Abstract: A method and system obtains precise survey-grade position data of target points in zones where precise GPS data cannot be obtained, due to natural or man-made objects such as foliage and buildings. The system comprises position measurement components such as a GPS receiver, together with an inertial measurement unit (IMU) and an electronic distance meter (EDM) or an image capture device all mounted on a survey pole. The system and method obtains GPS data when outside the zone and uses the other position measurement systems, such as the IMU, inside the zone to traverse to a target point. The EDM or the image capture device may be used within or without the zone to obtain data to reduce accumulated position errors.

Abstract: A method of stationing an unleveled optical total station includes placing the unleveled optical total station at a first station. At the first station, positions of at least three non-collinear measurement points in an instrument coordinate system are determined using the unleveled optical total station. The method also includes obtaining positions of the at least three non-collinear measurement points in a local coordinate system. A transformation is computed between the instrument coordinate system and the local coordinate system using the positions of the at least three non-collinear measurement points in the instrument coordinate system and the positions of the at least three non-collinear measurement points in the local coordinate system.

Abstract: Inertial navigation systems for wheeled vehicles with constrained motion degrees of freedom are described.

Abstract: This disclosure concerns novel tools and techniques for distributing status information, including without limitation status information about commercial equipment. In some cases, a status monitoring device can be attached to, incorporated within, or otherwise placed in communication with a piece of commercial equipment. The status monitoring device can monitor the status of the equipment and communicate that status. Some of the discloses tools and techniques employ a social networking infrastructure to convey information (such as status information about a piece of equipment).

Abstract: A system for use with an excavator of the type having a chassis, bucket support elements including a boom extending from the chassis and a dipper stick pivotally mounted on the end of the boom, and an excavator bucket pivotally mounted on the end of the dipper stick, determines the position of the excavator bucket during operation of the excavator at a worksite. The system includes a plurality of fixed ranging radios that are positioned at known locations at the worksite. A pair of ranging radios is mounted on the chassis of the excavator. A third ranging radio is mounted on one of the bucket support elements. A measurement circuit is responsive to the pair of ranging radios and to the third ranging radio, and determines the position and orientation of the excavator chassis, the bucket support elements, and the bucket with respect to the plurality of fixed ranging radios.

Abstract: System and method for configuring guidance controllers. In one embodiment, a method includes detecting an implement, by a guidance controller, coupled to a machine. The method may further include determining a characteristic of the implement which affects a calibration parameter of the guidance controller and configuring the calibration parameter of the guidance controller based, at least in part, on the characteristic of the implement. An operational path of the machine may be controlled based on the calibration parameter.

Abstract: Methods and apparatus are presented for determining a position of an antenna of a GNSS rover from observations of GNSS signals collected at the antenna over multiple epochs and from correction data for at least one of the epochs. A first-epoch rover position relative to a moving base location is determined, a second-epoch update of the first-epoch rover position relative to the moving base location for a second epoch is determined using a single-differenced delta phase process, and the first-epoch position and the second-epoch update are combined to obtain a second-epoch rover position relative to a moving base location of the second epoch.

Abstract: Control systems and methods that provide a high degree of vertical measurement accuracy for a body in motion are disclosed. The systems employ an inertial sensor system for vertical measurement and a Global Navigation Satellite System that includes multipath reduction or attenuation to provide corrected vertical information for a moving body to the inertial sensor system. The combination of these systems enables the maintenance of an accurate vertical position for said body.

Abstract: A method of determining a gauge and a tilt of a rail track at a location includes providing a rail trolley including a processor, a memory coupled to the processor, an RFID reader, a gauge sensor, and a tilt sensor and positioning the rail trolley on the rail track at the location. The method also includes interrogating one or more RFID tags positioned along the rail track and determining, using the processor, a fixed location associated with each of the one or more RFID tags. The method further includes determining, using the processor, the location of the rail trolley in relation to the fixed locations associated with each of the one or more RFID tags and determining the gauge and tilt of the rail track at the location of the rail trolley.

Abstract: A system for calculating a first mass value indicative of a first mass of a vehicle is provided, wherein the vehicle has a vehicle interface capable of providing fuel data indicative of a rate at which fuel is being consumed by an engine of the vehicle at each point in time. The system includes: an interface coupled with the vehicle interface, the interface configured for: receiving the fuel data; and receiving movement data indicative of a movement of the vehicle at the each point in time; and a data processing system configured for: deriving a plurality of mass values from the fuel data and the movement data, each mass value corresponding to a respective point in time; and calculating, using the plurality of mass values, the first mass value indicative of the first mass of the vehicle.

Abstract: A method and system for integration of real-time field data in chemical delivery vehicle operations is disclosed. Initially, information for a plurality of regions designated for chemical delivery is received at a command center, each of the plurality of regions having a defined boundary. Real-time and forecast environmental conditions are utilized in conjunction with prior and real-time field data to rank each of the plurality of regions. One or more chemical delivery vehicles are automatically selected and dispatched to one or more of the plurality of regions. When the one or more chemical delivery vehicles are within the defined boundary of one of the plurality of regions for chemical delivery, region specific chemical delivery procedures incorporating real-time environmental conditions are automatically calculated and initiated.

Abstract: A computer-implemented imaging process method includes generating a progression of images of a three-dimensional model and saving the images at a determined location, generating mark-up code for displaying image manipulation controls and for permitting display of the progression of images in response to user interaction with the image manipulation controls, and providing the images and mark-up code for use by a third-party application.

Abstract: Some embodiments of the present invention derive an ionospheric phase bias and an ionospheric differential code bias (DCB) using an absolute ionosphere model, which can be estimated from data obtained from a network of reference stations or obtained from an external source such as WAAS, GAIM, IONEX or other. Fully synthetic reference station data is generated using the ionospheric phase bias and/or the differential code bias together with the phase leveled clock and ionospheric-free code bias and/or MW bias.

Abstract: A method of determining an azimuth and elevation of a point in an image is provided. The method comprises positioning an imaging device at a first position and acquiring a first image. The method also comprises rotating the imaging device and acquiring a second image at the first position. The first image includes the point, and a portion of the first image overlaps a portion of the second image. The method also includes determining correspondences between features in overlapping portions of the images, determining a first transformation between coordinates of the first image and coordinates of the second image based on the correspondences, and determining a second transformation between the coordinates of the second image and a local coordinate frame. The method also includes computing the azimuth and elevation of the point based on the first transformation and the second transformation.

Abstract: A laser light receiver used to detect pulsed laser light that is produced by a rotating laser light source on a construction jobsite is disclosed. In this manner, the laser receiver acts as an elevation detector and provides an equipment operator, or a construction worker, with the current elevation status with respect to the plane of laser light. The laser receiver is a unitary device that can detect multiple light frequencies/wavelengths, including laser beams that are in the green, red, and infrared spectra. The laser receiver also is capable of discriminating between such laser beams and other interference light sources, particularly fluorescent light sources.

Abstract: A computer implemented route determination system comprises a route generator, a cost scenario generator, and a report generator. The route generator is configured to define a plurality of routes on which move a material between a construction site and a destination site of a plurality of possible destination sites. The cost scenario generator is configured to determine cost scenarios associated with the plurality of routes. The report generator is configured to generate a report which identifies the routes and the cost scenarios for the destination site.

Abstract: Methods and apparatus are provided for estimating parameters, i.e. ambiguities, derived from GNSS signals. Observations of a GNSS signal from each of a plurality of GNSS satellites are obtained (2120). The observations are fed to a filter having a state vector comprising a float ambiguity for each received frequency of the GNSS signals (2140). The filter estimates a float value for each float ambiguity of the state vector and co-variance values associated with the state vector. Integer values are assigned to at least a subgroup of the estimated float values to define a plurality of integer ambiguity candidate sets (2160). A weighted average of the candidate sets is formed (2200). A formal precision value based on covariance values of the filter is determined (2205), the formal precision value being a measure for an achievable precision. An achieved precision value of the weighted average is determined (2210).

Abstract: Methods and apparatus are provided for estimating parameters, i.e. ambiguities, derived from GNSS signals. Observations of GNSS signals are obtained from each of a plurality of GNSS satellites (120). The observations are fed to a filter having a state vector at least comprising a float ambiguity for each received frequency of the GNSS signals (140). The filter estimates float value for each float ambiguity of the state vector. Integer values are assigned to at least a subgroup of the estimated float values to define a plurality of integer ambiguity candidate sets (160). A first number of candidate sets is selected having a quality measure better than a first threshold, wherein the first threshold is determined based on a reference quality measure of a reference candidate set (180). A weighted average of the selected candidate sets is formed, each candidate set weighted in the weighted average based on its quality measure (200).

Abstract: In a method for assuring compliance with a mandated requirement, a control component resident in said mobile electronic device is implemented in response to receiving an indication to limit the operation of the mobile electronic device in a moving vehicle. A position determining component disposed within the mobile electronic device is used to determine the speed of the mobile electronic device. The speed of the mobile electronic device is determined to exceed a speed threshold and the functionality of the mobile electronic device is restricted based upon the determination that the speed threshold has been exceeded.

Abstract: A method for determining an absolute orientation in a global coordinate system is provided. In each grid position an image capturing device is directed to a selected object located in a scene. The method comprises: (A) reconstructing a scale model of the scene using point, line and/or region correspondences in multiple views of the scene obtained by the image capturing device placed in at least three grid positions; (B) obtaining location coordinates of at least three grid positions in the global coordinate system; and (C) determining a similarity transform from a photogrammetric coordinate system to the global coordinate system by determining rotation, translation and scale of the image capturing device for each grid position.