FR939391A - Perfectionnements aux radio-altimètres - Google Patents

Perfectionnements aux radio-altimètres

Info

Publication number
FR939391A
FR939391A FR939391DA FR939391A FR 939391 A FR939391 A FR 939391A FR 939391D A FR939391D A FR 939391DA FR 939391 A FR939391 A FR 939391A
Authority
FR
France
Prior art keywords
radio altimeters
altimeters
radio
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
Eric Osborne Willoughby
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 FR939391A publication Critical patent/FR939391A/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
    • 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)
  • 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)
FR939391D 1941-09-26 1946-10-24 Perfectionnements aux radio-altimètres Expired FR939391A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12500/41A GB552260A (en) 1941-09-26 1941-09-26 Improvements in or relating to radio altimeters

Publications (1)

Publication Number Publication Date
FR939391A true FR939391A (fr) 1948-11-12

Family

ID=10005733

Family Applications (1)

Application Number Title Priority Date Filing Date
FR939391D Expired FR939391A (fr) 1941-09-26 1946-10-24 Perfectionnements aux radio-altimètres

Country Status (4)

Country Link
US (1) US2395928A (fr)
BE (1) BE476639A (fr)
FR (1) FR939391A (fr)
GB (1) GB552260A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490808A (en) * 1942-11-28 1949-12-13 Standard Telephones Cables Ltd Radio detection system
US2603744A (en) * 1945-09-14 1952-07-15 Roland W Larson Tuning mechanism
US2724055A (en) * 1945-09-17 1955-11-15 Bliss William Roderic Coupling system for high frequencies
US2448554A (en) * 1946-02-27 1948-09-07 Nicholas T Simopoulos Ultra high frequency tuning unit
US2570295A (en) * 1948-04-27 1951-10-09 Jr Harry Vantine Parachute safety opener
US2712061A (en) * 1948-11-03 1955-06-28 Westinghouse Electric Corp Means for high speed keying at low radio frequency
US2755461A (en) * 1951-06-07 1956-07-17 Steven N Pantages Cymatophone

Also Published As

Publication number Publication date
US2395928A (en) 1946-03-05
BE476639A (fr)
GB552260A (en) 1943-03-30

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