Compass Cave Survey Software Logo - Bats, Compass and Night Sky
Custom Search
 
 Sponsored Links

 

COMPASS For Windows
• Compass Tour
• Other New Features
• Cartography Tools
• Live 3D Cave Images
• On-line Help (New)
• Written Description
• Revision History: 99-21
• Testimonial Letters
• Contact Author
Getting COMPASS
• Getting Compass
•Compass On A CD.
• Previous Versions  (New)
Download/Install Issues
• Installation Instructions
• Antivirus Issues
• Authenticating Files
• False Positives
Registration Information
• Credit Card Reg.
• Reg. Info/Forms
• Printable Reg. Form
• 3rd Party Reg. Form
Auxiliary Tools/Information
• Cave Data
• 3D Glasses
• ESRI/ArcView Tools
Tutorials - (New)
• Inkscape Tips and Tricks
• Radio Locations
• Magnetic Anomalies
• Installing Under Win8
• Compass on Mac/Linux
• Google Earth Overlay
• Declination/Convergence
• Cartography Tools
• Sketch Editor.
• SVG Export
• Inkscape SVG Maps
• Illustrator SVG Maps
• SVG Round Tripping
• Adopting SVG Maps
• Complex Plot Tutorials
• Trouble Shoot CaveX
• Exporting HPGL
• Canvas Digital Map 
• ArcView/ESRI
• Italian Tutorial
• Using the Compass CD
• DEM Tutorial
Links
• Cave Related Links
• User's Pages
• User's Group
• User Questions
Documents/White Papers
• Compass File Formats
• ArcView/ESRI
• Finding Blunders
• Finding Loops
• Loop Closure
• Least Squares Papers
• Least Squares Issues
• Passage Modeling
• Survey Blunders
• J. Halleck- On Loops
• History/Philosophy
• SEF File Format (1992)
• About The Author
COMPASS For DOS
• DOS Compass Demos
• DOS Compass Features
• Magazine Review
MISC.
• Betas
• Other Products

 

Schmidt and Schelleng

One of the first articles ever written about using least squares to close cave survey loops appeared in the NSS Bulletin in 1970. It was titled "The Application of the Method of Least Squares to the Closing of Multiply-Connected Loops in Cave or Geological Surveys," and was written by V.A. Schmidt and J. H. Schelleng.

The concepts presented in the article has been used as the basis for loop closers for several different cave survey programs. Since the article has been out of print for a long time and it is virtually impossible to find anywhere on the internet, I've scanned my copy and posted it here:

 
 Sponsored Links
Sponsored Links
 Sponsored Links
 Sponsored Links

<< Home

Custom Search