NL40221C - - Google Patents

Info

Publication number
NL40221C
NL40221C NL68819A NL68819A NL40221C NL 40221 C NL40221 C NL 40221C NL 68819 A NL68819 A NL 68819A NL 68819 A NL68819 A NL 68819A NL 40221 C NL40221 C NL 40221C
Authority
NL
Netherlands
Application number
NL68819A
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 filed Critical
Priority to NL68819A priority Critical patent/NL40221C/xx
Priority to GB744835A priority patent/GB453164A/en
Priority to FR787383D priority patent/FR787383A/fr
Priority to DEA75630D priority patent/DE725379C/de
Priority to FR46973D priority patent/FR46973E/fr
Application granted granted Critical
Publication of NL40221C publication Critical patent/NL40221C/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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
    • G01S13/12—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
    • 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

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Measuring Volume Flow (AREA)
NL68819A 1934-03-21 1934-03-21 NL40221C (xx)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL68819A NL40221C (xx) 1934-03-21 1934-03-21
GB744835A GB453164A (en) 1934-03-21 1935-03-09 Improvements in or relating to methods of echo sounding
FR787383D FR787383A (fr) 1934-03-21 1935-03-14 Nouveau procédé de sondage par écho
DEA75630D DE725379C (de) 1934-03-21 1935-03-22 Verfahren zur Entfernungsmessung nach der Echomethode
FR46973D FR46973E (fr) 1934-03-21 1936-01-18 Nouveau procédé de sondage par écho

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL68819A NL40221C (xx) 1934-03-21 1934-03-21

Publications (1)

Publication Number Publication Date
NL40221C true NL40221C (xx) 1937-03-15

Family

ID=19786326

Family Applications (1)

Application Number Title Priority Date Filing Date
NL68819A NL40221C (xx) 1934-03-21 1934-03-21

Country Status (4)

Country Link
DE (1) DE725379C (xx)
FR (2) FR787383A (xx)
GB (1) GB453164A (xx)
NL (1) NL40221C (xx)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB657314A (en) * 1947-07-02 1951-09-19 Bendix Aviat Corp Echo ranging apparatus
DE886529C (de) * 1950-03-21 1953-08-13 Hoerder Huettenunion Ag Feststellen des leeren Raumes zwischen Beschickungssaeule und der Gicht bei Schachtoefen, insbesondere Hochoefen
DE962589C (de) * 1953-12-08 1957-04-25 Electroacustic Ges M B H Nach dem Impulsrueckstrahlverfahren arbeitende Echoloteinrichtung
US2890437A (en) * 1955-07-18 1959-06-09 Honeywell Regulator Co Sonar apparatus

Also Published As

Publication number Publication date
FR787383A (fr) 1935-09-21
DE725379C (de) 1942-09-21
GB453164A (en) 1936-09-07
FR46973E (fr) 1936-11-23

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