GB591130A - Improvements in or relating to wireless systems - Google Patents

Improvements in or relating to wireless systems

Info

Publication number
GB591130A
GB591130A GB2513336A GB2513336A GB591130A GB 591130 A GB591130 A GB 591130A GB 2513336 A GB2513336 A GB 2513336A GB 2513336 A GB2513336 A GB 2513336A GB 591130 A GB591130 A GB 591130A
Authority
GB
United Kingdom
Prior art keywords
station
locating
signal
target
signals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2513336A
Original Assignee
Robert Alexander Watson Watt
Filing date
Publication date
Application filed by Robert Alexander Watson Watt filed Critical Robert Alexander Watson Watt
Publication of GB591130A publication Critical patent/GB591130A/en
Application status is Expired legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems

Abstract

591,130. Radiolocation. WATT, R. A. W. Sept. 15, 1938, No. 25133. [Class 40 (v)] A cathode-ray tube is used for the measurement of the time interval between the emission of a radio signal at the locating-station and the receipt of a re-radiated signal .from the target or object to be located. The target carries a receiver responsive to signals, e;g. pulses, from the locating-station, and a transmitter for emitting signals on the same, a related, or an unrelated radio frequency and stimulated by the receipt of a signal. The signal from the locating station may be a single-pulse or a sequence of pulses of regular or irregular recurrence frequency. Means may be provided for restricting the solid angle utilised by the radiation emitted by the sender or accepted by the receiver at the locating-station ; and the direction of the target may be ascertained by measurement of angles of azimuth and altitude, e.g. as described in. Specification 252,263, [Class 40 (v)]. The signals from either station may have a special form for restricted response or for identification. The CR tube at the locating station indicates on a calibrated time scale both the emitter pulse or signal and the secondary pulse or signal from the target. The time base may be released by the emitted pulse and may be synchronized to a series of recurrent pulses. The receiver of the re-radiated signals is preferably at a short distance from the sender of the locating- station.
GB2513336A 1936-09-15 Improvements in or relating to wireless systems Expired GB591130A (en)

Publications (1)

Publication Number Publication Date
GB591130A true GB591130A (en) 1938-05-24

Family

ID=1738950

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2513336A Expired GB591130A (en) 1936-09-15 Improvements in or relating to wireless systems

Country Status (1)

Country Link
GB (1) GB591130A (en)

Similar Documents

Publication Publication Date Title
US2433804A (en) Frequency-modulated pulse radio locating system
US2403527A (en) Pulse-echo distance indicator
US3981010A (en) Object locating system
US4197536A (en) Airport surface identification and control system
CA1041639A (en) Distance measuring using a chirped fm/pulse compression interrogator responder system
US2446244A (en) Pulse-echo system
US4179695A (en) System for identification of aircraft on airport surface pathways
US2453970A (en) Recognition system for pulse echo radio locators
US2400796A (en) Signal apparatus
US2408048A (en) Radio direction method and system
US2134716A (en) Measuring speed and distance by radiant energy
US5506590A (en) Pilot warning system
US3697876A (en) Antenna self-test systems
US4315609A (en) Target locating and missile guidance system
US3251057A (en) Air-turbulence detection system
US7616149B2 (en) Methods and apparatus for radar time sensor
US1924156A (en) Means and method of measuring distance
US2426218A (en) Instrument navigation system
US2409462A (en) Radio gunfire control
US3792472A (en) Warning indicator to alert aircraft pilot to presence and bearing of other aircraft
US2459811A (en) Radio identifying system
US2538028A (en) Automatic gain-control system
US4828382A (en) Passive radio altimeter
US2418143A (en) Signal comparison system
GB981103A (en) Improvements in or relating to direction-finding equipment