Preparation system for surveying operation

• US 10,705,225 B2
• Filed: 06/12/2014
• Issued: 07/07/2020
• Est. Priority Date: 06/14/2013
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Topcon
• Original Assignee: Kabushiki Kaisha Topcon
• Inventors: Kamizono, Fumihiko, Ogawa, Takashi
• Primary Examiner(s): Gregory, Bernarr E
• Application Number:
  US14/897,980
• Publication Number:
  US 20160124093A1
• Time in Patent Office: 2,217 Days
• CPC Class Codes: G01C 15/002 Active optical surveying means optical plumbing G01C15/105
• CPC Class Codes: G01C 5/00 Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels G01C3/20, G01C3/30 take precedence
• CPC Class Codes: G01S 19/14 specially adapted for specific applications
• CPC Class Codes: G01S 19/41 Differential correction, e.g. DGPS [differential GPS]
• CPC Class Codes: G01S 19/43 using carrier phase measurements, e.g. kinematic positioning; using long or short baseline interferometry
• CPC Class Codes: G01S 19/485 whereby the further system is an optical system or imaging system

Abstract

A preparation system for surveying operation of the present invention includes a mobile station disposed at a known observation point and a fixed station disposed at an unknown reference point. The preparation system includes an arithmetic step to determine the position coordinate of the unknown reference point based on positioning data received by the mobile station, positioning data received by the fixed station, and a position coordinate of the known observation point, and an assigning step to assign the unknown reference point whose position coordinate is determined as the known reference point.

Claims

1. A preparation system for an RTK measurement, comprising:

a rover station physically located at an observation point, wherein a position coordinate of the observation point is known; and

a single base station physically located at a reference point, wherein a position coordinate of the reference point is unknown, and wherein

the base station;

receives from the rover station, positioning data of the rover station determined based on data received by the rover station from at least four satellites,

determines positioning data of the base station based on data received by the base station from at least four satellites,

determines the position coordinate of the reference point, at which the base station is physically located, based on the determined positioning data of the rover station, the determined positioning data of the base station, and the known position coordinate of the observation point, and

assigns a coordinate value on a horizontal surface of the determined position coordinate as a new known horizontal position coordinate for the reference point at which the base station is physically located.

2. The preparation system according to claim 1, wherein

the rover station includes a target to measure a height, and

the base station:

measures the height of the target to acquire a relative height of the base station with respect to the target,

determines a vertical coordinate value on a vertical surface at the reference point based on the measured height and the acquired relative height, and

assigns the determined vertical coordinate value as a new known vertical position coordinate for the base station.

3. The preparation system according to claim 1, wherein

the rover station includes a target to measure a height, and

the base station:

determines a horizontal position relationship between the reference point and the observation point based on the determined positioning data of the rover station and the determined positioning data of the base station,

detects an altitude angle of the target with respect to a reference plane, and

determines a vertical coordinate value on a vertical surface at the reference point based on the determined horizontal position relationship and the detected altitude angle.

4. The preparation system according to claim 3, wherein

the base station is a surveying device including a satellite positioning section, and

the surveying device is any one of an electronic level device, a laser level device, and a total station to form the reference plane.

5. The preparation system according to claim 1, wherein

the rover station includes a target to measure a height,

the base station is a surveying device having a satellite positioning section,

the surveying device is a laser surveying device that rotates and radiates a fan-shaped laser beam tilted against a reference plane, and

the base station:

determines a relative height of the base station with respect to the rover station based on the determined positioning data of the rover station and the determined positioning data of the base station, and

determines a vertical coordinate value on a vertical surface at the reference point based on the determined relative height and an elevation angle of the target with respect to the reference plane.

6. A method for performing an RTK measurement using a preparation system including a rover station physically located at an observation point, wherein a position coordinate of the observation point is known, and a single base station physically located at a reference point, wherein a position coordinate of the reference point is unknown, the method comprising:

receiving, by the base station, from the rover station, positioning data of the rover station determined based on data received by the rover station from at least four satellites;

determining, by the base station, positioning data of the base station based on data received by the base station from at least four satellites;

determining, by the base station, the position coordinate of the reference point, at which the base station is physically located, based on the determined positioning data of the rover station, the determined positioning data of the base station, and the known position coordinate of the observation point; and

assigning, by the base station, a coordinate value on a horizontal surface of the determined position coordinate as a new known horizontal position coordinate for the reference point at which the base station is physically located.