FR774600A - Improvements to devices used to determine depth or distance - Google Patents

Improvements to devices used to determine depth or distance

Info

Publication number
FR774600A
FR774600A FR774600DA FR774600A FR 774600 A FR774600 A FR 774600A FR 774600D A FR774600D A FR 774600DA FR 774600 A FR774600 A FR 774600A
Authority
FR
France
Prior art keywords
distance
devices used
determine depth
depth
devices
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 FR774600A publication Critical patent/FR774600A/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)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
FR774600D 1933-06-17 1934-06-16 Improvements to devices used to determine depth or distance Expired FR774600A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1733233A GB421338A (en) 1933-06-17 1933-06-17 Improvements in or relating to apparatus for acoustically determining depths and other distances

Publications (1)

Publication Number Publication Date
FR774600A true FR774600A (en) 1934-12-08

Family

ID=10093314

Family Applications (1)

Application Number Title Priority Date Filing Date
FR774600D Expired FR774600A (en) 1933-06-17 1934-06-16 Improvements to devices used to determine depth or distance

Country Status (2)

Country Link
FR (1) FR774600A (en)
GB (1) GB421338A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE893170C (en) * 1936-02-06 1953-10-12 Atlas Werke Ag Display and writing device for distance measurement using the echo method
DE971504C (en) * 1952-03-18 1959-02-05 Electroacustic Ges M B H Echosounder with display through a Braun tube and recording device

Also Published As

Publication number Publication date
GB421338A (en) 1934-12-17

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