公开(公告)号：US06313789B1

公开(公告)日：2001-11-06

申请号：US09330221

申请日：1999-06-10

Applicant: Mark Zhodzishsky ,  Javad Ashjaee

Inventor： Mark Zhodzishsky ,  Javad Ashjaee

IPC: H04B7185

CPC classification number: H04B1/7085 ,  G01S19/29 ,  H04B2201/70715

Abstract: Disclosed are methods for increasing the fail-safety characteristics of tracking systems for navigation receivers which receive signals from many satellites. In an exemplary embodiment of the present invention, an individual PLL circuit is used to track the phase of each satellite's carrier signal, and a vector common tracking loop is used to track the disturbances of the carrier phases which are caused by one or more common sources, such as the movement of the receiver's antenna(s) and/or the phase fluctuation of the receiver's main reference oscillator. The vector common tracking loop uses phase information from all of the satellites being tracked, and for this reason can be made more wide-band than each of the individual PLL circuits. The wider bandwidth of the vector common tracking loop provides higher dynamic properties and more safe tracking when faint and weakening satellite signals are present. In another embodiment of the invention, the receiver receives the satellite signals from M≧3 antennas mounted on a common object, and three common tracking loops are added to track the object's rotation about its three rotational axes. The common object may comprise any structure, rigid member, or vehicle, such as for example: a platform, pole, aircraft, ship, boat, car, truck, train car, etc. With N satellites being tracked with M antennas, this embodiment performs the joint tracking of up to N×M signals, which increases tracking reliability. The present invention may be used in digital receivers of GPS and GLONASS(GLN) systems where the receiver receives a large number of such signals from many satellites and processes them in order to receive information about the current time and the location and movement of the receiver.

Abstract translation: 公开了用于增加从许多卫星接收信号的导航接收机的跟踪系统的故障安全特性的方法。 在本发明的一个示例性实施例中，使用单独的PLL电路来跟踪每个卫星的载波信号的相位，并且使用向量公共跟踪环路来跟踪由一个或多个公共源引起的载波相位的干扰 ，例如接收机的天线的移动和/或接收机主参考振荡器的相位波动。 矢量公共跟踪环路使用来自所有被跟踪的卫星的相位信息，因此可以比各个PLL电路更宽带。 当存在微弱和弱化的卫星信号时，矢量公共跟踪环的较宽带宽提供更高的动态特性和更安全的跟踪。 在本发明的另一个实施例中，接收机接收来自安装在公共物体上的M> = 3个天线的卫星信号，并且添加三个公共跟踪环以跟踪对象围绕其三个旋转轴的旋转。 共同的物体可以包括任何结构，刚性构件或车辆，例如：平台，杆，飞机，船，船，汽车，卡车，火车等。具有M个天线的N个卫星被跟踪，该实施例 执行高达NxM信号的联合跟踪，这增加了跟踪可靠性。 本发明可以用于GPS和GLONASS（GLN）系统的数字接收机中，其中接收机从许多卫星接收大量这样的信号并处理它们，以便接收关于当前时间的信息以及接收机的位置和移动 。

公开(公告)号：US09103912B2

公开(公告)日：2015-08-11

申请号：US13237658

申请日：2011-09-20

Applicant: Sergey Yudanov ,  Vyacheslav Varyukhin ,  Nikolay Shurygin ,  Javad Ashjaee

Inventor： Sergey Yudanov ,  Vyacheslav Varyukhin ,  Nikolay Shurygin ,  Javad Ashjaee

IPC: G01S19/23 ,  G01S19/33

CPC classification number: G01S19/33 ,  G01S19/23

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。 参考信号通过接收机的前端电路传播。 测量由参考信号通过前端电路的传播引起的延迟。 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：US08717233B2

公开(公告)日：2014-05-06

申请号：US13301633

申请日：2011-11-21

Applicant: Javad Ashjaee ,  Mikhail Gribkov

Inventor： Javad Ashjaee ,  Mikhail Gribkov

IPC: G01S19/42 ,  G01S19/22

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：US06633256B2

公开(公告)日：2003-10-14

申请号：US09938781

申请日：2001-08-24

Applicant: Alexey Vladislavovich Zhdanov ,  Javad Ashjaee

Inventor： Alexey Vladislavovich Zhdanov ,  Javad Ashjaee

IPC: G01S502

CPC classification number: G01S19/22 ,  G01C15/00 ,  G01S19/44

Abstract: Methods and systems for measuring coordinates of a target, particularly under strong multipath conditions, are described. A satellite navigation system antenna and a tilt sensor are mounted on a range pole, with the sensor at the pole's bottom tip. Signals from the antenna and tilt sensor are provided to a receiver, which computes the antenna's coordinates from the antenna signals, and the pole tips position from the computed coordinates and the tilt data. The operator places the pole tip on the target and swings the pole by hand over an angle sector of 15 degrees while keeping the tip on the target. Height of the target can be computed with a single measurement set, and X-Y coordinates with just three measurement sets. The use of additional measurements reduces errors in the target's coordinates since multipath errors are uncorrelated during movement of the antenna. Vertical alignment of the pole is unnecessary.

Abstract translation: 描述了用于测量目标的坐标的方法和系统，特别是在强多径条件下。 卫星导航系统天线和倾斜传感器安装在距离极上，传感器位于极底部。 来自天线和倾斜传感器的信号被提供给接收机，其从天线信号计算天线的坐标，并从所计算的坐标和倾斜数据计算极点位置。 操作者将极尖放置在目标上，并用手将杆倾斜15度的角度，同时将尖端保持在目标上。 目标的高度可以用单个测量集来计算，而X-Y坐标只有三个测量集。 使用额外的测量可减少目标坐标系中的误差，因为天线移动期间多径误差不相关。 杆的垂直对齐是不必要的。

公开(公告)号：US06463091B1

公开(公告)日：2002-10-08

申请号：US09577023

申请日：2000-05-23

Applicant: Mark Zhodzicshsky ,  Victor Veitsel ,  Stanislov Sila-Novatisky ,  Javad Ashjaee ,  Lionel Garin

Inventor： Mark Zhodzicshsky ,  Victor Veitsel ,  Stanislov Sila-Novatisky ,  Javad Ashjaee ,  Lionel Garin

IPC: H04K100

CPC classification number: H04B1/7085 ,  G01S19/22 ,  G01S19/29 ,  G01S19/30 ,  G01S19/37 ,  H04B1/709 ,  H04B1/7117

Abstract: A receiver of a radio frequency signal having a pseudo-random noise (PRN) code, and techniques of processing such a signal that are especially adapted for ranging applications. A signal corresponding to the PRN code is locally generated and used for decoding the received signal in a manner to reduce ranging errors that can result when multipath (delayed) versions of the radio frequency signal are also present. A significant application of the receiver and signal processing techniques of the present invention is in a Global Positioning System (GPS), wherein a number of such signals from several satellites are simultaneously received and processed in order to obtain information of the position, movement, or the like, of the receiver. A delay locked loop (DLL) correlator, provided in each of the receiver's multiple processing channels, locks onto a line of sight signal from one of the satellites with the effect of any multipath signal(s) being significantly reduced.

Abstract translation: 具有伪随机噪声（PRN）码的射频信号的接收机，以及处理特别适用于测距应用的信号的技术。 对应于PRN码的信号被本地生成，并用于以减少在射频信号的多径（延迟）版本也可能导致的测距误差的方式对接收信号进行解码。 本发明的接收机和信号处理技术的显着应用在全球定位系统（GPS）中，其中来自几个卫星的多个这样的信号被同时接收和处理，以获得位置，运动或 接收器的类似物。 在每个接收机的多个处理通道中提供的延迟锁定环（DLL）相关器锁定来自卫星之一的视线信号，其中任何多径信号的作用被显着地减小。

公开(公告)号：US06337657B1

公开(公告)日：2002-01-08

申请号：US09522323

申请日：2000-03-09

Applicant: Mark I. Zhodzishsky ,  Peter P. Zagnetov ,  Javad Ashjaee

Inventor： Mark I. Zhodzishsky ,  Peter P. Zagnetov ,  Javad Ashjaee

IPC: G06F16500

CPC classification number: G01S19/41 ,  G01S19/43

Abstract: Disclosed are methods and apparatuses for generating the estimates of receiver's coordinates and/or time offset for a moment of time tn without large errors caused by short-term shading of a part of the observable global positioning satellites and also without large dynamic errors caused by the receiver movement. The receiver may be stationary or mobile (i.e., rovering). A set of snapshot-solution values for the position coordinates and time offset of the receiver at the time moment tn, and a set of predicted values for the position coordinates and time offset of the receiver at the time moment tn are generated. The accuracy of each of these sets are determined, and a set of refined estimates for the position and time offset of the receiver is generated based the snapshot solution values, the predicted position values, and the accuracies.

Abstract translation: 公开了用于生成时刻tn的接收机坐标和/或时间偏移的估计的方法和装置，没有由可观测的全球定位卫星的一部分的短期阴影引起的大的误差，并且还没有由 接收机运动。 接收机可以是固定的或移动的（即，流动的）。 生成在时间tn处接收机的位置坐标和时间偏移的一组快照解决方案值，以及在时刻tn处的接收机的位置坐标和时间偏移的一组预测值。 确定这些集合中的每一个的精度，并且基于快照解决方案值，预测位置值和准确度生成针对接收者的位置和时间偏移的精确估计集合。

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。