Method for determining positions of points to be measured

• US 7,647,199 B2
• Filed: 11/30/2007
• Issued: 01/12/2010
• Est. Priority Date: 09/24/2007
• Status: Active Grant

• Current Assignee: Leica Geosystems AG (Hexagon AB)
• Original Assignee: Leica Geosystems AG (Hexagon AB)
• Inventors: Mayer, Jürgen, Desmond, Matthew Gerard, Green, Alastair
• Primary Examiner(s): Lau; Tung S
• Assistant Examiner(s): SUN, XIUQIN
• Application Number:
  US11/948,751
• Publication Number:
  US 20090082992A1
• Time in Patent Office: 774 Days
• Field of Search: 702/150, 702/14, 356/611, 356/614, 356/139.03, 356/139.04, 701/208, 701/216
• US Class Current: 702/150
• CPC Class Codes: G01C 15/002 Active optical surveying means optical plumbing G01C15/105

Abstract

A position determination method for a set of new points to be surveyed, using a geodetic device and reference points whose positions in an absolute coordinate system are known. The position determination is effected by referencing the new points relative to a set of reference points and measurement of the reference points and of the new points in a relative coordinate system for referencing by the geodetic device—relative measured quantities being registered. Furthermore, the new points and the reference points are updated by successive addition in each case of the measured new points and reference points to the set of new points and set of reference points, respectively, and updating the position determination of the new points taking into account all of the respective actual reference points is effected if a specified minimum coefficient of determination for the referencing is ensured by the actual set of reference points.

Claims

1. A method for determining the position of a set of new points which are to be surveyed using a geodetic device where a set of reference points are installed on a surveying site and the positions of the reference points in an absolute coordinate system are known, the method comprising the following acts:

measuring the set of reference points and the set of new points in a relative coordinate system using the geodetic device where relative measurements of the set of reference points and the set of new points are determined;

determining absolute positions of the set of new points in the absolute coordinate system by referencing the set of new points relative to the set of the reference points;

updating the set of new points and the set of reference points in each case by;

successively adding additional measured new points to the set of new points; and

successively adding additional measured reference points to the set of reference points, respectively; and

updating the absolute positions of the entire set of new points including the successively added additional measured new points by taking into account the set of reference points including the successively added additional measured reference points.

2. The positions determination method as claimed in claim 1, wherein the measurement of the new points and of the reference points is carried out with point type overlap.

3. The position determination method as claimed in claim 1, wherein the updating the absolute positions is effected for all new points of the set of new points each time a measured point is successively added to the set of new points.

4. The position determination method as claimed in claim 1, wherein a position of the geodetic device in the absolute coordinate system is determined as a new point.

5. The position determination method as claimed in claim 1, wherein each updating of the set of reference points automatically triggers the act of updating of the absolute positions of the new points.

6. The position determination method as claimed in claim 1, wherein the updating of the position determination of the new points is triggered by a user.

7. The position determination method as claimed in claim 1, wherein the steps are effected at least partly automatically.

8. The position determination method as claimed in claim 1, wherein a sequence for the measurement of the new points and reference points by a relative position of the new points and reference points is determined from the geodetic device.

9. The position determination method as claimed in claim 8, wherein the sequence is based on azimuth angles of the new points and reference points and the sequence is determined from the geodetic device.

10. The position determination method as claimed in claim 8, wherein the sequence is based on elevation angles of the new points and the reference points and is determined from the geodetic device.

11. The position determination method as claimed in claim 8, wherein the sequence is based on elevation angles of the new points and the reference points and is determined from the geodetic device.

12. The position determination method as claimed in claim 1, wherein the effort involved in operating the geodetic device for the measurement of each of the new and the reference points for establishing a measuring series is taken into account in determining a sequence for measurement of the new points and the reference points.

13. The position determination method as claimed in claim 1, wherein the reference points are generated at least partly by a repositionable GNSS unit, the positions thereof in an absolute coordinate system being provided in each case by GNSS position determination as known positions.

14. The position determination method as claimed in claim 1, wherein the act of updating the absolute positions of the entire set of new points including the successively added additional measured new points is carried out by taking into account the entire set of reference points including the successively added additional measured reference points.

15. The position determination method as claimed in claim 1, wherein the geodetic device includes a total station or theodolite.