Systems for determining distance or velocity not using reflection or reradiation

Classification Context

Section:

PHYSICS

Class:

MEASURING; TESTING

Subclass:

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

Child Classifications

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• G01S 11/02 using radio waves
• G01S 11/12 using electromagnetic waves other than radio waves
• G01S 11/14 using ultrasonic, sonic or infrasonic waves
• G01S 11/16 using difference in transit time between electromagnetic and sonic waves