Patents by Inventor Sergey Yudanov
Sergey Yudanov 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).
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Patent number: 11209550Abstract: 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.Type: GrantFiled: September 8, 2011Date of Patent: December 28, 2021Assignee: Javad GNSS, Inc.Inventors: Javad Ashjaee, Sergey Yudanov
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Patent number: 9671497Abstract: Systems and methods for synchronizing a global navigation satellite system (GNSS) receiver with a GNSS signal are provided. In one example, a GNSS receiver may include one or more sets of 20 GNSS channels that are each configured to integrate a received GNSS signal over a 20 millisecond accumulation window to output a navigation message bit. The accumulation windows of the 20 GNSS channels may be delayed relative to other windows of the 20 GNSS channels by 1 millisecond. The GNSS receiver may identify one of the 20 GNSS channels having the correct synchronization with the GNSS signal based on the navigation message bits output by the 20 GNSS channels. The identified GNSS channel having the correct synchronization with the GNSS signal may be used to determine a location of the GNSS receiver.Type: GrantFiled: May 9, 2014Date of Patent: June 6, 2017Assignee: JAVAD GNSS, INC.Inventors: Javad Ashjaee, Sergey Yudanov
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Publication number: 20150323676Abstract: Systems and methods for synchronizing a global navigation satellite system (GNSS) receiver with a GNSS signal are provided. In one example, a GNSS receiver may include one or more sets of 20 GNSS channels that are each configured to integrate a received GNSS signal over a 20 millisecond accumulation window to output a navigation message bit. The accumulation windows of the 20 GNSS channels may be delayed relative to other windows of the 20 GNSS channels by 1 millisecond. The GNSS receiver may identify one of the 20 GNSS channels having the correct synchronization with the GNSS signal based on the navigation message bits output by the 20 GNSS channels. The identified GNSS channel having the correct synchronization with the GNSS signal may be used to determine a location of the GNSS receiver.Type: ApplicationFiled: May 9, 2014Publication date: November 12, 2015Applicant: JAVAD GNSS, INC.Inventors: Javad ASHJAEE, Sergey YUDANOV
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Patent number: 9103912Abstract: 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.Type: GrantFiled: September 20, 2011Date of Patent: August 11, 2015Assignee: Javad GNSS, Inc.Inventors: Sergey Yudanov, Vyacheslav Varyukhin, Nikolay Shurygin, Javad Ashjaee
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Publication number: 20140062778Abstract: Systems and methods for detecting and displaying cycle slips are provided. In one example method, a first L1 signal and a second L2 signal may be received. The coarse/acquisition code from the L1 signal may be extracted and may be monitored to detect a phase shift in the code. In response to detecting a phase shift in the code, a data bit of the L1 signal may be monitored for a predetermined length of time to detect a change in the data bit. A cycle slip may be detected in response to detecting a change in the data bit during the predetermined length of time. In another example, a cycle slip may be detected in response to detecting a change between a phase of the L1 signal and a phase of the L2 signal.Type: ApplicationFiled: August 28, 2013Publication date: March 6, 2014Applicant: JAVAD GNSS, INC.Inventors: Javad ASHJAEE, Sergey YUDANOV
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REMOTE VISUALIZATION OF BAND-SPECTRUM INTERFERENCE FOR A GLOBAL NAVIGATION SATELLITE SYSTEM RECEIVER
Publication number: 20130016006Abstract: An apparatus for determining signal strength data within allocated GNSS frequency band(s) 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.Type: ApplicationFiled: September 20, 2012Publication date: January 17, 2013Inventors: Javad ASHJAEE, Sergey YUDANOV -
Publication number: 20120242542Abstract: 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.Type: ApplicationFiled: September 20, 2011Publication date: September 27, 2012Applicant: JAVAD GNSS, Inc.Inventors: Sergey YUDANOV, Vyacheslav VARYUKHIN, Nikolay SHURYGIN, Javad ASHJAEE
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Publication number: 20120229333Abstract: 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.Type: ApplicationFiled: September 8, 2011Publication date: September 13, 2012Applicant: JAVAD GNSS, INC.Inventors: Javad Ashjaee, Sergey Yudanov
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Patent number: 8022868Abstract: 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.Type: GrantFiled: December 31, 2008Date of Patent: September 20, 2011Assignee: JAVAD GNSS, Inc.Inventors: Sergey Yudanov, Vyacheslav Varyukhin, Nikolay Shurygin, Stanislav Sila-Novitskiy, Javad Ashjaee
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Publication number: 20100164798Abstract: 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.Type: ApplicationFiled: December 31, 2008Publication date: July 1, 2010Inventors: Sergey YUDANOV, Vyacheslav VARYUKHIN, Nikolay SHURYGIN, Stanislav SILA-NOVITSKIY, Javad ASHJAEE
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Patent number: 7495607Abstract: Disclosed is an adaptive receiver configured to receive signals from satellite navigation systems to determine receiver coordinates and configured to use a co-op tracking system to evaluate full phases of carrier phases for N navigation satellites in view. The adaptive receiver includes channels with autonomous wideband phase lock loops (PLLs) in a guiding status. The wideband PLLs are configured to track phases of carrier signals from satellites having high SNR and configured to produce control codes for target designations of varying carrier frequency. The adaptive receiver also includes channels with narrow-band PLLs in a guided status. The narrow-band PLLs can track phases of carrier signals of satellites with low SNR and are configured to use target designations from the wideband PLLs in guiding status and a prediction of frequency change caused by satellite movement. The adaptive receiver also includes channels with open PLLs in a standby mode.Type: GrantFiled: November 28, 2007Date of Patent: February 24, 2009Assignee: Topcon GPS, LLCInventors: Mark I. Zhodzishsky, Victor A. Veitsel, Oleg Potekhin, Sergey Yudanov
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Patent number: 7222035Abstract: A method and apparatus for estimating the changing frequency of a signal received by a satellite receiver from, illustratively, positioning system satellites is disclosed that enables a more accurate measurement of the change in frequency of that signal due to movement of the satellite receiver relative to those satellites. The system includes a PLL having a numerically controlled oscillator (NCO) and a filter of frequency estimates (FFE). In operation, an analog signal is received at the satellite receiver and the PLL tracks the changing signal frequency and outputs non-smoothed frequency estimates into the FFE. The FFE then smoothes noise in the signal to produce a more accurate smoothed frequency estimate of the input signal. Comparing multiple estimates over time allows Doppler shift of the signal frequency received by the satellite receiver to be calculated more precisely, thus resulting in more accurate satellite receiver velocity vector determinations and, hence, position measurements.Type: GrantFiled: November 17, 2004Date of Patent: May 22, 2007Assignee: Topcon GPS, LLCInventors: Mark I. Zhodzishsky, Sergey Yudanov, Victor A. Prasolov, Victor A. Veitsel