GB574319A - Improvements in or relating to apparatus for determining distance by the reflection of electromagnetic waves - Google Patents

Improvements in or relating to apparatus for determining distance by the reflection of electromagnetic waves

Info

Publication number
GB574319A
GB574319A GB617240A GB617240A GB574319A GB 574319 A GB574319 A GB 574319A GB 617240 A GB617240 A GB 617240A GB 617240 A GB617240 A GB 617240A GB 574319 A GB574319 A GB 574319A
Authority
GB
United Kingdom
Prior art keywords
phase difference
rectifiers
measured
reflection
microammeter
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
GB617240A
Other languages
English (en)
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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
Priority to FR957622D priority Critical patent/FR957622A/fr
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB617240A priority patent/GB574319A/en
Publication of GB574319A publication Critical patent/GB574319A/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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S13/36—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S13/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
GB617240A 1940-04-05 1940-04-05 Improvements in or relating to apparatus for determining distance by the reflection of electromagnetic waves Expired GB574319A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR957622D FR957622A (enrdf_load_stackoverflow) 1940-04-05
GB617240A GB574319A (en) 1940-04-05 1940-04-05 Improvements in or relating to apparatus for determining distance by the reflection of electromagnetic waves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB617240A GB574319A (en) 1940-04-05 1940-04-05 Improvements in or relating to apparatus for determining distance by the reflection of electromagnetic waves

Publications (1)

Publication Number Publication Date
GB574319A true GB574319A (en) 1946-01-01

Family

ID=9809724

Family Applications (1)

Application Number Title Priority Date Filing Date
GB617240A Expired GB574319A (en) 1940-04-05 1940-04-05 Improvements in or relating to apparatus for determining distance by the reflection of electromagnetic waves

Country Status (2)

Country Link
FR (1) FR957622A (enrdf_load_stackoverflow)
GB (1) GB574319A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR957622A (enrdf_load_stackoverflow) 1950-02-23

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