作者：
sHERRILL, WmGREEN, TCTRAVERs, DNWilliam M. Sherrill is Manager
Intercept and Direction Finding Research in the Department of Applied Electromagnetics at Southwest Research Institute San Antonio. He received his M.S. in Physics from Rice University in 1959 and his bachelor degrees in Physics and Mathematics from the University of Texas in 1957. Since joining the staff of Southwest Research Institute in 1959 he has been engaged in Naval shipboard radio direction finding research concentrating on advanced techniques of direction finding using multichannel receivers fixed antennas and the application of digital logic and computation in DF system control. He is a member of the Institute of Electrical and Electronics Engineers IEEE Professional Group on Antennas and Propagation American Astronomical Society and the Scientific Research Society of America. Terry C. Green is a Senior Research Engineer in the Department of Applied Electromagnetics at Southwest Research Institute
San Antonio. He took the B.S. in Electrical Engineering from the University of Texas in 1958 and served as a commissioned officer in the U. S. Air Force from 1958 to 1962. His duties as a USAF officer included experience in military search and tracking radar and electrical support equipment design for high performance fighter aircraft. In 1962 he joined the staff of Southwest Research Institute and has been engaged in high frequency and very high frequency radio direction finding techniques for surface ship and submarine application. He is a member of the IEEE Professional Group on Antennas and Propagation and Sigma Pi Sigma. Douglas N. Travers is Director of the Department of Applied Electromagnetics at Southwest Research Institute
San Antonio. He obtained his B.E. in Electrical Engineering from Johns Hopkins University in 1951 and joined the staff of Southwest Research Institute in 1951. He is the inventor of two antenna systems for high frequency direction finding designed for shipboard application and for the past 15 years has been engaged in direction finding theor
This report summarizes the practical requirements for siting radio direction finders operating in the 3 to 30 mc range and is intended primarily for the use of personnel responsible for site selection and DF antenna i...
This report summarizes the practical requirements for siting radio direction finders operating in the 3 to 30 mc range and is intended primarily for the use of personnel responsible for site selection and DF antenna installation on Naval ships. The effects of reradiation from the ship'ssuperstructure on direction finder performance are described. By the use of specific examples of shipboard installations, the merits of varioussiting comprom.s.s are discussed.
作者：
sHERRILL, WmTHE AUTHOR: is Manager
Intercept and Direction Finding Research in the Department of Applied Electromagnetics at Southwest Research Institute San Antonio. He received his M.S. in Physics from Rice University in 1959 and his bachelor degrees in Physics and Mathematics from the University of Texas in 1957. Since joining the staff of Southwest Research Institute in 1959 he has been engaged in Naval shipboard radio direction finding research concentrating on advanced techniques of direction finding using multichannel receivers fixed antennas and the application of digital logic and computation in DF system control. He is a member of the Institute of Electrical and Electronics Engineers IEEE Professional Group on Antennas and Propagation American Astronomical Society and the Scientific Research Society of America.
shipboard radio direction finder calibration studies were begun before World War II using the simple loop DF antenna. A number of procedures and formats for shipboard calibration are reviewed, and automatic calibrator...
shipboard radio direction finder calibration studies were begun before World War II using the simple loop DF antenna. A number of procedures and formats for shipboard calibration are reviewed, and automatic calibrator equipments are described which reduce the effort required for a DF installation. Fundamental data on the contribution of ship superstructure elements to calibration curves have been obtained wing a full-scale destroyer superstructure mock-up. Comparison of the simulated ship to actual shipboard calibration curvesshows excellent ship DF performance simulation. Recent single-valued calibration curve analysis hasshown that corrected bearings can be obtained with in +5° precision. significant improvements in DF operational performance can be provided with the use of automatic computer correction techniques.
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