Abstract: A surveying system including a surveying device and a terminal device for assisting in placement of a staking tool. The surveying system further includes: a design information acquisition unit for acquiring design information including a designed slope; a surveying information acquisition unit for transmitting surveying information to a terminal device; a current state estimation unit for calculating an estimated altitude of a current ground in accordance with the surveying information; an intersection calculation unit for calculating a coordinate of an intersection between the current ground and the designed slope based on the estimated altitude of the current ground and the design information; a stake shape determination unit for determining a shape of a stake to be placed; and a stake shape information unit for causing the terminal device to inform of the shape of the stake determined by the stake shape determination unit.

Abstract: Provided is a surveying assistance method comprising making a computer read design information including center point data of center points set on a centerline of a route and constituent point data of constituent points set on sections including the center points, the section being orthogonal to the centerline, acquires position information indicating a current position of a surveyed device at a predetermined period, calculate a horizontal distance and a vertical distance between the current position and a reference point on a designated section based on the position information and the design information, display the horizontal distance and the vertical distance on a screen of the computer as survey information, and update the display at intervals of the predetermined period, and the reference point is a point to be selected from the center points or the constituent points.

Abstract: A surveying assistance device is a computer configured to read design information including center point data of a center point set on a centerline of a route and constituent point data of constituent points set on a section including the center point, the section being orthogonal to the centerline, acquire position information indicating a current position of a surveyed device with a predetermined period, creates a plan view from the design information and display the plan view on a terminal screen unit, display the current position on the plan view and updates the display every time the position information is acquired, record the acquired position information in a storage as an observation data, and display reference lines indicating positions which are distant from the designated section backward and forward in a route direction by a preset distance limit on the plan view.

Abstract: Provided is a surveying assistance device reading design information including center point data and constituent point data of a route, in which a cross-section including a center point is set, acquiring position information indicating a current position of a surveyed device, creating a plan view and a cross-sectional view of the route from the design information, displaying the plan view and the cross-sectional view on a terminal screen unit, recording the acquired position information and survey information in a storage, displaying an observation point data list in which the observation point data is arranged as data placed in order and an observational cross-sectional view displaying positions of observation points on the cross-sectional view on the terminal screen unit, making the display order of the observation point data rearrangeable, and displays a connection line connecting the observation points on the observational cross-sectional view following the rearranged display order.

Abstract: A portable display terminal for survey assistance includes: a screen unit and a selection unit of the portable display terminal; a design information acquisition unit configured to acquire design information including an identifier of a design drawing, and a plan view, a longitudinal sectional view, and a transverse sectional view that are associated with the identifier; a design information summarization unit configured to generate summary drawings of the design drawing; a design information selection display unit configured to line up and display a plurality of combinations of the summary drawings in a selectable manner; and a screen display unit configured to display an image of at least one of the plan view, the longitudinal sectional view, or the transverse sectional view of the design drawing associated with the combination of the summary drawings selected by a selection unit on a screen unit of the portable display terminal.

Abstract: Provided is a survey method using a position acquiring device that acquires position coordinates of a worker and a mobile terminal capable of communicating with the position acquiring device. the mobile terminal sets an advancing direction of observation and a first measurement point in three-dimensional design data, and makes the position acquiring device acquire position coordinates of the worker, the mobile terminal guides the worker to the first measurement point, makes the position acquiring device acquire position coordinates of the worker at the first measurement point, and sets a point nearest from the first measurement point in the advancing direction as a second measurement point, and after that, a position of the worker, setting of a next measurement point, and guidance to the next measurement point are repeated.

Abstract: A surveying system for assisting placement of a slope staking tool including a picket, a crossbeam, and a slope beam. The surveying system includes a design information acquisition unit configured to acquire design information including a designed slope; a current slope estimation unit configured to calculate a current slope in accordance with the results of surveying the current slope; a first intersection calculation unit configured to calculate a coordinate of a first intersection between the current slope and the designed slope using the current slope estimated by the current slope estimation unit and the design information, and to display the coordinate on the screen unit; and a second intersection calculation unit configured to calculate, using the surveying device, an altitude difference between any position on the crossbeam placed and a plane including the designed slope and to display the altitude difference on the screen unit.

Abstract: Provided is a technology that enables even a beginner to easily perform finished shape observation by following precautions for use of a GNSS. A finished shape observation system includes a reference station, a mobile station, and a mobile terminal, wherein the mobile terminal includes a mobile station first confirming unit configured to confirm whether a slope distance between the reference station and the mobile station is larger than a prescribed value when measuring each of the observation points, a mobile station second confirming unit configured to confirm whether a slope distance between a first known point and the mobile station is larger than a prescribed value when measuring each of the observation points, and a mobile station third confirming unit configured to confirm whether an elapsed time from a measurement time of the first known point exceeds a prescribed value when measuring each of the observation points.

Abstract: A surveying system including a surveying device and a terminal device for assisting in placement of a staking tool. The surveying system further includes: a design information acquisition unit for acquiring design information including a designed slope; a surveying information acquisition unit for transmitting surveying information to a terminal device; a current state estimation unit for calculating an estimated altitude of a current ground in accordance with the surveying information; an intersection calculation unit for calculating a coordinate of an intersection between the current ground and the designed slope based on the estimated altitude of the current ground and the design information; a stake shape determination unit for determining a shape of a stake to be placed; and a stake shape information unit for causing the terminal device to inform of the shape of the stake determined by the stake shape determination unit.