FR939201A - Perfectionnements aux systèmes électriques compteurs de fréquences - Google Patents

Perfectionnements aux systèmes électriques compteurs de fréquences

Info

Publication number
FR939201A
FR939201A FR939201DA FR939201A FR 939201 A FR939201 A FR 939201A FR 939201D A FR939201D A FR 939201DA FR 939201 A FR939201 A FR 939201A
Authority
FR
France
Prior art keywords
frequency counter
electrical frequency
counter systems
systems
electrical
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
Other languages
English (en)
Inventor
Alfred Mortlock
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR939201A publication Critical patent/FR939201A/fr
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
    • 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
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
    • G01S13/585—Velocity or trajectory determination systems; Sense-of-movement determination systems processing the video signal in order to evaluate or display the velocity value

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Rectifiers (AREA)
FR939201D 1944-11-28 1946-07-06 Perfectionnements aux systèmes électriques compteurs de fréquences Expired FR939201A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2373244A GB583752A (en) 1944-11-28 1944-11-28 Improvements in or relating to electric frequency counting arrangements

Publications (1)

Publication Number Publication Date
FR939201A true FR939201A (fr) 1948-11-08

Family

ID=10200387

Family Applications (1)

Application Number Title Priority Date Filing Date
FR939201D Expired FR939201A (fr) 1944-11-28 1946-07-06 Perfectionnements aux systèmes électriques compteurs de fréquences

Country Status (4)

Country Link
BE (1) BE471307A (fr)
ES (1) ES172515A1 (fr)
FR (1) FR939201A (fr)
GB (1) GB583752A (fr)

Also Published As

Publication number Publication date
ES172515A1 (es) 1946-03-16
GB583752A (en) 1946-12-30
BE471307A (fr)

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