Accession Number : AD0628771

Title :   BEARING TECHNIQUE IN THE NEAR FIELD OF A MAGNETIC TRANSMITTING DIPOLE IN THE VLF REGION.

Descriptive Note : Interim scientific rept. no. 16,

Corporate Author : INNSBRUCK UNIV (AUSTRIA)

Personal Author(s) : Nessler,N. ; Tinhofer,G.

Report Date : 15 AUG 1965

Pagination or Media Count : 17

Abstract : From the theory of the radiating magnetic dipole two methods are being derived which permit the location of such a dipole in a dissipative medium (rock). One method is based on the trend of field lines, using the angular adjustment of a range-finder antenna for the accurate location even over large distances, the measurement being made by means of earphones. The second measurement uses the intensity distribution of the magnetic field strength yielding in some cases a very simple possibility of evaluation by means of diagrams. The measuring devices and the technique of measurement are explained in detail. A location actually made in a mine is also described in detail, serving as an example of the numerous possibilities of application. (Author)

Descriptors :   (*ELECTROMAGNETIC RADIATION, VERY LOW FREQUENCY), (*ANTENNA RADIATION PATTERNS, ROCK), MAGNETIC FIELDS, DIPOLE ANTENNAS, PROPAGATION, MEASUREMENT, THEORY, AUSTRIA, GRAPHICS, WAVE PROPAGATION

Subject Categories : Electrical and Electronic Equipment
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE