GB661177A - Improvements in or relating to radio apparatus for indicating distance - Google Patents

Improvements in or relating to radio apparatus for indicating distance

Info

Publication number
GB661177A
GB661177A GB35191/47A GB3519147A GB661177A GB 661177 A GB661177 A GB 661177A GB 35191/47 A GB35191/47 A GB 35191/47A GB 3519147 A GB3519147 A GB 3519147A GB 661177 A GB661177 A GB 661177A
Authority
GB
United Kingdom
Prior art keywords
frequency
amplifier
cathode
signal
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
Application number
GB35191/47A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Philips Electronics NV
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 Philips Gloeilampenfabrieken NV, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB661177A publication Critical patent/GB661177A/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
    • G01S13/34—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)
GB35191/47A 1939-06-23 1947-12-31 Improvements in or relating to radio apparatus for indicating distance Expired GB661177A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL661177X 1939-06-23

Publications (1)

Publication Number Publication Date
GB661177A true GB661177A (en) 1951-11-21

Family

ID=19797458

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35191/47A Expired GB661177A (en) 1939-06-23 1947-12-31 Improvements in or relating to radio apparatus for indicating distance

Country Status (3)

Country Link
BE (1) BE440372A (enrdf_load_stackoverflow)
FR (1) FR870146A (enrdf_load_stackoverflow)
GB (1) GB661177A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR870146A (fr) 1942-03-04
BE440372A (enrdf_load_stackoverflow) 1941-02-28

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