GB327112A - Improvements in or relating to wireless signalling systems - Google Patents

Improvements in or relating to wireless signalling systems

Info

Publication number
GB327112A
GB327112A GB2758528A GB2758528A GB327112A GB 327112 A GB327112 A GB 327112A GB 2758528 A GB2758528 A GB 2758528A GB 2758528 A GB2758528 A GB 2758528A GB 327112 A GB327112 A GB 327112A
Authority
GB
United Kingdom
Prior art keywords
pointer
bearing
picture
aerial
effect
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
Application number
GB2758528A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB2758528A priority Critical patent/GB327112A/en
Priority to FR681553D priority patent/FR681553A/en
Priority to DER79187D priority patent/DE562307C/en
Publication of GB327112A publication Critical patent/GB327112A/en
Expired legal-status Critical Current

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)
  • Facsimiles In General (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

327,112. Robinson, J. Sept. 26, 1928. Directive signalling.-In a direction-finding svstem in order to minimize the effect of interference in blurring the critical indication, the required bearing is transmitted as a visual effect in the form of a scale of degrees, with or without the name of the transmitting station and an indicating pointer, by still-picture or television apparatus of known type, and a directional effect is superposed either by using. a rotating frame or other directional aerial, at the transmitting or receiving end, whereby the required bearing is visibly indicated by the suppression of a definitely orientated part of the received picture. As shown in Fig. 1, still-picture transmission apparatus 10, 12 is used to send a facsimile of a scale of degrees 11. At the receiving end, owing to the effect of the rotating-loop transmitting aerial 14, the scale 18 is shown with blank portions corresponding to the bearing of the aerial 16 relatively to the transmitter. In Fig. 2 television apparatus 26, 27, 28, of known type, is used to transmit the image of a pointer 25 rotating at a constant speed. An aerial 31 -also transmits a non-directional orientating signal at definite intervals, i.e. when contacts 33 are short-circuited by brushes 34 on the rotating pointer. At the receiving station 36, a moving image of the pointer 25 is shown on the screen 40, which may be graduated as a compass card, but the image vanishes along a definite diameter corresponding to the required bearing. Alternatively non-directional aerials may be used to give a continuous moving picture, the orientation of the pointer at the moment when the signal from the aerial 31 is received then indicating the bearing. Or the picture of the pointer may appear on the screen only along that diameter which corresponds to the true bearing. The effect of interfering signals will mar the general symmetry of the picture and is therefore readily distinguishable from the desired " bearing " indication.
GB2758528A 1928-09-26 1928-09-26 Improvements in or relating to wireless signalling systems Expired GB327112A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2758528A GB327112A (en) 1928-09-26 1928-09-26 Improvements in or relating to wireless signalling systems
FR681553D FR681553A (en) 1928-09-26 1929-09-10 Improvements to wireless signaling systems
DER79187D DE562307C (en) 1928-09-26 1929-09-12 Radio direction finding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2758528A GB327112A (en) 1928-09-26 1928-09-26 Improvements in or relating to wireless signalling systems

Publications (1)

Publication Number Publication Date
GB327112A true GB327112A (en) 1930-03-26

Family

ID=10262029

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2758528A Expired GB327112A (en) 1928-09-26 1928-09-26 Improvements in or relating to wireless signalling systems

Country Status (3)

Country Link
DE (1) DE562307C (en)
FR (1) FR681553A (en)
GB (1) GB327112A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767354C (en) * 1936-03-17 1952-07-10 Telefunken Gmbh Method for determining direction
DE763431C (en) * 1939-04-19 1951-12-03 Marconi Wireless Telegraph Co Device for wireless determination of direction
DE767535C (en) * 1940-07-20 1952-09-29 Telefunken Gmbh Application of the registration method according to patent 767354 to a rotating radio beacon, preferably working in the shortwave area
DE908747C (en) * 1941-06-06 1954-04-08 Siemens Ag Display device for rotary radio beacon

Also Published As

Publication number Publication date
DE562307C (en) 1932-10-24
FR681553A (en) 1930-05-16

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