GB846997A - Improvements in or relating to rotational field radio beacons - Google Patents
Improvements in or relating to rotational field radio beaconsInfo
- Publication number
- GB846997A GB846997A GB7062/58A GB706258A GB846997A GB 846997 A GB846997 A GB 846997A GB 7062/58 A GB7062/58 A GB 7062/58A GB 706258 A GB706258 A GB 706258A GB 846997 A GB846997 A GB 846997A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bearing
- aerial
- statement
- fed
- field
- 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)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radio Relay Systems (AREA)
Abstract
846,997. Aerials; radio navigation. SVENSKA AKTIEBOLAGET GASACCUMULATOR. March 5, 1958 [Sept. 4, 1957], No. 7062/58. Class 40(7). In a radio beacon which transmits periodically a bearing statement from a directional aerial system rotatable mechanically or electrically and a covering field to prevent erroneous bearings the aerial system is so fed that the azimuthal radiation displacement is zero during a bearing transmission. In one embodiment Figs. 2, 3 the speech-modulated carrier is fed to mechanicallyrotated array 49<SP>1</SP>-54<SP>1</SP> via line 38 and a loop 40 reciprocated in an insulated guide between feeders 41, 42 by wheel 48 which rotates at the product of the aerial speed and the number of bearing statements per 360 degrees. As the aerial rotates during a bearing statement its radiation direction is unchanged due to the counterrotational slewing arising from effective displacement of feed points 38<SP>1</SP>, 38<SP>11</SP> along lines 55, 56. Similar slewing arrangements are made for the complementary covering-field tone emissions. In another embodiment Fig. 8 the bearing signal is fed to rotor elements 105-110 of a commutated rotating-field fixed aerial system (see Specification 846,998). As the elements rotate the near-constant separation between them and aerial feeder stator elements 91-96 as the bearing statement ensues causes the radiation direction to remain fixed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE846997X | 1957-09-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB846997A true GB846997A (en) | 1960-09-07 |
Family
ID=20358530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7062/58A Expired GB846997A (en) | 1957-09-04 | 1958-03-05 | Improvements in or relating to rotational field radio beacons |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3138799A (en) |
| DE (1) | DE1072281B (en) |
| FR (1) | FR1205238A (en) |
| GB (1) | GB846997A (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1691011A (en) * | 1928-11-06 | A corpora | ||
| US2219016A (en) * | 1932-12-22 | 1940-10-22 | American Gas Accumulator Compa | Method and means for emitting signals with varying signal character |
| US2188649A (en) * | 1936-03-09 | 1940-01-30 | Rca Corp | Antenna |
| US2407169A (en) * | 1941-05-26 | 1946-09-03 | Hazeltine Research Inc | System for locating radiated-signal reflectors |
| US2412161A (en) * | 1941-12-01 | 1946-12-03 | Gen Electric | Transmission system |
| US2466354A (en) * | 1944-06-28 | 1949-04-05 | American Telephone & Telegraph | Directional radio system |
-
0
- DE DENDAT1072281D patent/DE1072281B/de active Pending
-
1958
- 1958-03-04 US US719139A patent/US3138799A/en not_active Expired - Lifetime
- 1958-03-05 GB GB7062/58A patent/GB846997A/en not_active Expired
- 1958-03-19 FR FR1205238D patent/FR1205238A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1072281B (en) | |
| FR1205238A (en) | 1960-02-01 |
| US3138799A (en) | 1964-06-23 |
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