GB230849A - - Google Patents

Info

Publication number
GB230849A
GB230849A GB690225A GB690225A GB230849A GB 230849 A GB230849 A GB 230849A GB 690225 A GB690225 A GB 690225A GB 690225 A GB690225 A GB 690225A GB 230849 A GB230849 A GB 230849A
Authority
GB
United Kingdom
Prior art keywords
receiver
brush
alternator
transmitter
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
GB690225A
Other languages
English (en)
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.)
Signal GmbH
Original Assignee
Signal GmbH
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 Signal GmbH filed Critical Signal GmbH
Publication of GB230849A publication Critical patent/GB230849A/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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/08—Systems for measuring distance only
    • G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves
    • G01S15/12—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves wherein the pulse-recurrence frequency is varied to provide a desired time relationship between the transmission of a pulse and the receipt of the echo of a preceding pulse

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
GB690225A 1924-03-15 1925-03-13 Expired GB230849A (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES65438D DE413224C (de) 1924-03-15 1924-03-15 Verfahren zur akustischen Messung von Wegstrecken und Zeiten

Publications (1)

Publication Number Publication Date
GB230849A true GB230849A (enExample) 1925-05-21

Family

ID=7498042

Family Applications (1)

Application Number Title Priority Date Filing Date
GB690225A Expired GB230849A (enExample) 1924-03-15 1925-03-13

Country Status (2)

Country Link
DE (1) DE413224C (enExample)
GB (1) GB230849A (enExample)

Also Published As

Publication number Publication date
DE413224C (de) 1925-05-04

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