FR500068A - Improvements in devices for receiving waves and determining their direction - Google Patents

Improvements in devices for receiving waves and determining their direction

Info

Publication number
FR500068A
FR500068A FR500068A FR500068DA FR500068A FR 500068 A FR500068 A FR 500068A FR 500068 A FR500068 A FR 500068A FR 500068D A FR500068D A FR 500068DA FR 500068 A FR500068 A FR 500068A
Authority
FR
France
Prior art keywords
determining
devices
receiving waves
waves
receiving
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
FR500068A
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 FR500068A publication Critical patent/FR500068A/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)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
FR500068A 1917-08-16 1918-10-28 Improvements in devices for receiving waves and determining their direction Expired FR500068A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US136627A US1355598A (en) 1917-08-16 1917-08-16 Apparatus for directive signaling
DEF0050907 1920-07-03

Publications (1)

Publication Number Publication Date
FR500068A true FR500068A (en) 1920-03-02

Family

ID=25977541

Family Applications (1)

Application Number Title Priority Date Filing Date
FR500068A Expired FR500068A (en) 1917-08-16 1918-10-28 Improvements in devices for receiving waves and determining their direction

Country Status (2)

Country Link
US (1) US1355598A (en)
FR (1) FR500068A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503400A (en) * 1943-10-06 1950-04-11 Bell Telephone Labor Inc Testing tank arranged for suppression of reflected compressional waves
US2684724A (en) * 1948-10-01 1954-07-27 Bell Telephone Labor Inc Sound wave refractor
US3388374A (en) * 1967-01-25 1968-06-11 Navy Usa Sonic beam former

Also Published As

Publication number Publication date
US1355598A (en) 1920-10-12

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