GB1188403A - Improvements in or relating to Secondary Radar Installations - Google Patents

Improvements in or relating to Secondary Radar Installations

Info

Publication number
GB1188403A
GB1188403A GB23201/67A GB2320167A GB1188403A GB 1188403 A GB1188403 A GB 1188403A GB 23201/67 A GB23201/67 A GB 23201/67A GB 2320167 A GB2320167 A GB 2320167A GB 1188403 A GB1188403 A GB 1188403A
Authority
GB
United Kingdom
Prior art keywords
antenna
phase
minimum
interrogating
lobe
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
GB23201/67A
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.)
Telefunken Patentverwertungs GmbH
Original Assignee
Telefunken Patentverwertungs GmbH
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 Telefunken Patentverwertungs GmbH filed Critical Telefunken Patentverwertungs GmbH
Publication of GB1188403A publication Critical patent/GB1188403A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
    • 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
    • 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
    • G01S13/762—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted with special measures concerning the radiation pattern, e.g. S.L.S.
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems

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)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

1,188,403. Secondary radar; aerial. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 18 May, 1967 [28 May, 1966], No. 23201/67. Headings H4A and H4D. The Specification describes a secondary radar installation including side lobe suppression means including a control antenna system having a cordioid polar diagram 6, Fig. 2 with a minimum aligned with the direction of main lobe 5 of the interrogating antenna. The control antenna system is mounted at the side of and rotates with, the interrogating antenna 2, Fig. 5, and comprises an omnidirectional antenna 7<SP>1</SP> and a directional antenna 14 having its main lobe aligned with that of antenna 2. A pulse generator 8 feeds the pulse P 2 , (pulses P 1 and P 3 being transmitted by antenna 2, and the three being received as shown in Fig. 4 by an aircraft in the main lobe 57) to antenna 7<SP>1</SP> directly and to antenna 14 via phase shifter 9 and attenuator 10. Phase shifter 9 is adjusted until the antennae 7<SP>1</SP> and 14 are fed in phase opposition, to give the derived minimum, and attenuator 10 is adjusted to give the desired depth of the minimum. In the arrangement of Fig. 7 the interrogating antenna 2<SP>1</SP> is formed of two series of log-periodic dipoles alternately fed in phase and in counter phase thereby producing sum and difference polar diagrams and synthesizing an interrogation beam with a sharpened lobe. Omnidirectional antenna 7<SP>1</SP> may comprise a vertical dipole, Fig. 6 formed from conductive cylinders 18 and 19 mutually insulated by sleeve 20 and making respective electrical contact with the outer 16 and inner 17 conductors of a coaxial feed cable. A radome 23 and conductive base plate 15 are also provided.
GB23201/67A 1966-05-28 1967-05-18 Improvements in or relating to Secondary Radar Installations Expired GB1188403A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET31264A DE1273619B (en) 1966-05-28 1966-05-28 Antenna system for a secondary radar system

Publications (1)

Publication Number Publication Date
GB1188403A true GB1188403A (en) 1970-04-15

Family

ID=7556189

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23201/67A Expired GB1188403A (en) 1966-05-28 1967-05-18 Improvements in or relating to Secondary Radar Installations

Country Status (3)

Country Link
US (1) US3427621A (en)
DE (1) DE1273619B (en)
GB (1) GB1188403A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2434924A1 (en) * 1973-09-07 1975-04-17 Thomson Csf ANTENNA SYSTEM FOR A PRIMARY AND SECONDARY RADAR
DE2540786A1 (en) * 1974-09-13 1976-04-01 Thomson Csf ANTENNA FOR A PRIMARY AND A SECONDARY RADAR

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1957303C3 (en) * 1969-11-14 1974-03-07 Siemens Ag, 1000 Berlin U. 8000 Muenchen Secondary radar interrogation-response system with additional antenna to suppress sidelobe interrogation
FR2367288A1 (en) * 1976-10-05 1978-05-05 Thomson Csf DEVICE FOR ELIMINATION OF ECHOES RECEIVED IN THE SECONDARY LOBES OF AN ANTENNA OF AN ELECTROMAGNETIC DETECTION SYSTEM, AND SYSTEM INCLUDING SUCH A DEVICE
GB2050744B (en) * 1979-06-05 1983-04-20 Marconi Co Ltd Secondary surveillance radar
DE2925104C2 (en) * 1979-06-21 1984-06-20 Siemens AG, 1000 Berlin und 8000 München Segment (pillbox) radar antenna with integrated IFF antenna
GB2057808A (en) * 1979-08-23 1981-04-01 Marconi Co Ltd Secondary surveillance radar
US4266226A (en) * 1979-09-12 1981-05-05 Cubic Corporation Sidelobe discriminator
GB2089133A (en) * 1980-12-03 1982-06-16 Marconi Co Ltd Secondary radar antenna
DE3406083A1 (en) * 1984-02-20 1985-08-22 Siemens AG, 1000 Berlin und 8000 München WIRELESS WORKING SIGNAL TRANSMISSION SYSTEM
GB8614408D0 (en) * 1986-06-13 1986-06-13 Cossor Electronics Ltd Aircraft-collision warning system
DE3941199B3 (en) * 1989-12-14 2013-12-05 Lfk-Lenkflugkörpersysteme Gmbh Directional antenna array
US8072369B2 (en) * 2009-11-13 2011-12-06 Bae Systems Information And Electronic Systems Integration Inc. System and method for interrogating a target using polarized waves
FR2965063B1 (en) * 2010-09-21 2012-10-12 Thales Sa METHOD FOR EXTENDING THE TIME OF ILLUMINATION OF TARGETS BY SECONDARY RADAR
EP3446148B1 (en) * 2016-04-20 2023-10-18 Saab Ab Method and system for operating an iff/ssr antenna

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966675A (en) * 1957-10-23 1960-12-27 Stewart Warner Corp Radar beacon system with side lobe suppression
BE622184A (en) * 1961-09-06

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2434924A1 (en) * 1973-09-07 1975-04-17 Thomson Csf ANTENNA SYSTEM FOR A PRIMARY AND SECONDARY RADAR
DE2540786A1 (en) * 1974-09-13 1976-04-01 Thomson Csf ANTENNA FOR A PRIMARY AND A SECONDARY RADAR

Also Published As

Publication number Publication date
DE1273619B (en) 1968-07-25
US3427621A (en) 1969-02-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]