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Priority to BE677607ApriorityCriticalpatent/BE677607A/xx
Publication of BE677607ApublicationCriticalpatent/BE677607A/xx
G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
G01S7/04—Display arrangements
G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays
G01S7/10—Providing two-dimensional and co-ordinated display of distance and direction
G01S7/12—Plan-position indicators, i.e. P.P.I.
G—PHYSICS
G08—SIGNALLING
G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
G08C19/00—Electric signal transmission systems
G08C19/38—Electric signal transmission systems using dynamo-electric devices
G08C19/46—Electric signal transmission systems using dynamo-electric devices of which both rotor and stator carry windings
G08C19/48—Electric signal transmission systems using dynamo-electric devices of which both rotor and stator carry windings being the type with a three-phase stator and a rotor fed by constant-frequency ac, e.g. selsyn, magslip
