A NONROTAT1NG SPACED LOOP DIRECTION FINDING SYSTEM INTERIM DEVELOPMENT REPORT FOR DIRECTION FINDER RADIO, SHIPBOARD SITING AND DESIGN, STUDY AND DEVELOPMENT

摘要

A description and performance characteristics including bearing accuracy and system sensitivity are given for the laboratory version of a nonrotating spaced loop D/F system. Methods contemplated for optimizing the system, including the use of antenna multicouplers, quadrature hybrids, and voltage variable inductors are discussed.nSome AGC, frequency tuning, and channel matching requirements for the application of the twin channel receiver to a D/F intercept system are briefly reviewed.