The report describes the algorithms used in computing a navigation fix from data provided by receivers of the two-minute integrated doppler type designed to operate with the Navy Navigation Satellite System. The theoretical basis for calculating the change in range from the navigator to the satellite as a function of the integrated satellite doppler shift data is developed. The original receiver of the integrated doppler type, the AN/SRN-9, is briefly described in its developmental versions, designed by APL, and its production versions, built by ITT. The Scripps/ONR 702CA receiver, built by Magnavox and used for oceanographic research applications of integrated doppler navigation, is also described. The geometrical basis of the equations for obtaining a navigation fix is developed. The formatting and processing of the receiver data for the navigation solution are described preparatory to a presentation of step-by-step procedures for computing a three-variable navigation fix. Procedures for calculating satellite alerts, using data from the navigation solution, are also described. A representative FORTRAN program for obtaining a navigation fix and for calculating alerts is presented. (Author)

  • Corporate Authors:

    Johns Hopkins University, Laurel

    Applied Physics Laboratory, 11100 Johns Hopkins Road
    Laurel, MD  United States  20723-6099
  • Authors:
    • Moffett, J B
  • Publication Date: 1971-9

Media Info

  • Pagination: 286 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00025623
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: APL-TG-819-1 Rev
  • Contract Numbers: N00017-62-C-0604
  • Files: TRIS
  • Created Date: Feb 11 1972 12:00AM