GB682308A - Improvements in or relating to radio identification systems - Google Patents

Improvements in or relating to radio identification systems

Info

Publication number
GB682308A
GB682308A GB1080249A GB1080249A GB682308A GB 682308 A GB682308 A GB 682308A GB 1080249 A GB1080249 A GB 1080249A GB 1080249 A GB1080249 A GB 1080249A GB 682308 A GB682308 A GB 682308A
Authority
GB
United Kingdom
Prior art keywords
radar
craft
detected
multivibrator
pulses
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
GB1080249A
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.)
Sperry Gyroscope Co Ltd
Original Assignee
Sperry Gyroscope Co Ltd
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 Sperry Gyroscope Co Ltd filed Critical Sperry Gyroscope Co Ltd
Priority to GB1080249A priority Critical patent/GB682308A/en
Priority to FR1016599D priority patent/FR1016599A/en
Publication of GB682308A publication Critical patent/GB682308A/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
    • G01S13/00—Systems 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
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/78—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted discriminating between different kinds of targets, e.g. IFF-radar, i.e. identification of friend or foe
    • 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
    • G01S13/00—Systems 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
    • G01S13/87—Combinations of radar systems, e.g. primary radar and secondary radar

Landscapes

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

Abstract

682,308. Radsolocation ; transponders. SPERRY GYROSCOPE CO., Ltd., and HANSFORD, R. F. April 20, 1950 [April 22, 1949], No. 10802/49. Drawings to Specification. Classes 40 (v) and 40 (vii). In a pulse radar system in which a response on a P.P.I. display due to a particular mobile craft is identified by modifying it by reply pulses transmitted by a responder carried by the craft, the radar pulses received at the craft are detected and applied through an amplifier, a multivibrator shaping circuit and a switch to modulate the carrier of a conventional communication transmitter operating in a different wave-band from the radar, the reply pulses being received and detected at the radar station by a communication receiver and applied through a short time constant circuit to the radar video stages where they are mixed with the detected radar echo signals. Due to the delay at the responder, the response due to the combined echo and reply pulses from the craft will be extended radially and thus readily identified. When the craft transmitter is used for communication purposes, the multivibrator output is disconnected by the switch which may also disconnect the H.T. supply from the amplifier and multivibrator.
GB1080249A 1949-04-22 1949-04-22 Improvements in or relating to radio identification systems Expired GB682308A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1080249A GB682308A (en) 1949-04-22 1949-04-22 Improvements in or relating to radio identification systems
FR1016599D FR1016599A (en) 1949-04-22 1950-04-22 Identification installation for radar systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1080249A GB682308A (en) 1949-04-22 1949-04-22 Improvements in or relating to radio identification systems

Publications (1)

Publication Number Publication Date
GB682308A true GB682308A (en) 1952-11-05

Family

ID=9974537

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1080249A Expired GB682308A (en) 1949-04-22 1949-04-22 Improvements in or relating to radio identification systems

Country Status (2)

Country Link
FR (1) FR1016599A (en)
GB (1) GB682308A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967649C (en) * 1953-08-14 1957-12-05 Telefunken Gmbh Method for highlighting individual pulse displays in the oscillographic display image of pulse radar devices
DE1098723B (en) * 1956-02-18 1961-02-02 Telefunken Gmbh Arrangement for visual display on pulse-controlled panoramic radar devices
CN112067019A (en) * 2020-09-09 2020-12-11 中国航空工业集团公司雷华电子技术研究所 Inertial navigation delay real-time estimation method under large-maneuvering condition of carrier

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2456329A1 (en) * 1979-05-08 1980-12-05 Thomson Csf DEVICE FOR TRANSMITTING RADIOPHONIC SIGNALS IN SECONDARY RADAR EQUIPMENT

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967649C (en) * 1953-08-14 1957-12-05 Telefunken Gmbh Method for highlighting individual pulse displays in the oscillographic display image of pulse radar devices
DE1098723B (en) * 1956-02-18 1961-02-02 Telefunken Gmbh Arrangement for visual display on pulse-controlled panoramic radar devices
CN112067019A (en) * 2020-09-09 2020-12-11 中国航空工业集团公司雷华电子技术研究所 Inertial navigation delay real-time estimation method under large-maneuvering condition of carrier
CN112067019B (en) * 2020-09-09 2022-06-17 中国航空工业集团公司雷华电子技术研究所 Inertial navigation delay real-time estimation method under large-maneuvering condition of carrier

Also Published As

Publication number Publication date
FR1016599A (en) 1952-11-17

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