Patents by Inventor Lev B. Rapoport

Lev B. Rapoport has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9168946
    Abstract: A computer-implemented method for generating at least one segment of an offset path for a vehicle based on at least one segment of a base path is provided. The at least one segment of the base path is represented by a stored set of data points. The computer-implemented method includes comparing the at least one segment of the base path to a curvature constraint to determine if the at least one segment of the base path violates the curvature constraint. The curvature constraint is based on a characteristic of the vehicle and a desired offset distance from the at least one segment of the base path. The characteristic reflects the vehicle's ability to traverse at least one segment of a path. The method further includes modifying the at least one segment of the base path to satisfy the curvature constraint, if the at least one segment of the base path violates the curvature constraint.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: October 27, 2015
    Assignee: JAVAD GNSS, INC.
    Inventors: Javad Ashjaee, Alexander V. Pesterev, Lev B. Rapoport
  • Patent number: 9035826
    Abstract: A rover processor determines position of a rover based upon the interaction between multiple antennas located at the rover and multiple antennas located at a base. The rover antennas may include a rover master antenna having a phase center located at the centroid of the antennas patterns of at least two auxiliary rover antennas. The rover processor may determine the position of the rover master antenna based upon the relative positions of at least two rover antennas (e.g., the rover master antenna and at least one rover auxiliary antenna, or at least two rover auxiliary antennas) with respect to at least two antennas of a base transceiver.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: May 19, 2015
    Assignee: Javad GNSS, Inc.
    Inventors: Javad Ashjaee, Lev B. Rapoport, Dmitry Kinkulkin, Vladimir Yefriemov
  • Patent number: 8872700
    Abstract: The position of a global navigation satellite system (GNSS) surveying receiver is determined based on a plurality of RTK engines. A first RTK engine is implementing using a first set of parameters. A second RTK engine is implemented using a second set of parameter different than the first set. A plurality of GNSS signals are received from multiple satellites. At least one correction signal is received from at least one base receiver. A first position is determined from the first RTK engine based on the GNSS signals and the at least one correction signal. A second position is determined from the first RTK engine based on the GNSS signals and the at least one correction signal. A final position of the GNSS surveying receiver is determined based on the first position or the second position or a combination of both positions.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: October 28, 2014
    Assignee: Javad GNSS, Inc.
    Inventors: Javad Ashjaee, Lev B. Rapoport
  • Patent number: 8717232
    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.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: May 6, 2014
    Assignee: Javad GNSS, Inc.
    Inventors: Javad Ashjaee, Lev B. Rapoport, Mikhail Gribkov, Alexander I. Gribkov
  • Publication number: 20140081570
    Abstract: A graphics-aided geodesic device is provided. The device includes an antenna for receiving position data from a plurality of satellites and a receiver coupled to the antenna. The device further includes orientation circuitry for obtaining orientation data. The orientation data represents an orientation of the apparatus with respect to a plane parallel with a horizon. The device further includes positioning circuitry for determining the position of the point of interest based at least on the position data and the orientation data.
    Type: Application
    Filed: November 22, 2013
    Publication date: March 20, 2014
    Applicant: JAVAD GNSS, INC.
    Inventors: Javad ASHJAEE, Mikhail GRIBKOV, Lev B. RAPOPORT
  • Patent number: 8606498
    Abstract: The generation of a planar trajectory for use by a vehicle in guiding its position is described. The trajectory is generated by identifying points representing the trajectory, fairing the identified points to generate a set of faired points, and computing a set of polynomial segments from the faired points. The segments form a curve representing the trajectory, where the curve is C2-smooth, and the curve does not exceed the steering capability of the vehicle. The segments may comprise cubic B-spline segments. If the identified points are not substantially equidistant, then an auxiliary curve approximating the trajectory is generated, and a set of substantially equidistant points on the auxiliary curve is selected as the identified points.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: December 10, 2013
    Assignee: Javad GNSS, Inc.
    Inventors: Alexander V. Pesterev, Lev B. Rapoport, Michael Tkachenko
  • Publication number: 20120299936
    Abstract: A graphics-aided geodesic device is provided. The device includes an antenna for receiving position data from a plurality of satellites and a receiver coupled to the antenna. The device further includes orientation circuitry for obtaining orientation data. The orientation data represents an orientation of the apparatus with respect to a plane parallel with a horizon. The device further includes positioning circuitry for determining the position of the point of interest based at least on the position data and the orientation data.
    Type: Application
    Filed: November 21, 2011
    Publication date: November 29, 2012
    Applicant: JAVAD GNSS, Inc.
    Inventors: Javad Ashjaee, Mikhail Gribkov, Lev B. Rapoport
  • Publication number: 20120256788
    Abstract: The position of a global navigation satellite system (GNSS) surveying receiver is determined based on a plurality of RTK engines. A first RTK engine is implementing using a first set of parameters. A second RTK engine is implemented using a second set of parameter different than the first set. A plurality of GNSS signals are received from multiple satellites. At least one correction signal is received from at least one base receiver. A first position is determined from the first RTK engine based on the GNSS signals and the at least one correction signal. A second position is determined from the first RTK engine based on the GNSS signals and the at least one correction signal. A final position of the GNSS surveying receiver is determined based on the first position or the second position or a combination of both positions.
    Type: Application
    Filed: April 2, 2012
    Publication date: October 11, 2012
    Applicant: JAVAD GNSS, INC.
    Inventors: Javad ASHJAEE, Lev B. RAPOPORT
  • Publication number: 20120188122
    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.
    Type: Application
    Filed: January 18, 2012
    Publication date: July 26, 2012
    Applicant: JAVAD GNSS, Inc.
    Inventors: Javad Ashjaee, Lev B. Rapoport, Mikhail Gribkov, Alexander Gribkov
  • Patent number: 8224525
    Abstract: A method and apparatus for operating a vehicle under manual or automatic steering mode is disclosed herein. An estimation of an attraction domain of stability is calculated for the vehicle using the vehicle's current position and orientation information relative to a target trajectory. If an unstable estimation of the attraction domain is determined, then the vehicle is operated in manual mode under control of an operator.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: July 17, 2012
    Assignee: Javad GNSS, Inc.
    Inventors: Lev B. Rapoport, Alexander V. Pesterev
  • Publication number: 20120139784
    Abstract: A rover processor determines position of a rover based upon the interaction between multiple antennas located at the rover and multiple antennas located at a base. The rover antennas may include a rover master antenna having a phase center located at the centroid of the antennas patterns of at least two auxiliary rover antennas. The rover processor may determine the position of the rover master antenna based upon the relative positions of at least two rover antennas (e.g., the rover master antenna and at least one rover auxiliary antenna, or at least two rover auxiliary antennas) with respect to at least two antennas of a base transceiver.
    Type: Application
    Filed: February 8, 2012
    Publication date: June 7, 2012
    Applicant: JAVAD GNSS, Inc.
    Inventors: Javad Ashjaee, Lev B. Rapoport, Dmitry Kinkulkin, Vladimir Yefriemov
  • Publication number: 20120050099
    Abstract: A handheld GNSS device for determining position data for a point of interest is provided. The 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 for displaying image data and orientation data to assist a user in positioning the device. The device further includes a GNSS antenna and at least one communication antenna, both integral with the housing. The GNSS antenna receives position data from a plurality of satellites. One or more communication antennas receive positioning assistance data related to the position data from a base station. The GNSS antenna has a first antenna pattern, and the at least one communication antenna has a second antenna pattern. The GNSS antenna and the communication antenna(s) are configured such that the first and second antenna patterns are substantially separated. Coupled to the GNSS antenna, within the housing, is at least one receiver.
    Type: Application
    Filed: August 30, 2010
    Publication date: March 1, 2012
    Applicant: JAVAD GNSS, INC.
    Inventors: Javad ASHJAEE, Lev B. Rapoport, Mikhail Gribkov, Alexander Gribkov
  • Patent number: 8125376
    Abstract: A handheld GNSS device for determining position data for a point of interest is provided. The 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 for displaying image data and orientation data to assist a user in positioning the device. The device further includes a GNSS antenna and at least one communication antenna, both integral with the housing. The GNSS antenna receives position data from a plurality of satellites. One or more communication antennas receive positioning assistance data related to the position data from a base station. The GNSS antenna has a first antenna pattern, and the at least one communication antenna has a second antenna pattern. The GNSS antenna and the communication antenna(s) are configured such that the first and second antenna patterns are substantially separated. Coupled to the GNSS antenna, within the housing, is at least one receiver.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: February 28, 2012
    Assignee: Javad GNSS, Inc.
    Inventors: Javad Ashjaee, Lev B. Rapoport, Mikhail Gribkov, Alexander Gribkov
  • Patent number: 8120527
    Abstract: A rover processor determines position of a rover based upon the interaction between multiple antennas located at the rover and multiple antennas located at a base. The rover antennas may include a rover master antenna having a phase center located at the centroid of the antennas patterns of at least two auxiliary rover antennas. The rover processor may determine the position of the rover master antenna based upon the relative positions of at least two rover antennas (e.g., the rover master antenna and at least one rover auxiliary antenna, or at least two rover auxiliary antennas) with respect to at least two antennas of a base transceiver.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: February 21, 2012
    Assignee: Javad GNSS, Inc.
    Inventors: Javad Ashjaee, Lev B. Rapoport, Dmitry Kinkulkin, Vladimir Yefriemov
  • Publication number: 20110231057
    Abstract: A computer-implemented method for generating at least one segment of an offset path for a vehicle based on at least one segment of a base path is provided. The at least one segment of the base path is represented by a stored set of data points. The computer-implemented method includes comparing the at least one segment of the base path to a curvature constraint to determine if the at least one segment of the base path violates the curvature constraint. The curvature constraint is based on a characteristic of the vehicle and a desired offset distance from the at least one segment of the base path. The characteristic reflects the vehicle's ability to traverse at least one segment of a path. The method further includes modifying the at least one segment of the base path to satisfy the curvature constraint, if the at least one segment of the base path violates the curvature constraint.
    Type: Application
    Filed: March 19, 2010
    Publication date: September 22, 2011
    Applicant: JAVAD GNSS, INC.
    Inventors: Javad Ashjaee, Alexander V. Pesterev, Lev B. Rapoport
  • Publication number: 20090189804
    Abstract: A rover processor determines position of a rover based upon the interaction between multiple antennas located at the rover and multiple antennas located at a base. The rover antennas may include a rover master antenna having a phase center located at the centroid of the antennas patterns of at least two auxiliary rover antennas. The rover processor may determine the position of the rover master antenna based upon the relative positions of at least two rover antennas (e.g., the rover master antenna and at least one rover auxiliary antenna, or at least two rover auxiliary antennas) with respect to at least two antennas of a base transceiver.
    Type: Application
    Filed: January 27, 2009
    Publication date: July 30, 2009
    Applicant: Javad GNSS, Inc.
    Inventors: Javad Ashjaee, Lev B. Rapoport, Dmitry Kinkulkin, Vladimir Yefriemov
  • Publication number: 20080208454
    Abstract: The generation of a planar trajectory for use by a vehicle in guiding its position is described. The trajectory is generated by identifying points representing the trajectory, fairing the identified points to generate a set of faired points, and computing a set of polynomial segments from the faired points. The segments form a curve representing the trajectory, where the curve is C2-smooth, and the curve does not exceed the steering capability of the vehicle. The segments may comprise cubic B-spline segments. If the identified points are not substantially equidistant, then an auxiliary curve approximating the trajectory is generated, and a set of substantially equidistant points on the auxiliary curve is selected as the identified points.
    Type: Application
    Filed: February 15, 2008
    Publication date: August 28, 2008
    Applicant: JAVAD GNSS, INC.
    Inventors: Alexander V. Pesterev, Lev B. Rapoport, Michael Tkachenko