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Patent Agency Ranking
1.发明授权公开(公告)号：US09244174B2
公开(公告)日：2016-01-26
申请号：US14428431
申请日：2013-08-07
Applicant: Topcon Positioning Systems, Inc.
Inventor： Sergey Vladislavovich Averin , Roman Anatolyevich Nevzorov , Andrey Valeryevich Plenkin , Vladimir Ivanovich Zubinsky
CPC classification number: G01S19/20 , G01S19/04 , G01S19/07 , G01S19/426 , G01S19/428 , G01S19/43
Abstract: Scintillations caused by ionospheric irregularities during Global Navigation Satellite System (GNSS) measurements are detected and mitigated. Detection is based at least in part on statistical properties of geometry-free combination parameters calculated from input GNSS measurements corresponding to the same navigation satellite and different carrier frequencies. Mitigation is based at least in part on ionosphere-free combination parameters calculated from input GNSS measurements corresponding to the same navigation satellite and different carrier frequencies. Depending on the number of satellites with detected scintillations, different algorithms are used to calculate values of target parameters from a set of ionosphere-free combination parameters or from a set of ionosphere-free combination parameters and the remaining input GNSS measurements. Different algorithms accommodate stand-alone mode code phase measurements, stand-alone mode carrier phase measurements, differential navigation mode code phase measurements, and differential navigation mode carrier phase measurements.
Abstract translation: 检测并减轻全球导航卫星系统（GNSS）测量过程中电离层不规则造成的闪电。 检测至少部分地基于从对应于相同导航卫星和不同载波频率的输入GNSS测量计算的几何自由组合参数的统计特性。 减缓至少部分地基于对应于相同导航卫星和不同载波频率的输入GNSS测量计算的无电离层组合参数。 根据具有检测到的闪烁的卫星数量，使用不同的算法从一组无电离子组合参数或一组无电离子组合参数和剩余的输入GNSS测量中计算目标参数的值。 不同的算法适应独立模式码相位测量，独立模式载波相位测量，差分导航模式码相位测量和差分导航模式载波相位测量。
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公开(公告)号：US11209552B2
公开(公告)日：2021-12-28
申请号：US16332447
申请日：2019-01-11
Applicant: Topcon Positioning Systems, Inc.
Inventor： Mark Isaakovich Zhodzishsky , Viktor Abramovich Veitsel , Mikhail Arkadievich Mironov , Alexey Vasilievich Bashaev , Amir Salikhovich Bakeev , Vladimir Viktorovich Beloglazov , Sergey Vladislavovich Averin
Abstract: GNSS receiver which includes RF front end, connected to GNSS antenna, an ADC converting the satellite signals into digitized signals, a digital section, including a processor receiving the digitized signals, forming raw measurements with pseudoranges measured between the antenna and satellites, and estimating target parameters, including receiver position and receiver time offset by (i) extrapolating the target parameters from previous epoch to current epoch using a dynamic model; (ii) computing a quasi-measurement for each satellite based on extrapolated target parameters and GNSS satellite positions; (iii) detecting and rejecting raw measurements with anomalous errors by testing differences between the raw measurements and respective quasi-measurements against predefined thresholds; (iv) substituting quasi-measurements for rejected raw measurements; (v) estimating target parameters using unrejected raw measurements and substituted quasi-measurements; (vi) outputting estimated target parameters.
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公开(公告)号：US10775513B1
公开(公告)日：2020-09-15
申请号：US16088731
申请日：2018-04-18
Applicant: Topcon Positioning Systems, Inc.
Inventor： Sergey Vladislavovich Averin , Mikhail Yurievich Vorobiev , Andrey Valerievich Plenkin , Danila Svyatoslavovich Milyutin
Abstract: A high performance attitude determination system, including a global navigation satellite system (GNSS) receiver, the receiver including a first radio-frequency front-end (RF1) connected to a main antenna; a second radio-frequency front-end (RF2) connected to an auxiliary antenna; and a digital section connected to both RF1 and RF2. The digital section (i) generates a first set of GNSS raw measurements based on signals received from RF1; (ii) generates a second set of GNSS raw measurements based on signals received from RF2; (iii) computes a spatial attitude of a baseline between main and auxiliary antennas, using the first and the second sets of GNSS raw measurements, and based on carrier phase integer ambiguity resolution; (iv) continues updating the spatial attitude using the first and the second sets of GNSS raw measurements without carrier phase integer ambiguity resolution, and using fractional carrier phases. Optionally, RF1 and RF2 use a common clock.
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4.发明授权公开(公告)号：US09488729B2
公开(公告)日：2016-11-08
申请号：US14428476
申请日：2013-08-07
Applicant: Topcon Positioning Systems, Inc.
Abstract: A scintillation caused by ionospheric irregularities during Global Navigation Satellite System (GNSS) measurements is detected. A first input GNSS measurement corresponding to a navigation satellite and corresponding to a first carrier frequency and a second GNSS measurement corresponding to the navigation satellite and corresponding to a second carrier frequency, in which the second carrier frequency is different from the first carrier frequency, are received. A geometry-free combination (GFC) parameter based at least in part on the first input GNSS measurement, the second input GNSS measurement, the first carrier frequency, and the second carrier frequency is calculated. The occurrence of a scintillation caused by an ionospheric irregularity is determined based at least in part on the GFC parameter. In an embodiment of the invention, the dispersion of the GFC parameter over a specified time interval is determined. A scintillation is detected if the dispersion exceeds a specified threshold value.
Abstract translation: 检测在全球导航卫星系统（GNSS）测量过程中由电离层不规则引起的闪烁。 对应于导航卫星并对应于与导航卫星相对应的第一载波频率和对应于第二载波频率与第一载波频率不同的第二载波频率的第二GNSS测量的第一输入GNSS测量是 收到了 至少部分地基于第一输入GNSS测量，第二输入GNSS测量，第一载波频率和第二载波频率来计算几何自由组合（GFC）参数。 至少部分地基于GFC参数确定由电离层不规则引起的闪烁的发生。 在本发明的实施例中，确定GFC参数在指定时间间隔内的分散。 如果色散超过规定的阈值，则检测闪烁。
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5.发明申请公开(公告)号：US20150226855A1
公开(公告)日：2015-08-13
申请号：US14428431
申请日：2013-08-07
Applicant: TOPCON POSITIONING SYSTEMS, INC
Inventor： Sergey Vladislavovich Averin , Roman Anatolyevich Nevzorov , Andrey Valeryevich Plenkin , Vladimir Ivanovich Zubinsky
IPC: G01S19/07
CPC classification number: G01S19/20 , G01S19/04 , G01S19/07 , G01S19/426 , G01S19/428 , G01S19/43
Abstract: Scintillations caused by ionospheric irregularities during Global Navigation Satellite System (GNSS) measurements are detected and mitigated. Detection is based at least in part on statistical properties of geometry-free combination parameters calculated from input GNSS measurements corresponding to the same navigation satellite and different carrier frequencies. Mitigation is based at least in part on ionosphere-free combination parameters calculated from input GNSS measurements corresponding to the same navigation satellite and different carrier frequencies. Depending on the number of satellites with detected scintillations, different algorithms are used to calculate values of target parameters from a set of ionosphere-free combination parameters or from a set of ionosphere-free combination parameters and the remaining input GNSS measurements. Different algorithms accommodate stand-alone mode code phase measurements, stand-alone mode carrier phase measurements, differential navigation mode code phase measurements, and differential navigation mode carrier phase measurements.
Abstract translation: 检测并减轻全球导航卫星系统（GNSS）测量过程中电离层不规则造成的闪电。 检测至少部分地基于从对应于相同导航卫星和不同载波频率的输入GNSS测量计算的几何自由组合参数的统计特性。 减缓至少部分地基于对应于相同导航卫星和不同载波频率的输入GNSS测量计算的无电离层组合参数。 根据具有检测到的闪烁的卫星数量，使用不同的算法从一组无电离子组合参数或一组无电离子组合参数和剩余的输入GNSS测量中计算目标参数的值。 不同的算法适应独立模式码相位测量，独立模式载波相位测量，差分导航模式码相位测量和差分导航模式载波相位测量。
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