GB1333804A - Radio-navigation station - Google Patents

Radio-navigation station

Info

Publication number
GB1333804A
GB1333804A GB3223471A GB3223471A GB1333804A GB 1333804 A GB1333804 A GB 1333804A GB 3223471 A GB3223471 A GB 3223471A GB 3223471 A GB3223471 A GB 3223471A GB 1333804 A GB1333804 A GB 1333804A
Authority
GB
United Kingdom
Prior art keywords
aerial
duration
frequency
pulses
series
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
GB3223471A
Other languages
English (en)
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.)
Thales SA
Original Assignee
Thomson CSF SA
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
Priority claimed from FR7026433A external-priority patent/FR2108146B1/fr
Priority claimed from FR7026432A external-priority patent/FR2112029B1/fr
Priority claimed from FR7117979A external-priority patent/FR2137312B2/fr
Priority claimed from FR7117978A external-priority patent/FR2135115B2/fr
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Publication of GB1333804A publication Critical patent/GB1333804A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0822—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection according to predefined selection scheme
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H01Q21/26—Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre
    • 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
    • H01Q3/24—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 orientation by switching energy from one active radiating element to another, e.g. for beam switching

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radar Systems Or Details Thereof (AREA)
GB3223471A 1970-07-17 1971-07-08 Radio-navigation station Expired GB1333804A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR7026433A FR2108146B1 (enrdf_load_stackoverflow) 1970-07-17 1970-07-17
FR7026432A FR2112029B1 (enrdf_load_stackoverflow) 1970-07-17 1970-07-17
FR7117979A FR2137312B2 (enrdf_load_stackoverflow) 1970-07-17 1971-05-18
FR7117978A FR2135115B2 (enrdf_load_stackoverflow) 1970-07-17 1971-05-18

Publications (1)

Publication Number Publication Date
GB1333804A true GB1333804A (en) 1973-10-17

Family

ID=27446069

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3223471A Expired GB1333804A (en) 1970-07-17 1971-07-08 Radio-navigation station

Country Status (10)

Country Link
US (1) US3747101A (enrdf_load_stackoverflow)
JP (1) JPS5316677B1 (enrdf_load_stackoverflow)
AU (1) AU457255B2 (enrdf_load_stackoverflow)
BE (1) BE769039A (enrdf_load_stackoverflow)
CA (1) CA938354A (enrdf_load_stackoverflow)
DE (1) DE2135737C2 (enrdf_load_stackoverflow)
GB (1) GB1333804A (enrdf_load_stackoverflow)
LU (1) LU63543A1 (enrdf_load_stackoverflow)
NL (1) NL172187C (enrdf_load_stackoverflow)
NO (1) NO131692C (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5559756U (enrdf_load_stackoverflow) * 1978-10-20 1980-04-23
JPH01141846U (enrdf_load_stackoverflow) * 1988-03-25 1989-09-28

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2994081A (en) * 1953-03-06 1961-07-25 Edward C Jordan Radio direction finder
DE1123000B (de) * 1958-07-16 1962-02-01 Standard Elektrik Lorenz Ag Anordnung zur drahtlosen Richtungsbestimmung auf Grund des Dopplereffektes

Also Published As

Publication number Publication date
LU63543A1 (enrdf_load_stackoverflow) 1971-11-16
DE2135737C2 (de) 1982-09-09
BE769039A (fr) 1971-11-03
DE2135737A1 (de) 1972-01-20
US3747101A (en) 1973-07-17
JPS5316677B1 (enrdf_load_stackoverflow) 1978-06-02
AU457255B2 (en) 1975-01-23
NO131692C (enrdf_load_stackoverflow) 1975-07-09
CA938354A (en) 1973-12-11
AU3113571A (en) 1973-01-18
NL7109881A (enrdf_load_stackoverflow) 1972-01-19
NO131692B (enrdf_load_stackoverflow) 1975-04-01
NL172187C (nl) 1983-07-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee