Patents by Inventor Andrey Vladimirovich Veitsel
Andrey Vladimirovich Veitsel 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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Publication number: 20240048416Abstract: Method of demodulation of M-CPFSK signal, includes receiving the M-CPFSK radio signal; moving it to zero frequency; sampling at no less than double a frequency of symbols; storing the samples with their amplitude and phase for at least L4 symbols; demodulating the sampled signal in three stages, wherein each stage includes iterating over symbol values within a block of symbols, of length is L1, L2 and then L3; in the first stage, N1 symbol sequences out of all possible symbol sequences are iterated over, at the second stage, N2 symbol sequences out of all possible symbol sequences are iterated over, and at the third stage, N3 symbol sequences out of all possible symbol sequences are iterated over, to obtain final symbol values; symbol values obtained at previous stage is used in a next stage to reduce a number of symbol sequences; and determining encoded bits based on final symbol values.Type: ApplicationFiled: October 2, 2023Publication date: February 8, 2024Inventors: Leonid Victorovich Purto, Sergey Sayarovich Bogoutdinov, Andrey Vladimirovich Veitsel
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Publication number: 20240045078Abstract: A method and apparatus for processing global navigation satellite signals, or radar signals, specifies an arrival time of a signal having a shape similar to a known pseudo-random noise sequence (PRN) of rectangular pulses. Two quadrature signals are generated and six correlations are calculated and multiplied by a correlation coefficient. The results of one of quadrature signals are summed and a timing error is estimated. An improved signal arrival time is generated by adding the estimated timing error to the predicted signal arrival time is generated.Type: ApplicationFiled: December 10, 2021Publication date: February 8, 2024Applicant: Topcon Positioning Systems, Inc.Inventors: Leonid Victorovich PURTO, Dmitry Anatolyevich RUBTSOV, Andrey Vladimirovich VEITSEL
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Publication number: 20230384458Abstract: An apparatus includes an antenna, RF path, Analog to Digital convertor (ADC), filter, and navigation channel for processing a received GNSS signal based on a navigation clock. A communication modem is configured to receive the signal via a first antenna, RF path, and ADC and process the received signal in order to generate a signal based on a modem clock. The communication modem is further configured to transmit the signal based on the modem clock using a R+1 antenna via a R+1 RF path and a Digital to Analog Convertor (DAC). A multichannel synchronous signal analysis system (MSSAS) receives outputs of the ADCs and processes them using a plurality of decimators and plurality data receivers. Each of the decimators is configured to process the outputs of the ADCs and output data to one of a plurality of data receivers. A CPU is configured to control all of the devices.Type: ApplicationFiled: October 11, 2021Publication date: November 30, 2023Applicant: Topcon Positioning Systems, Inc.Inventors: Sergey Sayarovich BOGOUTDINOV, Fedor Borisovich SERKIN, Andrey Vladimirovich VEITSEL, Dmitry Yuryevich GOLDBERG, Dmitry Anatolyevich RUBTSOV
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Patent number: 11804994Abstract: Method of demodulation of M-CPFSK signal, includes receiving the M-CPFSK radio signal; moving it to zero frequency; sampling at no less than double a frequency of symbols; storing the samples with their amplitude and phase for at least L4 symbols; demodulating the sampled signal in three stages, wherein each stage includes iterating over symbol values within a block of symbols, of length is L1, L2 and then L3; in the first stage, N1 symbol sequences out of all possible symbol sequences are iterated over, at the second stage, N2 symbol sequences out of all possible symbol sequences are iterated over, and at the third stage, N3 symbol sequences out of all possible symbol sequences are iterated over, to obtain final symbol values; symbol values obtained at previous stage is used in a next stage to reduce a number of symbol sequences; and determining encoded bits based on final symbol values.Type: GrantFiled: May 14, 2021Date of Patent: October 31, 2023Assignee: Topcon Positioning Systems, Inc.Inventors: Leonid Victorovich Purto, Sergey Sayarovich Bogoutdinov, Andrey Vladimirovich Veitsel
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Patent number: 11782168Abstract: A method of receiving two chip-by-chip multiplexed CSK signals (e.g., GNSS signals) and searching for a non-CSK signal with optimal performance at a given digit capacity of a sampling memory resided in parallel correlators. For CSK signals Prompt, Early and Late results for each of possible code shift are calculated as different sums of four punctured convolutions. Depending on configuration, the method allows to receive both multiplexed CSK signals with lesser quality or one of the CSK signals with better quality. The method can be implemented as an apparatus with four punctured correlators, a set of multipliers by 1 or 2N, another set of multipliers by 1 or 0, summers of four input to one result, a RAM, searchers of maximum, and conditional commutators.Type: GrantFiled: February 14, 2023Date of Patent: October 10, 2023Assignee: Topcon Positioning Systems, Inc.Inventors: Andrey Vladimirovich Veitsel, Leonid Victorovich Purto, Dmitry Anatolyevich Rubtsov
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Publication number: 20230305168Abstract: A method and apparatus for fast searching GNSS signals performed on a GNSS receiver includes the steps of receiving a signal having a known pseudo random noise code. State information of a code generator is stored when a pseudo random noise code is generated. Several NCO, including a Doppler NCO are used to search GNSS signal for several supposed Doppler’s simultaneously. A search window associated with the received signal is reviewed a first time to identify a source of the received signal. After it is determined if a source of the received signal can be identified, the state information is loaded into the code generator prior to reviewing the search window a second time etc. Search windows is shifting by all length PRN Code. The loading of state information allows sequential review of the search window without readjustment of a fast search module which speeds the process of analyzing the received signals.Type: ApplicationFiled: August 31, 2021Publication date: September 28, 2023Applicant: Topcon Positioning Systems, Inc.Inventors: Dmitry Anatolyevich RUBTSOV, Leonid Victorovich PURTO, Andrey Vladimirovich VEITSEL, Victor Andreevich PRASOLOV
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Publication number: 20230224198Abstract: Method of demodulation of M-CPFSK signal, includes receiving the M-CPFSK radio signal; moving it to zero frequency; sampling at no less than double a frequency of symbols; storing the samples with their amplitude and phase for at least L4 symbols; demodulating the sampled signal in three stages, wherein each stage includes iterating over symbol values within a block of symbols, of length is L1, L2 and then L3; in the first stage, N1 symbol sequences out of all possible symbol sequences are iterated over, at the second stage, N2 symbol sequences out of all possible symbol sequences are iterated over, and at the third stage, N3 symbol sequences out of all possible symbol sequences are iterated over, to obtain final symbol values; symbol values obtained at previous stage is used in a next stage to reduce a number of symbol sequences; and determining encoded bits based on final symbol values.Type: ApplicationFiled: May 14, 2021Publication date: July 13, 2023Inventors: Leonid Victorovich Purto, Sergey Sayarovich Bogoutdinov, Andrey Vladimirovich Veitsel
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Publication number: 20230194730Abstract: A method of receiving two chip-by-chip multiplexed CSK signals (e.g., GNSS signals) and searching for a non-CSK signal with optimal performance at a given digit capacity of a sampling memory resided in parallel correlators. For CSK signals Prompt, Early and Late results for each of possible code shift are calculated as different sums of four punctured convolutions. Depending on configuration, the method allows to receive both multiplexed CSK signals with lesser quality or one of the CSK signals with better quality. The method can be implemented as an apparatus with four punctured correlators, a set of multipliers by 1 or 2N, another set of multipliers by 1 or 0, summers of four input to one result, a RAM, searchers of maximum, and conditional commutators.Type: ApplicationFiled: February 14, 2023Publication date: June 22, 2023Inventors: ANDREY VLADIMIROVICH VEITSEL, LEONID VICTOROVICH PURTO, DMITRY ANATOLYEVICH RUBTSOV
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Patent number: 11681009Abstract: Method of reducing multipath effects on phase measurements, including receiving radio signals with different pseudo-random codes transmitted by at least four base stations, each at particular frequency received by one channel; measuring delay difference and phase difference from different pairs of base stations; calculating a current position of the receiver based on the measured phase differences and delay differences, wherein the base stations differ in pseudo-random codes at same frequencies or differ in carrier frequency or polarization type if using the same pseudo-random codes, and wherein a number of channels in the receiver exceeds a number of channels needed for the calculating of the current position; detecting anomalous jumps in phase of one or more channels, based on first or second derivative of the phase, as being indicative of multipath signal reception; removing those channels from calculation of current position; and calculating current position based on remaining channels.Type: GrantFiled: January 13, 2021Date of Patent: June 20, 2023Assignee: Topcon Positioning Systems, Inc.Inventors: Nikolay Afanasyevich Vazhenin, Fedor Borisovich Serkin, Andrey Vladimirovich Veitsel
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Publication number: 20230184873Abstract: Method of reducing multipath effects on phase measurements, including receiving radio signals with different pseudo-random codes transmitted by at least four base stations, each at particular frequency received by one channel; measuring delay difference and phase difference from different pairs of base stations; calculating a current position of the receiver based on the measured phase differences and delay differences, wherein the base stations differ in pseudo-random codes at same frequencies or differ in carrier frequency or polarization type if using the same pseudo-random codes, and wherein a number of channels in the receiver exceeds a number of channels needed for the calculating of the current position; detecting anomalous jumps in phase of one or more channels, based on first or second derivative of the phase, as being indicative of multipath signal reception; removing those channels from calculation of current position; and calculating current position based on remaining channels.Type: ApplicationFiled: January 13, 2021Publication date: June 15, 2023Inventors: Nikolay Afanasyevich Vazhenin, Fedor Borisovich Serkin, Andrey Vladimirovich Veitsel
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Patent number: 11604285Abstract: A method of receiving two chip-by-chip multiplexed CSK signals (e.g., GNSS signals) and searching for a non-CSK signal with optimal performance at a given digit capacity of a sampling memory resided in parallel correlators. For CSK signals Prompt, Early and Late results for each of possible code shift are calculated as different sums of four punctured convolutions. Depending on configuration, the method allows to receive both multiplexed CSK signals with lesser quality or one of the CSK signals with better quality. The method can be implemented as an apparatus with four punctured correlators, a set of multipliers by 1 or 2N, another set of multipliers by 1 or 0, summers of four input to one result, a RAM, searchers of maximum, and conditional commutators.Type: GrantFiled: April 22, 2020Date of Patent: March 14, 2023Assignee: Topcon Positioning Systems, Inc.Inventors: Andrey Vladimirovich Veitsel, Leonid Victorovich Purto, Dmitry Anatolyevich Rubtsov
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Patent number: 11397265Abstract: A universal multi-channel receiver for receiving and processing signals from different navigation systems is provided. The universal receiver is implemented as an ASIC receiver with a number of universal channels. The receiver with universal channels is capable of receiving and processing signals from navigation satellites located within a direct access zone. The universal receiver has a plurality of channels that share the same memory. The universal receiver can determine its coordinates using any of the existing navigation systems (GPS, GLONASS, Beidou and GALILEO). The receiver can receive and process any (PN) signals.Type: GrantFiled: November 13, 2020Date of Patent: July 26, 2022Assignee: Topcon Positioning Systems, Inc.Inventors: Andrey Vladimirovich Veitsel, Dmitry Anatolyevich Rubtsov, Igor Anatolyevich Orlovsky, Sergey Sayarovich Bogoutdinov
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Publication number: 20220146690Abstract: A method of receiving two chip-by-chip multiplexed CSK signals (e.g., GNSS signals) and searching for a non-CSK signal with optimal performance at a given digit capacity of a sampling memory resided in parallel correlators. For CSK signals Prompt, Early and Late results for each of possible code shift are calculated as different sums of four punctured convolutions. Depending on configuration, the method allows to receive both multiplexed CSK signals with lesser quality or one of the CSK signals with better quality. The method can be implemented as an apparatus with four punctured correlators, a set of multipliers by 1 or 2N, another set of multipliers by 1 or 0, summers of four input to one result, a RAM, searchers of maximum, and conditional commutators.Type: ApplicationFiled: April 22, 2020Publication date: May 12, 2022Inventors: ANDREY VLADIMIROVICH VEITSEL, LEONID VICTOROVICH PURTO, DMITRY ANATOLYEVICH RUBTSOV
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Patent number: 11287532Abstract: GNSS timing receiver with synchronization of raw GNSS measurements to an external timescale. Synchronization is achieved by using a hardware Time Interval Measurement Unit (TIMU). The TIMU measures time intervals between two pulse signals and makes additional processing of these measurements. The first pulse signal is generated inside the GNSS receiver. The second pulse signal is the external pulse signal generated by an external time reference device. This time interval is used to control the time instant when the output GNSS measurement will be taken. In the first embodiment all actual GNSS measurements are physically taken at time instants indicated by external pulse signal. These measurements are used as output GNSS measurements. In another embodiment all actual GNSS measurements are taken at their default time instants indicated by internal pulse signal. But output GNSS measurements are calculated at the time instants indicated by the external pulse signal.Type: GrantFiled: November 13, 2018Date of Patent: March 29, 2022Assignee: Topcon Positioning Systems, Inc.Inventors: Nikolay Nikolaevich Vasilyuk, Andrey Vladimirovich Veitsel, Sergey Ivanovich Tychinskiy, Alexandr Vladimirovich Doronin, Alexey Stanislavovich Lebedinsky, Konstantin Viktorovich Ebauer
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Publication number: 20210364646Abstract: GNSS timing receiver with synchronization of raw GNSS measurements to an external timescale. Synchronization is achieved by using a hardware Time Interval Measurement Unit (TIMU). The TIMU measures time intervals between two pulse signals and makes additional processing of these measurements. The first pulse signal is generated inside the GNSS receiver. The second pulse signal is the external pulse signal generated by an external time reference device. This time interval is used to control the time instant when the output GNSS measurement will be taken. In the first embodiment all actual GNSS measurements are physically taken at time instants indicated by external pulse signal. These measurements are used as output GNSS measurements. In another embodiment all actual GNSS measurements are taken at their default time instants indicated by internal pulse signal. But output GNSS measurements are calculated at the time instants indicated by the external pulse signal.Type: ApplicationFiled: November 13, 2018Publication date: November 25, 2021Inventors: NIKOLAY NIKOLAEVICH VASILYUK, ANDREY VLADIMIROVICH VEITSEL, SERGEY IVANOVICH TYCHINSKIY, ALEXANDR VLADIMIROVICH DORONIN, ALEXEY STANISLAVOVICH LEBEDINSKY, KONSTANTIN VIKTOROVICH EBAUER
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Patent number: 11125889Abstract: The present invention discloses methods of accuracy improving for code measurements in GLONASS GNSS receivers. One component of error budget in code measurements of GLONASS receivers is caused by a difference in signal delays arising in the receiver analog Front End and antenna filter on different channel frequencies specific to GLONASS satellites. Methods to compensate for differences in delays for different GLONASS channel frequencies have been proposed using data collected from a GLONASS signals simulator.Type: GrantFiled: August 30, 2019Date of Patent: September 21, 2021Assignee: Topcon Positioning Systems, Inc.Inventors: Vladimir Victorovich Veitsel, Andrey Vladimirovich Veitsel, Konstantin Vladimirovich Chereshnev
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Patent number: 11035960Abstract: Navigation receiver includes antennas receiving signals from different satellite constellations, Low Noise Amplifiers, a Block of Analog Filters, a Block of Quadrature mixers (BQM) translating in phase and quadrature signals to an intermediate frequency, analog converters digitizing the in phase and quadrature signals, a Block of Digital Quadrature Mixers (BDQM) shifting the digitized signals to zero frequency, a Set Block of Digital Filters (SBDF) band-pass filtering the shifted signals, and reducing a sampling rate, and a Block of Digital Processing (BDP) calculating coordinates, all series-connected; a Block of Digital Generators (BDG) for fine control of the BDQM; and a Block of Analog Generators (BAG) that defines which signal is processed by its corresponding BQM; SBDF including Blocks of Digital Filters (BDFs), each BDF including a chain of Blocks of MultiRate Filters for antialiasing filtering/down-sampling of shifted signals, programmable commutators for controlling decimation, and FIR-filters; eachType: GrantFiled: March 22, 2018Date of Patent: June 15, 2021Assignee: Topcon Positioning Systems, Inc.Inventors: Nikolay Afanasievich Vazhenin, Andrey Vladimirovich Veitsel, Vladimir Victorovich Veitsel, Igor Anatolievich Orlovsky, Leonid Victorovich Purto, Dmitry Anatolyevich Rubtsov, Fedor Borisovich Serkin
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Publication number: 20210157016Abstract: Navigation receiver includes antennas receiving signals from different satellite constellations, Low Noise Amplifiers, a Block of Analog Filters, a Block of Quadrature mixers (BQM) translating in phase and quadrature signals to an intermediate frequency, analog converters digitizing the in phase and quadrature signals, a Block of Digital Quadrature Mixers (BDQM) shifting the digitized signals to zero frequency, a Set Block of Digital Filters (SBDF) band-pass filtering the shifted signals, and reducing a sampling rate, and a Block of Digital Processing (BDP) calculating coordinates, all series-connected; a Block of Digital Generators (BDG) for fine control of the BDQM; and a Block of Analog Generators (BAG) that defines which signal is processed by its corresponding BQM; SBDF including Blocks of Digital Filters (BDFs), each BDF including a chain of Blocks of MultiRate Filters for antialiasing filtering/down-sampling of shifted signals, programmable commutators for controlling decimation, and FIR-filters; eachType: ApplicationFiled: March 22, 2018Publication date: May 27, 2021Inventors: NIKOLAY AFANASIEVICH VAZHENIN, ANDREY VLADIMIROVICH VEITSEL, VLADIMIR VICTOROVICH VEITSEL, IGOR ANATOLIEVICH ORLOVSKY, LEONID VICTOROVICH PURTO, DMITRY ANATOLYEVICH RUBTSOV, FEDOR BORISOVICH SERKIN
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Publication number: 20210063583Abstract: A universal multi-channel receiver for receiving and processing signals from different navigation systems is provided. The universal receiver is implemented as an ASIC receiver with a number of universal channels. The receiver with universal channels is capable of receiving and processing signals from navigation satellites located within a direct access zone. The universal receiver has a plurality of channels that share the same memory. The universal receiver can determine its coordinates using any of the existing navigation systems (GPS, GLONASS, Beidou and GALILEO). The receiver can receive and process any (PN) signals.Type: ApplicationFiled: November 13, 2020Publication date: March 4, 2021Inventors: Andrey Vladimirovich Veitsel, Dmitry Anatolyevich Rubtsov, Igor Anatolyevich Orlovsky, Sergey Sayarovich Bogoutdinov
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Patent number: 10921459Abstract: GNSS receiver includes first type correlators and a maximum selecting unit selecting an output from the first type correlators, and with a common control of all the correlators in code delay, carrier phase and carrier frequency; second type correlators with individual control in code delay of each correlator or each sub-group of second type correlators and with common control of all second type correlators in carrier phase and frequency; and a processor. The first type correlators can convolve one quadrature only, and demodulates CSK symbols, the second type correlators calculate discriminator values for CSK-modulated signal DLL, the demodulated data then is used by the processor to produce improved position and velocity.Type: GrantFiled: November 8, 2019Date of Patent: February 16, 2021Assignee: Topcon Positioning Systems, Inc.Inventors: Andrey Vladimirovich Veitsel, Leonid Victorovich Purto, Alexey Stanislavovich Lebedinsky, Dmitry Anatolievich Rubtsov