WO1998044363A1 - Surveying method and surveying system comprising a radio navigation unit - Google Patents
Surveying method and surveying system comprising a radio navigation unit Download PDFInfo
- Publication number
- WO1998044363A1 WO1998044363A1 PCT/SE1998/000498 SE9800498W WO9844363A1 WO 1998044363 A1 WO1998044363 A1 WO 1998044363A1 SE 9800498 W SE9800498 W SE 9800498W WO 9844363 A1 WO9844363 A1 WO 9844363A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- surveying
- equipment
- radio navigation
- surveying equipment
- anyone
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 19
- 238000005259 measurement Methods 0.000 claims description 45
- 238000012937 correction Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 240000001913 Atriplex hortensis Species 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
- G01S19/48—Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system
- G01S19/485—Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system whereby the further system is an optical system or imaging system
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
- G01S19/51—Relative positioning
Definitions
- This invention relates to a positioning system comprising an electronic surveying equipment such as a total station, and at least one radio signal position measuring unit, for instance a GNSS (Global Navigation Satellite System), such as a GPS (Global Position Satellite), unit.
- GNSS Global Navigation Satellite System
- GPS Global Position Satellite
- An electronic surveying equipment comprises an integrated distance and angle measuring instrument, which eiectro-optically makes measurements towards a target, such as a reflector, for instance a cube corner prism or mirror arrangement or the like, and/or some other kind of active target that the station can lock on.
- a target such as a reflector, for instance a cube corner prism or mirror arrangement or the like, and/or some other kind of active target that the station can lock on.
- a target such as a reflector, for instance a cube corner prism or mirror arrangement or the like
- United States Patent 5,233,357 discloses a terrestrial surveying system comprising an electronic surveying equipment and at least one portable position-measuring unit equipped with a GPS antenna.
- the disclosed system requires that two persons perform the surveying, one standing at the surveying equipment and the other at the plumb rod having the GPS antenna.
- the surveying equipment is provided with a computer.
- the GPS system transmits position data wirelessly to the surveying equipment to be processed in its computer.
- the person standing at the surveying equipment makes measurements towards the plumb rod having the GPS antenna in the case that the rod is placed where the GPS antenna has a bad or no view of the GPS satellites.
- An object of the invention is to provide a surveying system able to be operated by only one person who transports a measuring rod or some other measuring object to the points to be measured.
- Another object of the invention is to provide a surveying system operable by a single person for placing measuring points at predetermined places on the ground or positioning some object, such as a rail, a ship or the like, along a predetermined path.
- Still another object of the invention is to provide a surveying system comprising a surveying equipment with means for determination of the horizontal reference direction without the use of so called “backwards objects" having known predetermined positions, such as church towers or the like, for its orientation.
- the surveying equipment needs no equipment providing a reference to north nor the use of predetermined position data of points in the surroundings towards which the instrument has to be directed before measurement.
- the operator has full freedom to either make measurements by using the surveying equipment, such as a total station, in a conventional way and/or to make measurements by using the radio navigation system, such as the GPS, whichever is best adapted to the actual measuring point.
- the surveying equipment such as a total station
- the radio navigation system such as the GPS
- the operator standing at the measuring point can remotedly order the surveying equipment to search for the measuring rod and lock on it, make registrations of measurements taken either by the surveying equipment or by the GPS unit without transmitting position data to the surveying equipment.
- FIG 1 illustrates a first embodiment of the system according to the invention
- FIG 2 illustrates a second embodiment of the system according to the invention.
- a surveying equipment for instance a total station manufactured by GEOTRONICS AB, is provided with a mounting onto which a GPS antenna 2 (or an antenna for some other radio navigation system) can be releasably mounted.
- This mounting can be an upper handle of the surveying equipment.
- the GPS antenna 2 is connected to a GPS receiver 4, which preferably is removable.
- the surveying equipment is provided with a removable panel unit 3 comprising computing means 3 '.
- This panel unit 3 is a part of the system which can be optionally attached to an ordinary total station.
- the panel 3 is intended to be plugged into the surveying equipment 1 when the GPS unit 2,4 is used on the surveying equipment.
- the panel 3 comprises a computing unit and storage means 9, 10, 12 for storing data, as illustrated as the block 3 ' in FIG. 1.
- the removable panel unit 3 is adapted to co-operate with both the GPS receiver 4 and the surveying equipment 1 at will and comprises a computer provided with a program system adapted for both the GPS receiver and the surveying equipment.
- the surveying equipment 1 is placed at an appropriate point on the ground.
- a reference station for GPS differential measurements (not shown) is situated at a spot known per se.
- This reference station could be a base station provided by the local district or any other kind of station, for instance a station centrally placed on a point having a known position.
- the coordinates (x0,y0,z0) for the surveying equipment 1 are determined by GPS data for the surveying equipment having the GPS antenna mounted on the mounting, and the panel 3 placed at the station.
- the surveying equipment 1 In order to be able to use the surveying equipment 1 for providing positions of measuring points not only must its position be known but also its reference direction in a horizontal plane determining the direction of the surveying equipment in relation to north. In the prior art, reference measurements had to be taken at points in the vicinity having priorly known positions, such as church towers or the like. In the inventive system the surveying equipment will be provided with a reference horizontal direction using the GPS equipment without the need for such reference measurements. Then the reference GPS-station is used in d fferential measurements in order to provide exact position data for the GPS-equipment.
- the horizontal reference direction of the surveying equipment 1 is found by the following steps: 1. placing the radio navigation unit at and measuring the position of the surveying equipment 1 and storing the surveying equipment position in a store in the panel means 3;
- the GPS antenna 2 When measurements to different measuring points in the area are to be done the GPS antenna 2, the GPS receiver 4, and the master panel unit 3 are removed from the surveying equipment 1, as illustrated by the arrows A, B and C, and placed on a measuring rod 6 (or other device to which measurements could be made, like a vehicle of some kind) having a target unit 7, such as a reflector or some other active target for the survey equipment to lock on, and towards which the survey equipment will make its measurements.
- the GPS antenna and receiver instead could be doubled and fixed on the surveying equipment and on the surveying object 6. Then only the panel 3 is releasable and movable between these elements and connectable to the total station and to the fixed GPS equipment on both the survey equipment and survey object.
- the "zero point" of the GPS antenna ought to be centred with the "zero point” of the target on the rod such that the phase centre of the GPS antenna coincides with the point on the target onto which the survey equipment locks or is pointed to (zero point).
- the "zero point” of the target is coincident with the centre line of the rod 6.
- An offset between the antenna phase centre and the target centre with respect to the rod rotational axis involves an uncertainty as regards the position unless the rotational angle of the rod around its centre axis is exactly known. Therefore, both the target and the GPS antenna means of attachment ought to be constrainedly centred on the rod.
- the GPS antenna ought to have its phase centre on the vertical rotational axis of the surveying equipment when placed there.
- the GPS antenna should be placed on a constrainedly centred means of attachment.
- the rod After measuring of the position of the surveying equipment and placing the panel 3 on the measuring rod 6, the rod is moved to a suitable reference measuring point (xl,y l,zl) easily reachable for the surveying equipment 1 and not hidden from the GPS satellites to be used by the GPS antenna. From the GPS unit the co-ordinates of the reference point (xl,yl,zl) are provided. The computing unit 3 ' in the panel 3 then calculates the vector (x0,y0,z0) - (xl,yl,zl) giving the direction from the surveying equipment 1 to the reference measuring point. This direction data is preferably transmitted to the surveying equipment 1, thereby providing its reference horizontal direction, as illustrated by the arrow 13.
- the surveying equipment 1 is of a kind which by itself, on remote order from the operator standing at the measuring rod 6, can search for and lock onto the target 7 on the rod 6. This feature is common in the art and therefore not described in further detail.
- the rod 6 (or other object) is thus provided with a transceiver unit 8 for sending an order signal.
- the surveying equipment 1 is provided with a transceiver unit 9 which reacts to the order signal by starting the search and locking procedure, as illustrated by the arrow 14.
- the surveying equipment 1 is locked on the target 7 it measures the distance to it and also its vertical and horizontal directional angles. It should be noted that the horizontal reference for the surveying equipment 1 has not yet been determined.
- Data for the rod point is thus measured by both the GPS unit and the surveying equipment 1.
- the azimuth calculated from the GPS measurements may now be used to define the reference angle at the surveying equipment.
- This reference angle could be transmitted to the surveying equipment from the GPS unit on the rod, for instance via radio or an IR-beam or the like, as illustrated by the arrow 13, or it is possible to make a correction for the divergence between the angle measured by the surveying equipment and the known azimuth in the panel 3.
- the operator could then move the rod to appropriate measuring points and choose whether the measuring point in question should be measured by GPS and/or by the surveying equipment 1 and sent over to the panel as illustrated by the arrow 15.
- the measuring values are stored in a store 9 for GPS measurements or in a store 10 for surveying equipment measurements, respectively, in the computer 3 ' belonging to the panel 3.
- the operator can observe the actual available data on a display 11 on the panel 3. It is also possible to have the measurements measured by the survey equipment stored in a store 17 in the equipment for transfer to the panel when it is released from the surveying object and connected to the survey equipment later on.
- Appropriate surveying set points or paths to which actual measuring points are to be compared and positioned could also be stored in a surveying chart store 12 in the computer 3 ' in the panel 3 before a series of measurements are started and later shown on the display 11.
- This storage is preferably done at the office from a computer, m which all the data for the actual surveying to be done have been calculated, before the operator departs for the area for the actual surveying. The operator could thus then be guided to each set point or path by measurements provided by the GPS or by the surveying equipment being constantly locked onto and following the target when the surveying object is moved.
- the operator can order the surveying equipment to search and lock to the target on the rod 6 and then make the distance and angle measurements.
- the data can be transmitted to the panel 3 on the rod where the position is calculated and stored in its computer and shown on the display for guiding the operator.
- all guiding and computing needed for the surveying is done in the computer in the panel 3.
- the measuring method described above is a method that a single operator could easily manage.
- a prerequisite for this method is that the surveying equipment is provided with a servo system for following the movement of the rod and a unit making it possible to be locked on to the target on the rod. Units are provided for wireless data transmission between the surveying equipment and the rod.
- the measurement procedure is, in brief:
- the panel 3, when mounted at the rod 6, could send direction information data to the surveying equipment 1 from which the surveying equipment can begin its searching operation.
- the position of the rod may then be hidden from the GPS satellites. An earlier measured position in the vicinity of the present position may therefore be chosen by the operator.
- the direction between the surveying equipment 1 and the rod 6 could be calculated and sent to the surveying equipment 1, (arrow 13) at need as the direction from which its searching should start from.
- the GPS equipment on the rod could measure the position of the rod, calculate the direction between the surveying equipment 1 and the rod 6, and send the direction data to the surveying equipment.
- the surveying equipment would then be controlled to be directed in the calculated direction. This could be done continuously, updated at the rate determined by the measuring and calculating rate of the GPS equipment.
- the surveying equipment 1 could in this way be kept directed to the rod 6 to follow its movements even when its view of the rod is obstructed.
- This above procedure can be done stepwise for each updating measurement, but it can also follow the movements of the rod in a smooth angular movement calculated from the last angular position calculation and earlier calculations, its actual angular position being updated at each measurement and calculation by the GPS equipment. This will make the position measurements very fast and precise. It is also possible to make measurements to an object continuously and also automatically by having, for instance, both the GPS equipment and the surveying equipment make measurements at the same time for the same measuring point at intervals only determined by the measuring rate for each kind of station.
- the two kinds of measurements for each measuring point are compared with each other. One of the measurements could then be rejected, particularly if the results of that kind of measurement have been distorted. Otherwise, a weighted average value of the two kinds of measurements (GPS and Surveying equipment) could be calculated.
- a surveying equipment 1 without the possibility to automatically search for and lock to a target.
- the operator takes the rod or some other surveying object provided with the GPS antenna, its receiver and panel 3 to a reference measuring point. The operator makes the measurement using the GPS equipment. The position data (x,y,z) of the reference point is stored in the panel. Thereafter, the operator removes the panel and GPS unit from the rod, as illustrated by the arrow D, and takes them to the surveying equipment 1. He plugs the panel 3 onto the surveying equipment 1, connects them to the same, and determines its position (x0,y0,z0) by GPS measurements.
- a. Place the GPS unit and the panel 3 onto the rod 6. Move the rod to a reference measuring point. Measure the rod position using GPS. Store the data in the panel. b. Leave the rod in the reference measuring point. Move the panel and the GPS unit 2,4 to the surveying equipment. Direct the surveying equipment towards the target (reflector) on the rod manually. The reference horizontal angle is calculated using GPS data. c. Measurements of measuring points can thereafter be done in a conventional way from the surveying equipment 1. This requires that someone or something moves the rod to the setting out points.
- the removable panel could be connected to a separate GPS receiver but it could also comprise the GPS receiver as an integrated part.
- a device to which measurements could be made other than a rod could be provided, such as a vehicle to be moved along a path of some kind, a person or an animal to be followed, or the like. Both the surveying equipment and the rod could have a permanently seated GPS antenna. This could be due also for the GPS receiver.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54153098A JP4212121B2 (en) | 1997-04-01 | 1998-03-19 | Exploration method and exploration device provided with radio navigation device |
EP98914184A EP0972210B1 (en) | 1997-04-01 | 1998-03-19 | Surveying method and surveying system comprising a radio navigation unit |
US09/402,258 US6175328B1 (en) | 1997-04-01 | 1998-03-19 | Surveying method and surveying system comprising a radio navigation unit |
DE69818440T DE69818440T2 (en) | 1997-04-01 | 1998-03-19 | MEASURING METHOD AND SYSTEM WITH A RADIO NAVIGATION UNIT |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9701186-0 | 1997-04-01 | ||
SE9701186A SE509530C2 (en) | 1997-04-01 | 1997-04-01 | Surveying method and surveying apparatus comprising a radio navigation unit |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998044363A1 true WO1998044363A1 (en) | 1998-10-08 |
Family
ID=20406390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1998/000498 WO1998044363A1 (en) | 1997-04-01 | 1998-03-19 | Surveying method and surveying system comprising a radio navigation unit |
Country Status (6)
Country | Link |
---|---|
US (1) | US6175328B1 (en) |
EP (1) | EP0972210B1 (en) |
JP (1) | JP4212121B2 (en) |
DE (1) | DE69818440T2 (en) |
SE (1) | SE509530C2 (en) |
WO (1) | WO1998044363A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6381006B1 (en) | 2000-07-12 | 2002-04-30 | Spectra Precision Ab | Spatial positioning |
EP1154282A3 (en) * | 2000-05-08 | 2004-10-27 | Nokia Corporation | A method for determining the position of an object, a positioning system, a receiver and an electronic device |
FR2906361A1 (en) * | 2006-09-25 | 2008-03-28 | Atlog Sarl | Angle measurement device e.g. theodolite, orienting method for e.g. geodesy application, involves orienting theodolite along horizontal angle when angular difference is added to point measured by theodolite |
WO2008043436A1 (en) * | 2006-10-06 | 2008-04-17 | Leica Geosystems Ag | Target object used for retroflexion of optical radiation |
EP2194399A1 (en) * | 2008-12-03 | 2010-06-09 | Leica Geosystems AG | Position determination procedure and geodata measuring system |
EP2650640A1 (en) * | 2010-12-10 | 2013-10-16 | Sokkia Topcon Co., Ltd. | Surveying system |
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SE519676C2 (en) * | 2000-07-25 | 2003-03-25 | Telia Ab | Interactive positioning and monitoring system |
US6710319B2 (en) | 2001-03-08 | 2004-03-23 | Kabushiki Kaisha Topcon | System for radiating a reference laser beam and utilizing GPS units for installing an article |
JP2002310657A (en) * | 2001-04-11 | 2002-10-23 | Nikon Geotecs Co Ltd | Surveying instrument |
SE525290C2 (en) * | 2002-12-20 | 2005-01-25 | Trimble Ab | Geodetic measurement / release system and method of using the same |
US7764365B2 (en) * | 2004-07-23 | 2010-07-27 | Trimble Navigation Limited | Combination laser detector and global navigation satellite receiver system |
EP1686350A1 (en) * | 2005-01-26 | 2006-08-02 | Leica Geosystems AG | Modularly expandable geodetic total station |
WO2006099059A2 (en) * | 2005-03-10 | 2006-09-21 | Witten Technologies, Inc. | Method for correcting a 3d location measured by a tracking system assuming a vertical offset |
WO2010029439A2 (en) * | 2008-09-15 | 2010-03-18 | Uti Limited Partnership | System and methods for real time kinematic surveying using gnss and ultra wideband ranging |
KR101124272B1 (en) * | 2008-10-27 | 2012-03-27 | 이승목 | Geographical displacement sensing unit |
US9638523B2 (en) | 2010-12-10 | 2017-05-02 | Sokkia Topcon Co., Ltd. | Surveying system |
US9222771B2 (en) | 2011-10-17 | 2015-12-29 | Kla-Tencor Corp. | Acquisition of information for a construction site |
JP5598797B2 (en) * | 2011-12-27 | 2014-10-01 | 株式会社シーティーエス | Surveying equipment |
US9592912B1 (en) | 2016-03-08 | 2017-03-14 | Unmanned Innovation, Inc. | Ground control point assignment and determination system |
US10690498B2 (en) * | 2017-05-10 | 2020-06-23 | Trimble, Inc. | Automatic point layout and staking system |
KR102066240B1 (en) * | 2018-05-18 | 2020-01-14 | 김태진 | Error detecting and operation analysis apparatus of navigation aids and method the same |
US11435182B2 (en) | 2019-12-20 | 2022-09-06 | Trimble, Inc. | Laser receiver and target with lighted indicators |
EP3901576A1 (en) | 2020-04-23 | 2021-10-27 | Trimble Inc. | Laser receiver and target with lighted indicators |
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DE19635591A1 (en) * | 1995-08-31 | 1997-03-06 | Nikon Corp | Position-fixing system using GPS at measurement and reference stations |
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US5600436A (en) * | 1994-01-05 | 1997-02-04 | Caterpillar Inc. | Apparatus and system for determining terrestrial position |
US5644318A (en) * | 1996-02-02 | 1997-07-01 | Trimble Navigation Limited | SATPS dynamic surveying from a moving platform |
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-
1998
- 1998-03-19 JP JP54153098A patent/JP4212121B2/en not_active Expired - Lifetime
- 1998-03-19 US US09/402,258 patent/US6175328B1/en not_active Expired - Lifetime
- 1998-03-19 DE DE69818440T patent/DE69818440T2/en not_active Expired - Lifetime
- 1998-03-19 WO PCT/SE1998/000498 patent/WO1998044363A1/en active IP Right Grant
- 1998-03-19 EP EP98914184A patent/EP0972210B1/en not_active Expired - Lifetime
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Cited By (12)
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EP1154282A3 (en) * | 2000-05-08 | 2004-10-27 | Nokia Corporation | A method for determining the position of an object, a positioning system, a receiver and an electronic device |
US6381006B1 (en) | 2000-07-12 | 2002-04-30 | Spectra Precision Ab | Spatial positioning |
FR2906361A1 (en) * | 2006-09-25 | 2008-03-28 | Atlog Sarl | Angle measurement device e.g. theodolite, orienting method for e.g. geodesy application, involves orienting theodolite along horizontal angle when angular difference is added to point measured by theodolite |
WO2008043436A1 (en) * | 2006-10-06 | 2008-04-17 | Leica Geosystems Ag | Target object used for retroflexion of optical radiation |
US7818889B2 (en) | 2006-10-06 | 2010-10-26 | Leica Geosystems Ag | Target object used for retroreflexion of optical radiation |
EP2194399A1 (en) * | 2008-12-03 | 2010-06-09 | Leica Geosystems AG | Position determination procedure and geodata measuring system |
WO2010063545A1 (en) * | 2008-12-03 | 2010-06-10 | Leica Geosystems Ag | Position determination method and geodetic measuring system |
CN102239424A (en) * | 2008-12-03 | 2011-11-09 | 莱卡地球系统公开股份有限公司 | Position determination method and geodetic measuring system |
US9316496B2 (en) | 2008-12-03 | 2016-04-19 | Leica Geosystems Ag | Position determination method and geodetic measuring system |
EP2650640A1 (en) * | 2010-12-10 | 2013-10-16 | Sokkia Topcon Co., Ltd. | Surveying system |
EP2650640A4 (en) * | 2010-12-10 | 2014-10-22 | Sokkia Topcon Co Ltd | Surveying system |
EP2813814A1 (en) * | 2010-12-10 | 2014-12-17 | Sokkia Topcon Co., Ltd. | Surveying system |
Also Published As
Publication number | Publication date |
---|---|
DE69818440D1 (en) | 2003-10-30 |
SE9701186L (en) | 1998-10-02 |
EP0972210A1 (en) | 2000-01-19 |
DE69818440T2 (en) | 2004-07-22 |
SE9701186D0 (en) | 1997-04-01 |
EP0972210B1 (en) | 2003-09-24 |
US6175328B1 (en) | 2001-01-16 |
SE509530C2 (en) | 1999-02-08 |
JP2001505666A (en) | 2001-04-24 |
JP4212121B2 (en) | 2009-01-21 |
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