GB1527604A - Radio homers for use in mobile craft - Google Patents
Radio homers for use in mobile craftInfo
- Publication number
- GB1527604A GB1527604A GB3440075A GB3440075A GB1527604A GB 1527604 A GB1527604 A GB 1527604A GB 3440075 A GB3440075 A GB 3440075A GB 3440075 A GB3440075 A GB 3440075A GB 1527604 A GB1527604 A GB 1527604A
- Authority
- GB
- United Kingdom
- Prior art keywords
- radio
- craft
- heading
- aug
- athwartships
- 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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/14—Systems for determining direction or deviation from predetermined direction
- G01S3/16—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived sequentially from receiving antennas or antenna systems having differently-oriented directivity characteristics or from an antenna system having periodically-varied orientation of directivity characteristic
- G01S3/22—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived sequentially from receiving antennas or antenna systems having differently-oriented directivity characteristics or from an antenna system having periodically-varied orientation of directivity characteristic derived from different combinations of signals from separate antennas, e.g. comparing sum with difference
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
1527604 Radio direction finding C E COOPER 3 Aug 1976 [19 Aug 1975] 34400/75 Heading H4D A radio homer, having a pair of antennas 10 and 11 each mounted on a craft athwartships at a predetermined spacing, includes a pair of feeder line sections 12, 13 each connected to a respective antenna and mounted on a printed circuit board 14 in close proximity to provide quadrature coupling between the two lines. The system is thus arranged to provide a cardioid directional pattern having a null in the athwartships direction which is reversed by alternating the connections made in electronic switch 15 whereby the radiation pattern in the axial direction of heading of the craft is the same for both alternating cycles. Modulator 18 operates at an audio frequency to operate switch 15 whereby a tone may be produced at speaker 19 for off axis receiving directions, or the bearing may be measured by phase detector 20.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3440075A GB1527604A (en) | 1976-08-03 | 1976-08-03 | Radio homers for use in mobile craft |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3440075A GB1527604A (en) | 1976-08-03 | 1976-08-03 | Radio homers for use in mobile craft |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1527604A true GB1527604A (en) | 1978-10-04 |
Family
ID=10365186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3440075A Expired GB1527604A (en) | 1976-08-03 | 1976-08-03 | Radio homers for use in mobile craft |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1527604A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990008060A1 (en) * | 1989-01-21 | 1990-07-26 | Searchrite Limited | Emergency rescue system |
-
1976
- 1976-08-03 GB GB3440075A patent/GB1527604A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990008060A1 (en) * | 1989-01-21 | 1990-07-26 | Searchrite Limited | Emergency rescue system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19920803 |