A control device includes a direction identifying data generator that generates direction identifying data including at least a portion of acquired point group data indicating a position of a region including the ridge in front of an agricultural vehicle in a traveling direction, a direction identification part that identifies a direction of the ridge on the basis of the direction identifying data, and a travel control part that controls the agricultural vehicle such that the agricultural vehicle travels in the direction of the ridge identified by the direction identification part.

In order to control a measuring system with a tacheometer mounted on a carrier trolley circulating on a railway track under construction and a target fastened to a railway construction machine, the carrier trolley is circulated on the railway track in a working direction from a starting position to an arrival position in the vicinity of a topographic arrival singularity. The carrier trolley is immobilized and an observation of the topographic arrival singularity is made. Then, with the railway construction machine having been brought into the starting position, an observation of the target is made. Finally, the coordinates of the arrival position of the carrier trolley are calculated as a function of the measurements made, of additional data relating to the starting position, and of positioning data of the topographic arrival singularity and data relating to a theoretical line of the track.

In order to control a measuring system with a tacheometer mounted on a carrier trolley circulating on a railway track under construction and a target fastened to a railway construction machine, the carrier trolley is circulated on the railway track in a working direction from a starting position to an arrival position in the vicinity of a topographic arrival singularity. The carrier trolley is immobilized and an observation of the topographic arrival singularity is made. Then, with the railway construction machine having been brought into the starting position, an observation of the target is made. Finally, the coordinates of the arrival position of the carrier trolley are calculated as a function of the measurements made, of additional data relating to the starting position, and of positioning data of the topographic arrival singularity and data relating to a theoretical line of the track.

A reel assembly for an agricultural header includes a reel arm configured to couple to a frame of the agricultural header and configured to support a reel of the reel assembly. The reel assembly further includes a device mounting assembly movably coupled to the reel arm and configured to support a device that is configured to monitor a terrain feature. The device mounting assembly is configured to move between an extended position and a retracted position relative to the frame to move the device between a first position corresponding to the extended position of the device mounting assembly and a second position corresponding to the retracted position of the device mounting assembly. The device mounting assembly is configured to enable the device to monitor the terrain feature at the first position and the second position.

A reel assembly for an agricultural header including a reel arm configured to rotatably couple to a frame of the agricultural header and configured to support a reel of the reel assembly. The reel assembly further includes a device mounting assembly coupled to the reel arm and configured to support a device that is configured to monitor a terrain feature. The device mounting assembly is configured to maintain an orientation between the device and a ground on which the agricultural header is positioned as the reel arm rotates relative to the frame of the agricultural header.

A surface profiler comprises at least one front support wheel and at least one rear support wheel for travelling along the surface of a profile to be measured, the rotational axes of said wheels being longitudinally spaced and collinear. A frame carried on the support wheels carries at least one inclinometer, and may also carry a first optical encoder to measure distance travelled. A subframe carried on at least two subframe wheels is pivotally coupled to the frame between the support wheels using a parallelogram linkage. The subframe support wheels are collinear with each other and with the support wheels. A second optical encoder measures the angle between the frame and the subframe. Incremental measurements of inclination angle provided by the inclinometer and the angle between the frame and the subframe, produce a series of elevations representing the surface profile.

A surface profiler comprises at least one front support wheel and at least one rear support wheel for travelling along the surface of a profile to be measured, the rotational axes of said wheels being longitudinally spaced and collinear. A frame carried on the support wheels carries at least one inclinometer, and may also carry a first optical encoder to measure distance travelled. A subframe carried on at least two subframe wheels is pivotally coupled to the frame between the support wheels using a parallelogram linkage. The subframe support wheels are collinear with each other and with the support wheels. A second optical encoder measures the angle between the frame and the subframe. Incremental measurements of inclination angle provided by the inclinometer and the angle between the frame and the subframe, produce a series of elevations representing the surface profile.

A shielding detection unit (111) detects one or more shielded sections in which a road surface of a target road, on which a measuring vehicle has traveled, has not been measured, based on three-dimensional point group data indicating a three-dimensional coordinate value of each measurement spot that has been measured by a laser scanner mounted on the measuring vehicle. A result display unit (112) generates a target road map and displays the target road map, the target road map indicating the target road and indicating the one or more shielded sections in a manner to distinguish the one or more shielded sections from each unshielded section in which the road surface of the target road has been measured.

A shielding detection unit (111) detects one or more shielded sections in which a road surface of a target road, on which a measuring vehicle has traveled, has not been measured, based on three-dimensional point group data indicating a three-dimensional coordinate value of each measurement spot that has been measured by a laser scanner mounted on the measuring vehicle. A result display unit (112) generates a target road map and displays the target road map, the target road map indicating the target road and indicating the one or more shielded sections in a manner to distinguish the one or more shielded sections from each unshielded section in which the road surface of the target road has been measured.

An apparatus and a method for rolling weight deflection measurement comprising a rolling wheel to be moved along a measuring surface in a first direction. The apparatus comprises a number of spaced apart range sensors arranged on at least one carrier and configured to measure a distance to said measuring surface at pavement locations passed by the apparatus. A first of said range sensors is arranged at a predetermined location with respect to said rolling wheel, and the remainder of the range sensors are arranged in spaced apart manner in line with said first range sensor in the in first direction. At least one inclination sensor is configured to measure at least a change in inclination of said at least one carrier, a curvature parameter value for said measuring surface is calculated using measurements from said range sensors and said inclination sensor.