HIGHWAY SURVEYING AND MAPPING CONTROL EXTENSION BY TRILATERATION AND CONVENTIONAL TRAVERSE

A CHAIN OF 16 QUADRILATERALS APPROXIMATELY 6 MILES IN LENGTH ALONG INTERSTATE HIGHWAY 71 WAS USED TO EVALUATE GROUND CONTROL EXTENSION BY TRILATERATION AND CONVENTIONAL TRAVERSE. DISTANCES WERE MEASURED USING A GEODIMETER AND ANGLES WITH A WILD T2 THEODOLITE. A FORTRAN COMPUTER PROGRAM WAS DEVELOPED TO ADJUST THE TRILATERATION NET. THE METHOD IS BASED ON PREVIOUSLY DEVELOPED AND PUBLISHED METHOD OF TRILATERATION ADJUSTMENTS. THE TRAVERSE ADJUSTMENT WAS ACCOMPLISHED USING THE LEAST SQUARE METHOD. RESULTS OF THE EXPERIMENTS SHOW THE TRILATERATION IS MORE ACCURATE THAN CONVENTIONAL TRAVERSE AND IS AT LEAST AS ECONOMICAL. THE AUTHORS RECOMMEND THAT A TRILATERATION CHAIN OF QUADRILATERALS BE USED WHERE A DOUBLE CENTER LINE OR DOUBLE TRAVERSE IS NEEDED FOR HIGHWAY SURVEYING OR MAPPING CONTROL. /FHWA/

  • Corporate Authors:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590

    Ohio Department of Highways

    Columbus, OH  USA  43210
  • Authors:
    • Lee, S C
    • Belkin, A L
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00203160
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Files: TRIS, USDOT
  • Created Date: Oct 19 1970 12:00AM