using transmission of interrupted, pulse modulated waves

Introduced: January 1980

Last revised: January 2006

Full Title

Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified > Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems > 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

8 direct subcodes

Child Classifications

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G01S 13/12 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 13/14 wherein a voltage or current pulse is initiated and terminated in accordance respectively with the pulse transmission and echo reception
G01S 13/18 wherein range gates are used
G01S 13/2 whereby multiple time-around echos are used or eliminated
G01S 13/22 using irregular pulse repetition frequency
G01S 13/24 using frequency agility of carrier wave
G01S 13/26 wherein the transmitted pulses use a frequency- or phase-modulated carrier wave
G01S 13/3 using more than one pulse per radar period