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公开(公告)号：US11782168B2
公开(公告)日：2023-10-10
申请号：US18109503
申请日：2023-02-14
Applicant: Topcon Positioning Systems, Inc.
CPC classification number: G01S19/30 , G01S19/243 , G01S19/37 , H04B1/709
Abstract: 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.
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公开(公告)号：US11604285B2
公开(公告)日：2023-03-14
申请号：US17282398
申请日：2020-04-22
Applicant: Topcon Positioning Systems, Inc.
Abstract: 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.
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公开(公告)号：US10809385B2
公开(公告)日：2020-10-20
申请号：US16365275
申请日：2019-03-26
Applicant: Topcon Positioning Systems, Inc.
Abstract: A method for receiving and processing satellite navigation signals includes receiving the navigation signals; converting the navigation signals into digital signals; providing a clock signal to all channels that process the digital signals; generating frequency division signals; selecting a channel frequency division signal from the frequency division signals based on which ADC is used to convert the satellite navigation signals into digital signals; connecting the channel to the ADC; generating code frequency signal and base carrier frequency signal using a net accumulation signal; processing the digital signal in the channel to produce digital quadrature signal components of the digital signal based on the code frequency signal and the base carrier frequency signal; using a tick signal that represents 2N×clock signal as a temporary time scale for control of the channels for determining digital signal phase differences between the channels; and outputting coordinates based on the quadrature components.
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公开(公告)号：US10241212B2
公开(公告)日：2019-03-26
申请号：US15101468
申请日：2016-02-19
Applicant: Topcon Positioning Systems, Inc.
Abstract: A method for receiving and processing satellite navigation signals includes receiving the navigation signals; converting the navigation signals into digital signals; providing a clock signal to all channels that process the digital signals; generating frequency division signals; selecting a channel frequency division signal from the frequency division signals based on which ADC is used to convert the satellite navigation signals into digital signals; connecting the channel to the ADC; generating code frequency signal and base carrier frequency signal using a net accumulation signal; processing the digital signal in the channel to produce digital quadrature signal components of the digital signal based on the code frequency signal and the base carrier frequency signal; using a tick signal that represents 2N×clock signal as a temporary time scale for control of the channels for determining digital signal phase differences between the channels; and outputting coordinates based on the quadrature components.
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公开(公告)号：US20180038964A1
公开(公告)日：2018-02-08
申请号：US15101468
申请日：2016-02-19
Applicant: Topcon Positioning Systems, Inc.
Abstract: A method for receiving and processing satellite navigation signals includes receiving the navigation signals; converting the navigation signals into digital signals; providing a clock signal to all channels that process the digital signals; generating frequency division signals; selecting a channel frequency division signal from the frequency division signals based on which ADC is used to convert the satellite navigation signals into digital signals; connecting the channel to the ADC; generating code frequency signal and base carrier frequency signal using a net accumulation signal; processing the digital signal in the channel to produce digital quadrature signal components of the digital signal based on the code frequency signal and the base carrier frequency signal; using a tick signal that represents 2N×clock signal as a temporary time scale for control of the channels for determining digital signal phase differences between the channels; and outputting coordinates based on the quadrature components.
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Patent Agency Ranking
公开(公告)号：US20210063583A1
公开(公告)日：2021-03-04
申请号：US17098224
申请日：2020-11-13
Applicant: Topcon Positioning Systems, Inc.
Inventor： Andrey Vladimirovich Veitsel , Dmitry Anatolyevich Rubtsov , Igor Anatolyevich Orlovsky , Sergey Sayarovich Bogoutdinov
Abstract: 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.
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公开(公告)号：US20190041530A1
公开(公告)日：2019-02-07
申请号：US16143629
申请日：2018-09-27
Applicant: Topcon Positioning Systems, Inc.
Inventor： Andrey Vladimirovich Veitsel , Dmitry Anatolyevich Rubtsov , Igor Anatolyevich Orlovsky , Sergey Sayarovich Bogoutdinov
IPC: G01S19/33
Abstract: 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.
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公开(公告)号：US11942948B2
公开(公告)日：2024-03-26
申请号：US17758697
申请日：2021-10-08
Applicant: TOPCON POSITIONING SYSTEMS, INC.
CPC classification number: H03K3/84 , G01S1/0428 , G01S7/023 , G01S19/03 , G01S19/235 , H04B1/713 , H04B15/00 , H04L27/02
Abstract: An apparatus for forming wideband pseudo random noise signals includes a set of channels each comprising an NCO having a controlled frequency and phase and a PRN code generator, the NCO generating a strobe that is output to the PRN code generator. The PRN code generator forms a new sequence element of +1 or −1 in response to the strobe. The apparatus also comprises a first modulator having a plurality of weight coefficients, a plurality of multipliers each multiplying one of the weight coefficients, an adder outputting a sum of the plurality of multipliers output signals, and a mixer with a quadrature output signal multiplying the adder's output by sine and cosine of a low intermediate frequency. The apparatus also includes a processor controlling the set of channels, a transceiver module to receive and/or transmit quadrature signals, and an interface connecting the output of the mixer and the transceiver module.
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公开(公告)号：US11035960B1
公开(公告)日：2021-06-15
申请号：US16088957
申请日：2018-03-22
Applicant: Topcon Positioning Systems, Inc.
Inventor： Nikolay Afanasievich Vazhenin , Andrey Vladimirovich Veitsel , Vladimir Victorovich Veitsel , Igor Anatolievich Orlovsky , Leonid Victorovich Purto , Dmitry Anatolyevich Rubtsov , Fedor Borisovich Serkin
Abstract: 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; each BDF controlled by control block.
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公开(公告)号：US20190219708A1
公开(公告)日：2019-07-18
申请号：US16365275
申请日：2019-03-26
Applicant: Topcon Positioning Systems, Inc.
IPC: G01S19/33
Abstract: A method for receiving and processing satellite navigation signals includes receiving the navigation signals; converting the navigation signals into digital signals; providing a clock signal to all channels that process the digital signals; generating frequency division signals; selecting a channel frequency division signal from the frequency division signals based on which ADC is used to convert the satellite navigation signals into digital signals; connecting the channel to the ADC; generating code frequency signal and base carrier frequency signal using a net accumulation signal; processing the digital signal in the channel to produce digital quadrature signal components of the digital signal based on the code frequency signal and the base carrier frequency signal; using a tick signal that represents 2N×clock signal as a temporary time scale for control of the channels for determining digital signal phase differences between the channels; and outputting coordinates based on the quadrature components.
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