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  United States  20005
• Authors:
  • Uttam, B J
  • Palsson, T
• Publication Date: 1975-10-14

Media Info

• Features: References;
• Pagination: p. 73-80
• Serial:
  • Publication of: Institute of Transportation Engineers, Inc
  • Publisher: Institute of Transportation Engineers (ITE)

Subject/Index Terms

• TRT Terms: Electronic navigation; Loran; Loran C; Navigation computers; Radio navigation
• Old TRIS Terms: Computer aided navigation; Loran navigation
• Subject Areas: Marine Transportation; Operations and Traffic Management;

Filing Info

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