AN EXPERIMENTAL INVESTIGATION OF HIGHWAY SURVEYING AND MAPPING CONTROL EXTENSION BY TRILATERATION AND CONVENTIONAL TRAVERSE

A CHAIN OF 16 QUADRILATERALS APPROXIMATELY 6 MILES IN LENGTH ALONG I-71 WAS USED TO EVALUATE GROUND CONTROL EXTENSION BY TRILATERATION AND CONVENTIONAL TRAVERSE. DISTANCES WERE MEASURED WITH A GEODIMETER, AND ANGLES WERE MEASURED WITH A WILD T2 THEODOLITE. A FORTRAN COMPUTER PROGRAM WAS DEVELOPED TO ADJUST THE TRILATERATION NETWORK. THE METHOD IS BASED ON A PREVIOUSLY DEVELOPED AND PUBLISHED METHOD OF TRILATERATION ADJUSTMENTS. THE TRAVERSE ADJUSTMENT WAS ACCOMPLISHED BY USING THE LEAST SQUARES METHOD. RESULTS OF THE EXPERIMENTS SHOW THAT TRILATERATION IS MORE ACCURATE THAN CONVENTIONAL TRAVERSE AND IS AT LEAST AS ECONOMICAL. THE AUTHORS RECOMMENDED THAT A TRILATERATION CHAIN OF QUADRILATERALS BE USED WHERE A DOUBLE CENTERLINE OR DOUBLE TRAVERSE IS NEEDED FOR HIGHWAY SURVEYING OR MAPPING CONTROL. THE METHODOLGY AND COMPUTER PROGRAM HAVE PERMITTED THIS METHOD TO BE USED WHEREVER ECONOMICALLY ADVANTAGEOUS. /AUTHOR/

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 15-27
  • Monograph Title: Aerial surveys and photogrammetry
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00202967
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Jun 5 1972 12:00AM