GB715347A - Radio range measuring systems - Google Patents

Radio range measuring systems

Info

Publication number
GB715347A
GB715347A GB39052A GB39052A GB715347A GB 715347 A GB715347 A GB 715347A GB 39052 A GB39052 A GB 39052A GB 39052 A GB39052 A GB 39052A GB 715347 A GB715347 A GB 715347A
Authority
GB
United Kingdom
Prior art keywords
station
output
oscillator
phase
switch
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
GB39052A
Inventor
James Ewen Mackintosh
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.)
Minister of Supply In Her Majesty S Government
Original Assignee
Minister of Supply In Her Majesty S Government
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 Minister of Supply In Her Majesty S Government filed Critical Minister of Supply In Her Majesty S Government
Priority to GB39052A priority Critical patent/GB715347A/en
Publication of GB715347A publication Critical patent/GB715347A/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)

Abstract

715,347. Radar; radio signalling. MINISTER OF SUPPLY. Dec. 31, 1952 [Jan. 4, 1952], No. 390/52. Classes 40 (5) and 40 (7) A range measuring system comprises at a first station (Fig. 1) a modulation signal source 1 and frequency divider 2 intermittently connected by a switch S1a to a transmitter 3 connected to energize the aerial over ganged switch S1b. At a second, station an aerial 10 is coupled over switch S2a to receiver 11 which feeds the received modulation signal FR to phase discriminator 13. A second input to the discriminator is provided by the output of stable oscillator 15 which is fed through frequency divider 16 and switch S2b. The output of the discriminator is used to control reacter 14 which in turn controls the oscillator 15 to bring it into phase with the received signal. The reactor 14 is arranged to have a long time constant and maintains the output of the oscillator 15 constant after the opening of S1a and S1b at station 1. When this occurs the switches S2 at station 2 are also moved and the output of the divider 16 is fed through preset compensating phase shifter 17 to modulate transmitter 12 now coupled to aerial 10. Signals from the second station are received at station 1 and the modulation frequency output of receiver 4 compared with the output of divider 2 in phase meter 5 to give a distance indication The carrier frequency of transmitters 3 and 12 may conveniently be the same and a normal communication transmitter-receiver used for units 11 and 12 at the second station. The oscillator 15 may be replaced by two oscillators whose outputs are mixed to give the required frequency and the reactor control applied to one of them. This arrangement gives a greater range of phase shift control. Two separate modulation frequencies may be used in the system to provide a fine and coarse indication of range. Manual operation of the switches S2 may be carried out when the received modulation ceases or a relay system may be employed changing these switches over for a predetermined period. To select and determine the range to a given one of a number of stations the latter may be made to respond only when one or more of a number of different signalling tone modulations are radiated by the first station.
GB39052A 1952-01-04 1952-01-04 Radio range measuring systems Expired GB715347A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB39052A GB715347A (en) 1952-01-04 1952-01-04 Radio range measuring systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB39052A GB715347A (en) 1952-01-04 1952-01-04 Radio range measuring systems

Publications (1)

Publication Number Publication Date
GB715347A true GB715347A (en) 1954-09-15

Family

ID=9703564

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39052A Expired GB715347A (en) 1952-01-04 1952-01-04 Radio range measuring systems

Country Status (1)

Country Link
GB (1) GB715347A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3130403A (en) * 1957-09-14 1964-04-21 Gasaccumulator Svenska Ab Apparatus for use in distance measurement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3130403A (en) * 1957-09-14 1964-04-21 Gasaccumulator Svenska Ab Apparatus for use in distance measurement

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