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公开(公告)号：US12061270B2
公开(公告)日：2024-08-13
申请号：US16757524
申请日：2019-11-07
CPC分类号： G01S19/215 , G01S19/36 , G01S19/43
摘要： An apparatus for detecting global navigation satellite system (GNSS) spoofing, including a GNSS receiver that includes a first radio-frequency front-end (RF1) connected to antenna 1; a second radio-frequency front-end (RF2) connected to antenna 2; a digital section connected to both RF1 and RF2 and controlled with a single frequency oscillator. The digital section generates a first set of GNSS raw measurements based on signals received from antenna 1; generates a second set of GNSS raw measurements based on signals received from antenna 2; computes single differences between simultaneous raw measurements, generated with the signals received from the antenna 1 and the antenna 2 for the same GNSS satellite; compares the single differences with a threshold; and issues a spoofing alert when more than one of the single differences is below a threshold.
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公开(公告)号：US11987949B2
公开(公告)日：2024-05-21
申请号：US16113060
申请日：2018-08-27
发明人： Vernon Joseph Brabec
摘要： A method for machine operator command attenuation includes the step of detecting a position of a boom, stick, and bucket of a hydraulic implement of a construction machine. Movement of the stick is detected by a controller. The controller determines if the movement of the stick will cause excavation below a desired grade. If the movement will not cause excavation below a desired grade, the controller will take no action. If the movement will cause excavation below a desired grade, the controller will command the boom to raise.
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公开(公告)号：US11905675B2
公开(公告)日：2024-02-20
申请号：US16532331
申请日：2019-08-05
发明人： Donna Kelley , Aleksandr Aleksandrovich Pimenov , Alexey Vedernikov , Ivan Bogdanyuk , Mikhail Nikolaevich Smirnov
CPC分类号： E02F3/847 , E02F9/264 , G01B9/02 , G01C15/006
摘要： A vision-based sensor system is provided for heavy equipment or other machinery that determines the pose or position of the blade with respect to the heavy equipment vehicle where the sensor system comprises a vision-based blade position system having an image acquisition device and vision system processor.
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公开(公告)号：USRE49822E1
公开(公告)日：2024-01-30
申请号：US17365977
申请日：2021-07-01
CPC分类号： H01Q9/0428 , H01Q5/385 , H01Q9/0407 , H01Q9/0414 , H01Q9/0442
摘要： A right-hand circularly-polarized patch antenna comprising a ground plane and a patch connected to each other with one or more wires for which the wire shape and location of the end points are selected such that they do not cause an antenna mismatch, and the electrical current carried in the wires produces an extra electromagnetic field subtracted from the patch field in the nadir direction.
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公开(公告)号：US11886200B2
公开(公告)日：2024-01-30
申请号：US17284506
申请日：2020-08-19
CPC分类号： G05D1/0257 , G05D1/0088 , G05D1/0094 , G05D1/0212
摘要： System for monitoring stability of autonomous robot, including a GNSS navigation receiver including antenna, analog front end, plurality of channels, inertial measurement unit (IMU) and a processor, all generating navigation and orientation data for the robot; based on the navigation and orientation data, calculating position and direction of movement for the robot; calculating spatial and orientation coordinates z1, z2 of the robot, relating to the position and direction of movement; continuing with programmed path for the robot for any spatial and orientation coordinates z1, z2 within an attraction domain, where a measure V(z) of distance from zero in z1, z2 plane are defined by Lurie-Postnikov functions and is less than 1; for spatial and orientation coordinates outside the attraction domain with V(z)>1, terminating the programmed path and generating notification.
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公开(公告)号：US11834813B2
公开(公告)日：2023-12-05
申请号：US17305596
申请日：2021-07-09
发明人： Shahab Kalantar
摘要： Systems and methods for determining a swing angle of a swing boom of a vehicle are provided. Sensor data is received from sensors disposed on a swing boom and a body of a vehicle. It is determined whether the swing boom is static or moving relative to the body based on the sensor data. In response to determining that the swing boom is static, the received sensor data is corrected based on an observed swing angle and an estimated swing angle is calculated based on the corrected sensor data. In response to determining that the swing boom is moving, the estimated swing angle is calculated based on the received sensor data. The estimated swing angle is output.
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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
CPC分类号： G01S19/30 , G01S19/243 , G01S19/37 , H04B1/709
摘要： 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：US20230305168A1
公开(公告)日：2023-09-28
申请号：US17753821
申请日：2021-08-31
发明人： Dmitry Anatolyevich RUBTSOV , Leonid Victorovich PURTO , Andrey Vladimirovich VEITSEL , Victor Andreevich PRASOLOV
摘要： 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.
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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
摘要： 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：US11592293B2
公开(公告)日：2023-02-28
申请号：US16710090
申请日：2019-12-11
IPC分类号： G01C3/08 , G01B11/00 , G01S5/16 , G01S17/08 , G01B7/14 , G01B7/004 , G01S3/78 , G01S3/789 , G01C15/00
摘要： A laser measuring system including first and second laser base stations and a laser receiver is provided. The laser receiver detects a first laser signal from the first laser base station. Location information associated with the first laser base station is extracted from the detected first laser signal. The laser receiver detects a second laser signal from the second laser base station. Location information associated with the second laser base station is extracted from the detected second laser signal. A position of the laser receiver is determined based on the extracted location information associated with the first laser base station and the extracted location information associated with the second laser base station.
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