Abstract: Techniques for occluding displayable content on a portable electronic device. An EDM device of the portable electronic device may capture a world distance map comprising a plurality of distances to a plurality of points. A camera of the portable electronic device may capture a camera image containing the plurality of points. A geospatial position of a GNSS receiver may be detected. A geospatial position of the camera may be calculated based on the geospatial position of the GNSS receiver. An angle sensor may detect an orientation of the camera. A model image may be generated based on a 3D model, the orientation of the camera, and the geospatial position of the camera. The model image and/or the camera image may be occluded based on the world distance map and the 3D model. A superimposed image comprising the camera image and the model image may be generated and displayed.

Abstract: A method of maintaining vehicle formation includes receiving a desired formation distance between a lead vehicle and a follower vehicle; receiving a pre-planned path for the follower vehicle; and defining a dynamic zone around a current position of the lead vehicle. The dynamic zone has a boundary characterized by a first radius from the current position of the lead vehicle. The first radius can be substantially equal to the desired formation distance. The method further includes determining a next speed of the follower vehicle based on a current position of the follower vehicle with respect to the boundary of the dynamic zone; determining a commanded curvature of the follower vehicle based on the current position of the follower vehicle with respect to the pre-planned path; and outputting the next speed and the commanded curvature to a control system of the follower vehicle for navigation of the follower vehicle.

Abstract: Some embodiments of the invention relate to generating correction information based on global or regional navigation satellite system (NSS) multiple-frequency signals observed at a network of reference stations, broadcasting the correction information, receiving the correction information at one or more monitoring stations, estimating ambiguities in the carrier phase of the NSS signals observed at the monitoring station(s) using the correction information received thereat, generating residuals, generating post-broadcast integrity information based thereon, and broadcasting the post-broadcast integrity information. Other embodiments relate to receiving and processing correction information and post-broadcast integrity information at NSS receivers or at devices which may have no NSS receiver, as well as to systems, NSS receivers, devices which may have no NSS receiver, processing centers, and computer programs.

Abstract: Methods for commissioning a construction vehicle for machine control operations are provided. A GNSS receiver configured for determining position information, tilt information, and heading information is coupled to a rigid member of the construction vehicle. The commissioning process provides parameters that can be used for tracking and controlling movement of an implement coupled to the construction vehicle during the machine control operations.

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 Global Navigation Satellite System (GNSS) receiver for processing satellite signals with integer cross ambiguity resolution. The receiver includes an antenna assembly receiving signals from a set of GNSS satellites. The receiver includes a transceiver establishing a communication link with a spaced-apart GNSS receiver and receiving data from the spaced-apart GNSS receiver to make up a base station and rover pair performing DD techniques. The receiver includes a processor and a cross ambiguity fixing module provided by the processor executing code to generate an error correction. The receiver includes an estimator provided by the processor executing code to provide a geographical position solution by DD processing the data from the space-apart GNSS receiver and the signals from the set of GNSS satellites along with the error correction, which may provide a search space with more DD ambiguities or may address quarter or half cycle bias between receiver types.

Abstract: Techniques for calculating a geospatial position of a point of interest using a portable electronic device. A camera of the portable electronic device may observe the point of interest. An EDM device of the portable electronic device may capture a distance to the point of interest. An angle sensor may detect an orientation of the EDM device. A geospatial position of a GNSS receiver of the portable electronic device may be detected. A geospatial position of the EDM device may be calculated based on the geospatial position of the GNSS receiver. The geospatial position of the point of interest may be calculated based on the geospatial position of the EDM device, the orientation of the EDM device, and the distance to the point of interest.

Abstract: A control device receives, from an engine load sensor device, a value of an engine load of an engine of an equipment operating in an operating environment. The control device compares the value of the engine load to a target engine load range defined by a minimum target engine load value and a maximum target engine load value. Responsive to determining that the value of the engine load is less than the minimum target engine load value, the control device lowers a cutting blade of the equipment to increase an engagement of the cutting blade with a surface or subsurface. Responsive to determining that the engine load is greater than the maximum target engine load value, the control device raises the cutting blade of the equipment to decrease the engagement of the cutting blade with the surface or subsurface.

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: 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: Methods and apparatus for processing of GNSS signals are presented. These include GNSS processing with obtaining GNSS data derived from signals received at a rover antenna, obtaining correction data, maintaining a time sequence of at least one rover position and at least one rover position difference with associated time tags, using the time sequence to determine at least one derived rover position by, starting from a position determined using corrections synchronous with rover data as an anchor position at a time tag, deriving a new anchor position for the time tag of the anchor position and at least one other estimated rover position at the time tag of the anchor position, and/or reporting the new anchor position and/or a new derived rover position.

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. An estimator is operated, which uses state variables and computes the values thereof based on delta observables computed for a previous epoch. Previous residuals are obtained from the estimator, each previous residual being associated with a delta observable computed for the previous epoch. The previous residuals are then adjusted using a back-residual coefficient. Delta observables for a current epoch are computed. For each of at least some of the delta observables, the delta observable computed for the current epoch is corrected using the adjusted previous residual associated with the delta observable. The estimator is then operated for the current epoch at least based on the corrected delta observables.

Abstract: Described herein are systems, methods, and other techniques for determining a material type while an implement of a construction machine is interacting with a ground surface. A vibration signal that is indicative of a movement of the implement is captured. One or more features are extracted from the vibration signal. The one or more features are provided to a machine-learning model to generate a model output. The material type of the ground surface is predicted based on the model output.

Abstract: An augmented-reality system is combined with a surveying system to make measurement and/or layout at a construction site more efficient. A reflector can be mounted to a wearable device having an augmented-reality system. A total station can be used to track a reflector, and truth can be transferred to the wearable device while an obstruction is between the total station and the reflector. Further, a target can be used to orient a local map of a wearable device to an environment based on a distance between the target and the wearable device.

Abstract: A system for tracking a position of a working edge on an implement of a construction vehicle includes a GNSS with an antenna. The GNSS unit is configured to determine a position of the antenna and a tilt and a heading of the GNSS unit. A mount is configured to couple the GNSS unit to a rigid member of the construction vehicle. The mount is configured to couple the GNSS unit to the rigid member so that the antenna is arranged in a known spatial relationship with a pivot point between the rigid member and the implement. A mobile controller is configured for wireless communications with the GNSS unit and an angle sensor that is configured to determine rotation of the implement. The mobile controller is configured to receive the position of the antenna, the tilt, and the heading from the GNSS unit, to receive the rotation of the implement from the angle sensor, and to determine coordinates of the working edge of the implement in a real world coordinate frame.

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: Systems and methods for sharing convergence data between GNSS receivers are disclosed. Convergence data received at a GNSS receiver via a communication connection may be utilized to determine a position of the GNSS receiver.

Abstract: Embodiments describe a method for positioning a hinged vehicle including a primary part and a secondary part coupled to the primary part at a project site. The method includes receiving, from an image capturing device, digital image data representing one or more features of the secondary part; performing image analysis on the digital image data to identify positions of the one or more features of the secondary part; identifying an angle of at least a portion of the secondary part; calculating a current position of the secondary part based on the angle; calculating a positional difference between a correct position at the project site for the secondary part and a current position of the secondary part at the project site; and initiating a change in a position of the primary part to compensate for the positional difference and to position the secondary part on the correct position.

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 and increments a retrain counter. In response to determining that the incremented retrain counter does not meet or exceed a retrain threshold, the sampling device predicts, using a model, an anomalous or non-anomalous designation for the vibration sample and 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 receives a subsequent vibration sample and further increments the retrain counter. In response to determining that the further incremented retrain counter exceeds a retrain threshold, the sampling device receives a subsequent set of vibration samples and retrains, using the subsequent vibration sample and the subsequent set of vibration samples, the 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 useful to determine a position, and for estimating an expected accuracy. The method comprises receiving input data comprising NSS signals observed by the NSS receiver and/or information derived from said NSS signals; operating an estimation process, hereinafter referred to as “estimator”, using state variables and computing the values of its state variables based on the received input data; obtaining a combination of residuals from the estimator, each residual being associated with at least one observed NSS signal; and estimating an expected accuracy based on the combination of residuals and/or information derived therefrom. Systems and computer programs are also disclosed. Some embodiments may for example be used for safety-critical applications such as highly automated and autonomous driving.