GB1314199A - Primary radar - Google Patents
Primary radarInfo
- Publication number
- GB1314199A GB1314199A GB1314199DA GB1314199A GB 1314199 A GB1314199 A GB 1314199A GB 1314199D A GB1314199D A GB 1314199DA GB 1314199 A GB1314199 A GB 1314199A
- Authority
- GB
- United Kingdom
- Prior art keywords
- port
- circulator
- coupled
- switch
- rotating
- 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
-
- 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)
- Radar Systems Or Details Thereof (AREA)
Abstract
1314199 Pulse radar; aerials A C COSSOR Ltd 23 Dec 1971 [29 Dec 1970] 61650/70 Headings H4A and H4D A radar aerial system comprises rotating aerial means having two ports 5, 6, a ferrite or other circulator 4, and a single rotating H.F. connection 8. The port 5 is directly coupled to a port 1 of the circulator 4, the port 6 is coupled through a P.I.N. diode or other switch 7 to a port 2 of said circulator, and one side of the rotating connection 8 is coupled to a port 3 of said circulator. In operation, a system trigger 12 initiates a pulse from a transmitter 10 which is coupled through a TR cell 9 to the rotating connection 8 and thence via ports 3 and 1 of the circulator 4 to the aerial means port 5, which provides a standard directional pattern in elevation. The switch 7 being closed, early echo signals from short ranges are received via aerial means port 6, which provides an upwardly tilted directional pattern inelevation, consequently avoiding returns from clutter, and are coupled through the rotating connection 8 and the TR cell 9 to a receiver 11. After a short time, which is determined by a fixed or adjustable delay element 13 connected between the trigger 12 and the control terminal of the switch 7, said switch opens. The port 6 is then disconnected, and echo signals from longer ranges received via aerial means port 5, are coupled through the circulator, the rotating connection and the TR cell to the receiver 11.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB6165070 | 1970-12-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1314199A true GB1314199A (en) | 1973-04-18 |
Family
ID=10487287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1314199D Expired GB1314199A (en) | 1970-12-29 | 1970-12-29 | Primary radar |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1314199A (en) |
-
1970
- 1970-12-29 GB GB1314199D patent/GB1314199A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1309536A (en) | Doppler radar system | |
US3685050A (en) | Single antenna signal retransmission device | |
US3375516A (en) | Dual antenna system for transponder beacon devices | |
GB1137252A (en) | Radar systems | |
GB1396821A (en) | Ranging systems | |
GB1395872A (en) | Compatible split band distance measuring method and apparatus | |
GB856969A (en) | Improvements in and relating to secondary radar systems | |
GB1260446A (en) | Improvements in or relating to radio direction finders | |
US2508571A (en) | Radio echo detection apparatus | |
GB1314199A (en) | Primary radar | |
GB1175365A (en) | Improvements in Transmit-Receive Systems Comprising Electronically Scanned Antenna Arrays. | |
ES254248A1 (en) | Instantaneous threshold time control for enhancing detection probabilities in radar having clutter | |
US3958241A (en) | Chaff discrimination system | |
GB1300105A (en) | Monopulse radar apparatus | |
US3087153A (en) | Gated pulse radar system | |
GB914679A (en) | Improvements in or relating to radio altimeters | |
GB682308A (en) | Improvements in or relating to radio identification systems | |
US3184737A (en) | Radar system | |
US3805267A (en) | Airborne telemetering radar | |
GB791431A (en) | Improvements in or relating to range measuring radio pulse transmitting and receiving systems | |
US2901742A (en) | Blind landing system | |
GB1219261A (en) | Improvements in or relating to guiding systems for guided missiles | |
GB616364A (en) | Improvements in radio beacon and like equipment | |
KUSTOV et al. | Dual antenna method of suppressing reflections from underlying surface(Dual antenna method for suppressing reflections from underside of moving aircraft) | |
GB1143997A (en) | Radar systems |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |