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公开(公告)号：US11287534B1
公开(公告)日：2022-03-29
申请号：US16838428
申请日：2020-04-02
摘要： Apparatus and methods determine the rotational position of a spinning object. A satellite positioning system can be used to determine the spatial position of an object, which in turn can be used to guide the object. However, when the object is spinning, such as an artillery shell, then the rotational orientation should be known in order to properly actuate the control surfaces, such as fins, which will also be spinning.
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公开(公告)号：US20220074967A1
公开(公告)日：2022-03-10
申请号：US17465211
申请日：2021-09-02
申请人： DENSO CORPORATION
发明人： Suguru HOCHI , Katsuhiko MUTO , Yuya HIGUCHI
摘要： In an apparatus for calibrating an inertial sensor configured to detect an angular velocity of a vehicle, an angular velocity estimator is configured to estimate a value for an angular velocity of the vehicle based on a value for an attitude of the vehicle and a value for a change in attitude of the vehicle estimated by the attitude estimator, and an error estimator is configured to estimate a value for an angular velocity error that is an error between the value for the angular velocity of the vehicle estimated by the angular velocity estimator and the value for the angular velocity of the vehicle detected by the inertial sensor. A calibrator is configured to calibrate the value for the angular velocity of the vehicle detected by the inertial sensor based on the value for the angular velocity error estimated by the error estimator.
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公开(公告)号：US20210383703A1
公开(公告)日：2021-12-09
申请号：US16983881
申请日：2020-08-03
摘要： Methods and systems are provided for guiding or otherwise assisting operation of an aircraft en route to an airport. One method involves identifying a reference point in advance of a runway, dynamically determining a gliding vertical trajectory for the aircraft en route to the reference point based at least in part on a current altitude of the aircraft at a current aircraft location and gliding characteristics of the aircraft, and providing a graphical indication of a difference between a predicted altitude of the aircraft at a location corresponding to the reference point resulting from the gliding vertical trajectory and an altitude criterion associated with the reference point. The graphical indication of the difference dynamically updates as the aircraft travels.
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公开(公告)号：US11169280B2
公开(公告)日：2021-11-09
申请号：US16578933
申请日：2019-09-23
申请人： Pointr Limited
发明人： Ismail Ege Akpinar , Can Tunca , Mehmet Can Akpinar , Sinan Isik
摘要： Direction estimation in indoor and outdoor locations. At least some of the example embodiments are computer-implemented methods including: determining, by a processor of a mobile device, that the mobile device is approaching a portal between a first navigation domain and a second navigation domain; displaying, on a display device of the mobile device, a merged map concatenating a map of the first navigation domain with a map of the second navigation domain; showing location of the mobile device on the map of the first navigation domain prior to the mobile device transiting through the portal; and then showing location of the mobile device on the map of the second navigation domain.
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公开(公告)号：US20210311157A1
公开(公告)日：2021-10-07
申请号：US17250631
申请日：2019-08-16
发明人： TOMOYUKI TAKAHASHI
摘要： A measuring circuit is provided including a reception strength acquisition unit (114) that acquires reception strengths of received signals received from respective transmitting stations by an antenna (102) having a predetermined directivity; a direction component information acquisition unit (112) that acquires azimuth angle information and elevation angle information, obtained from each of the received signals with respect to a position of the antenna (102) used as a reference, of the each of the transmitting stations; a pattern generation unit (120) that maps a three-dimensional vector of the azimuth angle information, the elevation angle information, and the reception strength of each of the received signals to a virtual three-dimensional space with the antenna (102) being an origin to generate a first reception strength pattern; and a comparison unit (128) that compares the generated first reception strength pattern with a second reception strength pattern that is a known reception strength pattern to acquire an inclination of the antenna (102).
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公开(公告)号：US10991241B2
公开(公告)日：2021-04-27
申请号：US15653335
申请日：2017-07-18
IPC分类号： G06G7/70 , G08G1/01 , G01C21/30 , G01C21/28 , G01C21/26 , G01C15/00 , G06T7/12 , G06F16/29 , G06F16/28 , G01S19/53 , G06F8/65 , G08G1/0962 , G01C21/36 , G08G1/052 , G08G1/0967 , G01S19/51 , G08G1/00 , G01C21/32 , G06T17/05 , G01C21/34 , G06F9/445 , G06F17/10 , G08G1/09
摘要： In one embodiment, a layer application generates navigation-related data based on observations associated with vehicles. In operation, the layer application generates an attribute based on a first observation associated with a vehicle and an observation type. The layer application then compares the attribute to an existing road database to generate a dynamic layer. Subsequently, the layer application causes the dynamic layer to be transmitted to a navigation subsystem. After receiving the dynamic layer, the navigation subsystem performs navigation operation(s) based on the road database and the dynamic layer. Because the layer application may receive and operate on real-time observations, providers of road databases may produce dynamic layers at a frequency that enables navigation applications to continually provide accurate navigation data.
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公开(公告)号：US10981502B2
公开(公告)日：2021-04-20
申请号：US16849708
申请日：2020-04-15
IPC分类号： B60Q1/00 , B60Q9/00 , G08B21/18 , G01M17/06 , G01S19/51 , B60Q1/52 , G05D1/02 , B60W40/06 , B60W40/064 , G01S19/53 , G01S19/39 , G01S19/14 , G05D1/00 , G08G1/00 , G08G1/01
摘要： A system for monitoring vehicle dynamics and detecting adverse events during operation is presented. Position sensors attached to a vehicle are configured to identify a vehicle orientation (heading) as well as the vehicle's direction of travel (trajectory). A system controller connected to these position sensors can detect the difference between these two measurements. When the difference between these two measurements exceeds a safety threshold, it can be an indication of a slip event. A slip event can be caused by compromised traction or stability and may lead to a loss of vehicle control. The system controller can be configured to monitor various vehicle dynamics to detect these slip events. The system controller may be configured to track geolocations of slip events to create a database of historical slip events for determining location-based risk factors and prevention of future events.
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公开(公告)号：US10921463B1
公开(公告)日：2021-02-16
申请号：US16892150
申请日：2020-06-03
摘要： Systems and methods are directed toward determining a vehicle orientation based on sensor information. Sensors are positioned along a vehicle body that may be evaluated to determine corresponding values between matching sensor types. When a threshold of sensors having corresponding values is met, the information from those sensors is combined with additional sensor information to determine a vehicle orientation. As a result, faulty sensor information may be disregarded without eliminating information from operational sensors.
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公开(公告)号：US10819938B2
公开(公告)日：2020-10-27
申请号：US16541493
申请日：2019-08-15
申请人： Trimble Inc.
发明人： Darrin Hurd , Farshad Nourozi
IPC分类号： H04N5/445 , G01S19/45 , G01S19/14 , G06T19/00 , G06T7/70 , H04N5/232 , G06T19/20 , G06T7/32 , G01S19/53 , G06F3/01
摘要： A method for displaying images using an AR device. GNSS position data is received based on wireless signals received from a GNSS satellite. Based on the GNSS position data, a first GNSS point within a geospatial frame is determined within a first time range and a second GNSS point within the geospatial frame is determined within a second time range. Based on camera POS data, a first AR point within an AR frame is determined within the first time range and a second AR point within the AR frame is determined within the second time range. One of the frames is shifted such that the second GNSS point is aligned with the second AR point. An angle formed by the GNSS points and the AR points is calculated. One of the frames is rotated by the angle.
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公开(公告)号：US10768309B1
公开(公告)日：2020-09-08
申请号：US16030321
申请日：2018-07-09
发明人： Steven B. Alexander
摘要： Disclosed is a technique to estimate at least a portion of an attitude, such as an azimuth angle from true North, based on beam angles from a controlled reception pattern antenna (CRPA) to space vehicle locations. Other attitude information such as roll and/or pitch can also be estimated. The at least portion of the attitude can be provided with or without an additional sensor, such as a compass or magnetometer, an inertial measurement unit (IMU), or the like. An attitude estimate can be useful because oftentimes the attitude of an object can vary from its track or velocity direction.
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