FR846671A - Perfectionnements aux indicateurs de fronts d'ondes - Google Patents

Perfectionnements aux indicateurs de fronts d'ondes

Info

Publication number
FR846671A
FR846671A FR846671DA FR846671A FR 846671 A FR846671 A FR 846671A FR 846671D A FR846671D A FR 846671DA FR 846671 A FR846671 A FR 846671A
Authority
FR
France
Prior art keywords
wavefront
indicators
wavefront indicators
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
Donald Orr Sproule
Arthur Joseph Hughes
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.)
Hughes Henry and Son Ltd
Original Assignee
Hughes Henry and Son 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 Hughes Henry and Son Ltd filed Critical Hughes Henry and Son Ltd
Application granted granted Critical
Publication of FR846671A publication Critical patent/FR846671A/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
    • 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
    • G01S1/72—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 ultrasonic, sonic or infrasonic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
FR846671D 1937-11-26 1938-11-26 Perfectionnements aux indicateurs de fronts d'ondes Expired FR846671A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2304965X 1937-11-26

Publications (1)

Publication Number Publication Date
FR846671A true FR846671A (fr) 1939-09-21

Family

ID=10903465

Family Applications (1)

Application Number Title Priority Date Filing Date
FR846671D Expired FR846671A (fr) 1937-11-26 1938-11-26 Perfectionnements aux indicateurs de fronts d'ondes

Country Status (2)

Country Link
US (1) US2304965A (fr)
FR (1) FR846671A (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499605A (en) * 1943-02-25 1950-03-07 Nicolson Alexander Mclean Method and apparatus for detecting waves
US2427569A (en) * 1943-04-20 1947-09-16 Nicolson Alexander Mclean Wave sensitive and wave front detecting apparatus
US2418846A (en) * 1943-12-03 1947-04-15 Bell Telephone Labor Inc Submarine detection system
US2434644A (en) * 1945-07-30 1948-01-20 Robert W Fairweather Sound wave direction determinator
US2965879A (en) * 1946-02-05 1960-12-20 Lippel Bernard Sound locating means
US2470114A (en) * 1946-07-12 1949-05-17 Robert M Sherwood Optical sound bearing system
US3307141A (en) * 1948-03-25 1967-02-28 Harold L Saxton Wedge scan for echo locating system
US2550238A (en) * 1948-11-09 1951-04-24 Geophysical Service Inc Device for comparing traces on seismic records
DE977176C (de) * 1953-11-12 1965-05-20 Siemens Ag Empfangsvorrichtung zur Ermittlung der Bewegungsrichtung eines Strahlers beim Durchgang durch eine Ebene im Raum
US3141610A (en) * 1961-03-22 1964-07-21 William C Jones Pulmonary function analyzing device

Also Published As

Publication number Publication date
US2304965A (en) 1942-12-15

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