IPC Main Group
G01S 11/00 Systems for determining distance or velocity not using reflection or reradiation
Introduced: September 1968
Last revised: January 2006
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
4 direct subcodes
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