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.)
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
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Engineering & Computer Science
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Computer Networks & Wireless Communication
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Physics & Mathematics
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General Physics & Mathematics
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Radar, Positioning & Navigation
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Remote Sensing
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Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves
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Verfahren zur akustischen fernmessung zur bestimmung der relativen lage eines getauchten gegenstandes, bezogen auf ein fahrzeug und vorrichtung zu seiner durchfuehrung
Vorrichtung zur Halterung von Geraten fur die Beobachtung von Bereichen m oder an Schleppnetzen, insbesondere von Echolot schwingern zur Beobachtung durch Echolotung