Accession Number : AD0853054

Title :   LF to VHF Shipboard Direction Finding Research.

Descriptive Note : Interim development rept. 1 Jan-31 Mar 69,

Corporate Author : SOUTHWEST RESEARCH INST SAN ANTONIO TEX

Personal Author(s) : Green,T. C. ; Sherrill,W. M.

Report Date : 31 MAR 1969

Pagination or Media Count : 54

Abstract : It is the purpose of this contract to design, develop, and evaluate prototype DF antennas, special DF techniques, and DF calibration circuits which provide practical state-of-the-art solutions to the shipboard direction finding requirements in the HF and low VHF range. Prototype DF systems and calibration techniques are to be evaluated in a realistic reradiation environment at the SwRI ship simulation site. Experimental results will be combined with fundamental theoretical analysis to provide detailed recommendations as to the optimum DF system for specific Navy DF requirements. (Author)

Descriptors :   (*DIRECTION FINDING, SHIPBOARD), LOOP ANTENNAS, RADIO INTERFEROMETERS, FERRITES, AZIMUTH, CORRECTIONS, CALIBRATION, ANTENNA RADIATION PATTERNS, SENSITIVITY

Subject Categories : Marine Engineering
      Direction Finding

Distribution Statement : APPROVED FOR PUBLIC RELEASE