AU6570674A - Antenna system for radiating doppler coded pattern using multiple beam antenna - Google Patents
Antenna system for radiating doppler coded pattern using multiple beam antennaInfo
- Publication number
- AU6570674A AU6570674A AU65706/74A AU6570674A AU6570674A AU 6570674 A AU6570674 A AU 6570674A AU 65706/74 A AU65706/74 A AU 65706/74A AU 6570674 A AU6570674 A AU 6570674A AU 6570674 A AU6570674 A AU 6570674A
- Authority
- AU
- Australia
- Prior art keywords
- antenna
- radiating
- multiple beam
- coded pattern
- antenna system
- 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
- G01S1/08—Systems for determining direction or position line
- G01S1/38—Systems for determining direction or position line using comparison of [1] the phase of the envelope of the change of frequency, due to Doppler effect, of the signal transmitted by an antenna moving, or appearing to move, in a cyclic path with [2] the phase of a reference signal, the frequency of this reference signal being synchronised with that of the cyclic movement, or apparent cyclic movement, of the antenna
- G01S1/40—Systems for determining direction or position line using comparison of [1] the phase of the envelope of the change of frequency, due to Doppler effect, of the signal transmitted by an antenna moving, or appearing to move, in a cyclic path with [2] the phase of a reference signal, the frequency of this reference signal being synchronised with that of the cyclic movement, or apparent cyclic movement, of the antenna the apparent movement of the antenna being produced by cyclic sequential energisation of fixed antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/007—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
USUS347506 | 1973-04-03 | ||
US347506A US3864679A (en) | 1973-04-03 | 1973-04-03 | Antenna system for radiating doppler coded pattern using multiple beam antenna |
Publications (2)
Publication Number | Publication Date |
---|---|
AU6570674A true AU6570674A (en) | 1975-08-21 |
AU490977B2 AU490977B2 (en) | 1975-08-21 |
Family
ID=
Also Published As
Publication number | Publication date |
---|---|
SE394542B (en) | 1977-06-27 |
FR2224886A1 (en) | 1974-10-31 |
IT1010887B (en) | 1977-01-20 |
NL7404272A (en) | 1974-10-07 |
CA1036709A (en) | 1978-08-15 |
DD112005A5 (en) | 1975-03-12 |
BR7402611D0 (en) | 1974-11-05 |
CS187413B2 (en) | 1979-01-31 |
DE2415899A1 (en) | 1974-10-31 |
JPS49131360A (en) | 1974-12-17 |
IL44497A0 (en) | 1974-06-30 |
US3864679A (en) | 1975-02-04 |
IL44497A (en) | 1976-10-31 |
GB1425143A (en) | 1976-02-18 |
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