Kabushiki Kaisha Topcon

Mitsui Co., Ltd.

Other

Kenichi Takasu

Yuji Kobayashi

Kazuhiro Ogawa

Koji Miyasaka

Masakazu Mori

Kazuyuki Sakaki

Shigeyuki Yamaguchi

Mitsuru Ogawa

In a positioning system, an arithmetic processor analyzes positioning data acquired by a receiving terminal and determines a positioning target location. Upon reception of positioning data, the arithmetic processor accumulates the positioning data on analysis data stored in a storage section prior to the reception, stores an accumulated data as new analysis data, and transmits an analysis result to the receiving terminal. The receiving terminal transmits positioning data, acquired for a predetermined time, to the arithmetic processor and continues to acquire positioning data. Upon reception of the analysis result, the receiving terminal determines whether the analysis result is good or poor. When the analysis result is poor and the positioning data is stored for the predetermined time from a last transmission of the positioning data, the receiving terminal transmits the positioning data to the arithmetic processor and continues to acquire positioning data. If the analysis result is good, the receiving terminal completes positioning of the positioning target location.

Positioning system and method

The invention is directed to an RTK-GPS survey system. The survey system includes a server () in an IP-VPN communication networkfor establishing communications between base stations (and) that transmit correction data and a rover stationthat receives the correction data. Each satellite positioning device constituting a base station and a rover station includes at least a satellite positioning unit () that receives radio waves from artificial satellites, a communication unit () that performs a communication between the satellite positioning device, and a control unit () that controls the satellite positioning unit () and the communication unit (). The control unit () of the rover stationcan receive interference information registered in the control unit () of each satellite positioning device of the base stations (and), and select a base station that transmits most appropriate correction data among the plural base stations.

RTK-GPS survey system

An RTK-GPS surveying system for surveying an object includes at least one satellite positioning device as a base station configured to send correction data, a plurality of satellite positioning devices as rover stations configured to receive the correction data, and a server provided in an IP-VPN communication network for establishing communication between the satellite positioning device as the base station and the plurality of satellite positioning devices as the rover stations, each of the satellite positioning devices has a satellite positioning part for receiving radio wave from a satellite, a communication part for performing communication between each of the satellite positioning devices, and a control part for controlling the satellite positioning part and the communication part.

RTK-GPS surveying system

A method includes determining a first time by a first determining system. The method also includes determining a second time and a spatial position of a terminal receiving the second time, by a second determining system which is different from and independent of the first determining system. The terminal stores, in combination, the first time determined by the first determining system and the second time and the position determined by the second determining system, at each time of determining the spatial position of the terminal, in such a manner that the first time, the second time and the position are arranged in a row when they are outputted, wherein the first and second times are independent of each other.

Method and apparatus for determining position

A GPS positioning system that has: at least one mobile station to measure a positional coordinate by receiving radio wave from a satellite; a plurality of fixed stations that have predetermined positional coordinates and receive radio wave from the satellite; and arithmetic processing means, which is connected with at least one mobile station and a plurality of fixed stations via communication, and that transmits correction data suitable for the mobile station to the mobile station based on positioning data transmitted from the mobile station.

Satellite position measurement system

A GPS positioning system comprises a fixed station and a mobile station. The mobile station has: positional positioning means; imaging means; direction detecting means; and arithmetic processing means. The positional positioning means measures positional coordinates by receiving radio weve from a satellite. The imaging means is arranged in a predetermined position for the GPS positional positioning means. The direction detecting means detects a photographing direction during photographig by the imaging means. The arithmetic processing means forms landscape data in which imaging data that is an output from the imaging means is associated with orientation data that is an output from the direction detecting means.

Growing community of inventors

Tokyo, Japan

Kenichi Takasu