GB424612A - Improvements in or relating to navigation aiding radio systems - Google Patents
Improvements in or relating to navigation aiding radio systemsInfo
- Publication number
- GB424612A GB424612A GB24350/34A GB2435034A GB424612A GB 424612 A GB424612 A GB 424612A GB 24350/34 A GB24350/34 A GB 24350/34A GB 2435034 A GB2435034 A GB 2435034A GB 424612 A GB424612 A GB 424612A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency
- aug
- modulated
- relating
- beat
- 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)
- Radar Systems Or Details Thereof (AREA)
Abstract
424,612. Directive wireless signalling. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Aug. 23, 1934, No. 24350. Convention date, Aug. 25, 1933. [Class 40 (v)] In an overlapping beam system for assisting navigation, the median line which indicates the course to be taken is identified not by a modulated note but by the " beat " frequency between the waves used for the two beams. This beat frequency may be audible and received on an ordinary set, or it may be supersonic and effective only on a receiver tuned to that frequency, being " secret " otherwise. The two radiated frequencies are produced by a single transmitter, modulated with a frequency half that of the desired beatfrequency. The carrier is suppressed, and the two side bends are fed separately to each of the beam aerials.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE424612X | 1933-08-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB424612A true GB424612A (en) | 1935-02-25 |
Family
ID=6476930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24350/34A Expired GB424612A (en) | 1933-08-25 | 1934-08-23 | Improvements in or relating to navigation aiding radio systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB424612A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE738898C (en) * | 1939-12-07 | 1943-10-11 | Telefunken Gmbh | Arrangement for subdividing a route for vehicles determined by a directional beam transmitter (Leitstrahlsender) |
-
1934
- 1934-08-23 GB GB24350/34A patent/GB424612A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE738898C (en) * | 1939-12-07 | 1943-10-11 | Telefunken Gmbh | Arrangement for subdividing a route for vehicles determined by a directional beam transmitter (Leitstrahlsender) |
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