Abstract: A position measurement method includes a point group data generation step of generating point group data indicating a position of an object around a predetermined route measured by a measurement unit moving along the route, an acquisition step of acquiring a plurality of pieces of point group data generated by being measured at different timings with respect to the same route, and a position identification step of identifying a detection target position indicating a position of a predetermined object present around the route on the basis of a difference in the position for each of the plurality of pieces of point group data.

Abstract: A shielding object identifying unit identifies a partial point cloud representing a shielding object existing in a Fresnel zone on a basis of point cloud data indicating a position of the shielding object in the Fresnel zone between two wireless stations. A criterion decision unit decides an evaluation criterion of propagation loss by the shielding object on a basis of distribution of the partial point cloud. A determination unit makes determination related to communication between the two wireless stations on a basis of the evaluation criterion.

Abstract: A method includes generating, based on data indicating the travel trajectory of a mobile object, which acquires point group data indicating the position of an object present in a three-dimensional space within a predetermined measurable distance, the measurable distance, candidate base station position data indicating a candidate position for installing a base station apparatus, and candidate terminal station position data indicating a candidate position for installing a terminal station apparatus, data indicating the positional relationship between the travel trajectory and a candidate base station position, and data indicating the positional relationship between the travel trajectory and a candidate terminal station position; generating data indicating a measurable range based on the travel trajectory data and the measurable distance; generating data indicating a connecting line segment connecting the candidate base station position and the candidate terminal station position based on the candidate base sta

Abstract: A gas wiping nozzle configured to blow wiping gas onto a metal strip includes a first nozzle member and a second nozzle member provided to face each other, in which a slit as a gas blowing port is formed to extend in a length direction between end portions of the first nozzle member and the second nozzle member on the metal strip side; and a shim member configured to adjust a gap of the slit in a width direction orthogonal to the length direction, wherein the shim member is made of a ceramic material or a carbon material, each of the first nozzle member and the second nozzle member has a groove portion, and the shim member is fitted into both of the groove portions of the first nozzle member and the second nozzle member and fixes the first nozzle member and the second nozzle member.

Abstract: A station deployment support method includes a positional relationship identification step of, based on travel trajectory data of a mobile object that measures an object present in a three-dimensional space within a predetermined measurable distance and acquires point group data on the measured object, the measurable distance, candidate base station position data, and candidate terminal station position data, generating base station positional relationship identification data and terminal station positional relationship identification data; a measurable range identification step of generating measurable range data based on the travel trajectory data and the measurable distance; and a travel trajectory selection step of selecting at least one piece of travel trajectory data so that the proportion of the measurable range in a predetermined evaluation area satisfies a predetermined value.

Abstract: The present invention performs: generating base station positional relationship specification data indicating a positional relationship between travel trajectory and a base station candidate position, and terminal station positional relationship specification data indicating a positional relationship between the travel trajectory and a terminal station candidate position, based on travel trajectory data indicating the travel trajectory of a moving body for measuring an object present in a three-dimensional space within a measurable distance predetermined and acquiring point cloud data indicating a position of the object measured in the three-dimensional space, the measurable distance, base station candidate position data indicating a candidate position for installing a base station apparatus, and terminal station candidate position data indicating a candidate position for installing a terminal station apparatus; and specifying a reliability coefficient indicating a degree of reliability of a processing result

Abstract: A line-of-sight determination method includes: a point cloud data acquisition step of acquiring point cloud data including a first position indicating a position of a first wireless station and a plurality of second positions indicating positions on a structure serving as a candidate in which a second wireless station opposing the first wireless station is to be installed; and a line-of-sight determination step of determining whether or not there is a line of sight between the first position and at least one of the second positions, and determining whether or not there is a line of sight between the first wireless station and the structure based on the determination result.

Abstract: To provide an interference evaluation apparatus including a station information storage unit configured to store interfering station information indicating station information related to an interfering station causing radio interference in radio communication and interfered station information indicating station information related to an interfered station receiving the interference, and a determination unit configured to perform an interference calculation for calculating an interference power, based on the interfering station information and the interfered station information stored in the station information storage unit, and determine whether the interfering station and the interfered station are usable together, based on the calculated interference power and an acceptable interference power in the interfered station.

Abstract: An aspect of the present invention provides a shield factor calculation apparatus including: a point cloud data selection unit that selects point cloud data that satisfies a condition from point cloud data acquired in a multiple-passing area that is a region through which a mobile body that acquires the point cloud data indicating a shielding object in a space between a transmitting station and a receiving station has passed a predetermined number of times or more from among areas through which the mobile body has passed; a voxel splitting unit that splits a Fresnel zone into a plurality of voxels with sizes in accordance with positions in the Fresnel zone, based on information indicating an acquisition condition when the point cloud data selected by the point cloud data selection unit is acquired and information indicating an acquisition condition when the point cloud data is acquired in an area other than the multiple-passing area; a calculation unit that calculates a shield factor of a radio wave based on

Abstract: In two-dimensional map data showing buildings to be candidates in which terminal station devices are to be installed, a position of a base station installation structure to be a candidate in which a base station device is to be installed is set as a base station candidate position, an unobstructed view for each of the buildings from the base station candidate position is determined based on the map data while excluding a region blocked by the building having an unobstructed view from the base station candidate position, and a range of a contour line having an unobstructed view of the building determined as having the unobstructed view is detected as an unobstructed view range. A candidate of, among wall surfaces of the building corresponding to the detected unobstructed view range, the wall surface on which the terminal station device can be installed is extracted.

Abstract: On two-dimensional map data indicating buildings serving as candidates for installing terminal station devices, locations of base station installation structures serving as candidates for installing base station devices are set as base station candidate locations, and for each of the base station candidate locations, buildings that have other buildings between themselves and the base station candidate location are selected as visibility detection subject buildings. The heights of the buildings are set at an identical length, a higher position than the buildings is set as an installation altitude of the base station devices, and for each selected visibility detection subject building, a visibility range of the visibility detection subject building from the installation altitude of the base station device in the base station candidate location is detected.

Abstract: A measurement method includes: a data acquisition step of acquiring position data output from a measurement device configured to move round-trip on a movement route and measure a position of an object in a periphery of the movement route, the measurement device using a plane having a depression angle or an elevation angle with respect to a plane that is orthogonal to a forward direction as a measurement target; and a point group data generation step of generating point group data for an object in the periphery of the movement path using the position data obtained during movement of the measurement device on an outbound trip and position data obtained during movement of the measurement device on a return trip.

Abstract: A measurement device configured to move along a movement path and measure the position of an object in surroundings of the movement path includes: a measurement unit configured to measure the position of the object with a plurality of surfaces as measurement targets, the plurality of surfaces facing in directions different from each other; and a point group data generation unit configured to generate point group data of the object in surroundings of the movement path by using positional data representing the position of the object measured by the measurement unit.

Abstract: One aspect of the present invention is a shielding rate calculation device including a voxel division unit for dividing a Fresnel zone into a plurality of voxels each having a size corresponding to acquisition conditions at the time of acquiring point group data indicating a shielding object in an inter-wireless-station space between a transmission station and a reception station, and a calculation unit for calculating a shielding rate against a radio wave traveling from the transmission station toward the reception station on the basis of a position, a shape, and a size of a shielding voxel, which is a voxel at a position indicated by the point group data, among the plurality of voxels.

Abstract: An interference evaluation method for evaluating, over an area, radio-wave interference that occurs between a first radio station and a second radio station includes: a distinguishing step of acquiring information indicating topographic cross-sections of respective azimuths centered about the first radio station, and distinguishing the topographic cross-section into a segment in which there is visibility from the position of the first radio station and a segment in which there is no visibility from the position of the first radio station; and a specification step of specifying a position at which a desired interference amount is reached based on a distance between the first radio station and the second radio station in a segment distinguished as having visibility from the position of the first radio station, and specifying a position at which the desired interference amount is reached by evaluating the radio-wave interference for each square of an evaluation target region segmented into squares in a segment d

Abstract: In two-dimensional map information showing communication equipment installation structures on which communication equipment is installed, roads, and buildings, a narrow region between the buildings is detected based on a distance of an interval of the buildings adjacent to each other and a predetermined length and a connection line connecting the buildings is imparted to an opened portion of the detected narrow region, a line-of-sight detection line is extended with any one of the communication equipment installation structures set as a start point and the line-of-sight detection line is rotated around the start point, intersections of the line-of-sight detection line and a contour line of the building or the connection line is detected and the intersection at a shortest distance from the start point among the detected intersections is detected as a line-of-sight intersection, and, when the line-of-sight intersection and another line-of-sight intersection belong to the same building, a line-of-sight range lin

Abstract: The interference power estimation apparatus 1 calculates an inter-station vector from an interfering station over a sphere to an interfered station installed in the sphere based on a position of each station. In a case where a line segment connecting the position of the interfered station and the position of the interfering station does not intersect with the sphere, an angle between an antenna direction vector representing a direction of an antenna from the position of the interfered station and the inter-station vector is derived, and a sum of an antenna directivity attenuation amount obtained based on the angle and propagation losses calculated based on a distance between the interfered station and the interfering station is calculated.

Abstract: A station placement design method includes: extracting candidates for an installation location of a wireless base station from point group data in accordance with designated conditions for an installation location of a wireless base station; determining presence/absence of visibility between a plurality of designated wireless terminal stations and the candidates for an installation location of a wireless base station based on the point group data and generating a first list including information in which the candidates for an installation location of a wireless base station and wireless terminal stations determined to have presence of visibility for the candidates for an installation location of a wireless base station are associated with each other; generating a second list including information representing combinations of the candidates for an installation location of a wireless base station that enable all of the plurality of designated wireless terminal stations to be accommodated based on the first list

Abstract: An installation candidate presentation device extracts, for each of one or more installation candidates that are candidates for an installation place of a first wireless device, by using planar map data indicating a planar map of a region including the installation candidates, and a target building at which second wireless devices are to be installed, respectively, an outline range of the building, which is visible from the installation candidate. The installation candidate presentation device calculates, for each installation candidate, by using three-dimensional map data indicating a three-dimensional map obtained by measuring the same region as the planar map data, area of part of a wall surface corresponding to the extracted outline range, the part being visible from the installation candidate, and calculates a total of the area calculated for the building in the region. The installation candidate presentation device presents an installation candidate selected based on the calculated total.

Abstract: Point cloud data between a base station device and a terminal station device is acquired as a point cloud data group. A radius of a first Fresnel zone defined by the base station device and the terminal station device at each position where the point cloud data group is acquired is calculated. A region specified by the radius at each position where the point cloud data group is acquired is scanned to detect the point cloud data, and a non-line-of-sight region is extracted. A ratio of a total area of all the extracted non-line-of-sight regions to an area of a region constructed by the first Fresnel zone is calculated. A received power is estimated based on the calculated ratio between the areas. Whether or not there is a line of sight between the base station device and the terminal station device is determined based on the received power.