FR714774A - Method and apparatus for sound tracking - Google Patents

Method and apparatus for sound tracking

Info

Publication number
FR714774A
FR714774A FR714774DA FR714774A FR 714774 A FR714774 A FR 714774A FR 714774D A FR714774D A FR 714774DA FR 714774 A FR714774 A FR 714774A
Authority
FR
France
Prior art keywords
sound tracking
tracking
sound
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
French (fr)
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.)
Submarine Signal Co
Original Assignee
Submarine Signal Co
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 Submarine Signal Co filed Critical Submarine Signal Co
Application granted granted Critical
Publication of FR714774A publication Critical patent/FR714774A/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
    • 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)
  • Stereophonic System (AREA)
FR714774D 1930-04-30 1931-04-03 Method and apparatus for sound tracking Expired FR714774A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2079620X 1930-04-30

Publications (1)

Publication Number Publication Date
FR714774A true FR714774A (en) 1931-11-19

Family

ID=7983917

Family Applications (1)

Application Number Title Priority Date Filing Date
FR714774D Expired FR714774A (en) 1930-04-30 1931-04-03 Method and apparatus for sound tracking

Country Status (2)

Country Link
US (1) US2079620A (en)
FR (1) FR714774A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893063A (en) * 1944-03-15 1975-07-01 Us Navy Detection streamer

Also Published As

Publication number Publication date
US2079620A (en) 1937-05-11

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