GB613862A - Improvements in or relating to very short wave radio viewing apparatus - Google Patents
Improvements in or relating to very short wave radio viewing apparatusInfo
- Publication number
- GB613862A GB613862A GB5346/46A GB534646A GB613862A GB 613862 A GB613862 A GB 613862A GB 5346/46 A GB5346/46 A GB 5346/46A GB 534646 A GB534646 A GB 534646A GB 613862 A GB613862 A GB 613862A
- Authority
- GB
- United Kingdom
- Prior art keywords
- scene
- waveguide
- pick
- scanning
- aircraft
- 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
- 241001422033 Thestylus Species 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/08—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
-
- 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
613,862. Radiolocation waveguides. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 20, 1946, No. 5346. Convention date, Feb. 21, 1945. [Classes 40 (v) and 40 (vii)] In a radiolocation system for visibly presenting a scene, the received reflected radio waves are made to form a real image of the scene which is scanned by a pick-up device scanning over a predetermined path in the plane of the image, and the signals derived from the pick-up device are applied to a recorder driven in synchronism with the pick-- up device. The scene is illuminated by radio waves, either by flood-lighting or by a scanning beam, reflected waves being focussed by the mirror 10 on to a crystal detector or waveguide orifice 11. The received signals are amplified and applied to a recording stylus 18 which scans the drum 16 driven by motor 17 helically. The recording system is coupled to the receiving system by means of a pin 23 which causes the pick-up device 11 to scan horizontally once per revolution of the drum and by means of the link 26 which positions the mirror 10 in accordance with the position of the stylus 18. A representation of the scene is formed upon current sensitive paper wrapped around the drum 16. In a pulsed system, a common transmitting and receiving aerial system may be used, and also the receiver may be " gated " so that only objects within a certain range will be presented. In another embodiment for use in an aircraft, an image of the scene is focussed by a lens on to a waveguide orifice which itself scans in one dimension only, scanning in the other dimension being performed by the motion of the aircraft. Reproduction is carried out upon a sheet of sensitive paper which is moved at a speed proportional to that of the aircraft so that a map of the route covered is produced. Waveguides. Fig. 3a illustrates a waveguide joint for use in the embodiment of Fig. 1 so that the waveguide orifice 11 may be able to perform its scanning motion. Plugs 66, 67 provide " steps " which are used to match the rectangular waveguide portions to the circular portions of the joint. Slot 68 and spacing 69 act as a choke to prevent leakage from the joint.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US613862XA | 1945-02-21 | 1945-02-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB613862A true GB613862A (en) | 1948-12-03 |
Family
ID=22035451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5346/46A Expired GB613862A (en) | 1945-02-21 | 1946-02-20 | Improvements in or relating to very short wave radio viewing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB613862A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2461591A (en) * | 1982-10-15 | 2010-01-13 | Dassault Electronique | Rotary joint for the transmission of hyperfrequency waves |
-
1946
- 1946-02-20 GB GB5346/46A patent/GB613862A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2461591A (en) * | 1982-10-15 | 2010-01-13 | Dassault Electronique | Rotary joint for the transmission of hyperfrequency waves |
| GB2461591B (en) * | 1982-10-15 | 2010-06-23 | Dassault Electronique | Rotary joint for the transmission of microwaves |
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