Accession Number:

ADA029888

Title:

Experimental Research on the Propagation of Loran-C Signals. Volume B. Test Operations.

Descriptive Note:

Technical memo.,

Corporate Author:

JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB

Report Date:

1976-08-01

Pagination or Media Count:

92.0

Abstract:

This report describes the planning and execution of test operations for an experiment conducted by The Johns Hopkins University Applied Physics Laboratory for the U.S. Air Force and the Defense Advanced Research Projects Agency to determine the validity of one facet of the theory of groundwave propagation at 100 kHz. Volume A is the summary report, Volume C describes the measurement system, and Volume D documents the data and analysis. The goal of the experiment was to determine if an analytic function could be developed for operational use that relates secondary phase factor to envelope to cycle difference so that geodetic position can be computed, accurately and in real time, from Loran-C coordinates. Field test data were collected and analyzed. They show trends that tend to support the hypothesis that the desired functional relationship exists, at least under certain conditions. Additional analysis, and perhaps tests, will be necessary to define these conditions or to prove conclusively the existence of such a relationship.

Subject Categories:

  • Radiofrequency Wave Propagation
  • Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE