This report describes a project begun in January 1989 and completed December 1990, with the primary objective of obtaining sufficiently accurate horizontal and vertical control by using Global Positioning System (GPS) for highway applications. The ISU research group studied the operations of the Ashtech GPS receiver in static, pseudo-static, kinematic, and pseudo-kinematic modes. By using the Electronic Distance Measuring Instrument (EDMI) Calibration Baseline at ISU, the GPS receiver was tested for distance measurement accuracy. It was found that GPS measurements differed from the baseline distance by about 5.3 mm. Four projects were undertaken to further evaluate and improve the horizontal as well as the vertical accuracies of the GPS receiver -- (1) The Campus Project: with all points concentrated within a one-mile radius; (2) The Des Moines Project: a typical DOT project with all the points within a five-mile radius; (3) The Iowa Project: with all points within a 100-mile radius in the state of Iowa; and (4) The Mustang Project: an extension of the Iowa project, including a typical DOT project of about 10 miles within the inner 30 mile radius of the Iowa project.

  • Record URL:
  • Corporate Authors:

    Engineering Research Institute

    Iowa State University, 104 Marston Hall
    Ames, IA  United States  50010
  • Authors:
    • Baudiman, S
    • Byrne, M A
    • Erck, E S
    • Jeyapalan, K
    • Stein, M A
  • Publication Date: 1991-2

Media Info

  • Features: Figures; Tables;
  • Pagination: 209 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00605504
  • Record Type: Publication
  • Report/Paper Numbers: Iowa DOT HR-316, ERI 3131, ISU-ERI-Ames-91208
  • Files: TRIS
  • Created Date: Mar 31 1991 12:00AM