GB1188403A - Improvements in or relating to Secondary Radar Installations - Google Patents
Improvements in or relating to Secondary Radar InstallationsInfo
- 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
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.
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)
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)
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)
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 |
-
1966
- 1966-05-28 DE DET31264A patent/DE1273619B/en not_active Withdrawn
-
1967
- 1967-04-24 US US633042A patent/US3427621A/en not_active Expired - Lifetime
- 1967-05-18 GB GB23201/67A patent/GB1188403A/en not_active Expired
Cited By (2)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1188403A (en) | Improvements in or relating to Secondary Radar Installations | |
US2419205A (en) | Directive antenna system | |
GB1186194A (en) | Radar System. | |
GB2360134B (en) | Dielectric resonator antenna array with steerable elements | |
GB638020A (en) | Antenna | |
US3325816A (en) | Sidelobe suppressing antenna system comprising directional coupler and phase controlmeans for beam shaping | |
GB680512A (en) | Antenna assembly | |
US2866194A (en) | Omnidirectional beacon antenna | |
GB1026112A (en) | Antenna system | |
US2573914A (en) | Antenna system | |
GB1338753A (en) | Multimode antenna | |
US2217321A (en) | Beam antenna | |
GB1002843A (en) | A linear array antenna | |
CN209766655U (en) | Novel satellite array antenna based on planar phased array | |
GB1106824A (en) | Antenna system, such as for use on space craft and the like | |
US4185284A (en) | Ground station for the DME distance measuring system | |
US2688081A (en) | Antenna system | |
US2449999A (en) | Antenna system for defining glide paths | |
US2270130A (en) | Directive antenna system | |
GB983458A (en) | A surface and leaky wave antenna | |
GB773297A (en) | Suppression of vertically polarized radiation from an omni-directional range antenna system | |
GB1500162A (en) | Rotating radiation pattern compound aerial | |
US2810127A (en) | Turnstile antenna and feed system therefor | |
EP0053512A1 (en) | Secondary radar antenna | |
GB1011303A (en) | Improvements in or relating to antenna arrays |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] |