05774826 is referenced by 26 patents and cites 45 patents.

Method and apparatus for optimally transforming location coordinates from a global system GC1 of survey coordinates to a local system LC1 of coordinates in a location survey. Linear translation transformations T.sub.G1 and T.sub.L1 are determined that translate the GC1 coordinates and the LC1 coordinates new coordinates in coordinate systems LC1' and GC2 having a corresponding origin. A rotation transformation R(.phi.,.theta.), having a selected azimuthal rotation angle .phi. and a selected polar rotation angle .theta., that transforms the coordinate system LC1' into another coordinate system LC2 so that a coordinate plane or coordinate axes in LC2 are aligned with a coordinate plane or coordinate axes in GC2. An optimized invertible transformation T.sub.LC2,GC2 is found that minimizes a selected functional and carries GC2 into LC2. The optimal transformation of GC1 into LC1,

Title
Optimization of survey coordinate transformations
Application Number
8/565589
Publication Number
5774826
Application Date
November 30, 1995
Publication Date
June 30, 1998
Inventor
Kenneth W McBride
Los Altos
CA, US
Agent
John Schipper
Assignee
Trimble Navigation
CA, US
IPC
G01S 5/02
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