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GB507754A - Improvements in or relating to wireless systems employing pulses - Google Patents

Improvements in or relating to wireless systems employing pulses

Info

Publication number
GB507754A
GB507754A GB31495/37A GB3149537A GB507754A GB 507754 A GB507754 A GB 507754A GB 31495/37 A GB31495/37 A GB 31495/37A GB 3149537 A GB3149537 A GB 3149537A GB 507754 A GB507754 A GB 507754A
Authority
GB
United Kingdom
Prior art keywords
pulses
aerial
receiver
main
gain
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
GB31495/37A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB31495/37A priority Critical patent/GB507754A/en
Priority to US240602A priority patent/US2225524A/en
Publication of GB507754A publication Critical patent/GB507754A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • 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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

507,754. Location by reflection of electromagnetic waves. PERCIVAL, W. S. Nov. 16, 1937, No. 31495. Drawings to Specification. [Class 37] [Also in Group XL] The location of an object, e.g. an aeroplane, which reflects pulses of electromagnetic radiation is obtained by determining the direction of the reflected pulses at a main receiver connected to a directional aerial. The directivity of the receiver system is sharpened by means of an auxiliary receiver connected to an aerial responsive to all directions except those making a small angle with the directive axis of the main aerial, the gain of the main receiver being automatically reduced during the reception of pulses by the auxiliary receiver. This reduction in gain is effected by the means and circuits described in Specifications 467,263 and 468,994, [both in Group XL]. In the Provisional Specification it is stated that obstacles at sea may be located by applying short pulses to the water and observing the direction of the reflected pulses.
GB31495/37A 1937-11-16 1937-11-16 Improvements in or relating to wireless systems employing pulses Expired GB507754A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB31495/37A GB507754A (en) 1937-11-16 1937-11-16 Improvements in or relating to wireless systems employing pulses
US240602A US2225524A (en) 1937-11-16 1938-11-16 Directional wireless system employing pulses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB31495/37A GB507754A (en) 1937-11-16 1937-11-16 Improvements in or relating to wireless systems employing pulses

Publications (1)

Publication Number Publication Date
GB507754A true GB507754A (en) 1939-06-16

Family

ID=10323926

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31495/37A Expired GB507754A (en) 1937-11-16 1937-11-16 Improvements in or relating to wireless systems employing pulses

Country Status (2)

Country Link
US (1) US2225524A (en)
GB (1) GB507754A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1237187B (en) * 1960-10-10 1967-03-23 Csf Impulse radar receiver with two channels for eliminating unwanted received signals

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433681A (en) * 1939-12-04 1947-12-30 Emi Ltd Radio reflection direction and distance determining system
NL66797C (en) * 1940-02-03
USRE23440E (en) * 1941-01-17 1951-12-18 Interference reducing radio
US2517549A (en) * 1941-03-14 1950-08-08 Int Standard Electric Corp Pulse radar system for detecting moving objects
US2487995A (en) * 1941-05-26 1949-11-15 Samuel M Tucker Pulse echo receiver with regenerative feedback
US3296615A (en) * 1942-01-19 1967-01-03 Robert M Page Identification and recognition system
US2842763A (en) * 1942-03-12 1958-07-08 Sperry Rand Corp Pulse receiving systems
US2435960A (en) * 1942-09-02 1948-02-17 Gen Electric Radio detecting and range finding system
US2480171A (en) * 1943-02-18 1949-08-30 Sperry Corp Pulse receiver system for improved target tracking
US2440289A (en) * 1943-02-18 1948-04-27 Sperry Corp Automatic volume control for pulse systems
US2466959A (en) * 1944-09-30 1949-04-12 Philco Corp Radio receiver noise discriminating circuit
US2543068A (en) * 1945-07-14 1951-02-27 Seddon John Carl Radio impulse receiver
US2654835A (en) * 1950-01-30 1953-10-06 Lightning & Transients Res Ins Apparatus for static pulse rejection
US2761060A (en) * 1952-08-01 1956-08-28 Rca Corp Auto alarm systems
US3725935A (en) * 1967-03-29 1973-04-03 Us Navy Leading edge discriminator circuit
US4308621A (en) * 1978-09-01 1981-12-29 Mendelson Jerry M Radio interference bucker apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1237187B (en) * 1960-10-10 1967-03-23 Csf Impulse radar receiver with two channels for eliminating unwanted received signals

Also Published As

Publication number Publication date
US2225524A (en) 1940-12-17

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