Data processing: measuring – calibrating – or testing – Calibration or correction system – Position measurement
Patent
1998-04-27
1999-11-02
Barlow, John
Data processing: measuring, calibrating, or testing
Calibration or correction system
Position measurement
702 94, 702150, 33320, 342352, 701207, G01S 502
Patent
active
059787449
ABSTRACT:
A system for improving the accuracy of location coordinate determined in a survey of a chosen region, using a computer. A grid of spaced apart points is imposed on the region, and a set of survey control points is provided. A "near set" of nearest survey control points is associated with each grid point. For each grid point, a transformation T from a first (global) datum and coordinate system to a second (local) datum and coordinate system is determined that minimizes a collective difference between coordinates of each survey control point in the near set and the corresponding coordinates of that survey control point under the transformation T. For one, two or three coordinates of each grid point, a difference .DELTA. between the coordinate(s) of the grid point in the near set and the corresponding coordinate(s) of that grid point under the transformation T is computed. An interpolation function is determined that approximately matches the coordinate(s) difference .DELTA. at each grid point. The interpolation function provides a continuous datum-to-datum mapping between all points of the first and the second coordinate systems. Determination of location of each survey point may use GPS, GLONASS, modified LEO, LORAN or any other suitable location determination system.
REFERENCES:
patent: 4553164 (1985-11-01), Labb
patent: 4903216 (1990-02-01), Huss et al.
patent: 4912565 (1990-03-01), Yokota et al.
patent: 5048102 (1991-09-01), Tararine et al.
patent: 5418901 (1995-05-01), Omori et al.
patent: 5513120 (1996-04-01), Berlad
patent: 5570460 (1996-10-01), Ramanujam
patent: 5614913 (1997-03-01), Nichols et al.
patent: 5717782 (1998-02-01), Denneau, Jr.
patent: 5734348 (1998-03-01), Aoki et al.
Barlow John
Schipper John
Trimble Navigation Ltd.
Vo Hien
LandOfFree
Interpolation of survey coordinate differences does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Interpolation of survey coordinate differences, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interpolation of survey coordinate differences will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2149334