GB581982A - Improvements relating to electrical apparatus for the measurement of distances by the reflection of electromagnetic waves - Google Patents

Improvements relating to electrical apparatus for the measurement of distances by the reflection of electromagnetic waves

Info

Publication number
GB581982A
GB581982A GB1855742A GB1855742A GB581982A GB 581982 A GB581982 A GB 581982A GB 1855742 A GB1855742 A GB 1855742A GB 1855742 A GB1855742 A GB 1855742A GB 581982 A GB581982 A GB 581982A
Authority
GB
United Kingdom
Prior art keywords
telephone
meter
frequency
noise
distances
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
GB1855742A
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.)
FREDERICK RICHMOND WENTWORTH S
AC Cossor Ltd
Original Assignee
FREDERICK RICHMOND WENTWORTH S
AC Cossor Ltd
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 FREDERICK RICHMOND WENTWORTH S, AC Cossor Ltd filed Critical FREDERICK RICHMOND WENTWORTH S
Priority to GB1855742A priority Critical patent/GB581982A/en
Publication of GB581982A publication Critical patent/GB581982A/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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/282—Transmitters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

581,982. Radar. COSSOR, Ltd., A. C., and STRAFFORD, F. R. W. Dec. 30, 1942, No. 18557. [Class 40 (v)] Apparatus for measuring distances by reflected waves comprises a super-regenerative receiver which transmits a signal every time the quench is removed, means for varying the quenching frequency, and means for indicating the presence or disappearance of noise in the detector circuit. The Figure shows such a receiver coupled direct to the aerial 15, with a telephone 19 in the anode circuit and a pulse generator 21 producing the quenching frequency which is indicated by the meter 23. In operation, the pulse generator is adjusted by hand until noise ceases in the telephone, the distance being then indicated by meter 23. The telephone may be replaced by a meter measuring the audio-frequency output or changes in the D.C. component of the anode current. To detect the arrival of a reflecting body at a predetermined range, the quenching frequency may be adjusted to that range and an alarm circuit arranged to operate in response to the disappearance of noise from the detector output, to a decrease in the audio-frequency output, or to an increase in the D.C. component of the anode current.
GB1855742A 1942-12-30 1942-12-30 Improvements relating to electrical apparatus for the measurement of distances by the reflection of electromagnetic waves Expired GB581982A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1855742A GB581982A (en) 1942-12-30 1942-12-30 Improvements relating to electrical apparatus for the measurement of distances by the reflection of electromagnetic waves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1855742A GB581982A (en) 1942-12-30 1942-12-30 Improvements relating to electrical apparatus for the measurement of distances by the reflection of electromagnetic waves

Publications (1)

Publication Number Publication Date
GB581982A true GB581982A (en) 1946-10-31

Family

ID=10114489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1855742A Expired GB581982A (en) 1942-12-30 1942-12-30 Improvements relating to electrical apparatus for the measurement of distances by the reflection of electromagnetic waves

Country Status (1)

Country Link
GB (1) GB581982A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2961652A (en) * 1948-12-16 1960-11-22 Robert W Bogle Radio altimeters
US2961653A (en) * 1948-12-16 1960-11-22 Robert W Bogle Radio ranging devices
US2975414A (en) * 1948-12-16 1961-03-14 Robert W Bogle Radio ranging device
US2980905A (en) * 1948-12-16 1961-04-18 Joseph W Gratian Radio ranging device
US2984833A (en) * 1948-12-16 1961-05-16 Robert T Nieset Super-regenerative radio ranging device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2961652A (en) * 1948-12-16 1960-11-22 Robert W Bogle Radio altimeters
US2961653A (en) * 1948-12-16 1960-11-22 Robert W Bogle Radio ranging devices
US2975414A (en) * 1948-12-16 1961-03-14 Robert W Bogle Radio ranging device
US2980905A (en) * 1948-12-16 1961-04-18 Joseph W Gratian Radio ranging device
US2984833A (en) * 1948-12-16 1961-05-16 Robert T Nieset Super-regenerative radio ranging device

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