BE347842A - - Google Patents

Info

Publication number
BE347842A
BE347842A BE347842DA BE347842A BE 347842 A BE347842 A BE 347842A BE 347842D A BE347842D A BE 347842DA BE 347842 A BE347842 A BE 347842A
Authority
BE
Belgium
Application number
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.)
Publication of BE347842A publication Critical patent/BE347842A/xx

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 Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
BE347842D 1927-05-06 BE347842A (ja�@�@)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1757874X 1927-05-06

Publications (1)

Publication Number Publication Date
BE347842A true BE347842A (ja�@�@)

Family

ID=7742043

Family Applications (1)

Application Number Title Priority Date Filing Date
BE347842D BE347842A (ja�@�@) 1927-05-06

Country Status (2)

Country Link
US (1) US1757874A (ja�@�@)
BE (1) BE347842A (ja�@�@)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534847A (en) * 1940-03-13 1950-12-19 Auscher Jean Directional sound detector
US8036821B2 (en) * 2007-12-18 2011-10-11 Honeywell International Inc. Methods and systems for diminishing the effects of an acoustic signature of vehicles

Also Published As

Publication number Publication date
US1757874A (en) 1930-05-06

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