NL228194A - - Google Patents

Info

Publication number
NL228194A
NL228194A NL228194DA NL228194A NL 228194 A NL228194 A NL 228194A NL 228194D A NL228194D A NL 228194DA NL 228194 A NL228194 A NL 228194A
Authority
NL
Netherlands
Application number
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.)
Publication of NL228194A publication Critical patent/NL228194A/xx
Priority claimed from DEA27180A external-priority patent/DE977807C/de

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
    • G01S1/02—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 radio waves
    • 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)
NL228194D 1957-05-20 NL228194A (cs)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA27180A DE977807C (de) 1962-11-10 1957-05-20 Verfahren und Einrichtung zur horizontalen Echolotung

Publications (1)

Publication Number Publication Date
NL228194A true NL228194A (cs)

Family

ID=6926342

Family Applications (2)

Application Number Title Priority Date Filing Date
NL113396D NL113396C (cs) 1957-05-20
NL228194D NL228194A (cs) 1957-05-20

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL113396D NL113396C (cs) 1957-05-20

Country Status (2)

Country Link
FR (1) FR1602853A (cs)
NL (2) NL228194A (cs)

Also Published As

Publication number Publication date
NL113396C (cs)
FR1602853A (cs) 1971-02-08

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