BURKORD® is based upon the Global Spatial Data Model (GSDM) and can be used to perform 3-D coordinate geometry, standard deviation, and error propagation computations anywhere in the world.

Click here to request a free DOS-based menu-driven prototype copy of BURKORD®. Upon receiving your request, we will send the program to you via return email in a self extracting file which can be extracted in either the DOS or Windows environment.

Example 3-D Coordinate Computations:

The example uses points which are part of the GPS network at the Oregon Institute of Technology in Klamath Falls, Oregon. The first part of the example shows header information followed by the following sections:

Define points and standard deviations put into data file by -

• geodetic coordinates of latitude/longitude/height,
• X/Y/Z geocentric coordinates.

Format of data stored in the data file -

• point number,
• geocentric coordinates,
• geocentric covariance elements,
• station (point) name.

List of coordinate positions showing -

• geocentric coordinates,
• geodetic coordinates and ellipsoid height,
• point geocentric covariance matrix,
• local point covariance matrix.

Traverse point-to-point with standard deviations by -

• geocentric coordinate differences,
• local coordinate differences,
• total station observations,
• geodetic coordinate differences.

Inverse between points to give -

• local horizontal distance
• true 3-D azimuth
• standard deviations of:
  • each point in local reference frame,
  • all coordinate differences,
  • horizontal distance,
  • azimuth.

Listing of points with respect to P.O.B. -

• assumes "master" station is without error
• gives local eastings and northings with standard deviations
• these values can be used as local coordinates in the same tangent plane
  the same way plane surveyors use assumed coordinates for a P.O.B.
• azimuths are all with respect to meridian through the P.O.B.

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© 1997-2006 by Global COGO, Inc. BURKORD® is a registered trademark of Global COGO, Inc.