Javad Ashjaee ,  Mikhail Gribkov

IPC: G01S19/22 ,  G01S19/42

CPC classification number: G01S19/22 ,  G01S19/28 ,  G01S19/35

Abstract: A method for mitigating the effects of multipath errors in GNSS devices is provided. Signals from GNSS satellites are received. Image data from an image sensor is received. Orientation data from an orientation sensor is received. The orientation data describes the orientation of the image sensor. Obstruction data is determined based on the image data. The obstruction data includes an obstruction region that indicates the sky in that region is obstructed by a structure. Based on the orientation data, obstruction data, and GNSS satellite location data, the position of GNSS satellites with respect to the obstruction region is determined. The location of the GNSS device is determined based on signals from some of the GNSS satellites and the position of GNSS satellites with respect to the obstruction region.

Abstract translation: 提供了一种减轻GNSS设备中多路径错误影响的方法。 接收来自GNSS卫星的信号。 接收来自图像传感器的图像数据。 接收来自定位传感器的定向数据。 方向数据描述图像传感器的方向。 根据图像数据确定障碍物数据。 障碍物数据包括指示在该区域被结构阻挡的天空的阻塞区域。 基于取向数据，障碍物数据和GNSS卫星定位数据，确定GNSS卫星相对于阻塞区域的位置。 基于来自一些GNSS卫星的信号和GNSS卫星相对于阻塞区域的位置来确定GNSS设备的位置。

公开(公告)号：US20120229333A1

公开(公告)日：2012-09-13

申请号：US13228348

申请日：2011-09-08

Applicant: Javad Ashjaee ,  Sergey Yudanov

Inventor： Javad Ashjaee ,  Sergey Yudanov

IPC: G01S19/46 ,  G01S19/42

CPC classification number: G01S19/21 ,  G01S19/35 ,  H04B17/23 ,  H04B17/318

Abstract: An apparatus for determining signal strength data within at least one allocated GNSS frequency band is provided. The apparatus includes a GNSS antenna. The GNSS antenna receives signals within the allocated GNSS frequency band. The apparatus further includes receiving circuitry. The receiving circuitry is for demodulating the received signals. The apparatus further includes a processor and memory for storing instructions, executable by the processor. The instructions include instructions for generating signal strength data for the received signals within the GNSS allocated frequency based on the demodulated signals, and for determining a position for a point of interest based upon the demodulated signals. Included in the apparatus is a display screen for displaying a graphical representation of the signal strength data of at least a portion of the at least one GNSS allocated frequency band. The graphical representation identifies interference within at least the portion of the at least one GNSS allocated frequency band.

Abstract translation: 提供一种用于在至少一个分配的GNSS频带内确定信号强度数据的装置。 该装置包括GNSS天线。 GNSS天线在分配的GNSS频带内接收信号。 该装置还包括接收电路。 接收电路用于解调所接收的信号。 该装置还包括处理器和用于存储可由处理器执行的指令的存储器。 指令包括用于基于解调信号在GNSS分配频率内产生接收信号的信号强度数据的指令，以及用于基于解调信号来确定兴趣点的位置。 装置中包括用于显示至少一个GNSS分配频带的至少一部分的信号强度数据的图形表示的显示屏幕。 该图形表示在至少一个GNSS分配的频带的至少一部分内识别干扰。

公开(公告)号：US08094087B2

公开(公告)日：2012-01-10

申请号：US12234605

申请日：2008-09-19

Applicant: Javad Ashjaee ,  Alexander Andreevich Vyazov

Inventor： Javad Ashjaee ,  Alexander Andreevich Vyazov

IPC: H01Q1/08

CPC classification number: H01Q1/28 ,  G01S19/04 ,  G01S19/13 ,  G01S19/36 ,  G01S19/44 ,  H01Q21/205

Abstract: A portable navigation apparatus is provided. The apparatus includes a multi-antenna assembly configured for including an expanded configuration and a collapsed configuration. The antenna assembly includes a master antenna, and at least two auxiliary antennas. The at least two auxiliary antennas are radially distributed about the master antenna. Furthermore, the master antenna and auxiliary antennas are substantially coplanar when the antenna assembly is in the expanded configuration.

Abstract translation: 提供便携式导航装置。 该装置包括被配置为包括扩展配置和折叠配置的多天线组件。 天线组件包括主天线和至少两个辅助天线。 至少两个辅助天线围绕主天线径向分布。 此外，当天线组件处于扩展配置时，主天线和辅助天线基本上共面。

公开(公告)号：US20100164798A1

公开(公告)日：2010-07-01

申请号：US12347218

申请日：2008-12-31

Applicant: Sergey YUDANOV ,  Vyacheslav VARYUKHIN ,  Nikolay SHURYGIN ,  Stanislav SILA-NOVITSKIY ,  Javad ASHJAEE

Inventor： Sergey YUDANOV ,  Vyacheslav VARYUKHIN ,  Nikolay SHURYGIN ,  Stanislav SILA-NOVITSKIY ,  Javad ASHJAEE

IPC: G01S1/00

CPC classification number: G01S19/235

Abstract: Dynamic inter-channel bias calibration of a navigational receiver is provided. A reference signal is propagated through front end circuitry of the receiver. A delay caused by the propagation of the reference signal through the front end circuitry is measured. The inter-channel bias of the navigational receiver is reduced using the measured delay associated with the front end circuitry of the receiver.

Abstract translation: 提供导航接收机的动态信道间偏置校准。 参考信号通过接收器的前端电路传播。 测量由参考信号通过前端电路传播引起的延迟。 使用与接收机的前端电路相关联的测量延迟来减少导航接收机的信道间偏置。

公开(公告)号：US06674399B2

公开(公告)日：2004-01-06

申请号：US10226736

申请日：2002-08-22

Applicant: Mark Isaakovich Zhodzishky ,  Victor Abramovich Veitsel ,  Michail Y. Vorobiev ,  Javad Ashjaee

Inventor： Mark Isaakovich Zhodzishky ,  Victor Abramovich Veitsel ,  Michail Y. Vorobiev ,  Javad Ashjaee

IPC: G01S514

CPC classification number: H04B7/18552 ,  G01S19/37 ,  G01S19/41 ,  G01S19/44

Abstract: GPS and GLONASS Satellites broadcast code signals which are modulated onto respective carrier signals, and which are received by two receivers on Earth. The first receiver is situated at a point with known coordinates. The results of its measurements are transmitted to a user at a second receiver through a connection link, the user wanting to know the position of the second receiver. The measurements of two receivers are related to a common time moment by extrapolating measurement data that has arrived through the connection link with a delay. An extrapolating unit examines the measurements to find and discard measurements with abnormal errors, and generates extrapolated measurement data (e.g., predictions) for the common time based upon the most reliable data. This enables the measurements of code delays and carrier phase shifts in the satellite signals received by two receivers to be processed for the position of the second receiver.

Abstract translation: GPS和GLONASS卫星广播代码信号，其被调制到相应的载波信号上，并由地球上的两个接收机接收。 第一个接收器位于具有已知坐标的点上。 其测量结果通过连接链路在第二接收机处发送给用户，用户希望知道第二接收机的位置。 两个接收机的测量结果与通过延时通过连接链路到达的测量数据的公共时间相关。 外推单元检查测量结果以发现和丢弃具有异常错误的测量，并且基于最可靠的数据生成公共时间的外推测量数据（例如，预测）。 这使得能够对由两个接收机接收的卫星信号中的码延迟和载波相移进行测量，以对第二接收机的位置进行处理。

公开(公告)号：US06659409B2

公开(公告)日：2003-12-09

申请号：US10104871

申请日：2002-03-21

Applicant: Javad Ashjaee

Inventor： Javad Ashjaee

IPC: F16M1138

CPC classification number: G01C15/06 ,  F16M11/046 ,  F16M11/242 ,  F16M2200/027

Abstract: A positioning pole comprising an elongated center pole, a first guide disposed on an outer surface of the center pole, a first support leg, and a first attachment coupler which pivotally attaches the first support leg to the first guide. The first guide has an elongated dimension oriented parallel to the elongated dimension of the pole. The first attachment coupler has an elongated dimension oriented parallel to the elongated dimension of the guide, a first face, and a second face. The first face of the first attachment coupler has a contoured surface interfitting with the pole's first guide and enables the first attachment coupler to slide along the elongated dimension of the first guide without separating from the guide in directions that are perpendicular to the guide's elongated dimension. A locking mechanism locks the attachment coupler to a corresponding guide once a desired position is found for the support leg.

Abstract translation: 定位杆包括细长的中心极，设置在中心极的外表面上的第一引导件，第一支撑腿和将第一支撑腿枢转地附接到第一引导件的第一附接联接器。 第一引导件具有平行于极细长尺寸的细长尺寸。 第一连接耦合器具有平行于引导件的细长尺寸，第一面和第二面定向的细长尺寸。 第一附接联接器的第一面具有与杆的第一引导件相互配合的轮廓表面，并且使得第一连接联接器能够沿着垂直于引导件的细长尺寸的方向沿着第一引导件的细长尺寸滑动而不从引导件分离。 一旦找到用于支撑腿的所需位置，锁定机构将附接联接器锁定到相应的引导件。

公开(公告)号：US06278407B1

公开(公告)日：2001-08-21

申请号：US09255932

申请日：1999-02-23

Applicant: Javad Ashjaee ,  Vladimir S. Filippov ,  Dmitry V. Tatarnikov ,  Andrej V. Astakhov ,  Igor V. Sutjagin

Inventor： Javad Ashjaee ,  Vladimir S. Filippov ,  Dmitry V. Tatarnikov ,  Andrej V. Astakhov ,  Igor V. Sutjagin

IPC: H01Q138

CPC classification number: H01Q19/10 ,  H01Q9/0407 ,  H01Q9/0478

Abstract: Choke-ring ground planes are commonly used for multipath rejection in geodetic surveying systems. Such ground planes consist of a thick metal disc with deep grooves on one of the flat surfaces. An antenna is mounted in the center of the grooved surface. Known ground planes used in dual frequency communication systems (L1 and L2) could not be constructed to have good rejection of multipath signals in both L1 and L2 frequencies; instead, they are constructed for good rejection of multipath signals in L2 but not good for the rejection of multipath signals in L1. A first invention provides for equally good multipath rejection for both L1 and L2 frequencies by incorporating novel electromagnetic filter structures within the choke-ring grooves. The filter structures of the present invention enable the choke ring to provide multipath rejection in each frequency band which is as good as, or better than, the multipath rejection achieved in the L2 band with existing devices. A second invention provides for groove depths which are less than one-quarter wavelength of the frequency which has the longer wavelength (e.g., the L2 frequency in the GPS system). The shorter groove depth of the second invention provides better multipath rejection for the L2. Both inventions may be used together to improve multipath rejection for both L1 and L2 bands. A third invention of the application relates to methods of constructing choke ring ground planes which may be applied to the other inventions disclosed herein as well as existing prior art ground planes and future ground planes.

Abstract translation: 扼流圈接地平面通常用于大地测量系统中的多径拒收。 这种接地平面由在其中一个平坦表面上具有深槽的厚金属盘组成。 天线安装在带槽表面的中心。 在双频通信系统（L1和L2）中使用的已知接地层不能被构造为在L1和L2频率中具有良好的多径信号抑制; 相反，它们被构造为在L2中对多径信号的良好抑制，但不利于L1中的多径信号的抑制。 第一发明通过在扼流环槽内并入新颖的电磁滤波器结构来为L1和L2频率提供同样好的多路径抑制。 本发明的滤波器结构使得扼流环能够在每个频带中提供与现有设备的L2频带中实现的多径抑制一样好或更好的多径抑制。 第二个发明提供的槽深度小于具有较长波长（例如，GPS系统中的L2频率）的频率的四分之一波长。 第二发明的较短沟槽深度为L2提供更好的多径抑制。 两个发明可以一起使用以改善L1和L2频带的多径抑制。 本申请的第三个发明涉及可应用于本文公开的其它发明以及现有现有技术接地平面和未来接地平面的构造扼流环接地层的方法。

公开(公告)号：US06268824B1

公开(公告)日：2001-07-31

申请号：US09399077

申请日：1999-09-18

Applicant: Mark Isaakovich Zhodzishky ,  Victor Abramovich Veitsel ,  Michail Y. Vorobiev ,  Javad Ashjaee

Inventor： Mark Isaakovich Zhodzishky ,  Victor Abramovich Veitsel ,  Michail Y. Vorobiev ,  Javad Ashjaee

IPC: G01S502

CPC classification number: H04B7/18552 ,  G01S19/37 ,  G01S19/41 ,  G01S19/44

Abstract: Satellites of the GPS and GLONASS navigation systems broadcast code signals which are modulated onto respective carrier signals, and which are received by two receivers on Earth. The first receiver is situated at a point with known coordinates. The results of its measurements are transmitted to a user at a second receiver through a connection link, the user being interested in knowing his or her positioning. The second receiver is similar to the first receiver and it receives the signals of the same satellites. By processing data from the measurements of code delays and carrier phase shifts in the satellite signals received by two receivers, the methods and apparatuses of the inventions of the present application determine the location of the user with high precision and make the time indications of receiver clocks more accurate and exact. In the first invention, the measurements of two receivers are related to a common time moment by extrapolating measurement data that has arrived through the connection link with a delay. This common time moment is defined by the user. An extrapolating unit examines the measurements to find and discard measurements with abnormal errors. The unit then generates extrapolated measurement data (e.g., predictions) for the common time based upon the most reliable data. In the second invention, cycle slips in the phase-lock loops (PLLs) of the receivers, which may be caused by blockage of direct signals from the satellites, strong interference signals, and reflections, are detected and corrected in a multi-loop nonlinear tracking system. In the third invention, the procedure of resolution of phase measurement ambiguities comprises the preliminary estimation of floating ambiguities by a recurrent (e.g., iterative) procedure including the simultaneous processing of code and phase measurements for all satellites for each processing time interval, and the gradual improvement of the result as the information is accumulated. After the resolution of ambiguity, the user coordinates are estimated with centimeter accuracy on the basis of phase measurements on the carrier frequency.

公开(公告)号：US06219376B1

公开(公告)日：2001-04-17

申请号：US09027550

申请日：1998-02-21

Applicant: Mark I. Zhodzishsky ,  Michail Y. Vorobiev ,  Victor A. Prasolov ,  Javad Ashjaee

Inventor： Mark I. Zhodzishsky ,  Michail Y. Vorobiev ,  Victor A. Prasolov ,  Javad Ashjaee

IPC: H04B1500

CPC classification number: H04B1/1036

Abstract: Method of suppression of narrow-band interferences attending at the receiver input added to the useful broadband signal and noise. There is a disclosed compensator rejecting narrow-band interferences by means of adjustment loops. Two general methods of construction of such loops are considered. The first general method is based on filtration of the in-phase and quadrature components of the error vector—difference of the interference vector and compensating vector. The second method is based on filtration of the amplitude and full phase of the interference signal. Automatic tuning of the compensator to the mean frequency and effective interference band is ensured.

Abstract translation: 抑制在接收机输入端附加到有用的宽带信号和噪声的窄带干扰的方法。有一个公开的补偿器通过调整环路拒绝窄带干扰。 考虑构建这种环的两种一般方法。 第一种一般方法是基于干涉矢量和补偿矢量的误差向量差的同相和正交分量的滤波。 第二种方法是基于过滤干扰信号的幅度和全相。 确保补偿器自动调谐到平均频率和有效干扰频带。