CALIBRATION OF REFERENCE TIME ERRORS IN DIRECT-RANGING LORAN-C NAVIGATION

The problem of integrating the Loran-C receiver with a minicomputer and a time standard in order to achieve maximum fix accuracy in the direct-ranging mode is considered. In particular, the problem of calibrating and compensating time-dependent errors associated with the time-standard is discussed. This problem is addressed by developing a digital filter, based on estimation techniques, for processing the range measurements. Numerical results are obtained by use of covariance analysis, and include the effects of various Loran-C error sources. Implementation of the filter in a commonly-used minicomputer is also investigated, including estimates of memory and execution time requirements.

  • Supplemental Notes:
    • Institute of Navigation National Maritime , Meeting on LORAN-C, Proceedings, Hunt Valley, Maryland, Oct. 14-15, 1975.
  • Corporate Authors:

    Institute of Navigation

    815 14th Street, NW
    Washington, DC  USA  20005
  • Authors:
    • Uttam, B J
    • Palsson, T
  • Publication Date: 1975-10-14

Media Info

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Filing Info

  • Accession Number: 00152021
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Apr 27 1977 12:00AM