Abstract: Some embodiments of the invention pertain to generating (s10) and providing (s20) ionospheric disturbance information from navigation satellite system (NSS) reference stations or reference station system to NSS receivers or NSS receiver systems. Station-specific and/or satellite-specific ionospheric disturbance information may be obtained (s40) on the receiver side for mitigation purposes (s60, s70, s80) in the context of estimating parameters useful to determine a position. The ionospheric disturbance information may for example comprise ionospheric amplitude scintillation information, ionospheric phase scintillation information, and/or ionospheric delay gradient information. Systems, vehicles, and computer programs are also disclosed.

Abstract: Some embodiments of the invention pertain to generating (s10) and providing (s20) ionospheric disturbance information from navigation satellite system (NSS) reference stations or reference station system to NSS receivers or NSS receiver systems. Station-specific and/or satellite-specific ionospheric disturbance information may be obtained (s40) on the receiver side for mitigation purposes (s60, s70, s80) in the context of estimating parameters useful to determine a position. The ionospheric disturbance information may for example comprise ionospheric amplitude scintillation information, ionospheric phase scintillation information, and/or ionospheric delay gradient information. Systems, vehicles, and computer programs are also disclosed.

Abstract: Two-dimensional targets, such as AprilTags, are used as control points. AprilTags can be used as cost effective alternatives to traditional prism targets without losing accuracy. AprilTags can be placed precisely around a construction site as “permanent” survey control points, like positioning reflector targets. A robotic total station, equipped with a camera sensor, can image the two-dimensional targets to efficiently resection itself.

Abstract: An augmented-reality device is used with a surveying system to guide a base station, such as a total station, during relock after loss of line of sight with a surveying instrument, such as a surveying pole with a reflective prism. A position of the surveying instrument in relation to the augmented-reality device is calculated while an object in the environment blocks line of sight from the base station to the surveying instrument. A position of the surveying instrument in relation to the environment is calculated based on the position of the surveying instrument in relation to the augmented-reality device. The position of the surveying instrument in relation to the environment is used by the base station to point toward to the surveying instrument.

Abstract: Described herein is a visual indication system implemented on a mobile machine. The visual indication system at least partially surrounds the mobile machine and includes a plurality of displayable regions. Objects surrounding the mobile machine are detected using an object detection sensor. A direction with respect to the mobile machine is detected for each of the objects. A current state of the mobile machine is determined. An object-directed indicator for each of the objects is generated based on the current state of the mobile machine. The object-directed indicator for each of the objects is displayed on the visual indication system at a particular displayable region based on the direction of the particular object.

Abstract: A modeling system accesses a mesh model generated via a light detection and ranging (LiDAR) scan of an environment comprising a room, the mesh model including anchors corresponding to walls, a floor, and a ceiling of the room. The modeling system generates, based on the anchors in the mesh model, alternate walls for a modified mesh model, the alternate walls corresponding to mesh facets of the mesh model. The modeling system modifies a configuration of the mesh facets of the alternate walls to generate the modified mesh model. The modeling system renders a three-dimensional (3D) model of the environment from the modified mesh model.

Abstract: Some embodiments of the invention relate to methods carried out by an NSS receiver and/or a processing entity capable of receiving data therefrom, for estimating parameters derived from NSS signals and detecting outliers in NSS observables. Input data comprising signals observed by the receiver is received. An estimator is operated, which uses state variables and computes the values thereof based on the input data. An outlier detection procedure comprises: computing a first statistic based on data outputted from the estimator and associated with a set of observables; identifying an observable candidate for removal; computing a second statistic based on the data outputted from the estimator from which the data associated with the identified observable is removed; and determining whether the ratio of the first to the second statistic exceeds a threshold and, if so, removing the identified observable, having the estimator recompute its state variables and performing the outlier detection procedure again.

Abstract: A navigation system includes an IMU, a navigation estimator configured to estimate a current navigation solution based on (i) a last navigation solution, and (ii) a specific force vector and an angular rate vector measured by the IMU, an RI sensor, an RI data preprocessor configured to: perform a priori transformations of last RI data and current RI data to obtain transformed last RI data and transformed current RI data based on the last navigation solution and the current navigation solution, respectively, an RI filter manager (RFM) configured to construct a delta pose registration cost gradient (DPRCG) measurement based on (i) the transformed last RI data, (ii) the transformed current RI data, (iii) the current navigation solution, and (iv) the last navigation solution. The navigation estimator is further configured to determine an absolute navigation solution based on at least (i) the current navigation solution, and (ii) the DPRCG measurement.

Abstract: A total station includes a telescope, an EDM unit, and an onboard computer. The telescope is manually adjusted by a user to cause a target to be set at last partially within an FOV of the EDM unit. After the manual adjustment, an optical aiming point associated with the telescope is misaligned from a center point of the target by an offset angle. A user input indicating that the manual adjustment has been performed is received via a user interface. In response to the user input, a slope distance is measured using the EDM unit and an angle associated with the optical aiming point is measured. The offset angle is computed based on the slope distance, and an angle associated with the center point of the target is computed based on the angle associated with the optical aiming point and the offset angle.

Abstract: A scanning surveying system comprises a base 5, an alidade 3 mounted on the base, a first motor 6 to rotate the alidade about a first axis 9, a rotating mirror 21 rotatable about a second axis 16, a second motor 23 to rotate the mirror. An optical distance measuring unit 11 is configured to direct measuring light onto the rotating mirror such that it is reflected towards objects and to receive measuring light back from these objects via the rotating mirror. The system further comprises a camera 81 and a controller for controlling the first motor based on the images recorded by the camera such that the measuring light is reflected from the rotating mirror in a direction corresponding to a selected location within the image.

Abstract: A sampling device receives, from each a plurality of transducer computing devices, respective vibration input samples. The sampling device generates a loop buffer corresponding to a most recent threshold number of samples received from each of the plurality of transducer computing devices including first and second transducer devices each located within a predefined proximity to first and second flow tubes of an equipment. The sampling device accesses, from the loop buffer, a most recent first sample logged by the first transducer computing device. The sampling device assigns, using a trained model, the first input sample to a first category of a set of categories. The sampling device accesses, from the loop buffer subsequent to accessing the first sample, a most recent second sample logged by a second transducer computing device and, using the model, assigns the second input sample to a second category of the set of categories.

Abstract: Electronic distance meter comprising a laser (4) emitting a laser pulse toward a target (12), a photodetector (6) adapted for receiving a laser pulse reflected by the target (12) and for outputting a corresponding return pulse signal, and a comparison circuit (8) receiving said return pulse signal and comprising a passive signal processing circuit (20) and a comparator (22) provided with a first input and a second input and arranged to output a first fixed value signal when the signal at the first input exceeds the signal at the second input and else to output a second fixed value signal, said comparison circuit (8) being arranged for determining a return pulse time signal based on the output of said comparator (22), said electronic distance meter being arranged for determining a target distance based on said return pulse time signal, wherein said passive signal processing circuit (20) comprises a first branch receiving said return pulse signal and comprising a transmission line (34) for generating a first tw

Abstract: A sampling device receives, from a transducer computing device located within a predefined proximity to an equipment in an operating environment, a vibration sample from the operating environment. The sampling device predicts, using a model, (1) an anomalous designation or a non-anomalous designation for the vibration sample and (2) a cluster assignment, to a particular cluster of a set of clusters, for the vibration sample when the model predicts the non-anomalous designation for the vibration sample. The sampling device transmits, to a computing device of the equipment, instructions to cease to perform the operation responsive to predicting the anomalous designation.

Abstract: A parasitically-coupled dual-band patch antenna is described. The antenna includes an inner conductor having one or more feed holes. The antenna also includes an outer conductor surrounding the inner conductor in a radial direction. The antenna further includes one or more feeds each having a vertical portion that passes through the feed holes and a horizontal portion that extends in an outward direction from the feed holes toward the outer conductor. The feeds are conductively connected to the outer conductor. The horizontal portion of each of the feeds is separated from and is conductively disconnected from a top surface of the inner conductor.

Abstract: Described herein is a visual indication system implemented on a mobile machine. The visual indication system at least partially surrounds the mobile machine and includes a plurality of displayable regions. Objects surrounding the mobile machine are detected using an object detection sensor. A direction with respect to the mobile machine is detected for each of the objects. A current state of the mobile machine is determined. An object-directed indicator for each of the objects is generated based on the current state of the mobile machine. The object-directed indicator for each of the objects is displayed on the visual indication system at a particular displayable region based on the direction of the particular object.

Abstract: Systems and methods of video data extraction and processing from vehicles are described. The video data is captured using a video capture device at a vehicle. Sensor data is captured using one or more vehicle sensors at the vehicle. A data message is sent from the vehicle to a vehicle management server, the data message allowing the vehicle management server to access the video data and the sensor data. One or more model outputs are generated by providing the video data to one or more machine-learning models at the vehicle management server. An event record associated with an event is constructed based on the one or more model outputs using a vehicle rules engine. A vehicle management message is generated based on the event record and is sent to the vehicle.

Abstract: Sets of digital samples associated with received wireless signals are received, each of the sets of digital samples corresponding to a particular RF path. The sets of digital samples are provided to a plurality of pipelines, each of the plurality of pipelines including a plurality of stages, each of the plurality of stages including one or more digital logic circuits. Sets of interconnect data are generated by the plurality of pipelines based on the sets of digital samples, the sets of interconnect data including at least one accumulating value. The sets of interconnect data are passed between adjacent pipelines of the plurality of pipelines along a direction. A result is generated by a last pipeline of the plurality of pipelines based on the at least one accumulating value.

Abstract: Disclosed are techniques for displaying AR elements on a display system of a construction machine. A position of the construction machine in a world reference frame is detected. An orientation of the construction machine is detected. A position of an operator of the construction machine in a machine reference frame is detected. A position of the operator in the world reference frame is determined based on the position of the operator in the machine reference frame, the position of the construction machine in the world reference frame, and the orientation of the construction machine. The AR elements are generated based on the position of the operator in the world reference frame and a position of the display system in the world reference frame. The AR elements are then displayed on the display system.

Abstract: A device for determining coordinates of a location can include two GNSS receiver antennas positioned in fixed relation to each other and separated by a short baseline. Signals received from the two receiver antennas can be processed to estimate a degree to a multipath effect may be impairing reliability of observables extracted from the received signals. Where both antennas observe signals at the same carrier frequency from the same satellite, each antenna can determine a carrier phase, and a single-difference carrier phase (SDCP) can be computed and used to estimate multipath effects. Where both antennas observe signals at two (or more) carrier frequencies from the same satellite, a “geometry-free” SDCP can be computed and used to estimate multipath effects. Observations of different satellites can be weighted based on the estimated multipath effects.

Abstract: A receiver system for determining coordinates of a location can include two GNSS receiver antennas positioned in fixed relation to each other and separated by a short baseline. Signals received from the two receiver antennas can be processed to define a “virtual” antenna located at the midpoint between the two receiver antennas. For instance, a location can be determined for each receiver antenna using GNSS-based techniques, and the locations of the two antennas can be used to determine a location of the virtual antenna. As another example, GNSS observables from the two antennas can be combined to provide a set of “virtual” observables for the virtual antenna, and GNSS-based techniques can be applied to the virtual observables to determine a location of the virtual antenna.