using transmission of interrupted, pulse-modulated waves

Full Title

Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems > using reflection of acoustic waves > Systems determining position data of a target > Systems for measuring distance only > using transmission of interrupted, pulse-modulated waves

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 15/12 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
• G01S 15/14 wherein a voltage or current pulse is initiated and terminated in accordance respectively with the pulse transmission and echo reception
• G01S 15/18 wherein range gates are used