Accession Number : AD0705523

Title :   FINAL TECHNICAL REPORT.

Descriptive Note : Technical rept. 1 Jul 57-30 Jun 67,

Corporate Author : HARVARD UNIV CAMBRIDGE MASS DIV OF ENGINEERING AND APPLIED PHYSICS

Personal Author(s) : Pierce,J. A.

Report Date : APR 1970

Pagination or Media Count : 24

Abstract : The research was primarily in the area of radio wave propagation and utilization in the very low radio frequencies. Because the utility of VLF transmissions for standard frequency comparisons and for radio aids to navigation was recognized at about the beginning of this contract, much of our effort and much of the following report deals with these matters of utilization. It is believed that discovery and dissemination of facts learned under this contract has already lead to practical advances of great importance; notably the network of high precision frequency comparisons between the various standards laboratories throughout the world, and the Omega system of navigation which is just coming into operation. (Author)

Descriptors :   (*RADIO TRANSMISSION, *VERY LOW FREQUENCY), HYPERBOLIC NAVIGATION, TIME SIGNALS, PHASE MODULATION

Subject Categories : Radiofrequency Wave Propagation
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE