GB9400979D0 - Radio navigation system - Google Patents

Radio navigation system

Info

Publication number
GB9400979D0
GB9400979D0 GB9400979A GB9400979A GB9400979D0 GB 9400979 D0 GB9400979 D0 GB 9400979D0 GB 9400979 A GB9400979 A GB 9400979A GB 9400979 A GB9400979 A GB 9400979A GB 9400979 D0 GB9400979 D0 GB 9400979D0
Authority
GB
United Kingdom
Prior art keywords
navigation system
radio navigation
radio
navigation
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.)
Withdrawn
Application number
GB9400979A
Other versions
GB2274953A (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.)
PHIPPS DEREK J
Original Assignee
PHIPPS DEREK J
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 GB939302498A external-priority patent/GB9302498D0/en
Application filed by PHIPPS DEREK J filed Critical PHIPPS DEREK J
Priority to GB9400979A priority Critical patent/GB2274953A/en
Publication of GB9400979D0 publication Critical patent/GB9400979D0/en
Publication of GB2274953A publication Critical patent/GB2274953A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/08—Position of single direction-finder fixed by determining direction of a plurality of spaced sources of known location
    • 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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/12—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves by co-ordinating position lines of different shape, e.g. hyperbolic, circular, elliptical or radial
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
GB9400979A 1993-02-09 1994-01-19 Navigation system incorporating screened two-loop antenna Withdrawn GB2274953A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9400979A GB2274953A (en) 1993-02-09 1994-01-19 Navigation system incorporating screened two-loop antenna

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB939302498A GB9302498D0 (en) 1993-02-09 1993-02-09 Antennas and antenna systems
GB9400979A GB2274953A (en) 1993-02-09 1994-01-19 Navigation system incorporating screened two-loop antenna

Publications (2)

Publication Number Publication Date
GB9400979D0 true GB9400979D0 (en) 1994-03-16
GB2274953A GB2274953A (en) 1994-08-10

Family

ID=26302420

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9400979A Withdrawn GB2274953A (en) 1993-02-09 1994-01-19 Navigation system incorporating screened two-loop antenna

Country Status (1)

Country Link
GB (1) GB2274953A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9541370B2 (en) 2011-09-18 2017-01-10 Elta Systems Ltd. Compact 3D direction finding and polarization resolving
US9041400B2 (en) 2011-09-18 2015-05-26 Elta Systems Ltd. Compact 3D direction finder
FR3045838B1 (en) * 2015-12-18 2020-05-22 Thales MULTI-ACCESS ANTENNA
CN107390170A (en) * 2017-08-01 2017-11-24 王书旸 The method that three-dimensional fix is carried out based on directional electromagnetic and the anglec of rotation
JP6925903B2 (en) * 2017-08-02 2021-08-25 矢崎総業株式会社 antenna
IL256639B (en) 2017-12-28 2022-09-01 Elta Systems Ltd Compact antenna device
FR3099002B1 (en) * 2019-07-15 2022-05-13 Thales Sa SPHERE ANTENNA

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB344539A (en) * 1929-12-12 1931-03-12 Marconi Wireless Telegraph Co Improvements in or relating to directional aerial systems

Also Published As

Publication number Publication date
GB2274953A (en) 1994-08-10

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)