GB615667A - Improvements in and relating to radio apparatus for the measurement of distance - Google Patents
Improvements in and relating to radio apparatus for the measurement of distanceInfo
- Publication number
- GB615667A GB615667A GB1135846A GB1135846A GB615667A GB 615667 A GB615667 A GB 615667A GB 1135846 A GB1135846 A GB 1135846A GB 1135846 A GB1135846 A GB 1135846A GB 615667 A GB615667 A GB 615667A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signals
- phase difference
- output
- circuit
- input
- 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)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
615,667. Phase measurements. CLEGG, J. E. April 12, 1946, No. 11358. [Class 37] [Also in Group XL (c)] A device for measuring and indicating the phase difference between two applied signals has input terminals 31 and 32. Input 31 feeds in parallel valves 29 and 30 so that similar phased signals are generated in tuned circuits 43 and 44. Signals from input 32 are also divided into two parts feeding transformers 36 and 37, but owing to the network 34, 35 the signals in these transformers are in phase quadrature. Tuned circuit 43 is connected to a bridge modulator circuit including rectifiers 45, 46 arranged so that the signals therefrom are mixed with the output of transformer 37 to give an output voltage at c, d, that is a function of the phase difference of the applied oscillations. A similar bridge circuit mixes the output of circuit 44 and transformer 37 so that its output at e, f, is also a function of the phase difference of the signals applied. If conjugate coils 57, 58 of an indicator with a full sweep pointer are connected to c, d and e, f, the currents in them will be proportional to the sine and cosine respectively of the angular phase difference between the applied signals and the pointer will take up a position indicating the angle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1135846A GB615667A (en) | 1946-04-12 | 1946-04-12 | Improvements in and relating to radio apparatus for the measurement of distance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1135846A GB615667A (en) | 1946-04-12 | 1946-04-12 | Improvements in and relating to radio apparatus for the measurement of distance |
Publications (1)
Publication Number | Publication Date |
---|---|
GB615667A true GB615667A (en) | 1949-01-10 |
Family
ID=9984785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1135846A Expired GB615667A (en) | 1946-04-12 | 1946-04-12 | Improvements in and relating to radio apparatus for the measurement of distance |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB615667A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2641754A (en) * | 1946-04-12 | 1953-06-09 | Nat Res Dev | Terrain clearance indicator |
DE1036332B (en) * | 1955-02-21 | 1958-08-14 | Collins Radio Co | Low height knife |
US2890449A (en) * | 1953-12-02 | 1959-06-09 | Itt | Radio navigation system |
US3117276A (en) * | 1960-06-28 | 1964-01-07 | Wisconsin Alumni Res Found | Thickness measuring method and apparatus employing microwaves |
-
1946
- 1946-04-12 GB GB1135846A patent/GB615667A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2641754A (en) * | 1946-04-12 | 1953-06-09 | Nat Res Dev | Terrain clearance indicator |
US2890449A (en) * | 1953-12-02 | 1959-06-09 | Itt | Radio navigation system |
DE1036332B (en) * | 1955-02-21 | 1958-08-14 | Collins Radio Co | Low height knife |
US3117276A (en) * | 1960-06-28 | 1964-01-07 | Wisconsin Alumni Res Found | Thickness measuring method and apparatus employing microwaves |
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