Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Patent
1995-11-30
1998-06-30
Zanelli, Michael
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
701213, 342357, 342457, G01S 502
Patent
active
057748268
ABSTRACT:
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,
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Schipper John
Trimble Navigation Limited
Zanelli Michael
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